Aqueous sulfopolyurea colloidal dispersions

C - Chemistry – Metallurgy – 08 – G

Patent

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Details

C08G 18/10 (2006.01) C08G 18/08 (2006.01) C08G 18/46 (2006.01)

Patent

CA 2296380

The present invention relates to stable aqueous colloidal dispersions of sulfopolyureas and self-supporting films formed from the dispersions which display good mechanical properties from about room temperature to temperatures exceeding 150 ~C. The films of the invention, which are formed with no volatile organic compound (VOC) emissions and no post-coating chemical or ionic cross-linking, are not redispersible in water and may be used to form heat resistant abrasive articles.

La présente invention a trait à des dispersions colloïdales aqueuses stables de sulfopolyurées et à des films autoportants formés à partir des dispersions, qui présentent de bonnes propriétés mécaniques à des températures comprises environ entre une température ambiante et des températures supérieures à 150 ·C. Les films de l'invention, qui sont formés sans émissions de composés organiques volatils (VOC), et sans réticulation chimique ou ionique après revêtement, ne sont pas redispersables dans l'eau et peuvent être utilisés pour former des articles abrasifs résistant à la chaleur.

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