Polymer having switchable tackiness
US6774199B2 · kind B2 · utility
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8Claims
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Key dates
| Filing date | Oct 11, 2002 |
| Grant date | Aug 10, 2004 |
| Priority date | — |
| Expiry date | Oct 11, 2022 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09K19/408
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The present invention relates to a polymer of formula (I), which has a liquid crystalline side chain and exhibits switchable tackiness at a narrow temperature range around its isotropic transition temperature: wherein,R1 is R2 is selected from the group consisting of —SO2—, —C(O)—, —CH(COOH)—, —C(COOH)2—, —C(S)— and —C(NH)—;R3 is —CH2— or —CF2—;R4 is H or F;a is an integer ranging from 30 to 500;b is an integer ranging from 1 to 3; andc is an integer ranging from 3 to 20.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.