Process for production of polymer dispersions containing an...

Details Process for production of polymer dispersions containing an... Process for production of polymer dispersions containing an...

2011-08-16

2011-08-16

Cheung, William K (Department: 1762)

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Polymers from only ethylenic monomers or processes of...

C526S233000, C526S236000, C526S318000, C526S279000, C526S303100, C526S287000, C526S317100

Reexamination Certificate

active

07999050

ABSTRACT:
A method of making a composition comprising reacting, in a reactor, a non-halogenated acetoacetate group containing monomer, at least one additional monomer, and a base, wherein at least a portion of the base is fed to the reactor during reaction. Also, a composition comprising an aqueous polymer dispersion that is a product of a method comprising reacting a non-halogenated acetoacetate moiety containing monomer, at least one additional monomer, and a base, wherein the base is fed to the reaction during reaction, wherein the composition has a lower viscosity than a second composition, wherein the second composition is prepared from the same materials as the composition, and the second composition is made by a method wherein the base is added to the second composition after a reaction to form the second composition.

REFERENCES:
patent: 5534310 (1996-07-01), Rokowski et al.

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