Process for producing copolymer latex and paper coating composit

Details Process for producing copolymer latex and paper coating composit Process for producing copolymer latex and paper coating composit

1993-03-19

1995-08-22

Mulcahy, Peter D.

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

Synthetic resins

At least one aryl ring which is part of a fused or bridged...

524832, 524833, 524834, C08L 3100

Patent

active

054441188

ABSTRACT:
A two-stage process for producing a copolymer, comprising emulsion polymerizing (a) a 2-80% by weight of a conjugated diene compound, (b) 0.1-10% by weight of an ethylenically unsaturated carboxylic acid, and (c) 10-97.9% by weight of an ethylenically unsaturated compound other than the components (a) and (b) in the presence of (d) and .alpha.-methylstyrene dimer, wherein in the first stage, 10-50% by weight of the total amount of the components (a), (b) and (c) are added and polymerized at 70.degree.-80.degree. C. for 2-6 hours after the addition of the monomer, and after said first stage, 50-90% by weight of the total amount of the components (a), (b) and (c) are continuously fed and polymerized in a second stage.

REFERENCES:
patent: 3256234 (1966-06-01), Miller
patent: 4445959 (1984-05-01), Hombach et al.
Database Chemical Abstracts, (Host:STN), abstract No. 77 (26) 165135a, Columbus, Ohio, U.S.; & Hem. Ind. 26 (8), 309-13 (V. Jarm et al).

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