Polymer compositions containing aliphatic esters as plasticisers

Patent metadata

Field	Value
Publication number	US-2016347931-A1
Application number	US-201515111053-A
Country	US
Kind code	A1
Filing date	Jan 9, 2015
Priority date	Jan 13, 2014
Publication date	Dec 1, 2016
Grant date	—

Abstract

This invention relates to the use of a composition of aliphatic esters having the following general formula:
R 1 —O—C(O)—R 4 —C(O)—[—O—R 2 —O—C(O)—R 5 —C(O)—] m —O—R 3

in which:
R 1 is selected from one or more of the groups consisting of H, linear and branched saturated and unsaturated alkyl residues of the C 1 -C 24 type, and polyol residues esterified with C 1 -C 24 monocarboxylic acids; R 2 comprises —CH 2 —C(CH 3 ) 2 —CH 2 — and C 2 -C 8 alkylene groups, and comprises at least 50% in moles of the said —CH 2 —C(CH 3 ) 2 —CH 2 — groups; R 3 is selected from one or more of the groups consisting of H, linear and branched saturated and unsaturated alkyl residues of the C 1 -C 24 type, and polyol residues esterified with C 1 -C 24 monocarboxylic acids; R 4 and R 5 comprise one or more C 2 -C 22 alkylenes and comprise at least 50% in moles of C 7 alkylenes; m lies between 1 and 20,

as plasticizers for polymer compositions. These esters are particularly suitable for use as plasticizers for various types of polymers such as for example vinyl polymers of the polyvinyl chloride (PVC) type, thermoplastic elastomers, and hydroxy acid polyesters, for example polyesters of lactic acid.

First claim

1 . Polymer compositions comprising at least one thermoplastic polymer, and at least one plasticizer comprising a composition of one or more aliphatic esters having general formula:
R 1 —O—C(O)—R 4 —C(O)—[—O—R 2 —O—C(O)—R 5 —C(O)—] m —O—R 3

in which:
R 1 is selected from one or more of the groups consisting of H, linear and branched saturated and unsaturated alkyl residues of the C 1 -C 24 type, and polyol residues esterified with C 1 -C 24 monocarboxylic acids;
R 2 comprises —CH 2 —C(CH 3 ) 2 —CH 2 — and C 2 -C 8 alkylene groups, and comprises at least 50% by moles of the said —CH 2 —C(CH 3 ) 2 —CH 2 — groups;
R 3 is selected from one or more of the groups consisting of H, linear and branched saturated and unsaturated alkyl residues of the C 1 -C 24 type, and polyol residues esterified with C 1 -C 24 monocarboxylic acids;
R 4 and R 5 comprise one or more C 2 -C 22 alkylenes and comprise at least 50% by moles of C 7 alkylenes;
m lies between 1 and 20.

2 . Polymer compositions according to claim 1 , in which R 1 is H and R 3 is different from R 1 .

3 . Polymer compositions according to claim 1 , in which R 2 is the —CH 2 —C(CH 3 ) 2 —CH 2 — group.

4 . Polymer compositions according to claim 1 , in which R 4 and R 5 are C 7 alkylenes.

5 . Polymer compositions according to claim 1 , comprising from 10 to 80% by weight of the said aliphatic esters.

6 . Polymer compositions according to claim 1 , in which said one or more thermoplastic polymers are selected from chlorinated vinyl polymers, thermoplastic elastomers and hydroxy acid polyesters.

7 . A method for plasticizing a thermoplastic polymer composition which comprises incorporating in the thermoplastic polymer composition an aliphatic ester having general formula:
R 1 —O—C(O)—R 4 —C(O)—[—O—R 2 —O—C(O)—R 5 —C(O)—] m —O—R 3

in which:
R 1 is selected from one or more of the groups consisting of H, linear and branched saturated and unsaturated alkyl residues of the C 1 -C 24 type, and polyol residues esterified with C 1 -C 24 monocarboxylic acids;
R 2 comprises —CH 2 —C(CH 3 ) 2 —CH 2 — and C 2 -C 8 alkylene groups, and comprises at least 50% by moles of the said —CH 2 —C(CH 3 ) 2 —CH 2 — groups;
R 3 is selected from one or more of the groups consisting of H, linear and branched saturated and unsaturated alkyl residues of the C 1 -C 24 type, and polyol residues esterified with C 1 -C 24 monocarboxylic acids;
R 4 and R 5 comprise one or more C 2 -C 22 alkylenes and comprise at least 50% by moles of C 7 alkylenes;
m lies between 1 and 20.

8 . Polymer compositions according to claim 2 , in which R 2 is the —CH 2 —C(CH 3 ) 2 —CH 2 — group.

9 . Polymer compositions according to claim 8 , in which R 4 and R 5 are C 7 alkylenes.

10 . Polymer compositions according to claim 2 , in which R 4 and R 5 are C 7 alkylenes.

11 . Polymer compositions according to claim 3 , in which R 4 and R 5 are C 7 alkylenes.

12 . Polymer compositions according to claim 8 , comprising from 10 to 80% by weight of the said aliphatic esters.

13 . Polymer compositions according to claim 9 , comprising from 10 to 80% by weight of the said aliphatic esters.

14 . Polymer compositions according to claim 2 , comprising from 10 to 80% by weight of the said aliphatic esters.

15 . Polymer compositions according to claim 3 , comprising from 10 to 80% by weight of the said aliphatic esters.

16 . Polymer compositions according to claim 4 , comprising from 10 to 80% by weight of the said aliphatic esters.

17 . Polymer compositions according to claim 2 , in which said one or more thermoplastic polymers are selected from chlorinated vinyl polymers, thermoplastic elastomers and hydroxy acid polyesters.

18 . Polymer compositions according to claim 3 , in which said one or more thermoplastic polymers are selected from chlorinated vinyl polymers, thermoplastic elastomers and hydroxy acid polyesters.

19 . Polymer compositions according to claim 4 , in which said one or more thermoplastic polymers are selected from chlorinated vinyl polymers, thermoplastic elastomers and hydroxy acid polyesters.

20 . Polymer compositions according to claim 5 , in which said one or more thermoplastic polymers are selected from chlorinated vinyl polymers, thermoplastic elastomers and hydroxy acid polyesters.

Assignees

• Novamont Spa

Inventors

• Bastioli Catia
• CAPUZZZI Luigi
• Digioia Francesca
• Marini Nicola

Classifications

• C08G63/16 Primary

  Dicarboxylic acids and dihydroxy compounds · CPC title

• C08K5/10

  Esters; Ether-esters · CPC title

• C08L75/04

  Polyurethanes · CPC title

• C08L67/02

  Polyesters derived from dicarboxylic acids and dihydroxy compounds (C08L67/06 takes precedence) · CPC title

• C08K5/0016

  Plasticisers · CPC title