Styrene-based/polymercaptan polymer and process for production t

Details Styrene-based/polymercaptan polymer and process for production t Styrene-based/polymercaptan polymer and process for production t

1988-08-29

1990-04-17

Anderson, Harold D.

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

Synthetic resins

From sulfur-containing reactant

528322, 528362, 528364, 528392, C08G 7504

Patent

active

049181599

ABSTRACT:
Novel styrene-based polymers and a process for efficient production thereof are disclosed. The styrene-based polymers have a branching nucleus represented by the general formula: R(S).sub.k or R(A-S).sub.k (wherein all the symbols are as defined in the appended claims), and have a sulfur content of 6 to 550 ppm, a weight average molecular weight of 450,000 to 1,300,000, and a weight average molecular weight
umber average molecular weight (Mw/Mn) ratio of 2:1 to 15:1. The styrene-based polymers are greatly improved in impact resistance while maintaining sufficiently high fluidity and moldability and thus when injection or extrusion molded, can provide moldings having an excellent mechanical strength.

REFERENCES:
patent: 3832421 (1974-08-01), Morgan
patent: 3983057 (1976-09-01), Illmann et al.
patent: 4740573 (1988-04-01), Eichenauer et al.

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