# US 12,180,325 B2 · Polycarbonate diols and their uses

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- Number: US 12,180,325 B2
- Document ID: US12180325B2
- Status: Granted
- Kind: B2
- Application number: 17/436,391
- Filed: 2020-02-20
- Published: 2022-05-12
- Granted: 2024-12-31
- Earliest claimed: 2019-03-07
- Assignees: Asahi Kasei Kabushiki Kaisha
- Applicants: Asahi Kasei Kabushiki Kaisha
- Inventors: Hayato Yabuki; Eizaburou Ueno; Yasuyuki Tsukimori
- Web page: https://patentgrep.com/patent/US12180325B2

## CPC

- C08G 18/3206: {aliphatic}
- C08G 18/73: acyclic
- C08G 18/0823: {containing carboxylate salt groups or groups forming them}
- C08G 18/10: Prepolymer processes involving reaction of isocyanates or isothiocyanates with compounds having active hydrogen in a first reaction step
- C08G 18/246: {containing also tin-carbon bonds}
- C08G 18/348: {Hydroxycarboxylic acids}
- C08G 18/44: Polycarbonates
- C08G 18/6659: {with compounds of group C08G18/34}
- C08G 18/755: {and at least one isocyanate or isothiocyanate group linked to a secondary carbon atom of the cycloaliphatic ring, e.g. isophorone diisocyanate}
- C08G 18/7671: {containing only one alkylene bisphenyl group}
- C08G 18/792: {formed by oligomerisation of aliphatic and/or cycloaliphatic isocyanates or isothiocyanates}
- C08G 64/0208: {saturated}
- C08G 64/305: {and alcohols}
- C09D 5/022: {Emulsions, e.g. oil in water}
- C09D 169/00: Coating compositions based on polycarbonates; Coating compositions based on derivatives of polycarbonates
- C09D 175/06: from polyesters
- C08G: MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C09D: COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR (cosmetics A61K; processes for applying liquids or other fluent materials to surfaces, in general, B05D; staining wood B27K5/02; glazes or vitreous enamels C03C; natural resins, French polish, drying-oils, driers, turpentine, per se, C09F; polishing compositions other than French polish, ski waxes C09G; adhesives or use of materials as adhesives C09J; materials for sealing or packing joints or covers C09K3/10; materials for stopping leaks C09K3/12; processes for the electrolytic or electrophoretic production of coatings C25D)

## Abstract

A polycarbonate diol comprising a repeating unit represented by the following formula (A) in a proportion of 0.1% by mass or more and 99.9% by mass or less:

## Claims

### Claim 1

A polycarbonate diol comprising a repeating unit represented by the following formula (A) in a proportion of 0.1% by mass or more and 89% by mass or less:

### Claim 2 (depends on 1)

The polycarbonate diol according to claim 1, wherein the proportion of the repeating unit represented by the formula (A) is 0.1% by mass or more and 50.0% by mass or less.

### Claim 3 (depends on 1)

The polycarbonate diol according to claim 1, further comprising a repeating unit represented by the following formula (B) in a proportion of 0.1% by mass or more and 99.9% by mass or less:
wherein R represents a divalent hydrocarbon group having 3 to 20 carbon atoms which optionally comprises an oxygen atom in its carbon backbone.

### Claim 4 (depends on 3)

The polycarbonate diol according to claim 3, wherein R in the formula (B) has 3 to 6 carbon atoms.

### Claim 5 (depends on 1)

The polycarbonate diol according to claim 1, wherein the polycarbonate diol has a number average molecular weight of 300 or more and 4,000 or less.

### Claim 6 (depends on 1)

The polycarbonate diol according to claim 1, wherein the polycarbonate diol has a proportion of a primary hydroxyl terminal of 90% or more.

### Claim 7 (depends on 1, 2, 3, 4, 5, 6)

A coating composition comprising the polycarbonate diol according to any one of claims 1 to 6.

### Claim 8 (depends on 1, 2, 3, 4, 5, 6)

An aqueous polyurethane dispersion comprising a water-dispersible polyurethane obtained by using the polycarbonate diol according to any one of claims 1 to 6, and water.

### Claim 9 (depends on 8)

A water-based coating composition comprising the aqueous polyurethane dispersion according to claim 8.

### Claim 10 (depends on 1, 2, 3, 4, 5, 6)

An elastomer obtained by reacting the polycarbonate diol according to any one of claims 1 to 6 with an isocyanate compound.

### Claim 11 (depends on 2)

The polycarbonate diol according to claim 2, further comprising a repeating unit represented by the following formula (B) in a proportion of 0.1% by mass or more and 99.9% by mass or less:
wherein R represents a divalent hydrocarbon group having 3 to 20 carbon atoms which optionally comprises an oxygen atom in its carbon backbone.

### Claim 12 (depends on 4)

The polycarbonate diol according to claim 4, wherein the polycarbonate diol has a number average molecular weight of 300 or more and 4,000 or less.

### Claim 13 (depends on 11)

The polycarbonate diol according to claim 11, wherein the polycarbonate diol has a number average molecular weight of 300 or more and 4,000 or less.

### Claim 14 (depends on 3)

The polycarbonate diol according to claim 3, wherein the polycarbonate diol has a proportion of a primary hydroxyl terminal of 90% or more.

### Claim 15 (depends on 4)

The polycarbonate diol according to claim 4, wherein the polycarbonate diol has a proportion of a primary hydroxyl terminal of 90% or more.

### Claim 16 (depends on 11)

The polycarbonate diol according to claim 11, wherein the polycarbonate diol has a proportion of a primary hydroxyl terminal of 90% or more.

### Claim 17 (depends on 3)

The polycarbonate diol according to claim 3, wherein the sum of the proportion of the repeating unit represented by the formula (A) and the proportion of the repeating unit represented by the formula (B) is 50% by mass or more.

### Claim 18 (depends on 3)

The polycarbonate diol according to claim 3, wherein the proportion of the repeating unit represented by the formula (B) is 50.0% by mass or more and 99.9% by mass or less.

### Claim 19 (depends on 4)

The polycarbonate diol according to claim 4, wherein the sum of the proportion of the repeating unit represented by the formula (A) and the proportion of the repeating unit represented by the formula (B) is 50% by mass or more.

### Claim 20 (depends on 4)

The polycarbonate diol according to claim 4, wherein the proportion of the repeating unit represented by the formula (B) is 50.0% by mass or more and 99.9% by mass or less.