Polyalkene-substituted carboxylic acid compositions having reduced chlorine content
US6562904B2 · kind B2 · utility
6Cited by
12References
22Claims
0Family size
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Key dates
| Filing date | Jun 25, 2001 |
| Grant date | May 13, 2003 |
| Priority date | — |
| Expiry date | Jul 21, 2021 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08F8/26
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The residual chlorine content of a polyolefin-substituted carboxylic acylating agent formed by a chlorine-assisted reaction of a polyolefin and an &agr;,&bgr;-unsaturated carboxylic reactant can be reduced by heating the polyolefin-substituted carboxylic acylating agent having a residual chlorine content in the presence of an &agr;,&bgr;-unsaturated carboxylic reactant, optionally in the further presence of a sulfonic acid. Residual chlorine content can be further reduced by using, in the reaction of the polyolefin &agr;,&bgr;-unsaturated carboxylic reactant, a high speed mixer provided with a dual pitch blade.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.