Patent ID: 6780566
Filing Date: 2004-08-24
Classification: G03F

Abstract:
A high performance, photoimageable resin composition comprising:(I) in the range of 20 up to about 75 wt % of at least one copolymer comprising: (i) 5 up to about 95 mol % of at least one aliphatic conjugated diene monomer, (ii) 1 up to about 30 mol % of at least one a &agr;,&bgr;-ethylenically unsaturated carboxylic acid, sulfonic acid, phosphonic acid, amine, or ammonium, (iii) 0.1 up to about 10 mol % of at least one polyfunctional vinyl monomer, (iv) 0 up to about 70 mol % of at least one monofunctional vinyl monomer, and (v) 0 up to about 50 mol % of at least one emulsifier per mol of free carboxyl, sulfonyl, phosphonyl, ammonium, or amine, (II) in the range of 5 up to about 35 wt % of a linear thermoplastic, elastomeric polymer of formula B, or block copolymer having at least one unit of the general formula (A-B), (A-B)n, or (A-B-A), wherein A is a non-elastomeric polymer block having a number average molecular weight in the range of about 2,000 to about 100,000 and a glass transition temperature above about 25Â° C. and B is an elastomeric polymer or polymer block having a number average molecular weight in the range of about 25,000 to about 1,000,000 and glass transition temperature below about 10Â° C., (III) a (meth)acrylate terminated urethane oligomer having molecular weight from 2000 to about 100,000 having the structure: â€ƒwherein: each R is independently â€”H or methyl, each R1 is independently straight or branched chain lower alkylene, oxyalkylene, alkenylene, and/or oxyalkenylene, each R2 is independently straight or branched chain alkylene, cycloalkylene, arylene, or alkylarylene, each R3 is independently straight or branched chain alkylene, oxyalkylene, alkenylene, and/or oxyalkenylene, and z is 1 to about 100, (IV) at least one monofunctional, ethylenically unsaturated monomer having the structure: â€ƒwherein: R is â€”H or methyl, and X is an alkyl group having in the range of about 4 up to about 40 carbon atoms, (V) in the range of 5 to about 25 wt % of at least one polyfunctional, ethylenically unsaturated monomer having the core structure: â€ƒwherein: R is as defined above and Xâ€² is selected from: (i) alkylene or substituted alkylene having in the range of 1 up to about 50 carbon atoms, and b is 1, (ii) oxyalkylene or substituted oxyalkylene having in the range of 1 up to about 200 carbon atoms, and b is 1, (iii) a polyvalent alkylene or oxyalkylene moiety, wherein b is 2.3 or 4,and (iv) a bisphenolyl moiety; (VI) in the range of 2 to about 35 wt % of a basic nitrogen-containing compound, (VII) in the range of 0 to about 20 wt % of at least one plasticizer having carboxyl, sulfonyl, phosphonyl, ammonium, or amine groups, or alkoxylated derivatives thereof, having from 5 to about 500 carbon atoms, or a mixture of any two or more thereof, (VIII) in the range of 0.05 to about 5 wt % of a chain transfer agent, (IX) in the range of about 0.01 to about 10 wt % of a photopolymerization initiation system, and (X) in the range of 0 to about 5 wt % of a tack reducing agent.