Process for improving properties of synthetic resin powder
US4904720A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 25, 1988 |
| Grant date | Feb 27, 1990 |
| Priority date | — |
| Expiry date | May 25, 2008 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L51/04
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A process for improving properties of a synthetic resin powder which comprises: subjecting a latex of a graft-copolymer whose back bone is a rubber to coagulation, and adding a silicone oil 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. According to the present invention, the bulk specific gravity of a synthetic resin powder can be made large, the flowability and blocking resistance can be remarkably improved in comparison with known methods. Accordingly, the blocking during storage can be prevented, a line for transport is not packed with the resin powder, it is possible to automatically weigh the resin powder, and it is applicable to the tendency to grow larger in transport.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.