(Meth)acrylic copolymer, adhesive composition containing same, and adhesive sheet
US11306171B2 · kind B2 · utility
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16Claims
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Key dates
| Filing date | Feb 21, 2020 |
| Grant date | Apr 19, 2022 |
| Priority date | — |
| Expiry date | Jun 19, 2040 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08F222/103
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A (meth)acrylic copolymer (A) having a mass average molecular weight of 50,000 to 1,000,000, in which the (meth)acrylic copolymer (A) is obtained by polymerizing a monomer mixture including a macromonomer (a) that has a number average molecular weight of 500 or more and less than 6000 and a vinyl monomer (b), and preferably includes 7 to 40% by mass of a repeat unit derived from the macromonomer (a), has sufficient coating workability, adhesive holding power and adhesive property as an adhesive composition.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.