Composite tubing and method for making and using same

Patent metadata

Field	Value
Publication number	US-2017191586-A1
Application number	US-201615395437-A
Country	US
Kind code	A1
Filing date	Dec 30, 2016
Priority date	Dec 30, 2015
Publication date	Jul 6, 2017
Grant date	—

Abstract

A composite tube includes an inner layer including a silicone polymer, wherein the inner layer has a surface that defines a central lumen of the composite tube; an adhesive layer adjacent to the inner layer, wherein the adhesive layer includes an adhesive silicone material including a silicone polymer and an adhesion promoter, and an outer layer adjacent to the adhesive layer, wherein the outer layer includes a thermoplastic polymer having a functional group that forms a chemical bond with the adhesion promoter of the adhesive silicone material.

First claim

What is claimed is:

1 . A composite tube comprising:
an inner layer comprising a silicone polymer, wherein the inner layer has a surface that defines a central lumen of the composite tube; an adhesive layer adjacent to the inner layer, wherein the adhesive layer comprises an adhesive silicone material comprising a silicone polymer and an adhesion promoter, and an outer layer adjacent to the adhesive layer, wherein the outer layer comprises a thermoplastic polymer having a functional group that forms a chemical bond with the adhesion promoter of the silicone polymer.

2 . The composite tube of claim 1 , wherein the silicone polymer of the adhesive silicone material has a viscosity of less than about 2,000,000 centipoise prior to cure.

3 . The composite tube of claim 1 , wherein the silicone polymer of the adhesive silicone material comprises a liquid silicone rubber (LSR) or a room temperature vulcanizing silicone (RTV).

4 . The composite tube of claim 1 , wherein the silicone polymer of the adhesive silicone material includes a catalyst.

5 . The composite tube of claim 1 , wherein the adhesion promoter comprises a siloxane or silane such as 3-methacryloxypropyltrimethoxysilane, 3-glycidoxypropyltrimethoxysilane, vinyl-tris(2-methoxyethoxy)-silane; 2,5,7,10-tetraoxa-6-silaundecane, 6-ethenyl-6-(2-methoxyethoxy)-silane, a hydrogen phenyl silicone, a phenyl silane, or any combination thereof.

6 . The composite tube of claim 1 , wherein the thermoplastic polymer has an oxygen permeation rate of less than about 20,000 cc-mm/(m 2 -day-atm).

7 . The composite tube of claim 1 , wherein the thermoplastic polymer is a polyester, a polyurethane, a nylon, a polyimide, a polyamide, a polyether, a polystyrene, an acrylonitrile butadiene styrene (ABS), a polybutylene terephthalate (PBT), a polyacrylic, an ethylene vinyl alcohol (EVOH), a polyolefin, an ethylene propylene diene elastomer, a copolymer, blend, or combination thereof.

8 . The composite tube of claim 1 , wherein the functional group comprises a hydroxide, a carbonyl, an alcohol, a carboxyl, a phenyl group, an amine, a diene, or combination thereof.

9 . The composite tube of claim 1 , wherein the outer layer further comprises a catalyst, a crosslink promoter, or combination thereof.

10 . The composite tube of claim 1 , wherein the functional group and the adhesion promoter form a cohesive bond.

11 . The composite tube of claim 1 , wherein silicone polymer of the inner layer comprises a liquid silicone rubber, a high consistency rubber, or a room temperature vulcanizing silicone.

12 . An apparatus comprising a composite tube according to claim 1 , wherein the apparatus is a medical device, a pharmaceutical device, a biopharmaceutical device, a chemical delivery device, a laboratory device, a water treatment device, a food and beverage device, a document printing device, an industrial cleaning device, an automotive device, an aerospace device, an electronics device, or a fuel delivery device.

13 . A method of forming a composite tube comprising:
providing an inner layer comprising a silicone polymer, wherein the inner layer has a surface that defines a central lumen of the composite tube; extruding an adhesive layer adjacent to the inner layer, wherein the adhesive layer comprises an adhesive silicone material comprising a silicone polymer and an adhesion promoter; extruding an outer layer adjacent to the adhesive layer, wherein the outer layer comprises a thermoplastic polymer having a functional group that forms a chemical bond with the adhesion promoter of the adhesive layer; and irradiating the adhesive layer and the outer layer with a radiation source to form the chemical bond between the functional group of the outer layer and the adhesion promoter of the adhesive layer.

14 . The method of forming the composite tube of claim 13 , wherein the silicone polymer of the adhesive silicone material has a viscosity of less than about 2,000,000 centipoise prior to cure.

15 . The method of forming the composite tube of claim 13 , wherein the thermoplastic polymer is a polyester, a polyurethane, a nylon, a polyimide, a polyamide, a polyether, a polystyrene, an acrylonitrile butadiene styrene (ABS), a polybutylene terephthalate (PBT), a polyacrylic, an ethylene vinyl alcohol (EVOH), a polyolefin, an ethylene propylene diene elastomer, a copolymer, blend, or combination thereof.

16 . The method of forming the composite tube of claim 13 , wherein the functional group comprises a hydroxide, a carbonyl, an alcohol, a carboxyl, a phenyl group, an amine, a diene, or combination thereof.

17 . The method of forming the composite tube of claim 13 , wherein the outer layer further comprises a catalyst, a crosslink promoter, or combination thereof.

18 . The method of forming the composite tube of claim 13 , wherein silicone polymer of the inner layer comprises a liquid silicone rubber, a high consistency rubber, or a room temperature vulcanizing silicone.

19 . The method of forming the composite tube of claim 13 , wherein the radiation source substantially cures the adhesive silicone material.

20 . The method of forming the composite tube of claim 13 , wherein the radiation source substantially crosslinks the thermoplastic polymer.

Assignees

• Saint Gobain Performance Plastics Corp

Inventors

• Nadeau Adam P
• Zhang Jianfeng

Classifications

• B32B1/08

  Tubular products · CPC title

• B29C35/0805

  using electromagnetic radiation · CPC title

• C09J119/00

  Adhesives based on rubbers, not provided for in groups C09J107/00 - C09J117/00 · CPC title

• B29K2083/00

  Use of polymers having silicon, with or without sulfur, nitrogen, oxygen, or carbon only, in the main chain, as moulding material · CPC title

• B29C47/0023

  Operations & Transport · mapped topic