Patent US5801771A successfully refreshed from Google Patents.
Patent US4253972A successfully refreshed from Google Patents.
US4253972A
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Flame retardant polyolefins
Assignee: Great Lakes Chemical Corp
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Filing: 1979-10-01
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Granted: 1981-03-03
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Expires: 1999-10-01
Abstract
Abstract The addition of a polyhydric alcohol to compositions comprising a polyolefin and a pentate salt of an amino-s-triazine improves the intumescent behavior and flame retardant characteristics thereof.
Inventors
- 👤 Clifton T. Fleenor, Jr.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 09:16
CPC Classifications
C; C09; C09K; C09K21/00; C09K21/14; C08; C08K; C08K5/00; C08K5/04; C08K5/05; C08K5/053; C08K5/16; C08K5/34; C08K5/3467; C08K5/3477; C08K5/3492; C08K5/34928
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
30 words
Polyolefin compositions comprising a polyolefin, an intumescent flame retardant additive selected from the group consisting of melammonium pentate, the pentate salt of ammelide, and mixtures thereof, and a polyhydric alcohol.
Claim 2
Dependent Claim
30 words
Polyolefin compositions comprising a polyolefin, an intumescent flame retardant additive selected from the group consisting of melammonium pentate, the pentate salt of ammelide, and mixtures thereof, and a polyhydric alcohol.
Claim 3
Dependent Claim
25 words
The composition of claim 1 wherein the polyhydric alcohol is selected from the group consisting of pentaerythritol, dipentaerythritol, tripentaerythritol, pentitols, and hexitols and mixtures thereof.
Claim 4
Dependent Claim
23 words
The composition of claim 1 wherein the polyhydric alcohol is selected from the group consisting of pentaerythritol, dipentaerythritol, and tripentaerythritol and mixtures thereof.
Claim 5
Dependent Claim
26 words
The composition of claim 1 wherein the polyhydric alcohol is selected from the group consisting of inositol, adonitol, arabitol, dulcitol, N-methylglucamine, amylose, xylan and mixtures thereof.
Claim 6
Dependent Claim
47 words
The composition of claim 1 wherein the intumescent flame retardant additive is present in from about 15 to about 40 percent by weight of the total composition, and wherein the weight ratio of intumescent flame retardant additive to polyhydric alcohol is in the range 10:1 to 4:1.
Claim 7
Dependent Claim
20 words
The composition of claim 1 wherein the polyolefin is selected from the group consisting of polypropylene, polyethylene and copolymers thereof.
Claim 8
Dependent Claim
11 words
The composition of claim 1 wherein said additive is melammonium pentate.
Claim 9
Dependent Claim
14 words
The composition of claim 1 wherein said additive is the pentate salt of ammelide.
Claim 10
Dependent Claim
20 words
An intumescent composition adapted to render polyolefins flame retardant comprising a pentate salt of an amino-s-triazine and a polyhydric alcohol.
Claim 11
Dependent Claim
20 words
An intumescent composition adapted to render polyolefins flame retardant comprising a pentate salt of an amino-s-triazine and a polyhydric alcohol.
Claim 12
Dependent Claim
29 words
The composition of claim 9 wherein the pentate salt of an amino-s-triazine and the polyhydric alcohol are present in a weight ratio of from about 10:1 to about 4:1.
Claim 13
Dependent Claim
29 words
The composition of claim 9 wherein the pentate salt of an amino-s-triazine is selected from the group consisting of melammonium pentate, the pentate salt of ammelide and mixtures thereof.
Claim 14
Dependent Claim
25 words
The composition of claim 9 wherein the polyhydric alcohol is selected from the group consisting of pentaerythritol, dipentaerythritol, tripentaerythritol, pentitols, and hexitols and mixtures thereof.
Claim 15
Dependent Claim
23 words
The composition of claim 9 wherein the polyhydric alcohol is selected from the group consisting of pentaerythritol, dipentaerythritol, and tripentaerythritol and mixtures thereof.
Claim 16
Dependent Claim
26 words
The composition of claim 9 wherein the polyhydric alcohol is selected from the group consisting of inositol, adonitol, arabitol, dulcitol, N-methylglucamine, amylose, xylan and mixtures thereof.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-03-02 | 1984-09-01 | 1985-03-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-03-02 | 1988-09-01 | 1989-03-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-03-02 | 1992-09-01 | 1993-03-03 | $7700.00 | Window Closed / Lapsed |