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US 4,670,494 AGranted
Flame retardant low smoke poly(vinyl chloride) thermoplastic composition
AssigneeGary Chemical Corp.
InventorNicholas J. Semenza, Jr.
Life of this patent
Estimating the term…
Abstract
A flame retardant low smoke PVC-based thermoplastic composition for use in wire insulation and cable jacketing is disclosed. The composition includes poly(vinyl chloride), chlorinated poly(vinyl chloride), molybdenum oxide, alumina trihydrate, and isodecyl diphenyl phosphate as its primary ingredients, and additionally includes at least one heat stabilizer, at least one antioxidant, at least one lubricant, and at least one plasticizer besides the isodecyl diphenyl phosphate. It may also include antimony oxide, fillers, and chlorinated paraffins. The composition has excellent flame retardancy and produces only a relatively small amount of light-colored smoke when burned.
Claims14
A flame retardant low smoke thermoplastic composition comprising the below-listed materials, amounts being expressed as parts per hundred of the sum of poly(vinyl chloride) and chlorinated poly(vinyl chloride) resins in the composition:
- poly(vinyl chloride), in an amount from about 50 to about 90 parts per hundred of resin;
- chlorinated poly(vinyl chloride), in an amount from about 10 to about 50 parts per hundred of resin;
- molybdenum oxide, in an amount from about 10 to about 30 parts per hundred of resin;
- alumina trihydrate, in an amount from about 10 to about 30 parts per hundred of resin;
- and
- isodecyl diphenyl phosphate, in an amount from about 5 to about 30 parts per hundred of resin;
- said thermoplastic composition also including:
- at least one heat stabilizer efficacious in PVC-based plastic materials, the total amount of said heat stabilizers in said thermoplastic composition being from about 4 to about 12 parts per hundred of resin;
- at least one antioxidant efficacious in PVC-based plastic materials, the total amount of said antioxidants in said thermoplastic composition being from about 0.05 to about 0.3 parts per hundred of resin;
- at least one lubricant efficacious in PVC-based plastic materials, the total amount of said lubricants in said thermoplastic composition being from about 0.15 to about 1.5 parts per hundred of resin;
- and
- at least one plasticizer in addition to said isodecyl diphenyl phosphate plasticizer, said additional plasticizers being efficacious in PVC-based plastic materials, the total amount of said additional plasticizers in said thermoplastic composition being from about 20 to about 120 parts per hundred of resin.
9 more elements
An insulated wire comprising:
- at least one electrically conductive wire and an insulation about said at least one wire, said insulation comprising a thermoplastic composition containing the below-listed materials, amounts being expressed as parts per hundred of the sum of poly(vinyl chloride) and chlorinated poly(vinyl chloride) resins in the composition:
- poly(vinyl chloride), in an amount from about 50 to about 90 parts per hundred of resin;
- chlorinated poly(vinyl chloride), in an amount from about 10 to about 50 parts per hundred of resin;
- molybdenum oxide, in an amount from about 10 to about 30 parts per hundred of resin;
- alumina trihydrate, in an amount from about 10 to about 30 parts per hundred of resin;
- and
- isodecyl diphenyl phosphate, in an amount from about 5 to about 30 parts per hundred of resin;
- said thermoplastic composition also including:
- at least one heat stabilizer efficacious in PVC-based plastic materials, the total amount of said heat stabilizers in said thermoplastic composition being from about 4 to about 12 parts per hundred of resin;
- at least one antioxidant efficacious in PVC-based plastic materials, the total amount of said antioxidants in said thermoplastic composition being from about 0.05 to about 0.3 parts per hundred of resin;
- at least one lubricant efficacious in PVC-based plastic materials, the total amount of said lubricants in said thermoplastic composition being from about 0.15 to about 1.5 parts per hundred of resin;
- at least one plasticizer in addition to said isodecyl diphenyl phosphate plasticizer, said additional plasticizers being efficacious in PVC-based plastic materials, the total amount of said additional plasticizers in said thermoplastic composition being from about 20 to about 120 parts per hundred of resin;
- antimony trioxide in an amount from about 0.5 to about 10 parts per hundred of resin;
- and
- at least one filler suitable for use in PVC-based plastic materials, the total amount of said fillers in said thermoplastic composition being from about 10 to about 50 parts per hundred of resin.
12 more elements
A jacketed electrical cable comprising:
- at least one electrical cable, and cable jacketing about said at least one cable, said cable jacketing comprising a thermoplastic composition containing the below-listed materials, amounts being expressed as parts per hundred of the sum of poly(vinyl chloride) and chlorinated poly(vinyl chloride) resins in the composition:
- poly(vinyl chloride), in an amount from about 50 to about 90 parts per hundred of resin;
- chlorinated poly(vinyl chloride), in an amount from about 10 to about 50 parts per hundred of resin;
- molybdenum oxide, in an amount from about 10 to about 30 parts per hundred of resin;
- alumina trihydrate, in an amount from about 10 to about 30 parts per hundred of resin;
- and
- isodecyl diphenyl phosphate, in an amount from about 5 to about 30 parts per hundred of resin;
- said thermoplastic composition also including:
- at least one heat stabilizer efficacious in PVC-based plastic materials, the total amount of said heat stabilizers in said thermoplastic composition being from about 4 to about 12 parts per hundred of resin;
- at least one antioxidant efficacious in PVC-based plastic materials, the total amount of said antioxidants in said thermoplastic composition being from about 0.05 to about 0.3 parts per hundred of resin;
- at least one lubricant efficacious in PVC-based plastic materials, the total amount of said lubricants in said thermoplastic composition being from about 0.15 to about 1.5 parts per hundred of resin;
- at least one plasticizer in addition to said isodecyl diphenyl phosphate plasticizer, said additional plasticizers being efficacious in PVC-based plastic materials, the total amount of said additional plasticizers in said thermoplastic composition being from about 20 to about 120 parts per hundred of resin;
- antimony trioxide in an amount from about 0.5 to about 10 parts per hundred of resin;
- and
- at least one chlorinated paraffin, the total amount of said chlorinated paraffins in said thermoplastic composition being from about 1 to about 10 parts per hundred of resin.
12 more elements
Dependencies are inferred from the claim text.