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US 9,783,699 B2Granted
Laminates and articles comprising a block copolymer coating comprising polyorganosiloxane and polyolefin
Assignee3M Innovative Properties Company
InventorsShilpi K. Sanghi, Yu Yang, Suresh S. Iyer, Yongshang Lu
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Abstract
Intermediate laminates and articles comprising a low adhesion backsize coating are described. The laminate comprises a substrate having a major surface and opposing surface and a coating comprising a block copolymer disposed on a major surface of the substrate wherein the block copolymer comprises a polyorganosiloxane block and a polyolefin block, the polyolefin block having a melt point of at least 110° C. Also described are medical dressings comprising such laminate.
Claims20
A laminate comprising
- a substrate having a major surface and opposing surface;
- and
- a coating comprising a block copolymer disposed on major surface of the substrate wherein the block copolymer comprises a polyorganosiloxane block and a polyolefin block, the polyolefin block having a melt point of at least 110° C. wherein the block copolymer has the structure
- A[-L-B]n
- wherein n is at least 1,
- A is the polyorganosiloxane block,
- B is the polyolefin block comprising a polypropylene homopolymer or copolymer, and
- L is a divalent linking group comprising the reaction product of an amine or hydroxyl and an anhydride;
- and
- wherein the block copolymer comprises at least 40 wt-% of polyorganosiloxane.
7 more elements
Dependencies are inferred from the claim text.