Copolymeric latexes made water-redispersible by presence of six-membered carbocyclic compound having two vicinal carboxyl substituents
Abstract
Abstract LATEX COMPOSITIONS, WHICH AFTER BEING DRIED ARE REDISPERSIBLE IN WATER, COMPRISE AQUEOUS DISPERSIONS OF FILMFORMING CARBOXYL-CONTAINING POLYMERS AND A SIX-MEMBERED CARBOXYLIC COMPOUND HAVING TWO VICINAL CARBOXYL SUBSTITUENTS AND WHICH IS SOLUBLE IN AQUEOUS ALKALINE MEDIA. THE DRIED COMPOSITIONS AFTER BEING REDISPERSED IN WATER PROVIDE RECONSTITUTED LATEXES WHICH HAVE APPROXIMATELY THE SAME PARTICLE SIZE AS THE ORIGINAL LATEX. REPRESENTATIVE COMPOSITIONS ARE BLEND OF THE DISODIUM SALT OF 1,2,3,6-TETRAHYDROPHTHALIC ACID AND A LATEX OF A COPOLYMER OF STYRENE, BUTADIENE AND ACRYLIC ACID AS WELL AS DRIED FILMS OR DRIED POWDERS OBTAINED THEREFROM. THE COMPOSITIONS ARE OBTAINED BY MIXING THE CARBOCYLIC COMPOUND WITH THE LATEX CONSTITUENTS EITHER BEFORE, DURING OR AFTER PREPARATION OF THE LATEX OR ARE OBTAINEED BY IN SITU FORMATION OF THE CARBOCYCLIC COMPOUND DURING EMULSION POLYMERIZATION.
Inventors
- 👤 A Nelson
Bibliographic Details
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