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US3832422A
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US
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Flame retardant systems
Assignee: Uniroyal Chemical Co Inc
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Filing: 1973-04-03
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Granted: 1974-08-27
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Expires: 1993-04-03
Abstract
Abstract The known compound, 1,2,3,4,9,9-hexachloro-1,4-dihydro-1,4methanonaphthalene-5,8-diol (I) is an excellent flame retardant for ABS resins and polyurethanes, particularly, polyether-based polyurethanes. Compound I also forms novel molecular complexes with weak bases such as pyridine, pyridine HCl, pyridine oxide, dimethylsulfoxide and dimethylformamide, and which are excellent flame retardants for ABS resins. Compound I also exhibits unusual synergistic flame retardant effects in ABS resins and other polymers when used together with certain additives that are not themselves flame retardants.
Inventors
- 👤 J Little
- 👤 W Nudenberg
- 👤 Y Rim
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 15:22
CPC Classifications
C; C07; C07D; C07D213/00; C07D213/02; C07D213/04; C07D213/06; C07C; C07C49/00; C07C49/587; C07C49/687; C07C49/693; C07C49/697; C07C49/753; C07C49/76; C07C49/82; C07C49/835; C07C50/00; C07C50/24; C07D213/89; C07F; C07F9/00; C07F9/02; C07F9/06; C07F9/08; C07F9/09; C07F9/12; C07F9/547; C07F9/6564; C07F9/6571; C07F9/6574; C07F9/65742; C08; C08K; C08K5/00; C08K5/04; C08K5/13; C08K5/136
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
36 words
A flame retardant composition as claimed in claim 1, wherein the polymer is an acrylonitrile-butadiene-styrene polymer and the amount of the compound is at least about 6.0 parts per 100 parts by weight of the polymer.
Claim 2
Dependent Claim
35 words
A flame retardant composition as claimed in claim 1, wherein the polymer is a polyurethane and the amount of the compound is at least about 5.0 parts per 100 parts by weight of the polymer.
Claim 3
Dependent Claim
16 words
A flame retardant composition as claimed in claim 3, wherein the polyurethane is a polyether-based polyurethane.
Claim 4
Dependent Claim
36 words
A synergistic composition for rendering a polymer flame retardant and comprising 1,2,3,4,9,9-hexachloro-1,4-dihydro-1,4-methanonaphthalene-5,8-diol and a synergizing amount of an additive selected from the group consisting of urea, magnesium oxide, magnesium sulfide, magnesium acetylacetonate, polyvinylchloride, trityl chloride and
Claim 5
Dependent Claim
24 words
A composition as claimed in claim 5, wherein the additive is urea and the weight ratio of urea to the 1,2,3,4,9,9-hexachloro-1,4-dihydro-1,4-methanonaphthalene-5,8-diol is about 3-6:10.
Claim 6
Dependent Claim
27 words
A composition as claimed in claim 5, wherein the additive is magnesium oxide and the weight ratio of magnesium oxide to the 1, 2,3,4,9,9-hexachloro-1,4-dihydro-1,4-methanonaphthalene-5,8-diol is about 1.4-4.4:7.7-10.
Claim 7
Dependent Claim
29 words
A composition as claimed in claim 5, wherein the additive is magnesium sulfide or magnesium acetylacetonate and the weight ratio of said additive to the 1,2,3,4,9,9-hexachloro-1,4-dihydro-1,4-methanonaphthalene-5,8-diol is about 2.8:7.0.
Claim 8
Dependent Claim
24 words
A composition as claimed in claim 5, wherein the additive is polyvinylchloride and the weight ratio of polyvinylchloride to the 1,2,3,4,9,9-hexachloro-1,4-dihydro-1,4-methanonapthalene-5,8-diol is about 15:6.
Claim 9
Dependent Claim
28 words
A compositon as claimed in claim 5, wherein the additive is trityl chloride and the weight ratio of trityl chloride to the 1, 2,3,4,9,9-hexachloro-b 1,4-dihydro-1,4-methanonaphthalene-5,8-diol is about 4.2:11.1.
Claim 10
Dependent Claim
11 words
A composition as claimed in claim 5, wherein the additive is
Claim 11
Dependent Claim
41 words
A flame retardant composition comprising an acrylonitrile-butadiene-styrene polymer and an effective amount of a composition comprising 1,2,3,4,9,9-hexachloro-1,4-dihydro-1,4-methanonaphthalene-5,8-diol and a synergizing amount of an additive selected from the group consisting of urea, magnesium oxide, magnesium sulfide, magnesium acetylacetonate, polyvinylchloride, trityl chloride and
Claim 12
Dependent Claim
26 words
A flame retardant composition as claimed in claim 12, wherein the additive is urea and the weight ratio of urea to the 1,2,3,4,9,9-hexachloro-1,4-dihydro-1,4-methanonaphthalene-5,8-diol is about 3-6:10.
Claim 13
Dependent Claim
28 words
A flame retardant composition as claimed in claim 12, wherein the additive is magnesium oxide and the weight ratio of magnesium oxide to the 1,2,3,4,9,9-hexachloro-1,4-dihydro-1,4-methanonaphthalene-5,8-diol is about 1.4-4.4:7.7-10.
Claim 14
Dependent Claim
32 words
A flame retardant composition as claimed in claim 12, wherein the additive is magnesium sulfide or magnesium acetylacetonate and the weight ratio of said additive to the 1,2, 3,4,9,9-hexachloro-1,4-dihydro-1,4-methanonaphthalene-5,8-diol is about 2.8:7.0.
Claim 15
Dependent Claim
26 words
A flame retardant composition as claimed in claim 12, wherein the additive is polyvinylchloride and the weight ratio of polyvinylchloride to the 1,2,3,4,9,9-hexachloro-1,4-dihydro-1,4-methanonaphthalene-5,8-diol is about 15:6.
Claim 16
Dependent Claim
28 words
A flame retardant composition as claimed in claim 12, wherein the additive is trityl chloride and the weight ratio of trityl chloride to the 1,2,3,4,9,9-hexachloro-1,4-dihydro-1,4-methanonaphthalene-5,8-diol is about 4.2:11.1.
Claim 17
Dependent Claim
13 words
A flame retardant composition as claimed in claim 12, wherein the additive is
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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) | 1977-08-26 | 1978-02-25 | 1978-08-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-08-26 | 1982-02-25 | 1982-08-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-08-26 | 1986-02-25 | 1986-08-27 | $7700.00 | Window Closed / Lapsed |