B - Operations – Transporting – 32 – B
Patent
B - Operations, Transporting
32
B
154/89
B32B 17/10 (2006.01) C03C 17/32 (2006.01) H05K 1/03 (2006.01) B32B 31/16 (1990.01) B32B 31/26 (1990.01) B32B 31/30 (1990.01)
Patent
CA 1292668
ENCAPSULATED ASSEMBLAGE AND METHOD OF MAKING Abstract of the Disclosure An encapsulated assemblage and a process for making an encapsulated assemblage comprising: (a) silanizing a substrate thereby forming a silanized substrate; (b) coating said silanized substrate with at least one thin extruded coherent film forming a coated substrate, said film consisting essen- tially of: (1) about 75 to about 90 parts by weight of a blend of: (a) about 65 to about 75 parts by weight of a selectively hydrogenated two-block polymer wherein one polymer block is designated by A and a second polymer block is designated by B such that prior to hydrogenation, (l) each A is a polymer block of a monovinyl or alpha alkyl monovinyl arene having a number average molecular weight in the range of from about 5,000 to about 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 block having a number average molecular weight in the range of from about 10,000 to about 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 60% weight of the total block copolymer, and (b) about 25 to about 35 parts by weight of a selectively hydrogenated multiblock copolymer which contains at least two kinds of polymer blocks wherein one polymer block is designated by A and a second polymer block is designated by B such that: (1) each A is a polymer endblock of a monovinyl or alpha alkyl monovinyl arene having a number average molecular weight in the range of from about 5,000 to about 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 in the range of from about 10,000 to about 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 IV absorber with hindered amine functionality; (c) applying a vacuum to the assemblage thereby forming a pressure gradient between said substrate and said film, and thereby vacuum laminating the assemblage; and (d) heating said vacuum laminated assemblage to a temperature greater than the softening point of said film and less than the melting point of solder and thereby heat sealing said assemblage.
568645
Danforth Richard Louis
Samuelson Gay Marie
St. Clair David John
Shell Internationale Research Maatschappij B.v.
Swabey Ogilvy Renault
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