Process to make a composition comprising a monovinylaromatic polymer and a polymer made from renewable resources
US9527993B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 23, 2009 |
| Grant date | Dec 27, 2016 |
| Priority date | — |
| Expiry date | Nov 20, 2032 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L51/08
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A process to make a composition that includes a monovinylaromatic polymer and a dispersed phase of polymer made from renewable resources may include forming a polymerizable mixture. The polymerizable mixture may include a monomer or dimer dispersed in a monovinylaromatic monomer, and optionally a rubber dissolved in the monovinylaromatic monomer. The process may include contacting a catalyst with the polymerizable solution at conditions effective to produce a polymer dispersed in the monovinylaromatic monomer. The process may include polymerizing through a radical pathway the solution, optionally in the presence of a free radical initiator and a chain transfer agent, to obtain a monovinylaromatic polymer that includes a dispersed phase. The process may include degassing to separate unpolymerized monomers and comonomers, and recovering a composition of monovinylaromatic polymer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.