Process for producing powdery composite polymer
US4547549A · kind A · utility
4Cited by
5References
6Claims
0Family size
Assignee
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Key dates
| Filing date | Feb 5, 1985 |
| Grant date | Oct 15, 1985 |
| Priority date | — |
| Expiry date | Feb 5, 2005 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L9/02
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A process for producing a powdery composite polymer, which comprises mixing in an aqueous medium (A) a particulate vinyl chloride polymer, (B) an elastomer containing a nitrile group and (C) a solvent for the elastomer (B) which is not miscible with water and is a poor solvent for the polymer (A), thereafter removing the solvent (C) from the mixture, and dehydrating and drying the mixture thereby to form a powdery composite polymer composed of the vinyl chloride polymer (A) and the nitrile group-containing elastomer (B).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.