US3764577A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flame-retardant, polyurethane coating compositions
Assignee: Zeneca Inc
•
Filing: 1970-08-24
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Granted: 1973-10-09
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Expires: 1990-08-24
Abstract
Abstract Polyurethane coating compositions are provided which, after application to substrates, yield transparent coatings having superior flame-retardancy and resiliency. The coating compositions comprise a solvent and a polyurethane reaction product of halogen containing polyol, phosphorus containing product, and organic polyisocyanate.
Inventors
- 👤 J Burns
- 👤 J Feltzin
- 👤 E Koehn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 16:59
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/40; C08G18/48; C08G18/50; C08G18/5075; C08G18/5081; C08G18/5084; C08G18/509; Y; Y10; Y10S; Y10S260/00; Y10S260/24; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31551; Y10T428/31558; Y10T428/31591; Y10T428/31598; Y10T428/31601; Y10T428/31605
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
9 words
a halogen containing polyol characterized by the generalized formula
Claim 2
Dependent Claim
18 words
A coating cmposition of claim 1 wherein the halogen containing polyol (2) is characterized by the generalized formula:
Claim 3
Dependent Claim
28 words
A coating composition of claim 2 wherein x is bromine, A is propylene, R is v,110/6 and the sum of n and m is from 2 to 6.
Claim 4
Dependent Claim
32 words
a phosphorus containing product selected from the group consisting of a. a polyhydroxy phosphate ester product obtained by sequentially reacting polyphosphoric acid and alkylene oxide with an alcohol characterized by the formula
Claim 5
Dependent Claim
118 words
A coating composition of claim 1 werein the polyhydroxy phosphate ester product (a) is obtained by first reacting a polyphosphoric acid containing at least 80 percent by weight of phosphoric anhydride with the said alcohol to form an acidic partial ester and then reacting the acidic partial ester with a sufficient amount of an alkylene oxide hving from 2 to 4 carbon atoms to substantially neutralize the acidity, wherein, in the first stage, the ratio of the sum of the mols of said alcohol and the mols of water of composition in the polyphosphoric acid to mols of P2O5 in the reaction mixture is at least sufficient to convert all of the phosphorus present to the orthophosphate form.
Claim 6
Dependent Claim
26 words
A coating composition of claim 4 wherein X is chlorine, n is 5, m is 2, A is propylene, and p is from 1 to 3.
Claim 7
Dependent Claim
30 words
A coating composition of claim 1 wherein the amount of polyurethane reaction product is from 30 percent to 80 percent by weight based on the total weight of coating composition.
Claim 8
Dependent Claim
56 words
A coating composition of claim 1 wherein the polyurethane reaction product contains from 30 to 75 weight percent of the polyisocyanate (1) and from 70 to 25 weight percent of a mixture comprising from 50 to 90 weight percent of halogen containing polyol (2) and from 50 to 10 weight percent of phosphorus containing product (3).
Claim 9
Dependent Claim
29 words
A coating composition of claim 7 wherin the ratio of isocyanate groups to hydroxyl groups used in the preparation of the polyurethane reaction product is from 1.5 to 2.5.
Claim 10
Dependent Claim
22 words
A coating composition of claim 1 containing from 5 percent to 25 percent by weight of a compound characterized by the formula
Claim 11
Dependent Claim
32 words
A clear, moisture-curing, liquid, polyurethane coating composition comprising 20 percent to 70 percent by weight of an inert, organic solvent, 5 to 25 percent by weight of a compound characterized by the
Claim 12
Dependent Claim
10 words
A substrate coated with a coating composition of claim 1.
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) | 1976-10-08 | 1977-04-09 | 1977-10-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-10-08 | 1981-04-09 | 1981-10-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-10-08 | 1985-04-09 | 1985-10-09 | $7700.00 | Window Closed / Lapsed |