Noninflammable olefin fibers and method of producing same

Claim 2

Noninflammable olefinic-resin fibers, which fibers contain in combination as fire-retardant agents: (a) from about 0.5% to 15% by weight of a hydrated alumina, which alumina has been treated to permit the alumina to be incorporated into the olefinic-resin composition from which the fibers are produced; (b) from about 0.5% to 8.0% by weight of a halogenated organic compound selected from the group consisting of (i) a polyhalo cyclohexane, and (ii) a polyhalo diphenyl oxide; (c) from about 0.5% to 8.0% by weight of ammonium polyphosphate; and (d) the olefinic fibers being noninflammable when tested by ASTM-D635-74.

Claim 3

The fibers of claim 1 wherein the hydrated alumina has been treated with an organic vinyl tris beta methoxyethoxy silane material having terminal vinyl groups.

Claim 4

The fibers of claim 1 wherein the halogenated compound is penta to deca bromo diphenyl oxide.

Claim 5

The fibers of claim 1 wherein the halogenated compound is a penta to deca bromochloro cyclohexane.

Claim 6

The fibers of claim 1 wherein the fibers contain a small amount of an ethylene-vinyl-acetate resin as a support resin for the flame-retardant agent.

Claim 7

The fibers of claim 1 wherein the olefinic resin is selected from the group consisting of a polypropylene and a polyethylene resin.

Claim 8

The fibers of claim 1 wherein the fire-retardant agents comprise in combination from about 3% to 6% by weight of the fibers.

Claim 9

The fibers of claim 1 wherein the hydrated alumina comprises from about 2.0% to 8.0% by weight, the halogenated compound comprises from about 1.0% to 5.0% by weight, and the ammonium polyphosphate comprises from about 1.0% to 5.0% by weight.

Claim 10

The fibers of claim 1 wherein the hydrated alumina comprises an organic silane-treated hydrated alumina.

Claim 11

The fibers of claim 1 wherein the halogenated organic compound is selected from the group of chloro and bromo compounds or combinations thereof.

Claim 12

Noninflammable olefinic-resin fibers, which fibers contain in combination as fire-retardant agents: (a) from about 0.5% to 15% by weight of a hydrated alumina, which alumina has been treated to permit the alumina to be incorporated into the olefinic-resin composition from which the fibers are produced; (b) from about 0.5% to 8.0% by weight of a polybromo diphenyl oxide; (c) from about 0.5% to 8.0% by weight of ammonium polyphosphate; and (d) the olefinic fibers being noninflammable when tested by ASTM-D365-74.

Claim 13

Noninflammable olefinic-resin fibers, which fibers contain in combination as fire-retardant agents: (a) from about 0.5% to 15% by weight of a hydrated alumina, which alumina has been treated to permit the alumina to be incorporated into the olefinic-resin composition from which the fibers are produced; (b) from about 0.5% to 8.0% by weight of a polybromo diphenyl oxide; (c) from about 0.5% to 8.0% by weight of ammonium polyphosphate; and (d) the olefinic fibers being noninflammable when tested by ASTM-D365-74.

Claim 14

The fibers of claim 1 wherein the hydrated alumina is present in an amount of from about 2.0% to 8.0% by weight.

Claim 15

The fibers of claim 1 wherein the hydrated alumina has been treated with an organic silane material having terminal vinyl groups.

Claim 16

The fibers of claim 13 wherein the silane material is vinyl tris beta methoxy-ethoxy silane.

Claim 17

The fibers of claim 1 wherein the halogenated compound is present in an amount of from about 1.0% to 5.0% by weight.

Claim 18

The fibers of claim 1 wherein the halogenated compound is penta to deca bromo diphenyl oxide.

Claim 19

The fibers of claim 1 wherein the ammonium polyphosphate is present in an amount of from about 1.0% to 5.0% by weight.

Claim 20

The fibers of claim 1 wherein the fibers contain from 0.01% to 1% by weight of the fibers of an ethylene-vinyl-acetate resin as a support resin for the flame-retardant agent.

Claim 21

The fibers of claim 1 wherein the fibers include from about 0.01% to 1.0% by weight of a thermal stabilizer phosphonite compound for the olefinic resin.

Claim 22

The fibers of claim 1 wherein the olefinic resin is selected from the group consisting of a polypropylene and a polyethylene resin. PG,22

Claim 23

The fibers of claim 1 wherein the fire-retardant agents comprise in combination from about 3% to 6% by weight of the fibers.

Claim 24

Noninflammable, polypropylene and polyethylene olefinic-resin fibers, which fibers contain in combination as fire-retardant agents: (a) from about 0.5% to 15% by weight of a hydrated alumina, which alumina has been treated with an organic silane material having terminal vinyl groups, to permit the alumina to be incorporated into the olefinic-resin composition from which the fibers are produced; (b) from about 0.5% to 8.0% by weight of a polybromo diphenyl oxide; (c) from about 0.5% to 8.0% by weight of ammonium polyphosphate; and (d) the olefinic fibers being noninflammable when tested by ASTM-D635-74.

Claim 25

Noninflammable, polypropylene and polyethylene olefinic-resin fibers, which fibers contain in combination as fire-retardant agents: (a) from about 0.5% to 15% by weight of a hydrated alumina, which alumina has been treated with an organic silane material having terminal vinyl groups, to permit the alumina to be incorporated into the olefinic-resin composition from which the fibers are produced; (b) from about 0.5% to 8.0% by weight of a polybromo diphenyl oxide; (c) from about 0.5% to 8.0% by weight of ammonium polyphosphate; and (d) the olefinic fibers being noninflammable when tested by ASTM-D635-74.

Claim 26

The fibers of claim 22 wherein the fibers include from about 0.01% to 1.0% by weight of a thermal stabilizer phosphonite compound for the olefinic resin.

Claim 27

A process for the production of noninflammable, thermoplastic, olefinic textile fibers, which process comprises: (a) admixing into an olefinic-polymer composition, adapted to prepare textile fibers, an additive composition, which additive composition comprises in combination as active ingredients (i) from about 0.5% to 15% by weight of a hydrated alumina, which alumina has been treated to permit the alumina to be incorporated into the olefinic-resin composition from which the fibers are produced, (ii) from about 0.5% to 8.0% by weight of a polybromo diphenyl oxide, and (iii) from about 0.5% to 8.0% by weight of ammonium polyphosphate; and (b) forming the thermoplastic polymer composition containing the additive composition into a noninflammable textile fiber which is noninflammable when tested by ASTM-D635-74.

Claim 28

A process for the production of noninflammable, thermoplastic, olefinic textile fibers, which process comprises: (a) admixing into an olefinic-polymer composition, adapted to prepare textile fibers, an additive composition, which additive composition comprises in combination as active ingredients (i) from about 0.5% to 15% by weight of a hydrated alumina, which alumina has been treated to permit the alumina to be incorporated into the olefinic-resin composition from which the fibers are produced, (ii) from about 0.5% to 8.0% by weight of a polybromo diphenyl oxide, and (iii) from about 0.5% to 8.0% by weight of ammonium polyphosphate; and (b) forming the thermoplastic polymer composition containing the additive composition into a noninflammable textile fiber which is noninflammable when tested by ASTM-D635-74.

Claim 29

The process of claim 24 wherein the olefinic resin is selected from the group consisting of polyethylene and polypropylene.

Claim 30

The process of claim 22 wherein the additive composition includes a small, but effective, amount of a thermal stabilizer phosphonite compound for the olefinic resin.

Claim 31

The process of claim 24 wherein the additive master-batch composition contains from about 5% to 80% by weight of an ethylene-vinyl-acetate support resin in which the additives are dispersed.

Claim 32

The process of claim 24 which includes extruding the olefinic-resin composition into fibers at a temperature of about 220° C. or less.

Claim 33

The process of claim 24 wherein the fire-retardant agents comprise in combination from about 3% to 6% by weight of the fibers.