EMULSION POLYMERS AND LOW VOC COATING COMPOSITIONS MADE THEREFROM

• Main Authors: WU WENJUN, WALLACE KAREN L, STALLINGS JEANNE L
• Format: Patent
• Language: Chinese; English
• Published: 27.07.2021
• Subjects: ADHESIVES; CHEMICAL PAINT OR INK REMOVERS; CHEMISTRY; COATING COMPOSITIONS, e.g. PAINTS, VARNISHES ORLACQUERS; COMPOSITIONS BASED THEREON; CORRECTING FLUIDS; DYES; FILLING PASTES; INKS; MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED BONDS; METALLURGY; MISCELLANEOUS APPLICATIONS OF MATERIALS; MISCELLANEOUS COMPOSITIONS; NATURAL RESINS; ORGANIC MACROMOLECULAR COMPOUNDS; PAINTS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; POLISHES; THEIR PREPARATION OR CHEMICAL WORKING-UP; USE OF MATERIALS THEREFOR; WOODSTAINS

Emulsion polymers and coating compositions made therefrom that exhibit exceptional roller stability and stain resistance to both hydrophilic and hydrophobic stains, without sacrificing scrub resistance. The emulsion polymers include, as polymerized units formed at a pH between 3 and 9: a) at least one nonionic or anionic unsaturated monomer in an amount ranging between about 78 wt. % to less than 100 wt.% based on the overall weight of the polymer composition b) one or more strong acid monomer in an amount ranging from about 0.01 wt. % to 2 wt. % based on the overall weight of the polymer composition; and c) at least one lower alkyl acrylate monomer in an amount ranging between about 1 wt. % to 20 wt. % based on the overall weight of the polymer composition. 乳液聚合物及由其制备的涂料组合物，表现出格外的转辊稳定性以及对亲水性和疏水性污渍的抗污性，而不牺牲耐擦性。乳液聚合物包含在3-9之间的pH下形成的聚合单元：a)基于聚合物组合物总重，含量在约78重量％至小于100重量％之间的至少一种非离子型或阴离子型不饱和单体；b)基于聚合物组合物总重，含量为约0.01-2重量％的一种或多种强酸单体；以及c)基于聚合物组合物总重，含量在约1-20重量％之间的至少一种丙烯酸低级烷基酯单体。