US3920616A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Alkoxy derivatives of hexachlorophosphonitrile chloride
Assignee: United States Department of the Navy
•
Filing: 1974-06-19
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Granted: 1975-11-18
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Expires: 1994-06-19
Abstract
Abstract Enhancing the fire retardancy of general purpose polyester resins by admixing alkoxy derivatives of hexachlorophosphonitrile cyclic trimer with the resins before they are cured.
Inventors
- 👤 Robert M Murch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 09:38
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/49; C08K5/5399; Y; Y10; Y10S; Y10S260/00; Y10S260/24
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
66 words
A METHOD FOR ENHANCING THE FIRE RETARDANCY CHARACTERISTICS OF UNSATURATED GENERAL PURPOSE POLYESTER RESINS, WHICH COMPRISES BASED ON TOTAL WEIGHT ADMIXING FROM ABOUT 5 TO 20% OF AN ALKOXY DERIVATIVE PRODUCED BY THE REACTION OF HEXACHLOROPHOSPHONITRILE CYCLIC TRIMER AND AN ALCOHOL SELECTED FROM THE GROUP CONSISTING OF B-CHLOROETHANOL, 3,3,3-TRICHLOROPROPANOL, 1,2-DICHLORO-2-PROPANOL, 2,3-DIBROMOPROPANOL, METHANOL, ETHANOL, AND 2,2,2-TRICHLOROETHANOL WITH SAID UNSATURATED POLYESTER RESIN; AND CURING SAID UNSATURATED POLYESTER RESIN.
Claim 2
Independent Claim
66 words
A METHOD FOR ENHANCING THE FIRE RETARDANCY CHARACTERISTICS OF UNSATURATED GENERAL PURPOSE POLYESTER RESINS, WHICH COMPRISES BASED ON TOTAL WEIGHT ADMIXING FROM ABOUT 5 TO 20% OF AN ALKOXY DERIVATIVE PRODUCED BY THE REACTION OF HEXACHLOROPHOSPHONITRILE CYCLIC TRIMER AND AN ALCOHOL SELECTED FROM THE GROUP CONSISTING OF B-CHLOROETHANOL, 3,3,3-TRICHLOROPROPANOL, 1,2-DICHLORO-2-PROPANOL, 2,3-DIBROMOPROPANOL, METHANOL, ETHANOL, AND 2,2,2-TRICHLOROETHANOL WITH SAID UNSATURATED POLYESTER RESIN; AND CURING SAID UNSATURATED POLYESTER RESIN.
Claim 3
Dependent Claim
21 words
The method of claim 1 further including the step of adding a peroxide catalyst, thereby catalyzing said unsaturated polyester resin cure.
Claim 4
Dependent Claim
18 words
The method of claim 2 further including the step of adding heat to said unsaturated polyester resin cure.
Claim 5
Dependent Claim
64 words
A polymer having enhanced fire retardancy properties comprising an unsaturated general purpose polyester resin containing an alkoxy derivative produced from the reaction of an alcohol selected from the group consisting of Beta -chloroethanol, 3,3,3-trichloropropanol, 1,3-dichloro-2-propanol, 2,3-dibromopropanol, methanol, ethanol, and 2,2,2-trichloroethanol with hexachlorophosphonitrile cyclic trimer, wherein said alkoxy derivative is present in a quantity ranging from about 5 to 20% by weight of said polyester.
Claim 6
Dependent Claim
64 words
A polymer having enhanced fire retardancy properties comprising an unsaturated general purpose polyester resin containing an alkoxy derivative produced from the reaction of an alcohol selected from the group consisting of Beta -chloroethanol, 3,3,3-trichloropropanol, 1,3-dichloro-2-propanol, 2,3-dibromopropanol, methanol, ethanol, and 2,2,2-trichloroethanol with hexachlorophosphonitrile cyclic trimer, wherein said alkoxy derivative is present in a quantity ranging from about 5 to 20% by weight of said polyester.
Claim 7
Dependent Claim
25 words
The method of claim 2 further including the step of adding an accelerator selected from the group consisting of cobalt naphthenate, dimethyl-p-toluidine, and vanadium accelerators.
Claim 8
Dependent Claim
18 words
The method of claim 2 wherein said alcohol is selected from the group consisting of methanol and ethanol.
Claim 9
Dependent Claim
19 words
The method of claim 2 wherein said alcohol is selected from the group consisting of Beta -chloroethanol and 2,2,2-trichloroethanol.
Claim 10
Dependent Claim
19 words
The method of claim 2 wherein said alcohol is selected from the group consisting of 3,3,3-trichloropropanol, 1,3-dichloro-2-propanol, and 2,3-dibromopropanol.
Claim 11
Dependent Claim
18 words
The polymer of claim 4 wherein said alcohol is selected from the group consisting of methanol and ethanol.
Claim 12
Dependent Claim
19 words
The polymer of claim 4 wherein said alcohol is selected from the group consisting of Beta -chloroethanol and 2,2,2-trichloroethanol.
Claim 13
Dependent Claim
19 words
The polymer of claim 4 wherein said alcohol is selected from the group consisting of 3,3,3-trichloropropanol, 1,0-dichloro-2-propanol, and 2,3-dibromopropanol.
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) | 1978-11-17 | 1979-05-19 | 1979-11-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-11-17 | 1983-05-19 | 1983-11-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-11-17 | 1987-05-19 | 1987-11-18 | $7700.00 | Window Closed / Lapsed |