US3970716A
Expired / Lapsed
US
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Flame resistant thermoplastic blend
Assignee: Uniroyal Chemical Co Inc
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Filing: 1974-06-05
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Granted: 1976-07-20
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Expires: 1994-06-05
Abstract
Abstract Thermoplastic blends of polyurethane polymers, chlorinated polyethylene polymer, optionally polyethylene resins and antimony trioxide, and a flame retardant selected from 1,2,3,4,7,8,9,10,13,13,14,14-dodecachloro-1,4,4a,6a,7,10,10a,12a-octahydro-1,4:7,10-dimethanodibenzocyclooctane, 1,2,3,4,5,6,7,8,10,10,11,11-dodecachloro-1,4,4a,4b,5,8,8a,9a-octahydro-1,4:5,8-dimethanodibenzofuran, 6-(1',4',5',6',7',7'-hexachloronorborn-5'-en-2'-yl)-1,2,3,4,10,10-hexachloro-1,4,4a,5,6,7,8,8a,-octahydro-1,4:5,8-dimethanonaphthalene, and 6-(1',4',5',6',7',7'-hexachloronorborn-5'-en-2'-yl)-1,2,3,4,10,10-hexachloro-1,4,4a,5,6,7,8,8a-octahydro-1,4-methanonaphthalene, are flame resistant and also essentially retain the good physical properties of a polyurethane-chlorinated polyethylene polymer blend not containing a flame retardant.
Inventors
- 👤 Carl A. Evers
- 👤 Harold G. Wolf, Jr.
- 👤 Howard S. Kravitz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 07:32
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/0008; C08K5/0066; C08K5/02; C08K5/04; C08K5/15; C08L; C08L23/00; C08L23/26; C08L23/28; C08L75/00; C08L75/04
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
92 words
A flame resistant thermoplastic composition comprising a blend of a. a thermoplastic polyurethane elastomer essentially devoid of ethylene unsaturation and free --NCO groups, b. a chlorinated polyethylene having a chlorine content of 25 to 50 percent by weight, c. a flame retardant selected from the group consisting of 1,2,3,4,7,8,9,10,13,13,14,14-dodecaachloro-1,4,4a,6a,7,10,10a12a-octahydro-1,4:7,10-dimethano-dibenzocyclooctane, 1,2,3,4,5,6,7,8,10,10,11,11-dodecachloro-1,4,4a,4b,5,8,8a,9a-octahydro-1,4:5,8-dimethano-dibenzofuran, 6-(1',4',5',6',7',7'-hexachloronorborn-5'-en-2'-yl)-1,2,3,4,10,10-hexachloro-1,4,4a,5,6,7,8,8a-octahydro-1,4:5,8-dimethanonaphthalene, and 6-(1',4',5',6',7',7'-hexachloronorborn-5'-en-2'-yl)-1,2,3,4,10,10,-hexachloro-1,4,4a,5,6,7,8,8a-octahydro-1,4-methano-naphthalene, wherein the weight ratio of (a) to (b) in said blend is within the range from 90:10 to 60:40 and the mount of (c) is from 15 to 25 parts per 100 parts by weight of (a) plus (b).
Claim 2
Dependent Claim
92 words
A flame resistant thermoplastic composition comprising a blend of a. a thermoplastic polyurethane elastomer essentially devoid of ethylene unsaturation and free --NCO groups, b. a chlorinated polyethylene having a chlorine content of 25 to 50 percent by weight, c. a flame retardant selected from the group consisting of 1,2,3,4,7,8,9,10,13,13,14,14-dodecaachloro-1,4,4a,6a,7,10,10a12a-octahydro-1,4:7,10-dimethano-dibenzocyclooctane, 1,2,3,4,5,6,7,8,10,10,11,11-dodecachloro-1,4,4a,4b,5,8,8a,9a-octahydro-1,4:5,8-dimethano-dibenzofuran, 6-(1',4',5',6',7',7'-hexachloronorborn-5'-en-2'-yl)-1,2,3,4,10,10-hexachloro-1,4,4a,5,6,7,8,8a-octahydro-1,4:5,8-dimethanonaphthalene, and 6-(1',4',5',6',7',7'-hexachloronorborn-5'-en-2'-yl)-1,2,3,4,10,10,-hexachloro-1,4,4a,5,6,7,8,8a-octahydro-1,4-methano-naphthalene, wherein the weight ratio of (a) to (b) in said blend is within the range from 90:10 to 60:40 and the mount of (c) is from 15 to 25 parts per 100 parts by weight of (a) plus (b).
Claim 3
Dependent Claim
26 words
The composition of claim 1 wherein (d) polyethylene resin is added in up to about 6 parts per 100 parts by weight of (a) plus (b).
Claim 4
Dependent Claim
25 words
The composition of claim 1 wherein (d) polyethylene resin is added in 2 to 4 parts per 100 parts by weight of (a) plus (b).
Claim 5
Dependent Claim
45 words
The composition of claim 1 wherein (e) antimony trioxide is added and the total amount of (c) plus (e) is from 13 to 25 parts and the amount of (c) is at least 5 parts, both per 100 parts by weight of (a) plus (b).
Claim 6
Dependent Claim
28 words
The composition of claim 5 wherein the total amount of (c) plus (e) is from 17 to 20 parts, per 100 parts by weight of (a) plus (b).
Claim 7
Dependent Claim
11 words
The composition of claim 1 wherein the flame retardant is 1,2,3,4,5,6,7,8,10,10,11,11-dodecachloro-1,4,4a,4b,5,8,8a,9a-octahydro-1,4:5,8-dimethano-dibenzofuran.
Claim 8
Dependent Claim
11 words
The composition of claim 1 wherein the flame retardant is 1,2,3,4,7,8,9,10,13,13,14,14-dodecachloro-1,4,4a,6a,7,10,10a,12a-octahydro-1,4:7,10-dimethanodibenzocyclooctane.
Claim 9
Dependent Claim
29 words
The composition of claim 1 wherein (a) is a reaction product of a polymeric polyol, an organic polyisocyanate and a low molecular weight bi-functional material having two reactive hydrogens.
Claim 10
Dependent Claim
12 words
The composition of claim 1 wherein the polyurethane polymer is an elastomer.
Claim 11
Independent Claim
102 words
A method of making a flame resistant shaped article comrising preparing a flame resistant thermoplastic composition comprising a blend of a. a thermoplastic polyurethane elastomer essentially devoid of ethylenic unsaturation and free --NCO groups, b. a chlorinated polyethylene having a chlorine content of 25 to 50 percent by weight, c. a flame retardant selected from the group consisting of 1,2,3,4,7,8,9,10,13,13,14,14-dodecahcloro-1,4,4a,6a,7,10,10a,12a-octahydro-1,4:7,10-dimethano-dibenzocyclooctane, 1,2,3,4,5,6,7,8,10,10,11,11-dodecachloro-1,4,4a,4b,5,8,8a,9a-octahydro-1,4:5,8-dimethano-dibenzofuran,6-(1',4',5',6',7',7'hexachloronorborn-5'-en-2'-yl)-1,2,3,4,10,10-hexachloro-1,4,4a,5,6,7,8,8a-octahydro-1,4:5,8:dimethanonaphthalene, and 6-(1',4',5',6',7',7'-hexachloronorborn-5'-en-2'-yl)-1,2,3,4,10,10-hexachloro-1,4,4a,5,6,7,8,8a-octahydro-1,4-methano-naphthalene, wherein the weight ratio of (a) to (b) in said blend is within the range from 90:10 to 60:40 and the amount of (c) is from 15 to 25 parts per 100 parts by weight of (a) plus (b).
Claim 12
Independent Claim
102 words
A method of making a flame resistant shaped article comrising preparing a flame resistant thermoplastic composition comprising a blend of a. a thermoplastic polyurethane elastomer essentially devoid of ethylenic unsaturation and free --NCO groups, b. a chlorinated polyethylene having a chlorine content of 25 to 50 percent by weight, c. a flame retardant selected from the group consisting of 1,2,3,4,7,8,9,10,13,13,14,14-dodecahcloro-1,4,4a,6a,7,10,10a,12a-octahydro-1,4:7,10-dimethano-dibenzocyclooctane, 1,2,3,4,5,6,7,8,10,10,11,11-dodecachloro-1,4,4a,4b,5,8,8a,9a-octahydro-1,4:5,8-dimethano-dibenzofuran,6-(1',4',5',6',7',7'hexachloronorborn-5'-en-2'-yl)-1,2,3,4,10,10-hexachloro-1,4,4a,5,6,7,8,8a-octahydro-1,4:5,8:dimethanonaphthalene, and 6-(1',4',5',6',7',7'-hexachloronorborn-5'-en-2'-yl)-1,2,3,4,10,10-hexachloro-1,4,4a,5,6,7,8,8a-octahydro-1,4-methano-naphthalene, wherein the weight ratio of (a) to (b) in said blend is within the range from 90:10 to 60:40 and the amount of (c) is from 15 to 25 parts per 100 parts by weight of (a) plus (b).
Claim 13
Dependent Claim
26 words
The method of claim 12 wherein (d) polyethylene resin is added in up to about 6 parts per 100 parts by weight of (a) plus (b).
Claim 14
Dependent Claim
48 words
The method of claim 13 wherein (e) antimony trioxide is added in such an amount that the total of (c) plus (e) is from 13 to 25 parts and the amount of (c) is at least 5 parts, both per 100 parts by weight of (a) plus (b).
Claim 15
Dependent Claim
10 words
The product obtained from the method according to claim 10.
Claim 16
Dependent Claim
10 words
The product obtained from the method according to claim 11.
Claim 17
Dependent Claim
10 words
The product obtained from the method according to claim 12.
References Cited (Backward Citations)
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US3392136A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-07-20 | 1980-01-19 | 1980-07-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-07-20 | 1984-01-19 | 1984-07-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-07-20 | 1988-01-19 | 1988-07-20 | $7700.00 | Window Closed / Lapsed |