Voc free latex coalescent systems

C - Chemistry – Metallurgy – 08 – F

Patent

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Details

C08F 265/06 (2006.01) C08F 265/04 (2006.01)

Patent

CA 2521256

Combinations of essentially nonvolatile, unsaturated ethers and / or esters, and small proportions of low glass transition temperature (Tg) latex reins, as replacements for volatile organic compounds (VOCs) as coalescents and optionally reactive amines (as replacements for conventionally employed volatile amines / ammonia neutralizers, respectively), provides economical, low / no VOC-containing acrylic, styrenic copolymer, polyester, polyurethane and vinyl copolymer latex based coatings, paints, and inks; which outperform their conventional counterparts.

L'invention concerne des combinaisons d'éthers et/ou d'esters insaturés, essentiellement non volatils, et de faibles proportions de résines de latex présentant une faible température de transition vitreuse (Tg), servant d'alternative de composés organiques volatils en tant qu'amines coalescentes éventuellement réactives (respectivement en tant qu'alternative d'amines volatiles habituelles/neutraliseurs d'ammoniac). Lesdites combinaisons constituent des revêtements, des peintures et des encres économiques, ayant une teneur faible/nulle en composés organiques volatils, à base de latex de copolymères styréniques, de polyesters, de polyuréthanes et de copolymères vinyliques, et présentant des performances améliorées par rapport à leurs homologues habituels.

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