Polymer scale preventive agent, polymerization vessel for preventing polymer scale deposition, and process of producing polymer using said vessel
US5254646A · kind A · utility
1Cited by
2References
4Claims
0Family size
Assignee
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Key dates
| Filing date | Sep 6, 1991 |
| Grant date | Oct 19, 1993 |
| Priority date | — |
| Expiry date | Sep 6, 2011 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08F2/004
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A polymer scale preventive agent for use in polymerization of a monomer having an ethylenic double bond, comprising at least one compound selected from the group consisting of agars and agaroses. A process of producing a polymer by polymerizing the monomer in a polymerization vessel having on its inner wall surfaces a coating comprising the scale preventive agent. Polymer scale deposition inside the polymerization can be effectively prevented, and polymers with high whiteness can be prepared. Moreover, the scale preventive agent no poisonousness and is highly safe.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.