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...
Patent
1981-10-29
1983-04-26
Michl, Paul R.
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...
524534, 525301, 525902, 428511, C08F27902
Patent
active
043813658
ABSTRACT:
A process for preparing a copolymer latex by polymerization of at least one aliphatic conjugated diene monomer, at least one ethylenically unsaturated carboxylic acid monomer and at least one monoolefinic monomer copolymerizable with them in a weight proportion of 19.5-80:0.5-10:10-80, characterized in that (a) a mixture of the whole amount of the aliphatic conjugated diene monomer, the whole amount of the ethylenically unsaturated carboxylic acid monomer and a portion of the monoolefinic monomer, the combined amount of them being from 45 to 99% by weight on the basis of the total amount of the starting monomers, is subjected to emulsion polymerization, and (b) after or while the remainder of the monoolefinic monomer in an amount of from 1 to 55% by weight on the basis of the total amount of the starting monomers is added to the reaction mixture, the further emulsion polymerization is carried out.
REFERENCES:
patent: 2859201 (1958-11-01), Uraneck
patent: 3471591 (1969-10-01), Lindsey
patent: 3793244 (1974-02-01), Megee
patent: 3793402 (1974-02-01), Owens
patent: 4134872 (1979-01-01), Lee
patent: 4264678 (1981-04-01), Nelsen
patent: 4265977 (1981-05-01), Kawamura
Hyoda Junkoh
Mishiba Saburo
Uchida Akira
Usami Hisao
Watanabe Akira
Michl Paul R.
Rosen Lawrence
Sumitomo Naugatuck Co. Ltd.
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