Process for the preparation of tapered copolymers via in situ di

Details Process for the preparation of tapered copolymers via in situ di Process for the preparation of tapered copolymers via in situ di

1994-12-09

1997-03-25

Mulcahy, Peter D.

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

Synthetic resins

At least one aryl ring which is part of a fused or bridged...

524461, 525 89, 525250, 525271, 525314, 525315, 525316, 526201, C08K 302

Patent

active

056145799

ABSTRACT:
A process is provided for the preparation of tapered copolymers by the nonaqueous dispersion polymerization of a mixture of 30 to 70% by weight of a conjugated diolefin monomer, preferably butadiene, and 30 to 70% by weight of a vinyl substituted aromatic monomer, preferably styrene, in a liquid hydrocarbon dispersion medium with an anionic initiator catalyst system in the presence of a block copolymeric dispersing agent. At least one block of the dispersing agent is prepared prior to the dispersion polymerization reaction and at least one block of the dispersing agent is prepared in situ during the dispersion copolymerization. The block of the dispersing agent that is prepared in situ has the polymer structure of the tapered copolymer.

REFERENCES:
patent: 4098980 (1978-07-01), Markle et al.
patent: 4452960 (1984-06-01), Throckmorton
patent: 4829135 (1989-05-01), Gunesin et al.
patent: 4871814 (1989-10-01), Gunesin et al.
patent: 5234999 (1993-08-01), Tung et al.
patent: 5241008 (1993-08-01), Hall
patent: 5272207 (1993-12-01), Hall et al.
patent: 5331035 (1994-07-01), Hall

Affiliated with

Also associated with

Rating

Process for the preparation of tapered copolymers via in situ di 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 tapered copolymers via in situ di, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for the preparation of tapered copolymers via in situ di will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2204077