Freeze-thaw stable high solids latexes of interpolymers of vinyl chloride,ethylene and certain carboxyl-containing monomers
Abstract
Abstract THIS INVENTION RELATES TO FREEZE-THAW STABLE LATEXES OF VINYL CHLORIDE INTERPOLYMERS WHOSE COMPOSITION BY WEIGHT INCLUDES BETWEEN ABOUT 6 AND 30% ETHYLENE AND BETWEEN ABOUT 0.5 AND 10% OF A COREACTIVE CARBOXYLATED MONOMER SELECTED FROM THE GROUP CONSISTING OF ACRYLIC ACID, METHACRYLIC ACID, CROTONIC ACID AND THE MONOESTERS OF MALEIC FUMARIC, ITACONIC AND ACONITIC ACIDS WITH ALCOHOLS HAVING FROM ONE TO TEN CARBON ATOMS. THE LATEXS HAVE PARTICULAR UTILITY AS ADHESIVE FOR THE DURABLE BONDING OF POLYMERIC FILMS SUCH AS POLYVINYL CHLORIDE TO ALUMINUM, IRON AND OTHER METALS, SUCH AS IN STRUCTURAL SLIDING. THE METHOD OF MAKING THE LATEXES COMPRISES MAINTAINING UNDER ETHYLENE PRESSURE AN AQUEOUS COMPOSITIONS CONTAINING A SEED LATEX AND A FREE-RADICAL INITATING SYSTEM AND HAVING A PH NOT GREATER THAN 5, AND GRADUALLY ADDING THERETO THE MONOMERS TO BE INTERPOLYMERIZED OVER A PERIOD OF AT LEAST SIX HOURS. THE METHOD CAN BE USED TO MAKE STABLE LATEXES CONTAINING AS HIGH AS ABOUT 55% SOLIDS.
Inventors
- 👤 P Cautilli
- 👤 J Dickstein
- 👤 S Makower
Bibliographic Details
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