Vinylidene substituted aromatic monomer and cyclic (meth)acrylate ester polymers
US11319389B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 4, 2019 |
| Grant date | May 3, 2022 |
| Priority date | — |
| Expiry date | Oct 4, 2039 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L25/14
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Compositions comprising at least one copolymers comprising: a) from 20 to 90 percent by weight of one or more vinylidene substituted aromatic compounds; b) from 10 to 80 percent by weight of one or more cyclic (meth)acrylate esters; c) from 0 to 40 percent by weight of one or more unsaturated nitriles; and, d) from 0 to 60 percent by weight of an alkyl (meth)acrylate; wherein based on the weight of the copolymer and the copolymer has a weight average molecular weight of 120,000 g/Mole or greater and a glass transition temperature of 100° C. or greater. Disclosed are articles prepared from the compositions which may be fabricated in any known manner. The copolymers, compositions and articles disclosed contain reduced levels of the one or more free/residual/unreacted monomers, such as unsaturated nitriles; may be transparent or opaque; or have a biobased monomer content of 5 percent by weight or greater.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.