US3775165A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polymers of improved flame retardance
Assignee: Milliken Research Corp
•
Filing: 1971-07-19
•
Granted: 1973-11-27
•
Expires: 1991-07-19
Abstract
Abstract A polyester or polypropylene polymer containing a halogenated aromatic carboxylic acid ester. The polymers prepared in this manner exhibit improved flame retardant properties.
Inventors
- 👤 F Young
- 👤 M Lock
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 18:11
CPC Classifications
D; D06; D06M; D06M15/00; D06M15/19; D06M15/37; D06M15/507; C; C08; C08K; C08K5/00; C08K5/04; C08K5/10; C08K5/12; D06M13/00; D06M13/10; D06M13/184; D06M13/192; D06M13/224; D06M15/21; D06M15/227; Y; Y10; Y10S; Y10S428/00; Y10S428/92; Y10S428/921; Y10S8/00; Y10S8/92; Y10S8/922; Y10S8/923; Y10T; Y10T442/00; Y10T442/20; Y10T442/2631; Y10T442/2672; Y10T442/2705; Y10T442/2713
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
15 words
The polymer of claim 1 wherein X in the acid ester is chlorine or bromine.
Claim 2
Dependent Claim
16 words
The polymer of claim 1 wherein R in the acid ester is a hydroxy alkyl radical.
Claim 3
Dependent Claim
28 words
The polymer of claim 1 wherein X in the acid ester iS bromine, R is hydroxy alkyl and Y is COOR'' wherein R'' is a hydroxy alkyl radical.
Claim 4
Dependent Claim
19 words
The polymer of claim 4 wherein R in the acid ester is hydroxy ethyl and R'' is hydroxy isopropyl.
Claim 5
Dependent Claim
11 words
The polymer of claim 1 wherein the polymer is a polyester.
Claim 6
Dependent Claim
11 words
The polymer of claim 1 wherein the polymer is a polypropylene.
Claim 7
Dependent Claim
13 words
A polyester- or polypropylene-containing fabric containing an acid ester having the general formula
Claim 8
Dependent Claim
23 words
The fabric of claim 8 wherein X in the acid ester is bromine, Y is COOR and R is a hydroxy alkyl radical.
Claim 9
Dependent Claim
14 words
The fabric of claim 8 wherein the fabric is impregnated with the acid ester.
Claim 10
Dependent Claim
24 words
The fabric of claim 8 wherein the acid ester is combined with the polymer from which the fibers of the fabric have been formed.
Claim 11
Dependent Claim
20 words
A polyester- and cotton-containing fabric having improved flame-retardant and dyeing properties impregnated with an acid diester having the general formula
Claim 12
Dependent Claim
14 words
The fabric of claim 12 wherein the phosphorus composition is tetrakis (hydroxymethyl) phosphonium chloride.
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) | 1976-11-26 | 1977-05-28 | 1977-11-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-11-26 | 1981-05-28 | 1981-11-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-11-26 | 1985-05-28 | 1985-11-27 | $7700.00 | Window Closed / Lapsed |