Thermosetting compositions containing hydroxyl-functional polymers prepared using atom transfer radical polymerization
US6319987A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 16, 1999 |
| Grant date | Nov 20, 2001 |
| Priority date | — |
| Expiry date | Aug 16, 2019 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31855
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A thermosetting composition is provided comprising: PA1 (a) a crosslinking agent having at least two functional groups that are reactive with hydroxyl groups; and PA1 (b) a non-gelled, hydroxyl functional polymer prepared by atom transfer radical polymerization, in the presence of an initiator having at least one radically transferable group. The polymer contains at least one of the following polymer chain structures: EQU --{(M).sub.p --(G).sub.q }.sub.x -- or EQU --{(G).sub.q --(M).sub.p }.sub.x -- PA1 wherein M is a residue, that is free of hydroxyl functionality, of at least one ethylenically unsaturated radically polymerizable monomer; G is a residue, that has hydroxyl functionality, of at least one ethylenically unsaturated radically polymerizable monomer; p and q represent average numbers of residues occurring in a block of residues in each polymer chain structure; and p, q, and x are each independently selected for each structure such that the hydroxyl functional polymer has a number average molecular weight of at least 250.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.