Olefin polymerisation process in the presence of an...

Details Olefin polymerisation process in the presence of an... Olefin polymerisation process in the presence of an...

2007-10-16

2007-10-16

Teskin, Fred (Department: 1713)

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Polymers from only ethylenic monomers or processes of...

C526S064000, C526S351000

Reexamination Certificate

active

11503345

ABSTRACT:
A propylene polymerisation process carried out in the presence of an anti-fouling agent; characterised in that the anti-fouling agent comprises an anti-fouling polymer containing:(1) one or more blocks —(CH2—CH2—O)k— where each k is in the range from 1 to 50; and(2) one or more blocks —(CH2—CH(R)—O)n— where R comprises an alkyl group having from 1 to 6 carbon atoms and each n is in the range from 1 to 50;and terminated by a R′ and a R″ end groups wherein R′ is OH or an alkoxy having from 1 to 6 carbon atoms and R″ is H or an alkyl having from 1 to 6 carbon atoms, and the anti-fouling polymer is solvated in a solvent comprising cyclohexane when added to the polymerisation medium.

REFERENCES:
patent: 5929179 (1999-07-01), Strobbe et al.
patent: 6916892 (2005-07-01), Tharappel et al.
patent: 1316566 (2003-04-01), None

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