Patent ID: 6379769
Filing Date: 2002-04-30
Classification: C09K,E06B,F24S,G02F,Y02B,Y02E,Y10T

Abstract:
A temperature controlled radiation transmission material comprising:at least one core of a thermotropic polymer blend having a lower critical separation temperature surrounded on all sides by a transparent sheath layer, wherein the thermotropic polymer blend is a blend of polymers selected from the group consisting of polystyrene, polyvinyl methyl ether, polymethyl (meth)acrylate, styrene-acrylonitrile copolymers, poly-&egr;-caprolactone, chlororubber, ethylene-vinyl acetate copolymers, PVC, polycarbonate, polyvinylidene fluoride, polyethyl acrylate, poly-n-butyl acrylate, poly(ethylhexyl acrylate-co-acrylic acid), poly(tetradecyl methacrylate-co-styrene-co-3-dimethylamino-2,2-dimethlylprop-1-yl methacrylate), poly(styrene-co-hydroxyethyl methacrylate) and poly-propylene oxide.