Method for polymerizing a methyl methacrylate molding compositio

Details Method for polymerizing a methyl methacrylate molding compositio Method for polymerizing a methyl methacrylate molding compositio

1987-09-02

1989-05-23

Ivy, C. Warren

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

Synthetic resins

Polymerizing in tubular or loop reactor

526 78, 526208, 526216, 5262323, 526272, C08F 200

Patent

active

048332216

ABSTRACT:
A two step method for making a thermoplastic molding composition predominantly comprising methyl methacrylate by polymerizing monomers in a first stage, in the presence or absence of a solvent, to 50 percent conversion, further polymerizing at 75.degree. C. to 150.degree. C. in a second stage in the presence of a nonpolymerizable organic solvent to a conversion of at least 80 percent, and then evaporating volatile constituents.

REFERENCES:
patent: 3252950 (1966-05-01), Terenzi et al.
patent: 3336267 (1967-08-01), Zimmerman et al.
Chemical Abstracts, vol. 102 (1985) 150317.

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