Adhesive composition and method for preparing same

Patent metadata

Field	Value
Publication number	US-11292944-B2
Application number	US-201816496613-A
Country	US
Kind code	B2
Filing date	Mar 21, 2018
Priority date	Mar 21, 2017
Publication date	Apr 5, 2022
Grant date	Apr 5, 2022

Abstract

Provided is an adhesive composition including lysine, citric acid, and water, wherein the lysine and the citric acid are present in the form of an aqueous solution of a salt such that precipitates are not formed in the aqueous solution. In addition, provided is a method of preparing an adhesive composition including mixing lysine, citric acid, and water to thereby form a mixture of the lysine, the citric acid, and the water, and stirring the mixture at a temperature of 80° C. or less, wherein amounts of the lysine, the citric acid, and the water are adjusted such that precipitates of the lysine and the citric acid do not form in the adhesive composition.

First claim

What is claimed is:

1. An adhesive composition comprising lysine, citric acid, and water,
wherein the lysine and the citric acid are present in the form of an aqueous solution of a salt and do not form precipitates in the aqueous solution,
wherein a mixing molar ratio of the lysine to the citric acid is adjusted such that precipitates of the lysine and the citric acid are not formed in the adhesive composition, and
wherein the mixing molar ratio of the lysine to the citric acid is from 1.7:1 to 1:3.

2. The adhesive composition of claim 1 , wherein the precipitates are precipitates of the lysine and the citric acid.

3. The adhesive composition of claim 1 , wherein a solid content of the adhesive composition is equal to or less than 70 parts by weight based on a total weight of the adhesive composition.

4. The adhesive composition of claim 1 , further comprising at least one solvent selected from a primary alcohol, a polyhydric alcohol, a diol, and a triol.

5. The adhesive composition of claim 4 , wherein the solvent comprises: at least one monohydric alcohol selected from methanol, ethanol, propane-2-ol, butane-1-ol, pentane-1-ol, and hexadecane-1-ol; at least one polyhydric alcohol selected from ethane-1,2-diol, propane-1,2-diol, propane-1,2,3-triol, butane-1,3-diol, butane-1,2,3,4-tetraol, pentane-1,2,3,4,5-pentol, hexane-1,2,3,4,5,6-hexol, and heptane-1,2,3,4,5,6,7-heptol; at least one unsaturated aliphatic alcohol selected from prop-2-ene-1-ol, 3,7-dimethylocta-2,6-dien-1-ol, and prop-2-yn-1-ol; at least one alicyclic alcohol selected from cyclohexane-1,2,3,4,5,6-hexol and 2-(2-propyl)-5-methylcyclohexane-1-ol; or a mixture thereof.

6. The adhesive composition of claim 1 , wherein precipitates are not formed in the adhesive composition when stored at a temperature of −18° C. to 45° C. for 14 days or longer.

7. The adhesive composition of claim 1 , wherein a contact angle of the adhesive composition with a surface of a substrate to which the adhesive composition is applied is from 15° to 70°.

8. A method of preparing an adhesive composition, the method comprising:
mixing lysine, citric acid, and water to thereby form a mixture of the lysine, the citric acid, and the water; and
stirring the mixture at a temperature of 80° C. or less,
wherein amounts of the lysine, the citric acid, and the water are adjusted such that precipitates of the lysine and the citric acid are not formed in the adhesive composition, wherein the mixing molar ratio of the lysine to the citric acid is from 1.7:1 to 1.3.

9. The method of claim 8 , wherein the mixture further comprises at least one solvent selected from a primary alcohol, a polyhydric alcohol, a diol, and a triol.

10. An adhesive product comprising the adhesive composition of claim 1 .

Assignees

• Cj Cheiljedang Corp

Inventors

• Hwang Ji Ho
• Moon Jun Ok
• Yang Young Lyeol
• Lee Chang Suk
• Moon Sang Gwon
• Choi Su Jin

Classifications

• C09J4/00 Primary

  Adhesives based on organic non-macromolecular compounds having at least one polymerisable carbon-to-carbon unsaturated bond {; adhesives, based on monomers of macromolecular compounds of groups C09J183/00 - C09J183/16} · CPC title

• C09J11/06 Primary

  organic · CPC title

• C09J189/00

  Adhesives based on proteins; Adhesives based on derivatives thereof · CPC title

• C09J11/00 Primary

  Features of adhesives not provided for in group C09J9/00, e.g. additives · CPC title

• A61K8/365 Primary

  Hydroxycarboxylic acids; Ketocarboxylic acids · CPC title