Aqueous resin dispersion, paint, adhesive, and laminate
View Patent ↗An aqueous resin dispersion wherein a polymer (C) obtained by bonding a polyolefin (A) to a polyether resin (B) is dispersed in water; and the polyether resin (B) contains a polyether resin (B1) having an HLB of less than 8 and a polyether resin (B2) having an HLB of 8 to 20 according to calculation by the Griffin method.
1. An aqueous resin dispersion wherein a polymer (C) obtained by bonding a polyolefin (A) to a polyether resin (B) is dispersed in water; and the polyether resin (B) contains a polyether resin (B1) having an HLB of less than 8 and a polyether resin (B2) having an HLB of 8 to 20 according to calculation by the Griffin method, and wherein that the polyether resin (B) is represented by formula (1):
wherein X is an alkylene group having a carbon number of 3 to 4, Y is an alkylene group having a carbon number of 2, R is a hydrogen atom, an amino group, or an alkyl group having a carbon number of 1 to 3, n is a number from 1 to 40, and m is a number from 1 to 30, and wherein the polyolefin (A) is bonded to the polyether resin (B) in a ratio of between 100:10 and 100:50, and the amount of polyether resin (B1) bonded to the polyolefin (A) is from 5 to 40 parts by weight per 100 parts by weight of the polyolefin (A).
2. The aqueous resin dispersion according to claim 1 , wherein the weight average molecular weight [Mw] of each of the polyether resin (B1) and the polyether resin (B2) is from 500 to 3,000.
3. The aqueous resin dispersion according to claim 1 , wherein the polyolefin (A) is a polyolefin (A1) having no reactive group or a polyolefin (A2) having a reactive group.
4. The aqueous resin dispersion according to claim 1 , wherein the polyolefin (A2) contains one or more reactive groups (D) selected from the group consisting of a carboxylic acid group, a dicarboxylic anhydride group and a dicarboxylic anhydride monoester group, in a ratio of polyolefin (A2) : reactive group (D)=100:0.1 to 100:5 (weight ratio).
5. The aqueous resin dispersion according to claim 1 , wherein the polyolefin (A) is a propylene-α-olefin copolymer having a weight average molecular weight [Mw] of 10,000 to 300,000 and a propylene content of 50 mol % or more.
6. The aqueous resin dispersion according to claim 1 , wherein HLB of the polyether resin (B1) is 1 to 6 and HLB of the polyether resin (B2) is 10 to 20.
7. A coating material comprising the aqueous resin dispersion according to claim 1 .
8. An adhesive comprising the aqueous resin dispersion according to claim 1 .
9. A laminate obtained through steps of applying the aqueous resin dispersion according to claim 1 or the coating material according to claim 7 , and heating.
10. A laminate obtained through steps of applying the coating material according to claim 7 and heating.
11. The aqueous resin dispersion according to claim 1 , wherein the ratio of polyether resin (B1) to polyether resin (B) is 10 to 90 wt %.