Polysiloxane polyols

C - Chemistry – Metallurgy – 08 – G

Patent

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Details

C08G 77/38 (2006.01) C08G 18/42 (2006.01) C08G 18/46 (2006.01) C08G 18/61 (2006.01)

Patent

CA 2298635

Polysiloxane polyols and curable coating compositions containing such polysiloxane polyols are disclosed. When present as a component in both ambient-cure and thermal-cure coating compositions the polysiloxane polyols provide improved adhesion, pot-life, tack-times, mar resistance, excellent appearance, film hardness and corrosion resistance. A method for preparing such polysiloxane polyols is also disclosed.

L'invention concerne des polyols de polysiloxane et des compositions de revêtement durcissables contenant ces polyols de polysiloxane. Lorsqu'ils sont présents comme composant dans des compositions de revêtement à durcissement en milieu ambiant et à durcissement thermique, les polyols de polysiloxane présentent des propriétés améliorées d'adhérence, de durée de vie en pot, de temps d'adhésivité, de résistance au rayage, d'excellence d'aspect, de dureté de film et de résistance à la corrosion. L'invention concerne également un procédé de préparation de ces polyols de polysiloxane.

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