Polyhydroxy-diamines as multi-functional additives for paints, coatings and epoxies
View Patent ↗Provided are polyhydroxy-diamine compounds of the formula I: or salt thereof, wherein R 1 , R 2 , and R 3 are as defined herein. The compounds are useful as low additives for paints, coatings and epoxy formulations.
1. An aqueous based paint or coating comprising a binder, a carrier, a pigment, and a compound of formula I:
or salt thereof, wherein R 1 and R 2 are independently at each occurrence H, CH 2 OH, C 1 -C 6 alkyl; and R 3 is independently at each occurrence H or C 1 -C 6 alkyl.
2. An aqueous based paint or coating according to claim 1 wherein the compound of formula I is 2,2′-((2-hydroxytrimethylene)diimino)bis(2-methyl-1- propanol).
3. An aqueous based paint or coating according to claim 1 further comprising a freeze-thaw stabilizer of the formula A:
wherein n 6-60.
4. An aqueous based paint or coating according to claim 3 wherein the compound of formula I is 2,2′-((2-hydroxytrimethylene)-diimino)-bis(2-hydroxymethyl-1,3-propanediol).
5. A method for reducing the volatile organic compound content of an aqueous based paint or coating that contains a binder, a carrier, and a pigment, the method comprising using as a neutralizing agent in the paint or coating:
(a) an effective amount of a compound of formula I:
wherein R 1 and R 2 are independently at each occurrence H, CH 2 OH, C 1 -C 6 alkyl; and R 3 is independently at each occurrence H or C 1 -C 6 alkyl.