PEBA for direct adhesion to TPE

Patent metadata

Field	Value
Publication number	US-10246618-B2
Application number	US-201615192276-A
Country	US
Kind code	B2
Filing date	Jun 24, 2016
Priority date	Jun 26, 2015
Publication date	Apr 2, 2019
Grant date	Apr 2, 2019

Abstract

The invention relates to a copolymer having polyamide PA blocks and polyether PE blocks, in which PA is of diamine.diacid X.Y type; X, the number of carbons of the diamine, is within the range from 6 to 14, and Y, the number of carbons of the diacid, is within the range from 6 to 18. The invention also relates to the use of the said copolymer in a process of direct adhesion between two TPE materials for increasing the peel strength between these materials.

First claim

The invention claimed is:

1. A composite article comprising at least two polymer materials which adhere directly to one another, wherein:
a first polymer material is made of a copolymer having polyamide PA blocks and polyether PE blocks (PEBA), in which the number of carbons of the diamine in the PA blocks is within the range from 6 to 14, and the number of carbons of the diacid in the PA blocks is within the range from 6 to 18, and
a second polymer material is made of thermoplastic elastomer (TPE) chosen from identical PEBA with a flexural modulus different from that of the copolymer, PEBA of composition different from that of the said copolymer, copolyether-block-ester (COPE) and/or copolyether-block-urethane (TPU).

2. The composite article according to claim 1 , in which the number of carbons of the diamine in the PA blocks is 6 or 10, and the number of carbons of the diacid in the PA blocks is 10 or 12.

3. The composite article according to claim 1 , in which PE is chosen from polytetramethylene glycol (PTMG), polypropylene glycol (PPG), polytrimethylene glycol (PO3G) and/or polyethylene glycol (PEG).

4. The composite article according to claim 1 , in which the said copolymer comprises from 51 to 90% by weight of polyamide blocks and respectively from 49 to 10% by weight of polyether blocks, with respect to the total weight of copolymer.

5. The composite article according to claim 1 , in which the number-average molecular weight (Mn) of the PA blocks is within the range from 500 to 10,000.

6. The composite article according to claim 1 , in which the number-average molecular weight (Mn) of the PE blocks is within the range from 400 to 1000.

7. The composite article according to claim 1 , wherein the composite article is configured for use in the manufacture of sports equipment, as a component of footwear, as a medical device, as a transmission belt, as an antistatic additive, as waterproof-breathable film, as support for active molecules, as colouring agent, as welding agent, as decorative element and/or as additive for polyamide.

Assignees

• Arkema France

Inventors

• Eustache René-Paul
• Sabard Mathieu
• Deyrail Yves
• Pineau Quentin
• Turan-Altuntas Inci
• Pouzet Martin
• Yoshitake Atsushi

Classifications

• C08L77/06

  Polyamides derived from polyamines and polycarboxylic acids (C08L77/10 takes precedence) · CPC title

• C09J2475/006

  in the substrate · CPC title

• C08G81/00

  Macromolecular compounds obtained by interreacting polymers in the absence of monomers, e.g. block polymers (involving only carbon-to-carbon unsaturated bond reactions C08F299/00 {; polyester-amides C08G69/44; polyester-imides C08G73/16; polyamides-imides C08G73/14; block- or graft polymers containing polysiloxane sequences C08G77/42}) · CPC title

• B32B2371/00

  Polyethers, e.g. PEEK, i.e. polyether-etherketone; PEK, i.e. polyetherketone · CPC title

• B32B27/34

  comprising polyamides · CPC title