Procedure for manufacturing transparent, impact-resistant styren

Details Procedure for manufacturing transparent, impact-resistant styren Procedure for manufacturing transparent, impact-resistant styren

1991-04-29

1993-08-10

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...

525271, 525250, C08F29704

Patent

active

052349985

ABSTRACT:
A process for manufacturing block copolymers comprising anionically polymerizing a vinyl aromatic hydrocarbon mononer in solution in an aromatic hydrocarbon solvent capable of giving a homogeneous medium until attaining a homogeneous medium with a viscosity greater than 300 Pa.s at 20.degree. C. for a concentration of polymer in the aromatic hydrocarbon solvent between 60 and 90% by weight and then, after introduction of a conjugated diene, carrying out a copolymerization until a homogeneous medium is attained have a viscosity greater than 300 Pa.s at 90.degree. C. for a concentration of copolymer in the aromatic hydrocarbon solvent between 70 and 90% by weight, without the viscosity exceeding 3,000 Pa.s in either of the two polymerization steps.

REFERENCES:
patent: 3976607 (1976-08-01), Hokama et al.
patent: 4530967 (1985-07-01), Shiraki et al.
patent: 4539136 (1985-09-01), Broekhuis
patent: 4952627 (1990-08-01), Morita et al.

Affiliated with

Also associated with

Rating

Procedure for manufacturing transparent, impact-resistant styren does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Procedure for manufacturing transparent, impact-resistant styren, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Procedure for manufacturing transparent, impact-resistant styren will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1726010