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US3666692A Expired / Lapsed US ⏱️ 0.0 years remaining

Flame retardant polypropylene and polyurethane

Assignee: Dow Chemical Co
•
Filing: 1970-09-03
•
Granted: 1972-05-30
•
Expires: 1990-09-03
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Abstract

Abstract The addition of a substituted 2-butene having the general formula EACH X independently, forming either the cis or trans isomer, is F, Cl, Br, I or H where not more than one X is H, each M independently is O or S, each Z independently is Cl or Br, EACH A independently is an inert substituent, such as F, I, methyl, phenyl, hydroxy, methoxy, nitro, carboxy, acetoxy, cyano, amino or sulfo, N AND M ARE INTEGERS OF 1 TO 5 PROVIDED THAT WHEN N M 1 EACH Z and X is Br and M O and provided that when one X is H then n and m are integers of 3 to 5, and i and j are integers of 0 to 2 where i < OR = n-1 and j < OR = m-1 TO A RESIN OF POLYPROPYLENE OR POLYURETHANE MAKES THE RESULTANT RESIN FIRE RETARDANT OR, IN GREATER CONCENTRATIONS, SELFEXTINGUISHING ACCORDING TO Underwriters test class 2.

Inventors

  • 👤 William P Paige
  • 👤 Floyd B Nagle

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-27 15:31
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/04; C08K5/06; C08K5/0008; C08K5/0066; C08K5/02; Y; Y10; Y10S; Y10S260/00; Y10S260/24

Claims Analysis

Total Claims: 13
Claim 1
Independent Claim 17 words
The resin of claim 1 wherein in the fire retardant additive at least one X is Br.
Claim 2
Dependent Claim 15 words
The resin of claim 2 wherein in the fire retardant additive both X are Br.
Claim 3
Dependent Claim 15 words
The resin of claim 1 wherein in the fire retardant additive each Z is Br.
Claim 4
Dependent Claim 15 words
The resin of claim 1 wherein in the fire retardant additive n 3 to 5.
Claim 5
Dependent Claim 14 words
The resin of claim 1 wherein the additive contains 6 to 10 bromine atoms.
Claim 6
Dependent Claim 24 words
The resin of claim 1 wherein in the fire retardant additive each X and each Z is Br, n m 3, i j 0.
Claim 7
Dependent Claim 24 words
The resin of claim 1 wherein in the fire retardant additiVe each X and Z is Br, n 3, m 5, i j 0.
Claim 8
Dependent Claim 26 words
The resin of claim 1 wherein in the fire retardant additive each X and Z is Br, m n 2, each A NO2, i j 1.
Claim 9
Dependent Claim 28 words
The resin of claim 1 wherein in the fire retardant additive each X and each Z are Br, m n 3, each A is methyl, i j 2.
Claim 10
Dependent Claim 16 words
The resin of claim 1 wherein each each Zn each Zm and each Ai each Aj.
Claim 11
Dependent Claim 10 words
The resin of claim 1 wherein the resin is polypropylene.
Claim 12
Dependent Claim 10 words
The resin of claim 1 wherein the resin is polyurethane.
Claim 13
Dependent Claim 16 words
The resin of claim 1 containing 1 to 10 percent by weight of the fire retardant.

References Cited (Backward Citations)

US2488499A Cited
US3075944A Cited
US3372141A Cited
US3330783A Cited
US3491124A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1975-05-30 1975-11-29 1976-05-30 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1979-05-30 1979-11-29 1980-05-30 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1983-05-30 1983-11-29 1984-05-30 $7700.00 Window Closed / Lapsed

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