Coating composition comprising pH-sensitive polymer

Patent metadata

Field	Value
Publication number	US-12564203-B2
Application number	US-202118026394-A
Country	US
Kind code	B2
Filing date	Nov 23, 2021
Priority date	Nov 23, 2020
Publication date	Mar 3, 2026
Grant date	Mar 3, 2026

Abstract

The present disclosure relates to a pH-sensitive polymer with a hydrophilic amino acid, a hydrophobic amino acid, and a fatty acid, a coating composition, and a feed additive coated with the coating composition.

First claim

The invention claimed is:

1 . A pH-sensitive polymer comprising a hydrophilic amino acid, a hydrophobic amino acid, and a fatty acid as monomers, and further comprising a chain extender.

2 . The pH-sensitive polymer according to claim 1 , wherein the hydrophilic amino acid is lysine, arginine, or both of lysine and arginine.

3 . The pH-sensitive polymer according to claim 1 , wherein the hydrophobic amino acid is one or more selected from the group consisting of phenylalanine, tryptophan, valine, and tyrosine.

4 . The pH-sensitive polymer according to claim 1 , wherein the fatty acid is one or more selected from the group consisting of stearic acid, palmitic acid, and lauric acid.

5 . The pH-sensitive polymer according to claim 1 , wherein the chain extender is glutamic acid, aspartic acid, or both of glutamic acid and aspartic acid.

6 . The pH-sensitive polymer according to claim 1 , wherein the hydrophilic amino acid is contained at 50 mol % to 75 mol % in total monomers.

7 . The pH-sensitive polymer according to claim 1 , wherein the hydrophobic amino acid is contained at 10 mol % to 35 mol % in total monomers.

8 . The pH-sensitive polymer according to claim 1 , wherein the fatty acid is contained at 5 mol % to 20 mol % in total monomers.

9 . The pH-sensitive polymer according to claim 1 , wherein the chain extender is contained at a concentration greater than 0 mol % and 15 mol % or less in total monomers.

10 . A coating composition comprising a pH-sensitive polymer, a fatty acid, and cellulose or a derivative of cellulose, wherein the pH-sensitive polymer comprises a hydrophilic amino acid, a hydrophobic amino acid, and a fatty acid as monomers.

11 . The coating composition according to claim 10 , wherein the coating composition is for protection from decomposition in ruminant stomach.

12 . The coating composition according to claim 10 , wherein the fatty acid is one or more selected from the group consisting of stearic acid, lauric acid, and palmitic acid.

13 . The coating composition according to claim 10 , wherein the derivative of cellulose is one or more selected from the group consisting of cellulose, ethyl cellulose, and methyl cellulose.

14 . A feed additive coated to be protected from decomposition in ruminant stomach, comprising a core particle comprising an active ingredient; and a coating layer formed on the core particle using the coating composition according to claim 10 .

15 . The feed additive according to claim 14 , wherein the feed additive is for a ruminant.

16 . The feed additive according to claim 14 , wherein the coating layer is not decomposed in ruminant stomach at a pH of 6 to 8 but is selectively decomposed in a fourth compartment at a pH of 3 or less to release the active ingredient.

17 . The coating composition according to claim 10 , wherein the pH-sensitive polymer further comprises a chain extender.

Assignees

• Cj Cheiljedang Corp

Inventors

• Kim Jieun
• Kim Jeongsu
• Noh Sora
• Ku Sook Hee
• Park Jinseung
• Moon Jun Ok
• Park Shin-Ae
• Oh Changyub
• Bang Sung Ki
• Son In Sik
• Choi Jin Woo

Classifications

• A23K50/10

  for ruminants · CPC title

• A23K40/35

  Making capsules specially adapted for ruminants · CPC title

• A23K40/25

  by extrusion · CPC title

• A23K20/158

  Fatty acids; Fats; Products containing oils or fats · CPC title

• C08K5/09

  Carboxylic acids; Metal salts thereof; Anhydrides thereof · CPC title