CORE-SHELL GRAFT COPOLYMERS WITH IMPROVED SURFACE PROPERTIES

• Main Authors: LI DEJIN, LOWRY VERN
• Format: Patent
• Language: Chinese; English
• Published: 26.05.2020
• Subjects: APPARATUS THEREFOR; CHEMISTRY; COMPOSITIONS BASED THEREON; COMPOSITIONS OF MACROMOLECULAR COMPOUNDS; ELECTROFORMING; ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED BONDS; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTIONOF COATINGS; THEIR PREPARATION OR CHEMICAL WORKING-UP

Disclosed herein is a core-shell graft copolymer produced by coagulation of an aqueous latex comprising a quantity of particles of the copolymer and a quantity of a fatty acid surfactant, wherein thecoagulation involves the addition of a quantity of a multivalent metal salt, preferably a bivalent or trivalent metal salt. Such copolymer provides in an improvement of the surface properties of moulded articles produced from such copolymers, as demonstrated by a reduction of the content of gels in the surface layer. 本文公开了一种核-壳接枝共聚物，其通过使包含一定量的共聚物的颗粒和一定量的脂肪酸表面活性剂的水性胶乳凝结来产生，其中所述凝结包括添加一定量的多价金属盐、优选二价或三价金属盐。这种共聚物向由这种共聚物生产的模制品提供了表面性质的改进，如由表面层中凝胶含量的降低所展现的。