Simultaneously chlorinating and grafting a cure site onto polyethylene in an aqueous suspension
US4477633A · kind A · utility
2Cited by
6References
9Claims
0Family size
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Inventor
Key dates
| Filing date | Dec 15, 1983 |
| Grant date | Oct 16, 1984 |
| Priority date | — |
| Expiry date | Dec 15, 2003 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08F255/023
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A chlorinated polyethylene elastomer is made by mixing polyethylene with water to form an aqueous suspension of the polyethylene and simultaneously chlorinating and grafting a cure site on the polyethylene by mixing and heating the aqueous suspension containing a free radical initiator, gaseous chlorine and about 0.1-1.5 moles per kg of polyethylene of an alkyl or alkylaryl monester of butenedioic acid having the formulas ##STR1## or mixtures thereof, where R.sub.1 is an alkyl or alkylaryl group having from about 8-20 carbon atoms and R.sub.2 and R.sub.3 are hydrogen, chlorine or an alkyl group having from about 1-4 carbon atoms.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.