Method and apparatus for producing hips using continuous polybutadiene feed
US6143833A · kind A · utility
10Cited by
7References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 11, 1999 |
| Grant date | Nov 7, 2000 |
| Priority date | — |
| Expiry date | Jun 11, 2019 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L51/04
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A method and apparatus for use in making high impact polystyrene by polymerizing butadiene into polybutadiene, continuously exchanging styrene monomer for the solvent used to produce the polybutadiene, and polymerizing the resultant polybutadiene/styrene solution into high impact polystyrene. Apparatus is disclosed that includes butadiene and solvent preparation means, additive metering means, butadiene polymerization means, solvent exchange means, solvent recovery means and styrene polymerization means.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.