AN AQUEOUS POLYMER EMULSION AND AN AQUEOUS ADHESIVE COMPOSITION FORMED THEREFROM

• Main Authors: PAN, Yuanjia, QU, Zhaohui
• Format: Patent
• Language: English; French
• Published: 15.06.2017
• Subjects: ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; ADHESIVES; CHEMISTRY; COMPOSITIONS BASED THEREON; DYES; MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED BONDS; METALLURGY; MISCELLANEOUS APPLICATIONS OF MATERIALS; MISCELLANEOUS COMPOSITIONS; NATURAL RESINS; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ORGANIC MACROMOLECULAR COMPOUNDS; PAINTS; POLISHES; THEIR PREPARATION OR CHEMICAL WORKING-UP; USE OF MATERIALS AS ADHESIVES

An aqueous polymer emulsion comprising: i) as polymerized units, from 20％ to 80％ by dry weight, based on total dry weight of the polymer, of vinyl acetate; ii) as polymerized units, from 20％ to 80％ by dry weight, based on total dry weight of the polymer, of an α, β-ethylenically unsaturated carboxylic ester monomer; iii) as polymerized units, from 0.1％ to 5％ by dry weight, based on total dry weight of the polymer, of a stabilizer monomer; iv) from 0.05％ to 1％ by dry weight, based on total dry weight of the polymer, of a surfactant, wherein said aqueous polymer emulsion has a viscosity of less than 100cps. An aqueous adhesive composition comprising said aqueous polymer emulsion. La présente invention concerne une émulsion aqueuse de polymère qui comporte : i) comme motifs polymérisés, de 20 % à 80 % en poids sec, sur la base du poids sec total du polymère, d'acétate de vinyle ; ii) comme motifs polymérisés, de 20 % à 80 % en poids sec, sur la base du poids sec total du polymère, d'un monomère d'ester carboxylique α,β-éthylénique insaturé ; iii) comme motifs polymérisés, de 0,1 % à 5 % en poids sec, sur la base du poids sec total du polymère, d'un monomère stabilisant ; iv) de 0,05 % à 1 % en poids sec, sur la base du poids sec total du polymère, d'un tensioactif, ladite émulsion aqueuse de polymère présentant une viscosité inférieure à 100 cps. Une composition adhésive aqueuse comportant ladite émulsion aqueuse de polymère.