Processes for preparing (meth)acrylic polymers having functional groups at the chain ends
US5986014A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 6, 1997 |
| Grant date | Nov 16, 1999 |
| Priority date | — |
| Expiry date | Feb 6, 2017 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08F8/42
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
(Meth)acrylic polymers having alkenyl or curable silyl groups at the chain ends high functionality ratios are prepared by a process which comprises (i) preparing a (meth)acrylic polymer having halogen atoms at the chain ends, using an organohalogenated compound or a halosulfonyl compound as an initiator and a metal complex catalyst wherein the central metal atom is selected from the group consisting of the elements of Groups 8, 9, 10 and 11 of the periodic table; and (ii) transforming the halogen atom into an alkenyl group- or a curable silyl group-containing substituent. The obtained (meth)acrylic polymers form homogeneous curing materials.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.