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EXHIBIT 10.13    
    

 
  [Letterhead of Rockwood Specialties Inc.]    
    

March 21,
2001 

Mr. Robert
J. Zatta

73 Brookstone Drive

Princeton, NJ 08540 

Dear
Bob: 

        We
are pleased to confirm our offer of employment as Vice President and Chief Financial Officer on a full-time and exclusive basis. For purposes of facilitating your
employment, you will be assigned to Rockwood Specialties Inc. (hereafter "Rockwood"). It is our understanding that you will commence employment on or before May 1, 2001. You will have
direct reporting responsibility to the President. Although we reserve the right, at our discretion, to change your responsibilities or job title at any time, we will not reduce your level of
responsibilities below that are customarily performed by a Company Vice President. 

        The
following summarizes the key terms we have agreed to with respect to your employment: 

	1.
	You
will be based at Princeton, New Jersey.

	2.
	Your
annual salary of $340,000 will be payable bi-monthly in equal installments or at the end of such payroll accounting periods as are periodically established by
Rockwood. Your salary will be subject to review for potential increase on an annual basis commencing January of 2002 in accordance with Rockwood's practice in the U.S.

	3.
	As
additional consideration for your agreement to our terms and conditions of employment, you will receive a one-time "sign-on" bonus of $220,000 payable thirty
(30) days after commencement of employment. You will also be eligible to participate in the Rockwood Corporate Executive Annual Performance Bonus Plan. Your Target Bonus will be 65% of your
base salary. The terms of the 2001 Bonus, including performance objectives, will be defined within thirty (30) days of your commencing employment with the understanding that 20% of your overall
Bonus will be based on personal performance objectives to be agreed with the Company President. If any Bonus is payable for 2001, it will be on a pro rata basis commensurate with the amount of time
that you were employed by us during 2001. Notwithstanding the foregoing, your Bonus under the Annual Performance Plan for 2001 will be no less than $50,000, payable in the first quarter of 2002.

	4.
	You
will be afforded the opportunity to purchase up to a maximum of $500,000 of the Company's Common Stock in accordance with the terms and conditions of the Management Shareholders
Agreement, dated February 2, 2001. This opportunity to acquire Company Common Stock will be available for a period of 90 days from commencement of employment. During the first
30 days of employment, you may acquire Common Stock at $5.00 per share; thereafter, the price will be the fair market value as determined by the Company's Board of Directors, but in no event
less than $5.00 per share. If you invest personal funds of at least $100,000 in Company Stock, the Company will assist you in acquiring additional shares of Common Stock by providing a loan equal to
fifty cents ($0.50) on each additional dollar above $100,000 you invest in Common Stock up to a total maximum investment of $500,000. For example, if you acquire $300,000 in Common Stock using your
personal funds, the Company will loan you up to $100,000 to acquire additional shares. The term of the Loan will be a period of five (5) years (except in the case of termination or Change of
Control) with annual interest at a rate equal to the applicable Federal rate. Based on the amount of Common Stock you purchase under the Management Shareholders Agreement, the Company will grant you
options to acquire additional Common Stock in accordance with the terms and conditions of the Company's Stock Option Agreement, dated February 2, 2001. 

 

	5.
	During
your employment, you will be provided an automobile commensurate with your position as a Company vice president. In addition, the business expenses associated with operating the
automobile including gas, taxes, insurance, and maintenance will be reimbursable on a monthly basis.

	6.
	You
will be entitled to participate in Rockwood's U.S. Welfare/Benefit and Retirement Plus Program in accordance with the terms of those Programs (as those Programs may from time to
time be changed and/or terminated by Rockwood at its sole discretion). These Benefit Programs presently include the following:

	•
	Rockwood
Health Care Benefits (medical, dental and vision)

	•
	Rockwood
Long-Term Disability Plan

	•
	Rockwood
Life and Accident Plan

	•
	Rockwood
Health Care and Dependent Care Reimbursement Account

	•
	Rockwood
Retirement Plus Program (Profit Share/401(k) and Money Purchase Plan)

	•
	Supplemental
Executive Savings Plan

	7.
	During
2001, you will be entitled to four (4) weeks vacation prorated based on actual days employed in 2001. Thereafter, you will be entitled to four (4) weeks vacation
on an annual basis, which must be used in the year granted and not carried over from year to year.

	8.
	You
agree to comply with Attachment "A" to this Employment Agreement governing the terms and conditions applicable to Executives of
Rockwood, its subsidiaries and affiliates. Attachment "A" is incorporated here into and made a part of this Employment Agreement.

	9.
	This
Employment Agreement may be terminated at any time, for any reason, by Rockwood provided that except for termination for cause, Rockwood continues to pay you an amount equal to
your base salary in effect at the termination date for a period of 12 months following the date Rockwood ceases to utilize your services. You agree to provide Rockwood with six
(6) months prior written notice of any termination of Employment by you. This offer is contingent upon you providing physician certification that you are in good health and pass standard drug
screening.

	10.
	This
Employment Agreement (including Attachment "A") sets forth the entire agreement between us and supersedes and replaces any existing agreements, (including any oral arrangements)
entered into between us. It may only be modified by an Agreement in writing, signed by you and an authorized representative of the Rockwood. 

        Please
confirm your acceptance of the terms of our Agreement by signing below and return one signed copy of this letter to me. Again, I am pleased that you have accepted employment with
us, and we look forward to a mutually beneficial employment relationship. 

Very
truly yours, 

/s/    Michael
J. Kenny 

Michael
J. Kenny

President 

Agreed
and accepted this 27 day of March, 2001 

	 	 	/s/  ROBERT J. ZATTA      
 Robert J. Zatta	 	 
	cc:	 	Todd A. Fisher

Thomas J. Riordan	 	 

2

 
 

ATTACHMENT A
  
    EXECUTIVE EMPLOYMENT TERMS    
    

        The following standard terms and conditions shall apply to the Employment Agreement between Robert J. Zatta ("Executive") and Rockwood Specialties, Inc.
("Employer"). 

        For
purposes of this Attachment A to the Employment Agreement, the following terms apply: 

	•
	Employer
collectively means Rockwood Specialties, Inc. ("Employer") and any of its existing or future subsidiaries or affiliates to whom the agreement may be assigned
by Rockwood Specialties, Inc. ("Employer").

	•
	Confidential
Information means information not generally known about Employer's processes, formulas, devices, and products, including, but not limited to, information
relating to research, development, manufacture, purchasing, accounting, engineering, marketing, customers, merchandising, selling, trade relations and technical services.

	•
	Inventions
means discoveries, improvements and ideas (whether patentable or not) relating to any activities of Employer.

	•
	Works
of Authorship means any original work of authorship within the purview of the copyright laws of the United States and it is intended that all Works of Authorship
created in the course of one's employment with Employer will be works made for hire within the meaning of such copyright laws.

	1.
	Employer
shall have the right to assign and/or change Executive's duties, responsibilities and job title, and to reassign Executive to another person or entity. In such case, this
Employment Agreement shall remain in full force and effect after the assignment, and Executive will be required to fulfill Executive's obligations under this Employment Agreement to the assignee.
Executive's obligations under this Employment Agreement are personal and may not be assigned.

	2.
	Subject
to the notice requirements as agreed to in writing with Executive, this Employment Agreement may be terminated at will by either party at any time and for any reason. The party
wanting to terminate the Employment Agreement must provide the other party with advance notice in writing as set forth in the Employment Agreement. During the notice period, Executive may be required
to perform any duties and responsibilities as assigned by Employer. 

If
the Employer elects to terminate Executive's employment during the notice period, it shall continue to pay Executive the salary and benefits Executive would have received had Executive remained
employed for the remaining balance of the notice period. However, Executive will not be entitled to receive the salary and benefits continuation set forth in the Employment Agreement if Executive is
terminated for cause, such as a criminal felony, theft, fraud, etc. 

If
Executive terminates the Employment Agreement, but fails to provide the required advance written notice, Executive will not be entitled to any additional salary, benefits or payments from Employer
and Employer will be entitled to pursue appropriate damages and remedies. 

	3.
	Based
on Executive's special status with the Employer, Executive acknowledges that an agreement by Executive not to compete in certain competitive activities is necessary, reasonable,
and important. Furthermore, Executive expressly agrees that the requirements of this paragraph be enforced strictly should there be a violation of this Employment Agreement. In recognition of these
considerations, and in exchange for employment with the Employer and the substantial benefits associated with employment, Executive agrees that the Employer, at its sole option, may require that
Executive will not perform services for, become employed by, or become associated with (such as through an ownership interest) any entity which engages in a business which competes with the Employer's
business for a period of twelve (12) months after Executive's separation from employment; provided that during such non-compete period, the Employer continues to pay Executive his
current salary. 

 
	4.
	Immediately
upon Executive's last day of employment, Executive shall return to the Employer all documents (including all copies), material, and property belonging to the Employer,
including, but not limited to, Employer manuals, policies, financial records, legal documents, customer lists, prospective customer lists, training materials, and marketing materials. In addition to
other remedies available to the Employer, Executive authorizes the Employer to withhold payment of any salary payments owed to Executive until such documents, material, and property (including all
copies) are returned to the Employer.

	5.
	EXECUTIVE
IS TO BE EMPLOYED BY EMPLOYER IN A CAPACITY IN WHICH EXECUTIVE MAY RECEIVE OR CONTRIBUTE TO CONFIDENTIAL INFORMATION. EXECUTIVE, THEREFORE, AGREES IN RETURN FOR EMPLOYMENT OR
CONTINUED EMPLOYMENT BY EMPLOYER:

	(A)
	With
respect to Inventions and any Works of Authorship made or conceived by me, either solely or jointly with others, during (1) my past, present or future employment by
Employer, or (2) within one year after termination of my employment if based on Confidential Information:

	(i)
	To
promptly and fully inform Employer in writing of such Inventions or Works of Authorship;

	(ii)
	To
assign and I do hereby irrevocably assign) to Employer all of my rights to such Works of Authorship or Inventions, and to Applications for Letters Patent and to Letters Patent
granted upon such inventions.

	(iii)
	To
acknowledge and deliver promptly to Employer (without charge to Employer but at the expense of Employer) such written instruments and to do such other acts as may be necessary in
the opinion of Employer to obtain copyrights and maintain Letters Patent and to vest the entire right and title thereto in Employer.

	(B)
	Except
as required in my duties to Employer, I will never use or disclose any Confidential Information. To the extent that my duties
required me to disclose Confidential Information, I shall do so only after advising Employer in advance of such disclosure and only in strict conformity with Employer's policy, always taking all steps
necessary to maintain the confidential nature of the information.

	(C)
	I
will not assert any rights under any Inventions or Works of Authorship that relate to any past, present or possible future business of Employer as having been made or acquired by me
prior to my being employed by Employer, unless it can be demonstrated that the Inventions or Works of Authorship occurred prior to employment with Employer.

	(D)
	I
agree that all my obligations under Paragraphs (A) through (C) of this Section 5 (Attachment A) shall be
binding upon my heirs, assigns, and legal representatives.

	(E)
	I
agree that for a period of two (2) years following the termination of my employment, I will not solicit for employment any person employed by Employer or any subsidiary or
affiliate of Employer.

	6.
	The
Employment Agreement shall terminate immediately upon Executive's death, and all of the Employer's obligations under this Employment Agreement shall cease at that time.

	7.
	The
Employment Agreement (including Attachment A) may only be modified by a writing signed by Executive and an authorized
representative of the Employer.

	8.
	The
Employment Agreement (including Attachment A) and all matters related thereto will be governed by the laws of the State of
your location of employment. 

2

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EXHIBIT 10.13

[Letterhead of Rockwood Specialties Inc.]

ATTACHMENT A EXECUTIVE EMPLOYMENT TERMSQuickLinks
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EXHIBIT 10.14    
    

 
  LAPORTE INC. FORM EMPLOYMENT AGREEMENT    
    

October 13,
1994 

Mr. Thomas
J. Riordan

5500 Providence Country Club Drive

Charlotte, NC 28277 

Dear
Tom: 

        We
are pleased to confirm your employment as Vice President, General Counsel & Secretary of Laporte Inc. ("Employer") on a full time and exclusive basis. You will have
direct reporting responsibility to Bryan A. Hall, although we reserve the right to change your responsibilities or job title. 

	1.
	You
will be based in Charlotte, NC and your monthly salary will be $13,333.

	2.
	This
Employment Agreement may be terminated at any time upon twelve (12) months prior written notice by Employer or three (3) months prior written notice by you.

	3.
	You
will be eligible to participate in Laporte Inc.'s welfare benefit and retirement programs in accordance with the terms of those programs (as those programs may from time to
time be changed and/or terminated by Laporte Inc.). You also will be entitled to the following benefits: 

Company
Automobile Discretionary Management Bonus 

	4.
	You
agree to comply with Attachment A to this Employment Agreement governing terms and conditions applicable to Executives of
Laporte Inc. ("Employer"), its subsidiaries and affiliates. Attachment A is incorporated into and made part of this Employment Agreement.

	5.
	This
Employment Agreement (including Attachment A) sets forth the entire agreement between us and supersedes and replaces any
existing agreements entered into by us. It may only be modified by an agreement in writing signed by you and an authorized representative of the Employer. 

        To
confirm the terms of our agreement, please sign below and return the signed Employment Agreement to me. Again, let me say how pleased we are that you have accepted employment with
Laporte Inc. ("Employer"). We hope for a mutually beneficial relationship. 

	Very truly yours,	 	 	AGREED AND ACCEPTED
	

/S/  BRYAN A. HALL      	
 	

 	

/s/  THOMAS J. RIORDAN      

	Signatory	 	 	Name of Executive

 
 

ATTACHMENT A
  
    EXECUTIVE EMPLOYMENT TERMS    
    

        The following standard terms and conditions shall apply to the Employment Agreement between Thomas J. Riordan ("Executive") and Laporte Inc. ("Employer"). 

        For
purposes of this Attachment A to the Employment Agreement, the following terms apply: 

	•
	Employer
collectively means Laporte Inc. ("Employer") and any of its existing or future subsidiaries or affiliates (including Laporte Inc.) to whom the
agreement may be assigned by Laporte Inc. ("Employer").

	•
	Confidential
Information means information not generally known about Employer's processes, formulas, devices, and products, including, but not limited to, information
relating to research, development, manufacture, purchasing, accounting, engineering, marketing, customers, merchandising, selling, trade relations and technical services.

	•
	Inventions
means discoveries, improvements and ideas (whether patentable or not) relating to any activities of Employer.

	•
	Works
of Authorship means any original work of authorship within the purview of the copyright laws of the United States and it is intended that all Works of Authorship
created in the course of one's employment with Employer will be works made for hire within the meaning of such copyright laws.

	1.
	Employer
shall have the right to assign and/or change Executive's duties, responsibilities and job title, and to reassign Executive to another person or entity. In such case, this
Employment Agreement shall remain in full force and effect after the assignment, and Executive will be required to fulfill Executive's obligations under this Employment Agreement to the assignee.
Executive's obligations under this Employment Agreement are personal and may not be assigned.

	2.
	Subject
to the notice requirements as agreed to in writing with Executive, this Employment Agreement may be terminated at will by either party at any time and for any reason. The party
wanting to terminate the Employment Agreement must provide the other party with advance notice in writing as set forth in the Employment Agreement. During the notice period, Executive may be required
to perform any duties and responsibilities as assigned by Employer. 

If
the Employer elects to terminate Executive's employment during the notice period, it shall continue to pay Executive the salary and benefits Executive would have received had Executive remained
employed for the remaining balance of the notice period. However, Executive will not be entitled to receive the salary and benefits continuation set forth in the Employment Agreement if Executive is
terminated for cause, such as a criminal felony, theft, fraud, etc. 

If
Executive terminates the Employment Agreement, but fails to provide the required advance written notice, Executive will not be entitled to any additional salary, benefits or payments from Employer
and Employer will be entitled to pursue appropriate damages and remedies. 

	3.
	Based
on Executive's special status with the Employer, Executive acknowledges that an agreement by Executive not to compete in certain competitive activities is necessary, reasonable,
and important. Furthermore, Executive expressly agrees that the requirements of this paragraph be enforced strictly should there be a violation of this Employment Agreement. In recognition of these
considerations, and in exchange for employment with the Employer and the substantial benefits associated with employment, Executive agrees that the Employer, at its sole option, may require that
Executive will not perform services for, become employed by, or become associated with (such as through an ownership interest) any entity which engages in a business which competes with the Employer's
business for a period of twelve (12) months after Executive's separation from employment; provided that during such non-compete period, the Employer continues to pay Executive his
current salary and benefits. 

 
	4.
	Immediately
upon Executive's last day of employment, Executive shall return to the Employer all documents (including all copies), material, and property belonging to the Employer,
including, but not limited to, Employer manuals, policies, financial records, legal documents, customer lists, prospective customer lists, training materials, and marketing materials. In addition to
other remedies available to the Employer, Executive authorizes the Employer to withhold payment of any salary payments owed to Executive until such documents, material, and property (including all
copies) are returned to the Employer.

	5.
	EXECUTIVE
IS TO BE EMPLOYED BY EMPLOYER IN A CAPACITY IN WHICH EXECUTIVE MAY RECEIVE OR CONTRIBUTE TO CONFIDENTIAL INFORMATION. EXECUTIVE, THEREFORE, AGREES IN RETURN FOR EMPLOYMENT OR
CONTINUED EMPLOYMENT BY EMPLOYER:

	(A)
	With
respect to Inventions and any Works of Authorship made or conceived by me, either solely or jointly with others, during (1) my past, present or future employment by
Employer, or (2) within one year after termination of my employment if based on Confidential Information:

	(i)
	To
promptly and fully inform Employer in writing of such Inventions or Works of Authorship;

	(ii)
	To
assign (and I do hereby irrevocably assign) to Employer all of my rights to such Works of Authorship or Inventions, and to Applications for Letters Patent and to Letters Patent
granted upon such inventions.

	(iii)
	To
acknowledge and deliver promptly to Employer (without charge to Employer but at the expense of Employer) such written instruments and to do such other acts as may be necessary in
the opinion of Employer to obtain copyrights and maintain Letters Patent and to vest the entire right and title thereto in Employer.

	(B)
	Except
as required in my duties to Employer, I will never use or disclose any Confidential Information. To the extent that my duties
required me to disclose Confidential Information, I shall do so only after advising Employer in advance of such disclosure and only in strict conformity with Employer's policy, always taking all steps
necessary to maintain the confidential nature of the information.

	(C)
	I
will not assert any rights under any Inventions or Works of Authorship that relate to any past, present or possible future business of Employer as having been made or acquired by me
prior to my being employed by Employer, unless it can be demonstrated that the Inventions or Works of Authorship occurred prior to employment with Employer.

	(D)
	I
agree that all my obligations under Paragraphs (A) through (C) of this Section 5 (Attachment A) shall be
binding upon my heirs, assigns, and legal representatives.

	(E)
	I
agree that for a period of two (2) years following the termination of my employment I will not solicit for employment any person employed by Employer or any subsidiary or
affiliate of Employer.

	6.
	The
Employment Agreement shall terminate immediately upon Executive's death, and all of the Employer's obligations under this Employment Agreement shall cease at that time.

	7.
	The
Employment Agreement (including Attachment A) may only be modified by a writing signed by Executive and an authorized
representative of the Employer.

	8.
	The
Employment Agreement (including Attachment A) and all matters related thereto will be governed by the laws of the State of
your location of employment. 

2

 
 
 

[Letterhead of Laporte Inc.]    
    

August 26,
1999 

Strictly
Personal—Addressee Only 

Thomas
J. Riordan

1576 River Road

New Hope, PA 18938 

Dear
Tom: 

        We
are very conscious of the fact that recent speculation concerning a potential take-over of Laporte plc will have been very unsettling for our employees. We are
particularly concerned that Laporte Inc. Princeton employees may feel that their jobs would be at risk in the event of a take-over. The Company has therefore decided to provide you
with enhanced severance terms, which will apply only in the event of a change of control of Laporte plc, defined as follows: 

A
change of control shall occur if fifty (50) per cent or more of the voting rights for the time being of Laporte plc or the right to appoint or remove a majority of the Board of Directors of
Laporte plc become vested in any individual or group of individuals or body corporate or any such persons acting in concert (as defined in the UK City Code on Takeovers and Mergers) other than for the
purpose of amalgamation or reconstruction. 

        The
enhanced severance terms, which will apply if your employment is involuntarily terminated (other than for "cause" (as defined below)) or you resign with "good reason" (as defined
below) at any time following a change of control, are effective immediately and are as follows: 

	6.
	Your
contractual twelve (12) month notice of termination will continue to remain in effect as set forth in the Letter Agreement dated October 13, 1994 and any payments
under these enhanced severance terms are in addition to and not payment in lieu of notice.

	7.
	In
addition to any amounts payable in lieu of notice and the Company's existing severance policy (2 weeks base salary plus 1 week salary for each year of service), you will also be
entitled to a lump sum cash payment in an amount equal to three (3) months base salary. Such payments will be subject to any applicable tax withholdings and will be paid in equal monthly
installments until paid in full.

	8.
	If
you are eligible for and elect continuation of health care coverage ("COBRA") under the Company's medical plan, the Company will pay your applicable COBRA premiums (on a net
after-tax basis) until the earlier of: (i) the date on which your COBRA eligibility ceases, or (ii) for a period of twelve (12) months commencing on the date of your
termination. Thereafter, if you continue to be eligible for COBRA coverage, you may continue your coverage for the balance of your COBRA period, in accordance with the terms of the Company's medical
plan, upon payment by you of the applicable premiums for such coverage.

	9.
	You
will continue to be furnished with the use of your Company car (subject to the existing terms and conditions for such use) until the end of the twelve (12) month notice
period (on a net after-tax basis).

	10.
	You
will be provided with outplacement support at a level consistent with previous Company practice.

	11.
	A
further enhanced severance payment equivalent to three (3) months salary will be paid if you are asked and agree to work for a period of three (3) months or longer
from the effective date of the change of control. 

3

 
	12.
	Your
entitlement to the enhanced severance terms is conditioned on you serving your contractual notice if required to do so. 

        For
purposes of this letter, "cause" shall mean (i) your willful and continued failure to substantially perform your duties (other than any such failure resulting from your
incapacity due to physical or mental illness), after written notice from the Company requesting such substantial performance is delivered to you, which notice identifies in reasonable detail the
manner in which the Company believes you have not substantially performed your duties and provides you a reasonable period in which to cure such failure, or (ii) any act of fraud, embezzlement
or theft on your part against the Company or its affiliates. You will be deemed to have resigned with "good cause" if you resign following (i) a reduction in your duties or responsibilities,
(ii) a reduction in your compensation or a material reduction in your employment benefits, (iii) a material breach by the Company of your Employment Agreement, if any, or (iv) a
change of the Company's headquarters, or of your principal place of employment, of more than twenty (20) miles. 

        It
is important that you understand that the provisions outlined in this letter are personal to you and should not be discussed with other members of staff. 

        If
you have any questions concerning the contents of the letter, please contact myself or George Battersby. 

Yours
sincerely, 

/s/
Michael J. Kenny 

Michael
J. Kenny 

4

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EXHIBIT 10.14

LAPORTE INC. FORM EMPLOYMENT AGREEMENT

ATTACHMENT A EXECUTIVE EMPLOYMENT TERMS

[Letterhead of Laporte Inc.]

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