HIGH PERFORMANCE POLYURETHANE PREPOLYMER AND CURING COMPOSITIONS

    公开(公告)号:EP3377551B1

    公开(公告)日:2019-08-28

    申请号:EP16794491.7

    申请日:2016-11-01

    发明人: DOYLE, Thomas, R.

    摘要: Compositions comprising isocyanate capped polyurethane prepolymers and select mono-benzyl phthalate plasticizers, e.g., 7-(2,6,6,8-tetramethyl-4-oxa-3-oxo-nonyl) benzylphthalate, exhibit better isocyanate stability than prepolymer compositions comprising other plasticizers common in polyurethane systems. Curing compositions comprising these prepolymers, the select mono-benzyl phthalate plasticizers, and methylenedianiline coordination complex curing agents exhibit improved processing characteristics and yield elastomeric polyurethanes with lower compression set, higher break strength and lower color than similar composition comprising plasticizers such as benzoate plasticizers.

    HIGH PERFORMANCE POLYURETHANE PREPOLYMER AND CURING COMPOSITIONS

    公开(公告)号:EP3377551A1

    公开(公告)日:2018-09-26

    申请号:EP16794491.7

    申请日:2016-11-01

    发明人: DOYLE, Thomas, R.

    摘要: Compositions comprising isocyanate capped polyurethane prepolymers and select mono-benzyl phthalate plasticizers, e.g., 7-(2,6,6,8-tetramethyl-4-oxa-3-oxo-nonyl) benzylphthalate, exhibit better isocyanate stability than prepolymer compositions comprising other plasticizers common in polyurethane systems. Curing compositions comprising these prepolymers, the select mono-benzyl phthalate plasticizers, and methylenedianiline coordination complex curing agents exhibit improved processing characteristics and yield elastomeric polyurethanes with lower compression set, higher break strength and lower color than similar composition comprising plasticizers such as benzoate plasticizers.