Granted Patent B2

US 12,359,023 · App. 17/622,435 · Granted Jul 15, 2025

Inventors: Shintarou Hatanaka (Tokyo, JP); Takashi Konno (Tokyo, JP)

Assignee: DAICEL CORPORATION

C08G64/42C08G18/44C08G64/02C08G64/0241C09D175/04

Abstract

Claims (18)

1. A polycarbonate polyol derivative represented by Formula (1):

where A is a group comprising a polycarbonate skeleton, and n and m are average values and are numbers satisfying n≥2 and n−m>0;

wherein a molar ratio of terminal amino groups to terminal hydroxyl groups in Formula (1) is from 60/40 to 85/15.

2. The polycarbonate polyol derivative according to claim 1 , wherein A in Formula (1) is a group in which all hydroxyl groups are removed from the structural formula of a polycarbonate polyol having a number average molecular weight from 300 to 10000, and includes a group having a repeating unit represented by Formula (a):

where R is a hydrocarbon group or a group in which two or more hydrocarbon groups are bonded through a single bond or a linking group, and may have a substituent, the substituent being a —(OC(═O)OR′) t —OH group; R′ denotes a hydrocarbon group or a group in which two or more hydrocarbon groups are bonded through a single bond or linking group, and t is an integer of 1 or greater.

3. The polycarbonate polyol derivative according to claim 1 , wherein n and m in Formula (1) are numbers satisfying (n−m)/m=1.5 to 6.0.

4. The polycarbonate polyol derivative according to claim 1 , wherein the molar ratio of terminal amino groups to terminal hydroxyl groups is 65/35 to 85/15.

5. The polycarbonate polyol derivative according to claim 1 , wherein the molar ratio of terminal amino groups to terminal hydroxyl groups is 65/35 to 80/20.

6. A polyurethane polyurea resin, the polyurethane polyurea resin being a polyadduct of an alcohol compound and a polyisocyanate compound, and the alcohol compound including a polycarbonate polyol derivative described in claim 1 .

7. A one-component paint comprising the polyurethane polyurea resin described in claim 6 .

8. A two-component paint comprising the polycarbonate polyol derivative described in claim 1 and a polyisocyanate compound.

9. The polycarbonate polyol derivative according to claim 1 , wherein a total functional group value of the amino groups and hydroxyl groups of the compound represented by Formula (1) is from 1 to 300 KOHmg/g, the total functional group value being determined by a method in accordance with JIS K 0070.

10. A method of producing a one-component paint, the method comprising reacting a polycarbonate polyol derivative and a polyisocyanate compound,

wherein the polycarbonate polyol derivative is represented by Formula (1):

wherein A is a group comprising a polycarbonate skeleton, n and m are average values satisfying n>2 and n−m>0, and a molar ratio of terminal amino groups to terminal hydroxyl groups in Formula (1) is from 60/40 to 85/15.

11. The method of producing a one-component paint according to claim 10 , wherein A in Formula (1) is a group in which all hydroxyl groups are removed from the structural formula of a polycarbonate polyol having a number average molecular weight from 300 to 10000, and includes a group having a repeating unit represented by Formula (a):

where R is a hydrocarbon group or a group in which two or more hydrocarbon groups are bonded through a single bond or a linking group, and may have a substituent, the substituent being a —(OC(═O)OR′) t —OH group; R′ is a hydrocarbon group or a group in which two or more hydrocarbon groups are bonded through a single bond or linking group, and t is an integer of 1 or greater.

12. The method of producing a one-component paint according to claim 10 , wherein n and m in Formula (1) are numbers satisfying (n−m)/m=1.5 to 6.0.

Assignments (1)

Priority Claims (1)

Continuity (1)

References Cited (17)