Process for producing rubber modified styrene resins
US4388447A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 19, 1981 |
| Grant date | Jun 14, 1983 |
| Priority date | — |
| Expiry date | Nov 19, 2001 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08F291/02
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Disclosed is a process for continuously producing rubber modified styrene resins wherein the rubbery phase including a rubber-like polymer is transformed into dispersed particles by using a reactor having both a helical-blade agitator mounted in a draft tube and an auxiliary agitator, by establishing a specified agitating force and a specified degree of circulation of the fluid within the reactor, and by maintaining a specified relation between the weight percentages, based on the total amount of all components within the reactor, of the rubber-like polymer and the monomer converted to polymer. According to this process, various grades of high-impact rubber modified styrene resins having excellent surface properties can be obtained without any adhesion of rubber-like matter to the reactor and without any formation of fisheyes in final products.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.