US5036121A — Flame and smoke retardant cable insulation and ja…

Claim 1

Independent Claim 174 words

A low smoke and flame retardant cable comprising at least one insulated conductor said conductor being enclosed in a protective jacket and said jacket comprising: (a) 110 to 140 phr by weight of a flexibilized base polymer, said flexibilized base polymer comprising polyvinyl chloride polymerized in the presence of a flexibilizing agent selected from the group consisting of chlorinated polyethylene, copolymers of ethylene/vinyl acetate, terpolymers of ethylene/vinyl acetate/carbon monoxide and mixtures thereof, and said flexibilizing agent being soluble in vinyl chloride monomer; (b) optionally 5 to 100 phr by weight of additional flexibilizing agent; (c) 2 to 15 phr by weight of at least one lead salt stabilizer; (d) flame and/or smoke suppressing amounts of a flame and/or smoke suppressant compound selected from the group consisting of antimony trioxide, aluminum trihydrate, solid solution of zinc oxide in magnesium oxide, melamine molybdate, copper oxalate, magnesium carbonate, magnesium hydroxide, calcium carbonate, zinc borate, molybdic oxide, alumina ceramic spheres and mixtures thereof; and (e) 20 to 60 phr by weight of a brominated phthalic acid ester plasticizer,

Claim 2

Dependent Claim 174 words

A low smoke and flame retardant cable comprising at least one insulated conductor said conductor being enclosed in a protective jacket and said jacket comprising: (a) 110 to 140 phr by weight of a flexibilized base polymer, said flexibilized base polymer comprising polyvinyl chloride polymerized in the presence of a flexibilizing agent selected from the group consisting of chlorinated polyethylene, copolymers of ethylene/vinyl acetate, terpolymers of ethylene/vinyl acetate/carbon monoxide and mixtures thereof, and said flexibilizing agent being soluble in vinyl chloride monomer; (b) optionally 5 to 100 phr by weight of additional flexibilizing agent; (c) 2 to 15 phr by weight of at least one lead salt stabilizer; (d) flame and/or smoke suppressing amounts of a flame and/or smoke suppressant compound selected from the group consisting of antimony trioxide, aluminum trihydrate, solid solution of zinc oxide in magnesium oxide, melamine molybdate, copper oxalate, magnesium carbonate, magnesium hydroxide, calcium carbonate, zinc borate, molybdic oxide, alumina ceramic spheres and mixtures thereof; and (e) 20 to 60 phr by weight of a brominated phthalic acid ester plasticizer,

Claim 3

Dependent Claim 41 words

The cable of claim 1, wherein the flexibilized base polymer of said jacket composition comprises 100 phr by weight polyvinyl chloride; 10 to 35 phr by weight or said flexibilizing agent and 1 to 3 phr by weight expoxidized soybean oil.

Claim 4

Dependent Claim 35 words

The cable of claim 1, wherein the optional flexibilizing agent of said jacket composition is selected from the group consisting of chlorinated polyethylene, copolymers of ethylene/vinyl acetate, terpolymers of ethylene/vinyl acetate/carbon monoxide and mixtures thereof.

Claim 5

Dependent Claim 21 words

The cable of claim 1, wherein the chlorinated polyethylene in said jacket composition is highly branched and prepared by solution chlorination.

Claim 6

Dependent Claim 22 words

The cable of claim 1, wherein said jacket composition further comprises 1 to 150 phr of at least one smoke suppressing filler.

Claim 7

Dependent Claim 52 words

The cable of claim 1, wherein said jacket composition has a maximum rate of heat release at 10 or more min. of 100 kW/m 2 or less and a maximum rate of smoke release at 10 or more min. of 100 SMK/min.-m 2 or less as measured by the OSU RHR calorimeter.

Claim 8

Dependent Claim 69 words

The cable of claim 1, wherein the jacket composition has a cumulative heat release of 5 MJ/m 2 or less and a cumulative smoke release of 200 SMK/m 2 or less, and further having a maximum rate of heat release at 10 or more min. of 55 KW/m 2 or less and a maximum rate of smoke release at 10 or more min. of 50 SMK/min.-m 2 or less.

Claim 9

Dependent Claim 56 words

The cable of claim 1, wherein the jacket composition has a cumulative heat release of 3.5 MJ/m 2 or less, a cumulative smoke release of 100 SMK/m 2 or less, a maximum rate of heat release of 20 kW/m 2 or less and a maximum rate of smoke release of 25 SMK/m 2 -min. or less.

Claim 10

Dependent Claim 64 words

The cable of claim 1, wherein the jacket composition has a cumulative heat and smoke release at flux 70 kW/m 2 prior to 15 min. of 50 MJ/m 2 and 1100 SMK/m 2 , or less, respectively, and having a maximum rate of heat and smoke release at 2 or more min. of 75 kW/m 2 and 105 SMK/m 2 -min. or less, respectively.

Claim 11

Dependent Claim 20 words

The insulation composition of claim 1 further comprising at least one lubricant, pigment compound, filler, processing aid and mixtures thereof.

Claim 12

Dependent Claim 23 words

The cable of claim 10, wherein the jacket composition further comprises at least one lubricant, pigment compound, filler, processing aid and mixtures thereof.

Claim 13

Dependent Claim 161 words

The cable of claim 1, wherein the insulation on the insulated conductor comprises (a) 110 to 140 phr by weight of a flexibilized base polymer, said flexibilized base polymer comprising polyvinyl chloride polymerized in the presence of a flexibilizing agent selected from the group consisting of chlorinated polyethylene, copolymers of ethylene/vinyl acetate, terpolymers of ethylene/vinyl acetate/carbon monoxide and mixtures thereof, and said flexibilizing agent being soluble in vinyl chloride monomer; (b) optionally, 5 to 100 phr by weight of additional flexibilizing agent; (c) 2 to 15 phr by weight of at least one lead salt stabilizer; (d) flame and/or smoke suppressing amounts of a flame and/or smoke suppressant compound selected from the group consisting of antimony trioxide, aluminum trihydrate, solid solution of zinc oxide in magnesium oxide, melamine molybdate, copper oxalate magnesium carbonate, magnesium hydroxide, calcium carbonate, zinc borate, molybdic oxide, alumina ceramic spheres and mixtures thereof, (a) 20 to 60 phr by weight of a brominated phthalic acid ester plasticizer.

Claim 14

Dependent Claim 167 words

An insulated conductor wherein said conductor is enclosed in low smoke and flame retardant insulation and said insulation comprises: (a) 110 to 140 phr by weight of a flexibilized base polymer, said flexibilized base polymer comprising polyvinyl chloride polymerized in the presence of a flexibilizing agent selected from the group consisting of chlorinated polyethylene, copolymers of ethylene/vinyl acetate, terpolymers of ethylene/vinyl acetate/carbon monoxide and mixtures thereof, and said flexibilizing agent being soluble in vinyl chloride monomer; (b) optionally, 5 to 100 phr by weight of additional flexibilizing agent; (c) 2 to 15 phr by weight of at least one load salt stabilizer; (d) flame and/or smoke suppressing amounts of a flame and/or smoke suppressant compound selected from the group consisting of ahtlmony trioxide, aluminum trihydrate, solid solution of zinc oxide in magnesium oxide, melamine molybdate, copper oxalate, magnesium carbonate, magnesium hydroxide, calcium carbonate, zinc borate, molybidc oxide, alumina ceramic spheres and mixtures thereof; (e) 20 to 60 phr by weight of a brominated phthalic acid ester plasticizer.

Claim 15

Dependent Claim 167 words

An insulated conductor wherein said conductor is enclosed in low smoke and flame retardant insulation and said insulation comprises: (a) 110 to 140 phr by weight of a flexibilized base polymer, said flexibilized base polymer comprising polyvinyl chloride polymerized in the presence of a flexibilizing agent selected from the group consisting of chlorinated polyethylene, copolymers of ethylene/vinyl acetate, terpolymers of ethylene/vinyl acetate/carbon monoxide and mixtures thereof, and said flexibilizing agent being soluble in vinyl chloride monomer; (b) optionally, 5 to 100 phr by weight of additional flexibilizing agent; (c) 2 to 15 phr by weight of at least one load salt stabilizer; (d) flame and/or smoke suppressing amounts of a flame and/or smoke suppressant compound selected from the group consisting of ahtlmony trioxide, aluminum trihydrate, solid solution of zinc oxide in magnesium oxide, melamine molybdate, copper oxalate, magnesium carbonate, magnesium hydroxide, calcium carbonate, zinc borate, molybidc oxide, alumina ceramic spheres and mixtures thereof; (e) 20 to 60 phr by weight of a brominated phthalic acid ester plasticizer.

Claim 16

Dependent Claim 23 words

The insulated conductor of claim 1, wherein said insulation further comprises at least one lubricant, pigment compound, filler, processing aid and mixtures thereof.

Claim 17

Dependent Claim 68 words

The cable of claim 1, wherein said jacket composition is characterized by the following properties: (i) cumulative heat released at flux 20 kW/m 2 prior to 15 min. of 10 MJ/m 2 or less as measured by the OSU RHR calorimeter; and (ii) cumulative smoke released at flux 20 kW/m 2 prior to 15 min. of 400 SMK/m 2 or less as measured by the OSU RHR calorimeter.

Claim 18

Dependent Claim 41 words

The cable of claim 1 wherein the chlorinated polyethylene flexibilizing agent of said jacket composition has a chlorine content between about 28 to 38 weight percent and a Mooney viscosity (ML (1+4) at 100° C.) range between about 20 and 110.

Claim 19

Dependent Claim 29 words

The cable of claim 1, wherein the chlorinated polyethylene of said jacket composition is selected from the group consisting of heterogeneously chlorinated polyethylene, solution chlorinated polyethylene and mixtures thereof.

Claim 20

Dependent Claim 35 words

The cable of claim 12, wherein the optional flexibilizing agent or said insulation composition is selected from the group consisting of chlorinated polyethylene, copolymers of ethylene/vinyl acetate, terpolymers of ethylene/vinyl acetate/carbon monoxide and mixtures thereof.

Claim 21

Dependent Claim 41 words

The cable of claim 12, wherein the chlorinated polyethylene flexibilizing agent of said insulation composition has a chlorine content between about 28 to 38 weight percent and a Mooney viscosity (ML (1+4) at 100° C.) range between about 20 and 110.

Claim 22

Dependent Claim 29 words

The cable of claim 12, wherein the chlorinated polyethylene of said insulation composition is selected from the group consisting of heterogeneously chlorinated polyethylene, solution chlorinated polyethylene and mixtures thereof.

Claim 23

Dependent Claim 41 words

The conductor of claim 13, wherein the chlorinated polyethylene flexibilizing agent of said insulation composition has a chlorine content between about 28 to 38 weight percent and a Mooney viscosity (ML (1+4) at 100° C.) range between about 20 and 110.

Claim 24

Dependent Claim 29 words

The conductor of claim 13, wherein the chlorinated polyethylene of said insulation composition is selected from the group consisting of heterogeneously chlorinated polyethylene, solution chlorinated polyethylene and mixtures thereof.

Annuity Stage	Window Opens	Payment Deadline	Surcharge Period Until	Estimated Fee	Status
3.5 Years (Year 4)	1994-07-29	1995-01-28	1995-07-30	$2000.00	Window Closed / Lapsed
7.5 Years (Year 8)	1998-07-29	1999-01-28	1999-07-30	$3760.00	Window Closed / Lapsed
11.5 Years (Year 12)	2002-07-29	2003-01-28	2003-07-30	$7700.00	Window Closed / Lapsed

Flame and smoke retardant cable insulation and jacketing compositions

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