Thixotropic paint compositions containing hydrophobic starch der

Details Thixotropic paint compositions containing hydrophobic starch der Thixotropic paint compositions containing hydrophobic starch der

1998-09-16

1999-12-14

Nutter, Nathan M.

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...

524734, 536 48, 536 49, C08K 507, C08L 300

Patent

active

060019271

ABSTRACT:
Latex paint compositions containing water, pigment and a latex wherein the latex is prepared by emulsion polymerization of at least one ethylenically unsaturated monomer in the presence of 0.1 to 0.2 pphm of at least one hydrophobically modified starch having the structure ##STR1## In the above structure, St is a starch base material, R.sup.1 is a dimethylene or trimethylene group, R.sup.2 is selected from the group consisting of alkyl, alkenyl, aralkyl and aralkenyl groups having 2 to 20 carbon atoms, and Y is selected from the group consisting of hydrogen, alkali metal, alkaline earth metal and ammonium. The hydrophobically modified starch is the reaction product of starch and an anhydride moiety and provides the latex paint with improved rheological properties and allows for easier spreading and less dripping of paint.

REFERENCES:
patent: 2661349 (1953-12-01), Caldwell et al.
patent: 4322322 (1982-03-01), Lambrechts et al.
patent: 4845152 (1989-07-01), Palmer
patent: 5672699 (1997-09-01), Billmers et al.

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