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US 11,028,282 B2Granted
Process for bonding hydrophobic surfaces having cationic guar-containing primer coating thereon
AssigneeRhodia Operations
InventorsMarie-Pierre Labeau, Marylise Mangeol
Life of this patent
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Abstract
The instant invention relates to primary coating compositions that comprises a cationic polysaccharide, to be applied on a hydrophobic surface before a subsequent application of a polar or water based coating composition, such a as a paint or an adhesive.
Claims6
A process for bonding two hydrophobic surfaces, the process comprising:
- (E1) contacting the two surfaces at least on certain zones with a primary coating composition consisting essentially of a cationic polysaccharide, wherein the cationic polysaccharide is a cationic guar, and wherein the composition is free of ionic surfactant, whereby a coating based on said cationic polysaccharide is obtained on said zones of the surfaces,
- (E2) injecting an aqueous composition, wherein the aqueous composition is an adhesive, between all or part of the zones of the surfaces covered by the cationic polysaccharide, as obtained in step (E1).
Dependencies are inferred from the claim text.