Process for the preparation of random copolymers

Details Process for the preparation of random copolymers Process for the preparation of random copolymers

C - Chemistry, Metallurgy

08

F

402/613

C08F 2/34 (2006.01) C08F 210/06 (2006.01)

Patent

CA 2028877

A process for the copolymerization of a mixture of monomers comprising propylene and 1-hexene which comprises contacting the monomers and, optionally, hydrogen in the gas phase in a single stage reaction zone, under polymerization conditions, with a catalyst system comprising (i) a solid catalyst precursor, which includes magnesium; titanium; a halogen which is chlorine, bromine, or iodine, or a mixture thereof; and a polycarboxylic acid ester containing two coplanar ester groups attached to adjacent carbon atoms; (ii) a hydrocarbyl aluminum cocatalyst; and (iii) a silicon compound containing at least one silicon-oxygen-carbon group, at a temperature of from about 50°C to about 90°C, wherein: (a) the atomic ratio of aluminum to titanium is in the range of about 10 to about 300; (b) the molar ratio of aluminum to silicon compound is in the range of about 0.5 to about 10; (c) the propylene partial pressure is in the range of about 50 to about 400 psi; (d) the 1-hexene partial pressure is in the range of about 1 to about 15 psi; (e) if hydrogen is present, the hydrogen partial pressure is in the range of up to about 80 psi; (f) the superficial gas velocity is in the range of about 1 to about 3 feet per second; and - 26 - (g) the molar ratio of 1-hexene to propylene is in the range of about 0.01:1 to about 0.08:1.

Affiliated with

Also associated with

Rating

Process for the preparation of random copolymers does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Process for the preparation of random copolymers, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for the preparation of random copolymers will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFCA-PAI-O-1456071