Adhesive blends, articles, and methods
Assignee3M Innovative Properties Company
InventorsJianhui Xia, Ying-Yuh Lu
Life of this patent
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Abstract
Described are adhesive compositions containing a mixture of a pressure sensitive adhesive, a high Tg polymer, and a crosslinker to form a compatibilized blend that is optically clear. Methods of using the adhesive compositions, and multilayer assemblies such as optical elements prepared using the adhesives, are also provided.
Claims39
An adhesive composition comprising a blend of:
- a majority of a pressure sensitive adhesive component comprising at least one polymer with an acid or base functionality,
- a high Tg polymer with an weight average molecular weight greater than 100,000 comprising an acid or base functionality, and
- a crosslinker;
- wherein the functionality of the pressure sensitive adhesive component and the functionality of the high Tg polymer form an acid-base interaction when mixed.
A multi-layer assembly coated with an adhesive composition comprising an a mixture of:
- a majority of a pressure sensitive adhesive component comprising at least one polymer with an acid or base functionality,
- a high Tg polymer with an weight average molecular weight greater than 100,000 comprising an acid or base functionality, and
- a crosslinker;
- wherein the functionality of the pressure sensitive adhesive component and the functionality of the high Tg polymer form an acid-base interaction when mixed;
- wherein the adhesive composition is optically clear, and wherein the adhesive composition bonds at least two layers together.
A method of preparing a multi-layer article, the method comprising
- coating onto a substrate an adhesive composition comprising a mixture of:
- a majority of a pressure sensitive adhesive component comprising at least one polymer comprising an acid or base functionality,
- a high Tg polymer with an weight average molecular weight greater than 100,000 comprising an acid or base functionality, and
- a crosslinker;
- wherein the functionality of the pressure sensitive adhesive component and the functionality of the high Tg polymer form an acid-base interaction when mixed.
An adhesive composition comprising a blend of:
- a majority of a pressure sensitive adhesive component comprising at least one polymer with an acid functionality,
- a high Tg polymer comprising a base functionality imparted by an amide group, and
- a crosslinker;
- wherein the functionality of the pressure sensitive adhesive component and the functionality of the high Tg polymer form an acid-base interaction when mixed;
- and
- wherein the pressure sensitive adhesive component is free of alkoxy (meth)acrylates.
An adhesive composition comprising a blend of:
- a majority of a pressure sensitive adhesive component comprising at least one polymer with a base functionality,
- a high Tg polymer comprising an acid functionality, and
- a crosslinker;
- wherein the functionality of the pressure sensitive adhesive component and the functionality of the high Tg polymer form an acid-base interaction when mixed.
Dependencies are inferred from the claim text.