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US 8,013,098 B2Granted
Branched polydiorganosiloxane polyamide copolymers
Assignee3M Innovative Properties Company
InventorsAudrey A. Sherman, David B. Olson, Stephen A. Johnson, Craig E. Hamer, David S. Hays, Richard G. Hansen
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Abstract
Branched polydiorganosiloxane polyamide, block copolymers and methods of making the copolymers are provided. The method of making the copolymers involves reacting one or more amine compounds including at least one polyamine with a precursor having at least one polydiorganosiloxane segment and at least two ester groups.
Claims10
An article comprising a release layer, the release layer comprising:
- a copolymer comprising at least two repeat units of Formula I-a:
- each R1 is independently an alkyl, haloalkyl, aralkyl, alkenyl, aryl, or aryl substituted with an alkyl, alkoxy, or halo;
- G is a polyvalent residue having a valence of q;
- R3 is hydrogen or alkyl or R3 taken together with G and to the nitrogen to which they are both attached form a heterocyclic group;
- each Y is independently an alkylene, aralkylene, or a combination thereof;
- each B is independently an alkylene of 4-20 carbons, an aralkylene, an arylene, or a combination thereof;
- n is independently an integer of 0 to 1500;
- p is an integer of 1 to 10;
- and
- q is an integer greater than 2.
7 more elements
Dependencies are inferred from the claim text.