Method for producing ethylene polymers

Details Method for producing ethylene polymers Method for producing ethylene polymers

1975-04-29

1976-10-19

Smith, Edward J.

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

252429B, 252429C, 526114, 526115, 526121, 526122, 526124, 526125, 526347, 526348, 526350, 526352, 526906, C08F 402, C08F 1002

Patent

active

039872335

ABSTRACT:
In a method for producing a polymer or a copolymer of ethylene carried out in the presence of a catalyst obtained by a combination of a solid product containing a transition metal of the fourth a or fifth a group and an organoaluminum compound, an improvement has been made to provide a catalyst having such an efficiency as being capable of omitting ash-removal step and providing a high production yield of polymer per unit volume of polymerization vessel per hour and a polymer having a high B.D. Said catalyst can be obtained by (1) reacting a halide of trivalent metal (A) with a divalent metal compound or its derivative (B) such as hydroxide, oxide or carbonate thereof, or hydrate of these, to produce a solid product (I); (2) reacting said solid product (I) with a chain or cyclic polysiloxane having a general formula of ##EQU1## WHEREIN R.sub.1 and R.sub.2 are same or different kinds, and each mean hydrogen atom, alkyl, aryl, halogen atom, alkoxy, aryloxy radical or a residual radical of an aliphatic carboxylic acid and n is a number in the range of 3-10,000 to produce a solid product (II), and (3) further reacting said solid product (II) with a liquid transition metal compound (D) to produce a solid product (III).

REFERENCES:
patent: 3718636 (1973-02-01), Stevens et al.
patent: 3900454 (1975-08-01), Sato et al.
patent: 3907759 (1975-09-01), Okada et al.

Affiliated with

Also associated with

Rating

Method for producing ethylene polymers does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method for producing ethylene polymers, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for producing ethylene polymers will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-103377