Continuous process for preparing rubber modified high impact resin
US5210132A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 14, 1992 |
| Grant date | May 11, 1993 |
| Priority date | — |
| Expiry date | Oct 14, 2012 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08F279/02
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A process for preparing rubber modified high impact resins by dissolving a rubbery polymer in a monomer containing an aromatic vinyl monomer or a mixture of an aromatic vinyl monomer and a vinyl cyanide monomer followed by polymerizing the monomer, the two steps being carried out in at least two polymerization reactors with a particle disperser placed between the first and second reactors. High impact resins having excellent surface properties are obtained with a savings in a power consumption by controlling: PA1 (1) the relationship between the concentration of the polymerized monomer and the content of the rubbery polymer in the first reactor; PA1 (2) the relationship between the volume occupied by the polymerizing liquid in the first reactor and the inner volume of the particle disperser; and PA1 (3) the peripheral linear velocity of a shearing stirrer in the particle disperser.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.