Mercaptan blocked thermosetting copolymers
First Claim
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1. A polymer prepared by the process comprising:
- a. reacting1. a polyester and2. a mercaptan comprising an organic compound containing an --SH group and another group which is reactive with said polyester to provide a mercapto-terminated reaction product;
b. reacting said mercapto-terminated reaction product with one or more ethylenically unsaturated monomers in the presence of a peroxygen or azo catalyst to form said polymer.
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Abstract
Block copolymers can be prepared by reacting a polyester resin or a polyol with a hydroxyl or carboxyl functional mercaptan and subsequently reacting the mercapto-blocked polyester or polyol in the presence of peroxygen-type or azo-type catalyst, with selected alpha, beta-ethylenically unsaturated monomer(s), such as diacetone acrylamide, acrylic acid, methacrylic acid, ethyl acrylate, butyl acrylate, styrene, methyl methacrylate, methacrylonitrile and the like. Such block copolymers provide for coating compositions having physical properties which provide for useful protective and decorative films.
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Citations
13 Claims
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1. A polymer prepared by the process comprising:
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a. reacting 1. a polyester and 2. a mercaptan comprising an organic compound containing an --SH group and another group which is reactive with said polyester to provide a mercapto-terminated reaction product; b. reacting said mercapto-terminated reaction product with one or more ethylenically unsaturated monomers in the presence of a peroxygen or azo catalyst to form said polymer. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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Specification