Preparation of large particle size monodisperse latexes

Details Preparation of large particle size monodisperse latexes Preparation of large particle size monodisperse latexes

1988-08-19

1992-04-21

Schofer, Joseph L.

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...

524157, 524166, 524460, 526201, 526203, C08F 216

Patent

active

051069032

ABSTRACT:
Monodisperse latexes of at least 2-30 microns particle size are prepared from an emulsion recipe comprising a monodisperse seed latex polymer on the order of 2 microns or less particle size, a polymerizable monomer, an initiator, at least one inhibitor, and a water-soluble polymeric emulsifier of 10.sup.4 -10.sup.7 molecular weight. Optional ingredients are crosslinking monomer, oil-soluble inhibitor if the mixture is to be stored before polymerization, and one or more additional emulsifiers selected from a water-soluble comonomer or polymer of 0.3.times.10.sup.3 -5.times.10.sup.3 molecular weight and a non-polymeric anionic emulsifier. Additional particle size growth and monodisperse latex yield are realized by polymerization in a microgravity environment.

REFERENCES:
patent: 3424706 (1969-01-01), Smith et al.
patent: 3594336 (1971-07-01), Bergmeister et al.
patent: 4046730 (1977-09-01), Tortai
patent: 4247434 (1981-01-01), Vanderhoff et al.
patent: 4459378 (1984-07-01), Ugelstad

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