PRESSBAR POLYMER KOMPOSITION FRAMSTELLD GENOM DELVIS REAKTION AV PREKURSORER TILL EN POLYURETAN OCH PREKURSORER TILL ETT HERDAT POLYESTERHARTS I NERVARO AV EN LJUSKENSLIG KATALYSATOR OCH EN URETANKATALYSATOR

摘要

A polymeric composition which is capable of being shaped and which preferably is in the form of a sheet, the composition being formed by partially reacting a mixture of (a) the precursors of a polyurethane comprising at least one polyfunctional compound capable of reacting with isocyanate groups and at least one polyisocyanate, and, (b) the precursors of a cured polyester resin comprising at least one ethylenically unsaturated polyester and at least one ethylenically unsaturated monomer copolymerizable therewith, and the composition containing at least one alpha, alpha diketone as a photosensitive catalyst.