Oxazoline compounds as open-time extenders for latex paints
View Patent ↗An aqueous coating composition containing a compound of formula (I) wherein R 1 is a C 2 -C 20 hydrocarbyl group; and R 2 and R 3 independently are C 1 -C 10 alkyl or HO(CH 2 CH 2 O) x CH 2 —, wherein x represents an integer from 0-5.
1. An aqueous coating composition comprising
0.1-10 wt %, based on the weight of the entire composition, of a compound of formula (I)
wherein R 1 is a C 2 -C 20 hydrocarbyl group; and R 2 and R 3 independently are C 1 -C 10 alkyl or HO(CH 2 CH 2 O) x CH 2 , wherein x represents an integer from 0-5;
30 to 60 wt % water;
15 to 40 wt % acrylic binder on a solids basis; and
15 to 35 wt % opacifying minerals,
wherein the aqueous coating composition is a latex paint.
2. The aqueous coating composition of claim 1 in which R 1 is a C 7 -C 20 aliphatic hydrocarbyl group.
3. The aqueous coating composition of claim 1 in which R 2 and R 3 independently are C 1 -C 6 alkyl or HO(CH 2 CH 2 O) x CH 2 , wherein x represents an integer from 0-5.
4. The aqueous coating composition of claim 1 in which x is from 0 to 3.
5. The aqueous coating composition of claim 1 in which R 1 is an alkyl or alkenyl group.
6. The aqueous coating composition of claim 1 in which R 1 is a C 15 -C 17 alkyl or alkenyl group.
7. The aqueous coating composition of claim 1 in which x is 0 or 1.
8. The aqueous coating composition of claim 1 in which the composition has a pH from 7 to 10.
9. The aqueous coating composition of claim 1 in which the compound of formula (I) is present in the aqueous coating composition in an amount from 0.1 to 5 wt %, based on the weight of the entire composition.
10. The aqueous coating composition of claim 1 in which R 1 is a C 11 -C 19 aliphatic hydrocarbyl group.
11. The aqueous coating composition of claim 1 in which R 1 is a C 11 -C 17 alkyl or alkenyl group.
12. The aqueous coating composition of claim 11 in which the alkenyl group comprises one to three carbon-carbon double bonds.
13. The aqueous coating composition of claim 11 in which the alkenyl group comprises cis carbon-carbon double bonds.
14. The aqueous coating composition of claim 1 in which R 2 and R 3 independently are C 1 -C 2 alkyl or HO(CH 2 CH 2 O) x CH 2 , wherein x represents an integer from 0-5.
15. The aqueous coating composition of claim 1 in which x is 0.
16. The aqueous coating composition of claim 1 in which the compound of formula (I) is selected from the group consisting of
17. The aqueous coating composition of claim 1 in which the composition comprises two or more compounds of formula (I).
18. The aqueous coating composition of claim 1 comprising 18-32 wt % opacifying minerals.
19. The aqueous coating composition of claim 1 wherein the opacifying minerals comprise titanium dioxide.