Patent US4133846A successfully refreshed from Google Patents.
US4133846A
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US
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Hydroxyl containing phosphates and polyphosphates
Assignee: Great Lakes Chemical Corp
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Filing: 1977-06-30
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Granted: 1979-01-09
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Expires: 1997-06-30
Abstract
Abstract Novel esters of pentavalent phosphorus acid having the formula ##STR1## WHEREIN R and R' are haloalkyl containing from 2 to 6 carbon atoms and from 1 to 6 halogen atoms; n is an integer of from 1 to 3; each X is independently selected from hydrogen, halogen, alkyl, or hydroxyl, provided that at least one X is hydroxyl. The above compounds are effective reactive flame retardants in polyurethane and polyester polymeric compositions.
Inventors
- 👤 James A. Albright
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 14:02
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/49; C08K5/51; C08K5/52; C08K5/521; C07; C07F; C07F9/00; C07F9/02; C07F9/06; C07F9/08; C07F9/09; C07F9/091; C07F9/093; Y; Y10; Y10S; Y10S521/00; Y10S521/906
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
57 words
A phosphate of the formula ##STR9## wherein R and R' are independently selected from lower haloalkyls having 2 to 6 carbon atoms and 1 to 6 halogen atoms, n is an integer from 1 to 3, and wherein each X is independently selected from hydrogen, halogen, alkyl, and hydroxyl, provided that at least one X is hydroxyl.
Claim 2
Dependent Claim
57 words
A phosphate of the formula ##STR9## wherein R and R' are independently selected from lower haloalkyls having 2 to 6 carbon atoms and 1 to 6 halogen atoms, n is an integer from 1 to 3, and wherein each X is independently selected from hydrogen, halogen, alkyl, and hydroxyl, provided that at least one X is hydroxyl.
Claim 3
Dependent Claim
12 words
The phosphate of claim 1 wherein the halogen is chlorine or bromine.
Claim 4
Dependent Claim
12 words
The phosphate of claim 2 wherein said haloalkyls are straight chain haloalkyls.
Claim 5
Dependent Claim
24 words
The phosphate of claim 2 wherein each X is independently selected from hydrogen, halogen, and hydroxyl, provided that at least one X is hydroxyl.
Claim 6
Dependent Claim
11 words
The phosphate of claim 4 wherein said phosphate is bis(2,3-dibromopropyl)-2,2-dimethyl-3-hydroxypropyl phosphate.
Claim 7
Dependent Claim
11 words
The phosphate of claim 4 wherein said phosphate is bis-(2,3-dichloropropyl)-2,2-dimethyl-3-hydroxypropyl phosphate.
Claim 8
Dependent Claim
10 words
The phosphate of claim 4 wherein said phosphate is tetrakis(2-chloroethyl)pentaerythritoldiphosphate.
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) | 1982-01-08 | 1982-07-10 | 1983-01-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-01-08 | 1986-07-10 | 1987-01-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-01-08 | 1990-07-10 | 1991-01-09 | $7700.00 | Window Closed / Lapsed |