Polymerizable compositions based on difunctional thio(meth)acrylate monomers and transparent polymer compositions obtained therefrom
US6184323A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jul 15, 1998 |
| Grant date | Feb 6, 2001 |
| Priority date | — |
| Expiry date | Jul 15, 2018 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B1/041
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The composition includes, based on the total weight of polymerizable monomers present in the composition: PA1 a) 10 to 70% by weight of a difunctional thio(meth)acrylate monomer, of formula (I): ##STR1## in which R.sub.1 and R.sub.2 denote a hydrogen atom or a radical --CH.sub.3, or of a mixture of at least one monomer of formula (I) with at least one monomer of formula (II): ##STR2## in which R'.sub.1 and R'.sub.2 denote a hydrogen atom or a radical --CH.sub.3 ; PA1 b) 10 to 60% by weight of at least one monomer of formula (III): ##STR3## in which R.sub.3 and R.sub.4 denote a hydrogen atom or a radical --CH.sub.3 and O.ltoreq.m +n.ltoreq.10; and PA1 c) 5 to 30% by weight of at least one aromatic or polycyclane mono(meth)acrylate monomer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.