C - Chemistry – Metallurgy – 09 – D
Patent
C - Chemistry, Metallurgy
09
D
C09D 201/02 (2006.01) B05D 5/06 (2006.01) C08K 5/00 (2006.01) C09D 133/06 (2006.01) C09D 201/00 (2006.01) E01F 9/04 (2006.01) C08L 33/14 (2006.01)
Patent
CA 2215464
The present invention relates to the preparation of water based coating compositions having extended storage stability. The composition includes separately stored polymeric binder component and a crosslinking component. These components are mixed prior to application over surfaces, such as, road surfaces. The polymeric binder component includes an anionically stabilized binder polymer having at least one reactive functional pendent moiety, or a blend of the binder polymer with a polyfunctional amine. The pot mix of the coating composition has extended storage stability. The waterborne road marking paints of the present invention exhibit improved wear resistance on road surfaces in terms of paint remaining on the road longer than waterborne road marking paints based on the storage stable component alone. The present invention provides road marking paints that can be applied by conventional road striping equipment and do not require special two component spray equipment.
Préparation de compositions aqueuses de revêtement restant stables plus longtemps. La composition comprend un liant polymérique, conservé séparément, et un agent de réticulation. Ces constituants sont mélangés avant leur application sur des surfaces, comme les routes. Le liant polymérique est à base d'un liant polymérique à stabilisation anionique, possédant au moins une fraction fonctionnelle réactive en ramification, ou d'un mélange de polymère liant avec une amine polyfonctionnelle. Le mélange en pot de la composition reste stable plus longtemps. Les peintures aqueuses pour marquage routier de l'invention résistent mieux à l'usure sur les surfaces routières, autrement dit elles durent plus longtemps que les peintures aqueuses de marquage routier à base du seul constituant stable au stockage. L'invention présente des peintures de marquage routier pouvant être appliquées à l'aide de matériel de marquage classique, ne nécessitant pas d'équipement spécial pour la pulvérisation de produits à deux constituants.
Brown Ward Thomas
Hermes Ann Robertson
Landy Francis Joseph
Schall Donald Craig
Gowling Lafleur Henderson Llp
Rohm And Haas Company
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