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US 5,858,540 AGranted
Fluororesin compositions, heat-shrinkable tubings and insulated wires employing the fluororesin compositions
AssigneeSumitomo Electric Industries, Ltd.
InventorsHiroshi Hayami, Takashi Kakihara
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Abstract
A fluororesin composition is disclosed which includes vinylidene fluoride, tetrafluoroethylene and hexafluoropropylene copolymerized in a specific proportional ratio and a multifunctional monomer as an auxiliary cross-linking agent. The composition may optionally include an organic phosphite or a light stabilizer in a predetermined proportion. A heat-shrinkable tubing made from the fluororesin composition and an insulated wire incorporating an insulation layer or an insulating coating comprised of the fluororesin composition are further disclosed.
Claims22
A fluororesin composition consisting essentially of:
- 100parts by weight of a terpolymer having three respective repetitive units of vinylidene fluoride, tetrafluoroethylene and hexafluoropropylene, said terpolymer comprising 30-50 mole % of the vinylidene fluoride, 30-50 mole % of the tetrafluoroethylene and 10-30 mole % of the hexafluoropropylene;
- and
- 0.1-10 parts by weight of a multifunctional monomer having two or more carbon-carbon unsaturated bonds in the molecule;
- wherein said terpolymer has a melting point ranging from approximately 100.degree. C. to 180.degree. C. and a heat of fusion ranging from approximately -1.0 J/g to -20 J/g, and wherein said fluororesin composition is cross-linkable to produce a heat settable and heat shrinkable fluororesin.
1 more element
A fluororesin composition consisting essentially of:
- 100 parts by weight of a terpolymer having three respective repetitive units of vinylidene fluoride, tetrafluoroethylene and hexafluoropropylene, said terpolymer comprising 30-50 mole % of the vinylidene fluoride, 30-50 mole % of the tetrafluoroethylene and 10-30 mole % of the hexafluoropropylene;
- 0.1-10 parts by weight of a multifunctional monomer having two or more carbon-carbon unsaturated bonds in the molecule;
- and
- 0.1-1.0 parts by weight of an organic phosphite;
- wherein said terpolymer has a melting point ranging from approximately 100.degree. C. to 180.degree. C. and a heat of fusion ranging from approximately -1.0 J/g to -20 J/g, and wherein said composition is cross-linkable to produce a heat settable and heat shrinkable fluororesin.
2 more elements
A fluororesin composition consisting essentially of:
- 100 parts by weight of a terpolymer having three respective repetitive units of vinylidene fluoride, tetrafluoroethylene and hexafluoropropylene, said terpolymer comprising 30-50 mole % of the vinylidene fluoride, 30-50 mole % of the tetrafluoroethylene and 10-30 mole % of the hexafluoropropylene;
- 0.1-10 parts by weight of a multifunctional monomer having two or more carbon-carbon unsaturated bonds in the molecule;
- and
- a light stabilizer;
- wherein said terpolymer has a melting point ranging from approximately 100.degree. C. to 180.degree. C. and a heat of fusion ranging from approximately -1.0 J/g to -20 J/g, and wherein said composition is cross-linkable to produce a heat settable and heat shrinkable fluororesin.
2 more elements
A fluororesin composition consisting essentially of:
- 100 parts by weight of a terpolymer having three respective repetitive units of vinylidene fluoride, tetrafluoroethylene and hexafluoropropylene, said terpolymer comprising 30-50 mole % of the vinylidene fluoride, 30-50 mole % of the tetrafluoroethylene and 10-30 mole % of the hexafluoropropylene;
- and
- 0.1-10 parts by weight of a multifunctional monomer having two or more carbon-carbon unsaturated bonds in the molecule;
- and
- a vulcanizing accelerator;
- wherein said terpolymer has a melting point ranging from approximately 100.degree. C. to 180.degree. C. and a heat of fusion ranging from approximately -1.0 J/g to -20 J/g, wherein said composition is cross-linkable to produce a heat settable and heat shrinkable fluororesin.
3 more elements
A fluororesin composition consisting essentially of:
- 100 parts by weight of a terpolymer having three respective repetitive units of vinylidene fluoride, tetrafluoroethylene and hexafluoropropylene, said terpolymer comprising 30-50 mole % of the vinylidene fluoride, 30-50 mole % of the tetrafluoroethylene and 10-30 mole % of the hexafluoropropylene;
- 0.1-10 parts by weight of a multifunctional monomer having two or more carbon-carbon unsaturated bonds in the molecule;
- and
- a hydrofluoric acid scavenger;
- wherein said terpolymer has a melting point ranging from approximately 100.degree. C. to 180.degree. C. and a heat of fusion ranging from approximately -1.0 J/g to -20 J/g, wherein said composition is cross-linkable to produce a heat settable and heat shrinkable fluororesin.
2 more elements
A fluororesin composition consisting essentially of:
- 100 parts by weight of a terpolymer having three respective repetitive units of vinylidene fluoride, tetrafluoroethylene and hexafluoropropylene, said terpolymer comprising 30-50 mole % of the vinylidene fluoride, 30-50 mole % of the tetrafluoroethylene and 10-30 mole % of the hexafluoropropylene;
- and
- 0.1-10 parts by weight of a multifunctional monomer having two or more carbon-carbon unsaturated bonds in the molecule;
- a vulcanizing accelerator;
- and
- a hydrofluoric acid scavenger;
- wherein said terpolymer has a melting point ranging from approximately 100.degree. C. to 180.degree. C. and a heat of fusion ranging from approximately -1.0 J/g to -20 J/g, and wherein said composition is cross-linkable to produce a heat settable and heat shrinkable fluororesin.
4 more elements
A fluororesin composition comprising:
- 100 parts by weight of a terpolymer having three respective repetitive units of vinylidene fluoride, tetrafluoroethylene and hexafluoropropylene, said terpolymer comprising 40 mole % of the vinylidene fluoride, 40 mole % of the tetrafluoroethylene and 20 mole % of the hexafluoropropylene;
- and
- 0.1-10 parts by weight of a multifunctional monomer having two or more carbon-carbon unsaturated bonds in the molecule;
- wherein said terpolymer has a melting point ranging from approximately 100.degree. C. to 180.degree. C. and a heat of fusion ranging from approximately -1.0 J/g to -20 J/g, and wherein said composition is cross-linkable to produce a heat settable and heat shrinkable fluororesin.
1 more element
Dependencies are inferred from the claim text.