Ambient Self-Crosslinkable Latex
First Claim
1. An aqueous composition comprising latex particles comprising a film forming monomer, a C4-C18 ethylenically unsaturated monomer moiety containing a ketone and a C3-C18 ethylenically unsaturated monomer moiety containing a primary amide, wherein the ketone is substantially unreactive to the primary amide when the latex particles are in water and wherein the ketone reacts with the primary amide and latex particles crosslink when water is at least partially removed from the latex under ambient conditions.
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Abstract
The present invention relates to storage stable film forming latex particles substantially free of adipic acid dihydrazide (ADH) that crosslink under ambient conditions during or after drying. Monomers for the formation of the crosslinkable moieties in the latex particles include diacetone acrylamide (DAAM) or the likes and methacrylamide (MAM) or the likes with or without styrene. A paint composition comprising the storage stable latex particles was described.
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Citations
20 Claims
- 1. An aqueous composition comprising latex particles comprising a film forming monomer, a C4-C18 ethylenically unsaturated monomer moiety containing a ketone and a C3-C18 ethylenically unsaturated monomer moiety containing a primary amide, wherein the ketone is substantially unreactive to the primary amide when the latex particles are in water and wherein the ketone reacts with the primary amide and latex particles crosslink when water is at least partially removed from the latex under ambient conditions.
- 4. An aqueous composition comprising film forming latex particles having crosslinking moieties, wherein the crosslinking moieties comprise a diacetone acrylamide moiety and a methacrylamide moiety, wherein the latex particles cross-link when applied to a substrate at ambient conditions.
- 19. An aqueous composition comprising core shell latex particles having a shell polymer comprising diacetone acrylamide and methacrylamide moieties, wherein the latex particles crosslink when applied to a substrate at ambient conditions.
Specification