A multi-layer article featuring a fluoroplastic layer bonded to a non-fluorinated polymer layer in which the fluoroplastic has a melting point of at least 200Â C. and contains interpolymerized units of at least TFE and VDF, the amount of VDF being at least 0. 1% by weight, but less than than 20% by weight. Also useful are fluoroplastics containing at least TFE and VDF in which the amount of VDF units is between 0. 1 and 15% by weight. Such polymers may optionally have melting points greater than 200Â C.
Adhesion And Bonding Of Multi-Layer Articles Including A Fluoropolymer Layer
A multi-layer article includes a first polymer layer, a substrate, and a bonding layer on a surface of the first polymer layer and in contact with the substrate.
Process For Preparing A Multi-Layer Article Having A Fluoroplastic Layer And An Elastomer Layer
Tatsuo Fukushi - Woodbury MN Robert E. Kolb - Afton MN Craig R. Hoff - Champlin MN Steven J. Wellner - Afton MN Attila Molnar - Vadnais Heights MN
Assignee:
3M Innovative Properties Company - St. Paul MN
International Classification:
B05D 138
US Classification:
427379, 4273855, 4274071
Abstract:
A method for enhancing the bond strength between a VDF-containing fluoroplastic layer and an elastomer layer of a multi-layer article. A VDF-containing fluoroplastic composition is applied to the surface of a precursor article that includes a curable elastomer layer to form a fluoroplastic layer. Prior to application of the fluoroplastic composition, the curable elastomer layer is thermally insulated to prevent it from undergoing substantial heating. Following application, the fluoroplastic layer is heated and the curable elastomer layer is cured (e. g. , thermally cured). Preferably, the elastomer cure occurs separately from and subsequent to heating the fluoroplastic layer. The combination of thermally insulating the curable elastomer layer prior to application of the fluoroplastic composition and heating the fluoroplastic layer following application of the fluoroplastic composition results in formation of a strong bond between the fluoroplastic and elastomer layers upon cure.
Naiyong Jing - Woodbury MN, US Tatsuo Fukushi - Woodbury MN, US Attila Molnar - Vadnais Heights MN, US David B. Bilbrey - Woodbury MN, US Mark W. Muggli - West St. Paul MN, US Andrew M. Hine - St. Paul MN, US Kathryn M. Spurgeon - River Falls WI, US Christopher A. Haak - Oakdale MN, US
Disclosed are various fluoropolymer blend combinations and multilayer articles comprising a blend in a first layer and a second layer comprising a polymer bonded to the first layer. The invention also provides an article comprising a first layer comprising a blend of two or more fluoropolymers, and a second layer bonded to the first layer, the second layer comprising a partially-fluorinated thermoplastic polymer, a perfluorinated thermoplastic polymer, or a combination thereof. The invention also provides an article comprising a first layer comprising a blend of two or more fluoropolymers, at least one of which comprises a partially-fluorinated thermoplastic polymer, and optionally at least one perhalogenated polymer, and a second layer bonded to the first layer, the second layer comprising an at least partially-fluorinated thermoplastic polymer. The invention also provides processes for preparing blended fluoropolymers and multilayer articles comprising a fluoropolymer layer.
Fluoroelastomers Having Low Temperature Characteristics And Solvent Resistance
Harald Kaspar - Burgkirchen, DE Klaus Hintzer - Kastl, DE Guy van Gool - Melsele, BE Franz März - Burgkirchen, DE Allan T. Worm - North St. Paul MN, US Tatsuo Fukushi - Woodbury MN, US
Assignee:
3M Innovative Properties Company - St. Paul MN
International Classification:
C08F214/22
US Classification:
526255, 526242, 526247, 526250
Abstract:
The present invention is based on quad-fluoropolymer suitable for the preparation of a fluoroelastomer. The fluoropolymer comprises repeating units derived from 10 to 40 mol % of tetrafluoroethylene, 40 to 65 mol % of vinylidene fluoride, 1 to 30 mol % of a perfluorinated vinyl ether of the formula CF═CFOCFCFCFOCF, 1 to 20 mol % of perfluoromethyl vinylether.
Pressure Sensitive Adhesive Sheet And Production Method Thereof
A fluorine-containing material substrate having coated thereon a pressure sensitive adhesive is irradiated with an electron beam, forming a chemical bond between substrate and the pressure sensitive adhesive. Furthermore the pressure sensitive adhesive can be cured by polymerization and also the substrate can be crosslinked.
Fluoroelastomer Copolymer Based On Tetrafluoroethylene, Chlorotrifluoroethylene, Hexafluoropropylene And Vinylidene Fluoride
Harald Kaspar - Burgkirchen, DE Lisa P. Chen - St. Paul MN, US Klaus Hintzer - Kastl, DE Gernot Löhr - Burgkirchen, DE Tatsuo Fukushi - Woodbury MN, US Erik Vermeulen - Beveren, BE
Assignee:
3M Innovative Properties Company - St. Paul MN
International Classification:
C08F012/20
US Classification:
526249, 526 86, 5253263
Abstract:
A fluoropolymer suitable for the preparation of a fluoroelastomer. The fluoropolymer generally includes repeating units derived from the monomers tetrafluoroethylene, hexafluoropropylene, vinylidene fluoride, chlorotrifluoroethylene and optionally one or more repeating units from fluorinated monomers other than tetrafluoroethylene, hexafluoropropylene, vinylidene fluoride and chlorotrifluoroethylene.
Ludo Govaerts - Ranst, BE Dirk H. Arren - Schoten, BE Tatsuo Fukushi - Woodbury MN, US William D. Coggio - Hudson WI, US Klaus Hintzer - Kastl, DE Harald Kaspar - Burgkirchen, DE
Assignee:
3M Innovative Properties Company - St. Paul MN
International Classification:
C08L027/22 C08F008/06 C08F008/12 C08F008/42
US Classification:
5253263, 1043262, 104343, 104370, 104384, 104387
Abstract:
The present invention comprises a substrate having a fluoropolymer on at least one of its surfaces wherein one of the substrates or the fluoropolymer comprises a hydride function MH wherein M is Si, Ge, Sn or Pb. The invention further comprises articles comprising the substrate and fluoropolymer; a method of bonding the fluoropolymer to the substrate; a fluoropolymer composition that contains the fluoropolymer, a polyhydroxy cure composition, and an organic composition comprising the hydride function MH; a premix that contains the fluoropolymer and the hydride function MH; and a fluoropolymer composition that comprises (a) a thermoplastic fluoropolymer comprising Cl, Brand/or I atoms and (b) an organic compound that comprises the hydride function MH.