Process for tailoring water-borne coating compositions

Details Process for tailoring water-borne coating compositions Process for tailoring water-borne coating compositions

C - Chemistry, Metallurgy

09

D

C09D 201/02 (2006.01) C09D 7/00 (2006.01) C09D 171/02 (2006.01)

Patent

CA 2730836

The present invention relates to a process for tailoring rheology of an aqueous or water-borne coating composition using a system comprising an amount of a first hydrophobically modified polymer comprising a polymer backbone modified with a first hydrophobe and an amount of a second hydrophobically modified polymer comprising the first hydrophobically modified polymer further modified with a second hydrophobe. By incorporating a system comprising at least two hydrophobically modified polymers into water-borne coatings where the amount of all of the hydrophobically modified polymers are able to be independently adjusted, the resultant coatings may be tailored to attain a desired combination of Stormer or Brookfield viscosity and ICI viscosity.

L'invention concerne un procédé qui permet d'adapter la rhéologie d'une composition de revêtement en phase aqueuse à l'aide d'un système renfermant une quantité d'un premier polymère hydrophobiquement modifié comprenant un squelette polymère modifié par un premier agent hydrophobe et une quantité d'un second polymère hydrophobiquement modifié renfermant le premier polymère hydrophobiquement modifié, encore modifié par un second agent hydrophobe. En incorporant à des revêtements en phase aqueuse un système comprenant au mois deux polymères hydrophobiquement modifiés dont les quantités peuvent être ajusées indépendamment, on parvient à adapter les revêtements afin d'obtenir une combinaison désirée de viscosité Stormer ou Brookfield ou de viscosité ICI.

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