US4111905A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flame retarding agents and polymer compositions containing same
Assignee: Arkema Inc
•
Filing: 1977-01-28
•
Granted: 1978-09-05
•
Expires: 1997-01-28
Abstract
Abstract The flame retardancy imparted to synthetic organic polymers by a halogen source is significantly increased by the presence of zinc sulfide in the polymer composition. One or more specified basic compounds are optionally included to neutralize any acidic materials generated during pyrolysis of the polymer composition.
Inventors
- 👤 William A. Larkin
- 👤 Irving Touval
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 17:16
CPC Classifications
C; C08; C08K; C08K3/00; C08K3/30
Claims Analysis
Total Claims: 23
Claim 1
Independent Claim
189 words
A flame retardant halogen-containing polymer composition comprising (1) a polymer selected from the group consisting of (a) polymers wherein at least a portion of the repeating units are derived from a halogen-containing monomer selected from the group consisting of ethylenically unsaturated compounds, (b) halogen-containing polyesters derived from the reaction of at least one dicarboxylic acid containing from 4 to 20 carbon atoms with at least one diol containing from 2 to 20 carbon atoms, (c) non-halogen-containing polymers wherein the repeating units are derived from at least one ethylenically unsaturated compound and (d) non-halogen-containing condensation polymers selected from the group consisting of polyesters, polyamides, polycarbonates, epoxide polymers and non-cellular polyurethanes, wherein any non-halogen-containing polymer is present in combination with an organic halogen-containing compound, the halogen content of any polymer composition is from 7 to 40% chlorine or 3 to 20% bromine, based on the weight of said polymer and said halogen is chlorine or bromine, (2) from 0.3 to 50%, based on the weight of said polymer, of zinc sulfide, and (3) a basic compound selected from the group consisting of magnesium hydroxide, calcium hydroxide, barium sulfate and hydrated alumina.
Claim 2
Dependent Claim
189 words
A flame retardant halogen-containing polymer composition comprising (1) a polymer selected from the group consisting of (a) polymers wherein at least a portion of the repeating units are derived from a halogen-containing monomer selected from the group consisting of ethylenically unsaturated compounds, (b) halogen-containing polyesters derived from the reaction of at least one dicarboxylic acid containing from 4 to 20 carbon atoms with at least one diol containing from 2 to 20 carbon atoms, (c) non-halogen-containing polymers wherein the repeating units are derived from at least one ethylenically unsaturated compound and (d) non-halogen-containing condensation polymers selected from the group consisting of polyesters, polyamides, polycarbonates, epoxide polymers and non-cellular polyurethanes, wherein any non-halogen-containing polymer is present in combination with an organic halogen-containing compound, the halogen content of any polymer composition is from 7 to 40% chlorine or 3 to 20% bromine, based on the weight of said polymer and said halogen is chlorine or bromine, (2) from 0.3 to 50%, based on the weight of said polymer, of zinc sulfide, and (3) a basic compound selected from the group consisting of magnesium hydroxide, calcium hydroxide, barium sulfate and hydrated alumina.
Claim 3
Dependent Claim
25 words
A flame retardant composition as set forth in claim 1 wherein the polymer is derived at least in part from a halogen-containing ethylenically unsaturated compound.
Claim 4
Dependent Claim
19 words
A flame retardant composition as set forth in claim 2 wherein said ethylenically unsaturated compound is a vinyl halide.
Claim 5
Dependent Claim
25 words
A flame retardant composition according to claim 1 wherein said composition contains from 1 to 10%, based on the weight of polymer, of antimony trioxide.
Claim 6
Dependent Claim
36 words
A flame retardant composition according to claim 1 wherein the polymer does not contain halogen and is selected from the group consisting of polyolefins, polystyrene and copolymers of acrylonitrile with at least one ethylenically unsaturated hydrocarbon.
Claim 7
Dependent Claim
13 words
A flame retardant composition according to claim 5 wherein the polyolefin is polypropylene.
Claim 8
Dependent Claim
20 words
A flame retardant composition according to claim 5 wherein the acrylonitrile copolymer is a terpolymer of acrylonitrile, butadiene and styrene.
Claim 9
Dependent Claim
17 words
A flame retardant composition according to claim 1 wherein said composition is coated on a flammable substrate.
Claim 10
Independent Claim
235 words
A method for imparting flame retardancy to halogen-containing polymer compositions wherein the polymer is selected from the group consisting of (a) polymers wherein at least a portion of the repeating units are derived from a halogen-containing monomer selected from the group consisting of ethylenically unsaturated compounds, (b) halogen-containing polyesters derived from the reaction of at least one dicarboxylic acid containing from 4 to 20 carbon atoms with at least one diol containing from 2 to 20 carbon atoms, (b) non-halogen-containing polymers wherein the repeating units are derived from at least one ethylenically unsaturated compound and (c) non-halogen-containing condensation polymers selected from the group consisting of polyesters, polyamides, polycarbonates, epoxide polymers and non-cellular polyurethanes, wherein any non-halogen-containing polymer is present in the polymer composition in combination with a quantity of an organic halogen-containing compound, the halogen content of any polymer composition is from 7 to 40% chlorine or 3 to 20% bromine, based on the weight of polymer, and the halogen is chlorine or bromine, and wherein said method consists essentially of combining the halogen-containing polymer composition with (1) from 0.3 to 50%, based on the weight of said halogen-containing or non-halogen-containing polymer, of zinc sulfide, and (2) an amount of a basic material sufficient to react with acidic compounds generated during the pyrolysis of said compositions, said basic material being selected from the group consisting of magnesium hydroxide, calcium hydroxide, barium sulfate and hydrated alumina.
Claim 11
Independent Claim
235 words
A method for imparting flame retardancy to halogen-containing polymer compositions wherein the polymer is selected from the group consisting of (a) polymers wherein at least a portion of the repeating units are derived from a halogen-containing monomer selected from the group consisting of ethylenically unsaturated compounds, (b) halogen-containing polyesters derived from the reaction of at least one dicarboxylic acid containing from 4 to 20 carbon atoms with at least one diol containing from 2 to 20 carbon atoms, (b) non-halogen-containing polymers wherein the repeating units are derived from at least one ethylenically unsaturated compound and (c) non-halogen-containing condensation polymers selected from the group consisting of polyesters, polyamides, polycarbonates, epoxide polymers and non-cellular polyurethanes, wherein any non-halogen-containing polymer is present in the polymer composition in combination with a quantity of an organic halogen-containing compound, the halogen content of any polymer composition is from 7 to 40% chlorine or 3 to 20% bromine, based on the weight of polymer, and the halogen is chlorine or bromine, and wherein said method consists essentially of combining the halogen-containing polymer composition with (1) from 0.3 to 50%, based on the weight of said halogen-containing or non-halogen-containing polymer, of zinc sulfide, and (2) an amount of a basic material sufficient to react with acidic compounds generated during the pyrolysis of said compositions, said basic material being selected from the group consisting of magnesium hydroxide, calcium hydroxide, barium sulfate and hydrated alumina.
Claim 12
Dependent Claim
21 words
A method according to claim 9 wherein said polymer is derived at least in part from a halogen-containing ethylenically unsaturated compound.
Claim 13
Dependent Claim
15 words
A method according to claim 10 wherein said ethylenically unsaturated compound is a vinyl halide.
Claim 14
Dependent Claim
13 words
A method according to claim 11 wherein said vinyl halide is vinyl chloride.
Claim 15
Dependent Claim
23 words
A method according to claim 9 wherein said composition contains from 1 to 10%, based on the weight of polymer, of antimony trioxide.
Claim 16
Dependent Claim
34 words
A method according to claim 9 wherein the polymer does not contain halogen and is selected from the group consisting of polyolefins, polystyrene and copolymers of acrylonitrile with at least one ethylenically unsaturated hydrocarbon.
Claim 17
Dependent Claim
11 words
A method according to claim 14 wherein the polyolefin is polypropylene.
Claim 18
Dependent Claim
18 words
A method according to claim 14 wherein the acrylonitrile copolymer is a terpolymer of acrylonitrile, butadiene and styrene.
Claim 19
Dependent Claim
80 words
A flame retarding agent for synthetic organic polymers comprising zinc sulfide, a basic compound selected from the group consisting of magnesium hydroxide, calcium hydroxide, barium sulfate and hydrated alumina, and an amount of an organic halogen source equivalent to from 2 to 10 moles of halogen per mole of zinc sulfide, wherein said halogen source is selected from the group consisting of halogen-containing hydrocarbons and halogen-containing esters of phosphoric and phosphorus acids and wherein said halogen is chlorine or bromine.
Claim 20
Dependent Claim
80 words
A flame retarding agent for synthetic organic polymers comprising zinc sulfide, a basic compound selected from the group consisting of magnesium hydroxide, calcium hydroxide, barium sulfate and hydrated alumina, and an amount of an organic halogen source equivalent to from 2 to 10 moles of halogen per mole of zinc sulfide, wherein said halogen source is selected from the group consisting of halogen-containing hydrocarbons and halogen-containing esters of phosphoric and phosphorus acids and wherein said halogen is chlorine or bromine.
Claim 21
Dependent Claim
18 words
A flame retarding agent according to claim 17 wherein the organic halogen source is a halogen-containing bicyclic hydrocarbon.
Claim 22
Dependent Claim
25 words
A flame retarding agent according to claim 17 wherein said basic compound is barium sulfate and is present in combination with zinc sulfide as lithopone.
Claim 23
Dependent Claim
31 words
A flame retarding agent according to claim 17 wherein antimony trioxide is present in an amount from 60 to 83%, based on the combined weight of antimony trioxide and zinc sulfide.
References Cited (Backward Citations)
US2711968A
Cited
US2772158A
Cited
US2905555A
Cited
US3202629A
Cited
US3462389A
Cited
US3267069A
Cited
US3352820A
Cited
US3331811A
Cited
US3535257A
Cited
US3962154A
Cited
US3900441A
Cited
US3945974A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-09-04 | 1982-03-06 | 1982-09-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-09-04 | 1986-03-06 | 1986-09-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-09-04 | 1990-03-06 | 1990-09-05 | $7700.00 | Window Closed / Lapsed |