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US 2007/0177273 A1Published application
Films including thermoplastic silicone block copolymers
Assignee3M Innovative Properties Company
InventorsKarl Benson, Richard Hansen, Stephen Johnson, Charles Leir, Richard Liu, Mark Purgett, Hildegard Schneider, Audrey Sherman
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Abstract
A composite film includes a first film and a second film contiguous to the first film. The first film includes a light transmissive material. In one embodiment, the second film includes a polydiorganosiloxane polyamide block copolymer. In another embodiment, the second film includes a polydiorganosiloxane polyoxamide block copolymer.
Claims18
A composite film comprising:
- a first film comprising a light transmissive material;
- and
- a second film contiguous to said first film, the second film comprising a polymeric material comprising at least 2 repeat units of Formula I:
- wherein each R1 is independently an alkyl, haloalkyl, aralkyl, alkenyl, aryl, or aryl substituted with an alkyl, alkoxy, or halo;
- each Y is independently an alkylene, aralkylene, or a combination thereof,
- G is a divalent residue equal to a diamine of formula R3HN-G—NHR3 minus the two —NHR3 groups;
- R3 is hydrogen, alkyl, or taken together with G and to the nitrogen to which they are both attached form a heterocyclic group;
- n is independently an integer of 0 to 1500;
- each B is independently a covalent bond, an alkylene of 4-20 carbons, an aralkylene, an arylene, or a combination thereof, and
- p is an integer of 1 to 10.
7 more elements
A composite film comprising:
- a first film comprising a light transmissive material;
- and
- a second film contiguous to said first film, the second film comprising a polydiorganosiloxane polyamide block copolymer.
Dependencies are inferred from the claim text.