Biomass-resource-derived polyester and production process thereof

Patent metadata

Field	Value
Publication number	US-10870727-B2
Application number	US-201916290140-A
Country	US
Kind code	B2
Filing date	Mar 1, 2019
Priority date	Apr 22, 2005
Publication date	Dec 22, 2020
Grant date	Dec 22, 2020

Abstract

An aliphatic dicarboxylic acid, an aliphatic diol or a derivatives thereof and/or as succinic acid, a butane diol, or a both-hydroxy-terminated polyether having the number of carbon atoms of 4 to 1000, each of which is derived from a biomass resource and has nitrogen atoms in an amount of 0.01 to 100 ppm. Products and methods using these materials are also provided.

First claim

The invention claimed is:

1. A biomass-resource-derived polyester, comprising as a main repeating unit thereof at least one dicarboxylic acid unit and at least one diol unit, wherein at least one of the dicarboxylic acid and diol used as raw materials of the polyester is obtained from biomass resources and a nitrogen atom content in the polyester except nitrogen atoms contained in covalently bonded functional groups in the molecule of the polyester are, in terms of a mass ratio, 0.01 ppm to 100 ppm relative to the polyester.

2. The biomass-resource-derived polyester according to claim 1 , wherein the biomass resources are plant resources.

3. The biomass-resource-derived polyester according to claim 1 , wherein the nitrogen atom content in the polyester is, in terms of a mass ratio, 0.01 ppm to 50 ppm relative to the polyester.

4. The biomass-resource-derived polyester according to claim 1 , wherein the polyester has a reduced viscosity (ηsp/c) of 0.5 or greater.

5. The biomass-resource-derived polyester according to claim 1 , wherein the polyester has a reduced viscosity (ηsp/c) of 1.0 or greater.

6. The biomass-resource-derived polyester according to claim 1 , wherein the polyester has YI value of −10 to 30.

7. A process for producing the biomass-resource-derived polyester according to claim 1 , comprising reacting at least one dicarboxylic acid and at least one diol, wherein at least one of the dicarboxylic acid as raw material and diol as raw material provided for the reaction is derived from biomass resources; a nitrogen atom content in the dicarboxylic acid as raw material and diol as raw material derived from biomass resources is, in terms of a mass ratio, 0.01 ppm to 100 ppm relative to the total amount of the raw materials.

8. A biomass-resource-derived polyester obtained by the process as claimed in claim 7 .

9. A biomass-resource-derived polyester-sin composition, which comprises 99.9 to 0.1 wt. % of a biomass-resource-derived polyester according to claim 1 and 0.1 to 99.9 wt. % of a thermoplastic resin, biodegradable resin, natural resin or polysaccharide.

10. A pellet obtained from a biomass-resource-derived polyester according to claim 1 .

11. A pellet obtained from a biomass-resource-derived polyester resin composition according to claim 9 .

12. A molded product obtained by molding the biomass-resource-derived polyester according to claim 1 .

13. A molded product obtained by molding the biomass-resource-derived polyester resin composition according to claim 9 .

14. The molded product according to claim 12 , which is selected from the group consisting of a film, a sheet, a container, a nonwoven fabric, a fiber and a foam.

15. The molded product according to claim 13 , which is selected from the group consisting of a film, a sheet, a container, a nonwoven fabric, a fiber and a foam.

Assignees

• Mitsubishi Chem Corp

Inventors

• Aoshima Takayuki
• Miki Yasuaki
• Kumazawa Katsuhisa
• Katou Satoshi
• Uyeda Tadashi
• Hoshino Toyomasa
• Shintani Noboru
• Yamagishi Kenji
• Isotani Atsushi

Classifications

• C12R2001/13

  Brevibacterium · CPC title

• C12P7/46

  Dicarboxylic acids having four or less carbon atoms, e.g. fumaric acid, maleic acid · CPC title

• C12P7/44

  Polycarboxylic acids · CPC title

• C12N15/52

  Genes encoding for enzymes or proenzymes · CPC title

• C12P7/18

  polyhydric · CPC title