Polyesters

Patent metadata

Field	Value
Publication number	US-9732308-B2
Application number	US-201314418681-A
Country	US
Kind code	B2
Filing date	Jul 24, 2013
Priority date	Jul 31, 2012
Publication date	Aug 15, 2017
Grant date	Aug 15, 2017

Abstract

Polyesters according to the following formula (I) are described

wherein
R 1 and R 2 independently of one another are X—(OC 2 H 4 ) n —(OC 3 H 6 ) m wherein X is C 1-4 alkyl, the —(OC 2 H 4 ) groups and the —(OC 3 H 6 ) groups are arranged blockwise and the block consisting of the —(OC 3 H 6 ) groups is bound to a COO group or are HO—(C 3 H 6 ), n is based on a molar average a number of from 12 to 120, m is based on a molar average a number of from 1 to 10, and a is based on a molar average a number of from 4 to 9.

The inventive polyesters have an advantageous stability in alkaline environment, possess a beneficial solubility and advantageously are clearly soluble in alkaline compositions such as alkaline heavy duty washing liquids and also possess advantageous soil release properties.

First claim

The invention claimed is:

1. A polyester according to the following formula (I)

wherein
R 1 and R 2 independently of one another are X—(OC 2 H 4 ) n —(OC 3 H 6 ) m wherein X is C 1-4 alkyl, the —(OC 2 H 4 ) groups and the —(OC 3 H 6 ) groups are arranged blockwise and the block consisting of the —(OC 3 H 6 ) groups is bound to a COO group,
n is a number of from 40 to 50,
m is a number of from 1 to 10, and
a is a number of from 5 to 8 and
wherein n, m, and a are based on a molar average.

2. The polyester according to claim 1 , wherein
R 1 and R 2 independently of one another are H 3 C—(OC 2 H 4 ) n —(OC 3 H 6 ) m wherein the —(OC 2 H 4 ) groups and the —(OC 3 H 6 ) groups are arranged blockwise and the block consisting of the —(OC 3 H 6 ) groups is bound to a COO group,
n is a number of from 40 to 50,
m is a number of from 1 to 7, and
a is a number of from 5 to 8.

3. The polyester according to claim 1 , wherein a is a number of from 6 to 7.

4. The polyester according to claim 1 , wherein m is a number of from 2 to 5.

5. The polyester according to claim 1 , wherein n is a number of from 43 to 47.

6. The polyester according to claim 5 , wherein n is a number of from 44 to 46.

7. The polyester according to claim 6 , wherein n is 45.

8. The polyester according to claim 1 , wherein
R 1 and R 2 independently of one another are H 3 C—(OC 2 H 4 ) n —(OC 3 H 6 ) m wherein the —(OC 2 H 4 ) groups and the —(OC 3 H 6 ) groups are arranged blockwise and the block consisting of the —(OC 3 H 6 ) groups is bound to a COO group,
n is a number of from 44 to 46,
m is 2, and
a is a number of from 5 to 8.

9. The polyester according to claim 8 , wherein n is 45, and a is a number of from 6 to 7.

10. The polyester according to claim 1 , wherein
R 1 and R 2 independently of one another are H 3 C—(OC 2 H 4 ) n —(OC 3 H 6 ) m wherein the —(OC 2 H 4 ) groups and the —(OC 3 H 6 ) groups are arranged blockwise and the block consisting of the —(OC 3 H 6 ) groups is bound to a COO group,
n is a number of from 44 to 46,
m is 5, and
a is a number of from 5 to 8.

11. The polyester according to claim 10 , wherein n is 45, and a is a number of from 6 to 7.

12. A process for the preparation of a polyester according to claim 1 , comprising the step of heating dimethyl terephthalate, 1,2-propylene glycol, and X—(OC 2 H 4 ) n —(OC 3 H 6 ) m —OH, wherein X is C 1-4 alkyl and preferably methyl, the —(OC 2 H 4 ) groups and the —(OC 3 H 6 ) groups are arranged blockwise and the block consisting of the —(OC 3 H 6 ) groups is bound to the hydroxyl group —OH and n and m are as defined in claim 1 , with the addition of a catalyst, to temperatures of from 160 to 220° C., firstly at atmospheric pressure, and then continuing the reaction under reduced pressure at temperatures of from 160 to 240° C.

Assignees

• Clariant Int Ltd
• Clariant Int Ltd

Inventors

• Fischer Dirk
• Lindner Thomas

Classifications

• C11D11/0017

  Chemistry & Metallurgy · mapped topic

• C08G63/183

  Terephthalic acids · CPC title

• C11D3/3715 Primary

  Polyesters or polycarbonates · CPC title

• C11D3/0036

  Soil deposition preventing compositions; Antiredeposition agents · CPC title

• C08G63/672

  Dicarboxylic acids and dihydroxy compounds · CPC title