Silicone Surfactants

Siltech Corporation
225 Wicksteed Avenue
Toronto . Ontario . Canada . M4H 1G5

for the Polyurethane Industry

Telephone: 416.424.4567
Facsimile: 416.424.3158

Toronto Head Office, Research Lab and Plant

Mississauga, Ontario, Canada Plant

www.siltech.com
ISO 9001:2015

YOUR TECHNOLOGY OUR CHEMISTRY
March, 2019

A Message to Our Customers
Siltech Corporation develops, manufactures and markets a full line of high-quality
organo-functional silicone surfactants and related specialties for use in formulating
polyurethane foams. Our silicone surfactant products, known as the SILSTAB®
series, are used in a variety of polyurethane applications, including rigid foams,
flexible foams and elastomers.

Siltech’s silicones are manufactured in Ontario, Canada. Each of our state-of-the-art facilities
are equipped with dedicated large-scale reactors utilizing our novel hydrosilation manufacturing
process technology. To ensure the consistent production of the highest-quality products, weemploy advanced in-process controls to prevent variations.
At Siltech’s two manufacturing sites, our pilot plant facilities also produce experimental silicone
surfactants and smaller quantities to meet our customers’ unique requirements.
We also have an advanced analytical laboratory, which features the latest instrumentation.
Finally, Siltech’s technical service laboratory is equipped to completely evaluate the performanceof our products in various polyurethane foams.
Siltech focuses on doing it right the first, and every time, and always to our customer’s satisfaction. This commitment

We are proud of Siltech’s extensive product range as well as our capability to supply products

to excellence is illustrated by Siltech’s ISO 9001:2015 registration. This ISO standard covers every aspect ofthat are specifically tailored to our customers’ needs. We are enthusiastic about our ability to

our business, from product development and manufacturing, to customer service and purchasing, to handlingand shipping.
Everything is done with our customers’ needs in mind.

SILSTAB® is a registered trademark of Siltech Corporation.

provide knowledgeable technical service and to remain in the forefront of silicone technology.
While the information herein is believed to be reliable, we do not guarantee its accuracy. Purchasers are urged to make their own
tests with materials described herein. Various patents owned by Siltech Corp. or others may be pertinent to their use and tocompositions containing them. Nothing contained herein is intended as a recommendation to use our products so as to infringe
any patent. We assume no liability for customers’ violation of patent or other rights. The customer should make his own patent
investigation relative to his proposed use, and where a patent would be violated, the customer should secure a licence from thepatent owner. Each formulator should evaluate his products to determine strength, character, performance and safety. Federal,state and local laws and applicable regulations should be consulted.

Rigid Polyurethane Foam — Silstab® Silicone Surfactants Selection Guide
APPLICATIONPRODUCTDESCRIPTION/FEATURE
WATER

Appliance/
Pour-In-Place
Low Density

Spray

Pour-In-PlaceHigh Density

MDI
Compatible

APPLICATIONBLOWING AGENTS
HFC-365mfc

HFC-134a

HYDROCARBONS

HFC-245fa

DESCRIPTION/FEATURE

PRODUCTBLOWING AGENTS

HFO’s

WATER
Silstab 2935

Capped, improved emulsification.
Very fine cell structure, low K-factor.

Silstab 2955

Very fine cell structure, low K-factor.

Silstab 2966

Improved emulsification, fine cell structure,
low K-factor.

Silstab 2970

Improved emulsification, low K-factor.

Silstab 2975

Capped, improved emulsification,
low K-factor.

Silstab 2985

Strong nucleation, excellent flow and low
K-factor, reduced subsurface voids.

Capped, improved emulsification,low K-factor.

Silstab 2987

Strong nucleation, excellent flow and low
K-factor, reduced subsurface voids.

High functionality. Improved emulsification,finer cell structure, low K-factor.

Silstab 2993

Improved emulsification, fine cell structure,
low K-factor.

Silstab 2994

High functionality. Improved emulsification,finer cell structure, low K-factor.

Silstab 2755

Methyl-capped impart superior B-sidehydrolytic stability, high open cell,with wider processing latitude.

Silstab 2760

High open-cell content to prevent
shrinkage, hydrolytically stable.

Silstab 2780

High open-cell content, hydrolyticallystable, wider processing latitude.

Silstab 2000

General purpose.

Silstab 2100

General purpose.

Silstab 2550

General purpose, excellent flowand low K-factor.

Silstab 2580

Strong nucleation, improved flow,
reduced subsurface voids, lower K-factor.

Silstab 2590

Strong nucleation, superior flow,
low K-factor.

Silstab 2955

Strong nucleation, excellent flow
and low K-factor.

Silstab 2965
Silstab 2985

PIR Bun/Boardstock

Silstab 2100

Improved nucleation and fire performance.

Silstab 2400

Smooth foam surface, low cost,
improved nucleation.

Silstab 2450

Smooth foam surface, low cost,
improved nucleation, wall and roofing.

Silstab 2100

General purpose, eliminates surface
defects.

Open-celled,pour, spray,
packagingfoam

Silstab 2300

General purpose.

Silstab 2800

Capped, eliminates surface defects
in high humidity conditions.

Silstab 2800

General purpose, non-reactivewith isocyanates.

Silstab 2791

Strong cell opener, hydrolytically stable.
Wide processing latitude.

Silstab 2850

Improved HFC-134a/MDI compatibility.

Silstab 2800

General purpose, prepolymer stable.

Silstab 2869

Cell opener, MDI compatible, 1-K foams.

Silstab 2850

Improved HFC-134a/MDI compatibility.

Silstab 2875

Improved HFO/MDI compatibility.

Silstab 2875

Improved HFO/MDI compatibility.

Silstab 2880

Improved HFO/MDI compatibility.

Silstab 2880

Improved HFO/MDI compatibility.

One
Component
Aerosol

HFC-365mfc

HFC-134a

HYDROCARBONS

HFC-245fa

HFO’sProperties for Silstab® Silicone Surfactants for Rigid Polyurethane Foam
PRODUCT

SPECIFIC GRAVITY

WATER SOLUBILITYHYDROXYL No.

FREEZING POINT

FLASH POINT

˚

25 C

˚@10%mg KOH/gC

˚

˚C

Silstab 2869

1,500

1.030

Soluble0<0>100>100

Silstab 2875

2,000

1.070

Soluble0<0>1002>100

Silstab 2880

2,800

1.050

Soluble0<0>1000>100

Silstab 2935

600

1.040

Soluble10<0>10060<0>100

Silstab 2955

4001.050

Soluble50<0>100

Dispersible

55<0>100

Silstab 2965

1,2001.130

Dispersible

40<0>1001.050

Soluble190<0>100

Silstab 2966

1,600

1.080

Dispersible

95<0>1001.030

Soluble60<0>100

Silstab 2970

3,500

1.127

Dispersible

155

4>100

1,000

1.030

Soluble10<0>100

Silstab 2975

2,000

1.070

Soluble0<0>100

Silstab 2760

2,0001.110

Soluble25<0>100

Silstab 2985

1,600

1.070

Soluble0<0>100

Silstab 2780

1,1001.030

Soluble35<0>100Silstab 2987

2,600

1.100

Dispersible

1004>100

Silstab 2791

800

1.040

Soluble50<0>100

Silstab 2993

2,000

1.070

Dispersible

35<0>100

Silstab 2800

600

1.056

Soluble0<0>100

Silstab 2994

1,200

1.000

Soluble30<0>100

Silstab 2850

250

1.040

Soluble0<0>100

PRODUCTVISCOSITY

SPECIFIC GRAVITY

WATER SOLUBILITYHYDROXYL No.

FREEZING POINT

FLASH POINT

˚

25 C

˚

@10%

mg KOH/gC˚˚

Silstab 2000

600

1.051

Soluble56<0>100

Silstab 2100

300

1.055

Soluble85<0Silstab 2300

460

1.044

Dispersible

62

Silstab 2400

600

1.060

Soluble70

Silstab 2450

1,300

1.040

SolubleSilstab 2550

800

1.047

Silstab 2580

4,000

Silstab 2590

600

Silstab 2755

25 C mPas

CVISCOSITY
25 C mPas

Silstab® Silicone Surfactants for Flexible Polyurethane Foam
Siltech Corporation is focused on meeting our customers’ high expectations by committing significant resources toresearch and new product development. We also work closely with our customers to form responsive partnerships
enabling us to develop innovative product solutions. It is through attentive listening and integration of our market
knowledge that we are able to develop superior products and processes. To maintain our leadership position insilicone innovation, we are committed to a management process that allows our people to be trained, encouraged
and challenged to produce superior results. We also pledge to conduct every aspect of our business in a safe andenvironmentally responsible manner.
Moulded - Flexible Polyurethane Foam
PRODUCTPROPERTYAPPLICATIONVISCOSITY˚

25 C mPas

Silstab 3000

General purpose, TDI HR mouldedfoam, medium potency.

Automotive seating, furniture,
TDI and TDI/MDI systems.

Silstab 3040Low fogging, medium potency, impart
reduced surface defects. Strong bulkstabilizer.

Automotive seating, furniture,
TDI and TDI/MDI systems.

Silstab 3055

High potency, impart reduced surfacedefects.

Moulded TDI HR foams.

Silstab 3070

Low fogging, TDI HR moulding, withmedium potency. Improved bulk stability.

TDI and MDI HR systems.

375

500

400

50

SPECIFIC GRAVITYHYDROXYL No.

˚mg KOH/g

25 C

1.0

1.01

1.02

1.01

23

Slab - Flexible Polyurethane Foam
PRODUCT

Universal surfactant with wide processing.

HR slab foams.

1301.050

Silstab 3900

Low fogging, cell regulator and surface
stabilizing surfactant. Used as co-additive.

HR moulded foams, TDI,
TDI/MDI or MDI foam systems.

100.93210

SPECIFIC GRAVITYHYDROXYL No.

˚25 C

˚

mg KOH/g

VISCOSITY
25 C mPas

General purpose, wide processing,
low potency.

Slab foams.

370

1.00

24

Silstab 3115

General purpose, low potency.

High density slab foams(30-43 kg/m3)

500

1.02

75

Silstab 3120

General purpose, B-side stable.

Mid density slab foams.
(9-40 kg/m3).

800

1.0130

Silstab 3135

General purpose, wide processinglatitude, with medium potency.

Low density slab foams.

900

1.0280

Silstab 3165

Universal surfactant, with wideprocessing latitude, high potency.
Non-hydrolyzable, B-side stable.

Low density slab foams(8-32 kg/m3).

800

1.02

22

Silstab 3185

General purpose, with highpotency, B-side stable.

Slab foams.

600

1.0180

Silstab 3200

Used as a co-surfactant.

Viscoelastic slab foams.

9,500

0.92

75

Silstab 3300

Medium potency.

C02-blown slab foams.

1,2001.02120

Silstab 3401

Universal surfactant for polyester
polyol systems.

Slab foams.

530

1.0190

Silstab 3600

Wide processing latitude.

Super-soft slab foams.

850

1.05

18075

Silstab 3085

APPLICATION

Silstab 3100

3028

PROPERTY

Rigid Polyurethane Foam — Siltech’s SILSTAB® silicone surfactants are used to stabilize rigid polyurethane foam systems. The selection of the proper silicone
stabilizer depends on the chemical formulation (polyols, isocyanates, blowing agents, etc.) of the foam system, the manufacturing process (spray, pour,etc.) and the desired foam properties. Siltech offers a comprehensive range of silicone surfactants for water-blown systems, including both open and closedcell. Siltech also offers novel silicone surfactants for the next generation of blowing agents such as HFC, HFO and hydrocarbons. Typical applications
include spray, boardstock, pour-in-place and high-density moulded foams.

Specialty Applications — Footwear, Microcellular Foams
PRODUCTPROPERTY/DESCRIPTION & APPLICATION

Silstab 2100

Standard surfactant for microcellular foams recommended for polyether andpolyester shoe sole formulations, medium strength nucleator.

Silstab 2550

Recommended for polyether and polyester shoe sole formulations, for low tohigh densities, strong nucleator, improved flow, reduced surface skin defects
and reduced shrinkage.

Silstab 3000

Cell regulator for polyether and polyester shoe sole formulations, used in mid
to high densities. Imparts excellent flow, reduced shrinkage and reduced
surface skin defects.

Siltech offers a wide range of SILSTAB® silicone surfactants for use in formulating high resilience (HR) mouldedand flexible slab foams. These products offer the producers: a variety of stabilizing and cell regulating
efficiencies; an optimum balance between stabilizing and cell regulating without sacrificing foam breathability
and crushability; and a low volatile/fogging contribution in freshly made foam.

Silicone Surfactants

Siltech Corporation
225 Wicksteed Avenue
Toronto . Ontario . Canada . M4H 1G5

for the Polyurethane Industry

Telephone: 416.424.4567
Facsimile: 416.424.3158

Toronto Head Office, Research Lab and Plant

Mississauga, Ontario, Canada Plant

www.siltech.com
ISO 9001:2015

YOUR TECHNOLOGY OUR CHEMISTRY
March, 2019