Continuous process for producing rubber modified high-impact resins
US4587294A · kind A · utility
Assignees
Inventors
Key dates
| Filing date | Oct 25, 1983 |
| Grant date | May 6, 1986 |
| Priority date | — |
| Expiry date | Oct 25, 2003 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S525/942
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
In a continuous bulk or solution polymerization process for producing rubber modified high-impact resins which comprises continuously feeding a raw material solution comprising a mixture of an aromatic vinyl monomer and a vinyl cyanide monomer and a rubber component dissolved in the mixture, together with a radical polymerization initiator, to a first reactor, polymerizing the raw material solution under high-shear agitation to a conversion required to transform the rubber component phase into dispersed particles, withdrawing the reaction mixture continuously from the first reactor at a rate corresponding to the feed rate of the raw material solution, and feeding the reaction mixture to a second or more reactors for further polymerization, rubber modified high-impact resins exhibiting excellent chemical resistance, thermal resistance and rigidity and having a good surface gloss can be produced by properly determining the weight ratio of the aromatic vinyl monomer to the vinyl cyanide monomer present in the raw material solution, the content of the rubber component in the raw material solution, the content of the solvent in the raw material solution, the property of the rubber compo…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.