| 摘要 |
An encapsulated assemblage and a process for making comprising: (a) silanizing a substrate; (b) coating the silanized substrate with at least one thin extruded coherent film consisting essentially of: (1) about 75-90 parts by weight of: (a) about 65 to about 75 parts of a selectively hydrogenated two-block polymer (A-B) such that prior to hydrogenation, (1) each A is a polymer block of a monovinyl or alpha alkyl monovinyl arene having a number average molecular weight of 5000 to 75,000 and comprising from about 10 to about 40% by weight of the total block copolymer, and (2) each B is a polymer block having a number average molecular weight of 10,000 to 150,000 and comprising from about 90 to about 60% weight of the total block copolymer, and (b) about 25 to about 35 parts by weight of a selectively hydrogenated multiblock copolymer (A-B) such that: (1) each A is a polymer endblock of a monovinyl or alpha alkyl monovinyl arene having a number average molecular weight of 5,000 to 75,000, said A blocks comprising from about 10 to about 40% by weight of the total block copolymer, and (2) each B is a polymer midblock having a number average molecular weight of 10,000 to 150,000 and is formed by polymerizing a conjugated diene having from 4 to 10 carbon atoms per molecule, and said B blocks comprising from about 90 to about 10% weight of the total block copolymer and (2) about 9.5 to about 23.5 parts by weight of a hydrogenated alpha -methyl styrene polymer resin; (3) about 0.5 to about 1.5 parts by weight of a phenolic antioxidant, a UV absorber with benzotriazole functionality, and a UV absorber with hindered amine functionality; (c) vacuum laminating the assemblage; and (d) heat sealing said assemblage.
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