Room temperature polymerization of acrylate monomers with peroxyesters
US4429092A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Dec 6, 1982 |
| Grant date | Jan 31, 1984 |
| Priority date | — |
| Expiry date | Dec 6, 2002 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08F265/06
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A composition for preparing polymeric articles comprising: (a) an acrylic polymerizable component such as monomeric and polymeric aliphatic acrylate and methacrylate esters having a Brookfield viscosity of about 0.1-400 poise and about 5-60% by weight of solids; (b) copper and tin polymerization promoters providing in the composition about 0.05-4 ppm of Cu.sup.+2 and about 10-300 ppm of Sn.sup.+2 ; (c) about 5.times.10.sup.-6 to 1.times.10.sup.-4 mole/gm of the composition of a primary mercaptan chain transfer agent; and (d) sufficient peroxyester initiator to provide about 0.02-0.3% by weight of active oxygen in the composition. The composition is highly efficient at room temperature and provides excellent optical quality polymers while permitting a wide choice of peroxyesters as the initiator.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.