Process for the production of bead polymers

Details Process for the production of bead polymers Process for the production of bead polymers

Filed on

1978-04-25

Date issued

1980-11-11

Examiner

Lieberman, Paul

Patent Class

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

SubClass

Synthetic resins

SubSubClass

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

Other Related Categories

525455, 525920, C08L 7500

Type

Patent

Status

active

Patent number

042334241

Description

ABSTRACT:
A two-phase bead polymer having an average bead diameter of 10 to 120.mu., and comprising (A) 88 to 99.5% by weight of a polymer of polymerized units of at least one methacrylic acid ester containing from 1 to 10 carbon atoms in the aliphatic, saturated alcohol component, the methacrylic ester polymer, optionally, containing up to 30% by weight of copolymerized units of at least one monomer selected from acrylic acid esters containing from 1 to 10 carbon atoms in the aliphatic saturated alcohol component, hydroxyalkyl esters of methacrylic acid containing from 2 to 4 carbon atoms in the alkyl group, styrene, vinyl acetate, (meth)acrylamide, (meth)acrylic acid and/or itaconic acid, and (B) 0.5 to 12% by weight of a polyurethane.

REFERENCES:
patent: 3509234 (1970-04-01), Burlant
patent: 3641199 (1972-02-01), Niederhauser
patent: 3677920 (1972-07-01), Kai
patent: 3700752 (1972-10-01), Hutchinson
patent: 3868431 (1975-02-01), Hutchinson
patent: 3876726 (1975-04-01), Ford
patent: 3907751 (1975-09-01), Knight
patent: 3962370 (1976-06-01), Hutchinson
patent: 3968089 (1976-07-01), Cuscurida
patent: 4073828 (1978-02-01), Ferrarini
patent: 4089763 (1978-05-01), Dart
patent: 4110184 (1978-08-01), Dart
patent: 4112017 (1978-09-01), Howard
patent: 4133723 (1979-01-01), Howard
patent: 4134930 (1979-01-01), Kubota
patent: 4134935 (1979-01-01), Quiring

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