Patent ID: 8168260
Filing Date: 2012-05-01
Classification: C08G,C08L

Abstract:
1. A cross-linkable elastomeric thermoplastic polyurethane that is urea free, isocyanurate free, oxazolinyl free, functional radically-polymerizable pendant group free and having terminal functional radically-polymerizable groups at both ends; and wherein the thermoplastic polyurethane has a molecular weight ranging from 12000 to 500000, wherein the thermoplastic polyurethane is the reaction product of a reaction system consisting of a polyfunctional isocyanate, a polyfunctional polyol and a monol or monoamine comprising radically-polymerizable unsaturation(s), a diol chain extender, and, optionally, a radically polymerizable co-crosslinker; and wherein the polyfunctional polyol is selected from the group consisting of polyesteramides, polythioethers, polycarbonates, polyacetals, polyolefins, polysiloxanes, polyesters, and polyethers, and wherein the radically polyermizable co-crosslinker comprises dipentaerythritolpentaacrylate, trimethylolpropanetrimethacrylate, ditrimethylolpropanetriacrylate, pentaerythritoltetraacrylate, trimethylolpropanetriacrylate, butanedioldimethacrylate, ethoxylated pentaerythritoltetraacrylate, hexanedioldimethacrylate, hexanedioldiacrylate, laurylmethacrylate, 2-phenoxyethylmethacrylate, 2-phenoxyethylacrylate, polyethyleneglycoldiacrylate, polypropyleneglycoldiacrylate, poycaprolactonediacrylate, or combinations thereof.