Process for the preparation of chlorinated polyolefin and chloro

Details Process for the preparation of chlorinated polyolefin and chloro Process for the preparation of chlorinated polyolefin and chloro

1994-09-26

1995-09-12

Lone, Werren B.

Organic compounds -- part of the class 532-570 series

Organic compounds

Halogen containing

5253338, 570216, 570234, C07C 1702, C07C 2100

Patent

active

054498333

ABSTRACT:
A novel process for the preparation of a chlorinated polyolefin having excellent low temperature characteristics and brightness is provided which comprises allowing a polyolefin dissolved or suspended in a solvent to undergo chlorination reaction with chlorine gas or chlorinated sulfuryl in the presence of a radical initiator as a catalyst, characterized in that as said solvent there is used 1,1,2-trichloroethane and the temperature is controlled to 90.degree. C. or lower at the process for removing hydrogen chloride and/or sulfur dioxide by-produced during the reaction from the reaction system. A further process for the preparation of a chlorosulfonated polyolefin having excellent low temperature characteristics and brightness is provided which comprises allowing a polyolefin dissolved or suspended in a solvent to undergo chlorosulfonation reaction with chlorine and sulfur dioxide, chlorine and sulfuryl chloride, sulfuryl chloride alone, chlorine, sulfur dioxide and sulfuryl chloride or sulfuryl chloride and sulfur dioxide in the presence of a radical initiator as a catalyst, characterized in that as said solvent there is used 1,1,2-trichloroethane and the temperature is controlled to 90.degree. C. or lower at the process for removing hydrogen chloride and/or sulfur dioxide by-produced during the reaction from the reaction system.

REFERENCES:
patent: 4049729 (1977-09-01), Otto et al.
patent: 4634778 (1987-01-01), Mignani et al.
patent: 5077443 (1991-12-01), Harris

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