Process for improving properties of synthetic resin powder
US4918118A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 11, 1988 |
| Grant date | Apr 17, 1990 |
| Priority date | — |
| Expiry date | Apr 11, 2008 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08J2351/04
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A process for improving properties of a synthetic resin powder by subjecting a latex of a graft-copolymer whose back bone is a rubber to coagulation, and adding a lubricant to the graft-copolymer in an amount of 0.01 to 10 parts by weight based on 100 parts by weight of said graft-copolymer, and then removing water. The bulk specific gravity of a synthetic resin powder produced is large, the flowability and blocking resistance are remarkably improved in comparison with known methods and blocking during storage is prevented. Lines for transporting the powder do not become packed with the resin powder. It is possible to automatically weigh the resin powder, and the powder does not exhibit a tendency to increase in volume during mass transport.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.