Heat sensitizable latex

Details Heat sensitizable latex Heat sensitizable latex

1997-03-05

1998-07-14

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...

524827, C08L 3504

Patent

active

057805440

ABSTRACT:
This invention discloses heat sensitizable latices and a process for synthesizing heat sensitizable latices. This invention more specifically discloses a process for preparing a heat sensitizable latex which comprises the steps of (1) polymerizing at least one conjugated diolefin monomer in an aqueous polymerization medium by free radical polymerization in the presence of an emulsifier system which is comprised of a fatty ethoxylated monomaleate and optionally an alkyl monomaleate to produce a first latex composition; and (2) adding a water soluble organically modified polysiloxane to the first latex composition to produce the heat sensitizable latex. The present invention further discloses a heat sensitizable latex composition which is comprised of (1) at least one rubbery polymer; (2) water; (3) an emulsifier system which is comprised of a fatty ethoxylated monomaleate and optionally an alkyl monomaleate; and (4) at least one water-soluble organically modified polysiloxane.

REFERENCES:
patent: 4202809 (1980-05-01), Eash
NR Technology, vol. 11, No. 1, 1980, Gorton et al Developments in the Heat-Sensitization of Natural Rubber Latex Mixes.
A.D.T. Gorton and T.D. Pendle, NR Technology Vol. 11, Part 1, pp 1-8, 1980.

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