US3922323A
Expired / Lapsed
US
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Cyclic phosphonic acid esters
Assignee: Hoechst AG
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Filing: 1973-06-28
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Granted: 1975-11-25
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Expires: 1993-06-28
Abstract
Abstract A flame-retardant composition consisting essentially of a) an unsaturated polymeric condensation product of unsaturated dibasic acid and polyhydric alcohol and b) a cyclic phosphonic ester having the formula (I) according to claim 1, wherein the symbols have the meaning as defined therein, a hardened body obtained from the composition, compounds of the formula (I) and a process for their preparation.
Inventors
- 👤 Johannes Reese
- 👤 Kurt Kraft
- 👤 Edgar Dick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 19:34
CPC Classifications
C; C07; C07F; C07F9/00; C07F9/02; C07F9/547; C07F9/6564; C07F9/6571; C07F9/657163; C07F9/657181; C07F9/28; C07F9/38; C07F9/40; C07F9/4003; C07F9/4025; C07F9/4056; C07F9/657109; C07F9/657136; C08; C08K; C08K5/00; C08K5/49; C08K5/51; C08K5/53; C08K5/5317; C08K5/5333; C08K5/5357
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
15 words
AN AT LEAST BICYCLIC COMPOUND FREE FROM HYDROXYL AND CARBOXYL GROUPS AND OF THE FORMULA
Claim 2
Dependent Claim
15 words
AN AT LEAST BICYCLIC COMPOUND FREE FROM HYDROXYL AND CARBOXYL GROUPS AND OF THE FORMULA
Claim 3
Dependent Claim
21 words
hydrocarbon radical each of from 1 to 3 pairs of adjacent carbon atoms of which is interrupted by an oxygen atom;
Claim 4
Dependent Claim
21 words
hydrocarbon radical each of from 1 to 3 pairs of adjacent carbon atoms of which is interrupted by an oxygen atom;
Claim 5
Dependent Claim
12 words
A compound according to claim 1 wherein A is a hydrocarbon radical.
Claim 6
Dependent Claim
37 words
A compound according to claim 1 wherein A is a modified hydrocarbon radical, the modification being that each of from one to three pairs of adjacent carbon atoms is, independently, interrupted by an oxa- or an aza-atom.
Claim 7
Dependent Claim
9 words
aliphatic hydrocarbon radical interrupted by 1 nitrogen atom; and
Claim 8
Dependent Claim
9 words
aliphatic hydrocarbon radical interrupted by 1 nitrogen atom; and
Claim 9
Dependent Claim
42 words
halogen substitution product of one of components (1) and (2) being interrupted by 1 oxygen atom, in which substitution product each halogen atom is not or is only with difficulty susceptible to the reaction with trialkyl phosphite in forming monoalkyl phosphonic ester.
Claim 10
Dependent Claim
42 words
halogen substitution product of one of components (1) and (2) being interrupted by 1 oxygen atom, in which substitution product each halogen atom is not or is only with difficulty susceptible to the reaction with trialkyl phosphite in forming monoalkyl phosphonic ester.
Claim 11
Dependent Claim
29 words
A compound according to claim 1 wherein A is a halogensubstituted hydrocarbon radical in which each halogen is not or is only with difficulty susceptible to a Michaelis-Arbusow reaction.
Claim 12
Dependent Claim
56 words
A compound according to claim 1 wherein A is a halogensubstituted modified hydrocarbon radical, the modification being that each of from one to three pairs of adjacent carbon atoms is, independently, interrupted by an oxa- or an aza-atom, and each halogen being one which is not or is only with difficulty susceptible to a Michaelis-Arbusow reaction.
Claim 13
Dependent Claim
20 words
An at least bicyclic compound according to claim 1 wherein A is a member selected from the group consisting of
Claim 14
Dependent Claim
25 words
A compound according to claim 6 wherein Halp is at least 54 and at most 85 percent by weight, based on the weight of AHalp.
Claim 15
Dependent Claim
13 words
A compound according to claim 7 wherein Ri is methylene or substituted methylene.
Claim 16
Dependent Claim
13 words
A compound according to claim 7 wherein (-Ri)3C-R is R4 or substituted R4.
Claim 17
Dependent Claim
9 words
A compound according to claim 6 of the formula
Claim 18
Dependent Claim
22 words
A compound according to claim 10 wherein Y contains three carbon atoms, one X is chloro and the other X is bromo.
Claim 19
Dependent Claim
9 words
The compound according to claim 10 of the formula
Claim 20
Dependent Claim
9 words
The compound according to claim 10 of the formula
Claim 21
Dependent Claim
9 words
The compound according to claim 10 of the formula
Claim 22
Dependent Claim
9 words
The compound according to claim 6 of the formula
References Cited (Backward Citations)
US3511857A
Cited
US3515776A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-11-24 | 1979-05-26 | 1979-11-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-11-24 | 1983-05-26 | 1983-11-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-11-24 | 1987-05-26 | 1987-11-25 | $7700.00 | Window Closed / Lapsed |