Process for the production of speck-free rubber latices...

C - Chemistry – Metallurgy – 08 – F

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400/9142

C08F 2/26 (2006.01) C08F 2/22 (2006.01) C08F 212/02 (2006.01) C08F 236/04 (2006.01) C08K 5/37 (2006.01) C08L 13/02 (2006.01)

Patent

CA 1137672

ABSTRACT OF THE DISCLOSURE A process for the production of substantially speck-free carboxylated rubber latices of high surface tension by polymerising a monomer mixture of .alpha.,.beta.-monoethylenically unsaturated mono- or di-carboxylic acids and a mixture of acyclic conjugated dienes and aryl vinyl monomers and/or (meth)acrylonitrile, in the aqueous phase in the presence of water-soluble emulsi- fiers, peroxodisulphate as initiator and mercaptocarboxylic acid corresponding to the formula: HS-(CH2)X-CO2H in which x is an integer of from 1 to 5, and/or water-soluble salts thereof. Le A 18 848

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