US2004197568A1PendingUtilityA1

Fluoropolymer bonding

42
Assignee: 3M INNOVATIVE PROPERTIES COPriority: May 21, 2001Filed: Apr 16, 2004Published: Oct 7, 2004
Est. expiryMay 21, 2021(expired)· nominal 20-yr term from priority
Inventors:Naiyong JingAndrew M. HineWilliam J. SchultzTrang D. PhamChristopher A. Haak
Y10T428/31699C08J 5/124Y10T428/31667Y10T428/31649Y10T428/31544Y10T428/3154C08J 2327/12Y10T428/31663
42
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Claims

Abstract

A multi-layer structure includes a fluoropolymer bonded to a substrate. The structure is prepared by heating a bonding composition to form the bond. The bonding composition includes an amino-substituted organosilane. The bonding composition includes non-adhesive materials.

Claims

exact text as granted — not AI-modified
What is claimed is:  
     
         1 . A method of bonding a fluoropolymer to a substrate comprising: 
 providing a bonding composition including an amino-substituted organosilane between a fluoropolymer and a substrate to form a primed article; and    heating the primed article to a temperature for a sufficient time to bond the fluoropolymer and the substrate to form a bonded article.    
     
     
         2 . The method of  claim 1 , wherein providing includes treating a surface of the fluoropolymer with the bonding composition and contacting the treated surface of the fluoropolymer with a surface of the substrate.  
     
     
         3 . The method of  claim 1 , wherein providing includes treating a surface of the substrate with the bonding composition and contacting the treated surface of the substrate with a surface of the fluoropolymer.  
     
     
         4 . The method of  claim 1 , wherein providing includes extruding a mixture of the fluoropolymer and the bonding composition and contacting a surface of the extruded mixture with a surface of the substrate.  
     
     
         5 . The method of  claim 1 , wherein the substrate includes an inorganic substrate.  
     
     
         6 . The method of  claim 5 , wherein the inorganic substrate includes a metal or a glass.  
     
     
         7 . The method of  claim 1 , wherein the substrate includes an organic substrate.  
     
     
         8 . The method of  claim 7 , wherein the organic substrate includes a non-fluorinated polymer.  
     
     
         9 . The method of  claim 1 , wherein the fluoropolymer includes a polymer derived from a monomer selected from the group consisting of a vinylidene fluoride monomer, and ethylene combined with a comonomer, the comonomer being selected from the group consisting of tetrafluoroethylene, hexafluoropropylene, chlorotrifluoroethylene, 3-chloropentafluoropropene, a perfluorinated vinyl ether, vinyl fluoride and a fluorine-containing diolefin.  
     
     
         10 . The method of  claim 1 , wherein the amino-substituted organosilane has a hydrolyzable substituent.  
     
     
         11 . The method of  claim 1 , wherein the amino-substituted organosilane is selected from the group consisting of 3-aminopropyltrimethoxysilane, 3-aminopropyltriethoxysilane, (aminoethylaminomethyl)phenethyltrimethoxysilane, (aminoethylaminomethyl)phenethyltriethoxysilane, N-(2-aminoethyl)-3-aminopropylmethyldimethoxysilane, N-(2-aminoethyl)-3-aminopropyltris(2-ethylhexoxy)silane, 6-(aminohexylaminopropyl)trimethoxysilane, 4-aminobutyltrimethoxysilane, 4-aminobutyltriethoxysilane, p-aminophenyltrimethoxysilane, 3-(1-aminopropoxy)-3,3,-dimethyl-1-propenyltrimethoxysilane, 3-aminopropyltris(methoxyethoxyethoxy)silane, 3-aminopropylmethyldiethoxysilane, 3-aminopropyltrimethoxysilane, and aminoundecyltrimethoxysilane.  
     
     
         12 . The method of  claim 1 , wherein the bonding composition includes a phase transfer catalyst or an acid catalyst.  
     
     
         13 . The method of  claim 12 , wherein the phase transfer catalyst or acid catalyst is selected from the group consisting of a phosphonium salt, an ammonium salt, a fluoroaliphatic sulfonyl compound, a perfluoroalkylcarboxylic acid, and an arylcarboxylic acid.  
     
     
         14 . The method of  claim 1 , wherein the primed article is heated to a temperature between 50 and 300° C.  
     
     
         15 . The method of  claim 1 , wherein the primed article is heated to a temperature between 75 and 250° C.  
     
     
         16 . The method of  claim 1 , further comprising applying pressure to the primed article.  
     
     
         17 . A method of bonding a fluoropolymer to a substrate comprising: 
 treating a surface of the fluoropolymer with a bonding composition including an amino-substituted organosilane having a hydrolyzable substituent;    contacting the treated surface of the fluoropolymer with a surface of a substrate; and    heating the contacted surfaces to a temperature for a sufficient time to bond the fluoropolymer and the substrate to form a bonded article.    
     
     
         18 . The method of  claim 17 , wherein the substrate includes an inorganic substrate.  
     
     
         19 . The method of  claim 18 , wherein the inorganic substrate includes a metal or a glass.  
     
     
         20 . The method of  claim 17 , wherein the substrate includes an organic substrate.  
     
     
         21 . The method of  claim 20 , wherein the organic substrate includes a non-fluorinated polymer.  
     
     
         22 . The method of  claim 17 , wherein the fluoropolymer includes a polymer derived from a monomer selected from the group consisting of a vinylidene fluoride monomer, and ethylene combined with a comonomer, the comonomer being selected from the group consisting of tetrafluoroethylene, hexafluoropropylene, chlorotrifluoroethylene, 3-chloropentafluoropropene, a perfluorinated vinyl ether, vinyl fluoride and a fluorine-containing diolefin.  
     
     
         23 . The method of  claim 17 , wherein the amino-substituted organosilane is selected from the group consisting of 3-aminopropyltrimethoxysilane, 3-aminopropyltriethoxysilane, (aminoethylaminomethyl)phenethyltrimethoxysilane, (aminoethylaminomethyl)phenethyltriethoxysilane, N-(2-aminoethyl)-3-aminopropylmethyldimethoxysilane, N-(2-aminoethyl)-3-aminopropyltris(2-ethylhexoxy)silane, 6-(aminohexylaminopropyl)trimethoxysilane, 4-aminobutyltrimethoxysilane, 4-aminobutyltriethoxysilane, p-aminophenyltrimethoxysilane, 3-(1-aminopropoxy)-3,3,-dimethyl-1-propenyltrimethoxysilane, 3-aminopropyltris(methoxyethoxyethoxy)silane, 3-aminopropylmethyldiethoxysilane, 3-aminopropyltrimethoxysilane, and aminoundecyltrimethoxysilane.  
     
     
         24 . The method of  claim 17 , wherein the bonding composition includes a phase transfer catalyst or an acid catalyst.  
     
     
         25 . The method of  claim 24 , wherein the phase transfer catalyst or acid catalyst is selected from the group consisting of a phosphonium salt, an ammonium salt, a fluoroaliphatic sulfonyl compound, a perfluoroalkylcarboxylic acid, and an arylcarboxylic acid.  
     
     
         26 . The method of  claim 17 , wherein the contacted surfaces is heated to a temperature between 50 and 300° C.  
     
     
         27 . The method of  claim 17 , wherein the contacted surfaces is heated to a temperature between 75 and 250° C.  
     
     
         28 . The method of  claim 17 , wherein contacting includes applying pressure.  
     
     
         29 . The method of  claim 4 , wherein the amino-substituted organosilane has a hydrolyzable substituent.  
     
     
         30 . The method of  claim 29 , wherein the substrate includes an inorganic substrate.  
     
     
         31 . The method of  claim 29 , wherein the inorganic substrate includes a metal or a glass.  
     
     
         32 . The method of  claim 29 , wherein the substrate includes an organic substrate.  
     
     
         33 . The method of  claim 32 , wherein the organic substrate includes a non-fluorinated polymer.  
     
     
         34 . The method of  claim 29 , wherein the fluoropolymer includes a polymer derived from a monomer selected from the group consisting of a vinylidene fluoride monomer, and ethylene combined with a comonomer, the comonomer being selected from the group consisting of tetrafluoroethylene, hexafluoropropylene, chlorotrifluoroethylene, 3-chloropentafluoropropene, a perfluorinated vinyl ether, vinyl fluoride and a fluorine-containing diolefin.  
     
     
         35 . The method of  claim 29 , wherein the amino-substituted organosilane is selected from the group consisting of 3-aminopropyltrimethoxysilane, 3-aminopropyltriethoxysilane, (aminoethylaminomethyl)phenethyltrimethoxysilane, (aminoethylaminomethyl)phenethyltriethoxysilane, N-(2-aminoethyl)-3-aminopropylmethyldimethoxysilane, N-(2-aminoethyl)-3-aminopropyltris(2-ethylhexoxy)silane, 6-(aminohexylaminopropyl)trimethoxysilane, 4-aminobutyltrimethoxysilane, 4-aminobutyltriethoxysilane, p-aminophenyltrimethoxysilane, 3-(1-aminopropoxy)-3,3,-dimethyl-1-propenyltrimethoxysilane, 3-aminopropyltris(methoxyethoxyethoxy)silane, 3-aminopropylmethyldiethoxysilane, 3-aminopropyltrimethoxysilane, and aminoundecyltrimethoxysilane.  
     
     
         36 . The method of  claim 29 , wherein the bonding composition includes a phase transfer catalyst or an acid catalyst.  
     
     
         37 . The method of  claim 36 , wherein the phase transfer catalyst or acid catalyst is selected from the group consisting of a phosphonium salt, an ammonium salt, a fluoroaliphatic sulfonyl compound, a perfluoroalkylcarboxylic acid, and an arylcarboxylic acid.  
     
     
         38 . The method of  claim 29 , wherein the contacted surfaces is heated to a temperature between 50 and 300° C.  
     
     
         39 . The method of  claim 29 , wherein the contacted surfaces is heated to a temperature between 75 and 250° C.  
     
     
         40 . The method of  claim 29 , wherein contacting includes applying pressure.

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