Tapered block copolymers of conjugated dienes and monovinylarene

Details Tapered block copolymers of conjugated dienes and monovinylarene Tapered block copolymers of conjugated dienes and monovinylarene

1991-05-08

1993-10-26

Seidleck, James J.

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

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

525250, 525271, C08F29704

Patent

active

052567362

ABSTRACT:
A method for preparing tapered block copolymers in a polymerization process by sequentially charging: (1) an initiator and monovinylaromatic monomers in the presence of a randomizer; (2) an initiator and a mixture of monovinylaromatic and conjugated diene monomers; (3) an initiator and a mixture of monovinylaromatic and conjugated diene monomers; and (4) a coupling agent to produce a polymodal tapered block copolymer. The copolymers are particularly useful for packaging applications which require good environmental stress crack resistance.

REFERENCES:
patent: 3639517 (1972-02-01), Kitchen et al.
patent: 4086298 (1978-04-01), Fahrbach et al.
patent: 4089913 (1978-05-01), Miki et al.
patent: 4180530 (1979-12-01), Bi et al.
patent: 4248981 (1981-02-01), Milkovich et al.
patent: 4248984 (1981-02-01), Bi et al.
patent: 4390663 (1983-06-01), Nicholson
patent: 4704434 (1987-11-01), Kitchen et al.
patent: 5130377 (1992-07-01), Trepka et al.

Affiliated with

Also associated with

Rating

Tapered block copolymers of conjugated dienes and monovinylarene does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Tapered block copolymers of conjugated dienes and monovinylarene, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Tapered block copolymers of conjugated dienes and monovinylarene will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-960117