Process for producing aqueous resin dispersion

Details Process for producing aqueous resin dispersion Process for producing aqueous resin dispersion

1990-08-09

1993-01-12

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...

524745, 526214, 526222, 526225, C08J 501

Patent

active

051791587

ABSTRACT:
A process for producing an aqueous resin dispersion is disclosed, which comprises dissolving a macromonomer having a radical polymerizable group at the terminal thereof and an oil-soluble radical polymerization initiator in a hydrophobic vinyl monomer copolymerizable with the macromonomer to form a solution, emulsifying the solution in an aqueous medium in the presence of an emulsifying agent selected from (A) an alkali sulfosuccinate anionic surfactant and (B) a surfactant comprising from 2 to 98% by weight of (i) an alkali sulfonate anionic surfactant other than (A) or (ii) an alkali sulfuric ester anionic surfactant, and from 98 to 2% by weight of a nonionic surfactant having an HLB value of 10 or more, and copolymerizing the macromonomer and the vinyl monomer at an elevated temperature. The aqueous resin dispersion has a high content of a graft polymer with a reduced content of unreacted macromonomer.

REFERENCES:
patent: 3329640 (1967-07-01), Scotti et al.
patent: 3759859 (1973-09-01), Steinwand
patent: 3842059 (1974-10-01), Milkovich et al.
patent: 3862077 (1975-01-01), Schulz et al.
patent: 4299975 (1981-11-01), Asbeck et al.
J. P. Kennedy et al., "Macromers by Carbocationic Polymerization", Polymer Bulletin 13, pp. 441-446, 1985.

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