US3971813A
Expired / Lapsed
US
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Glycidyl compounds containing phosphorus
Assignee: Novartis Corp
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Filing: 1973-10-09
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Granted: 1976-07-27
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Expires: 1993-10-09
Abstract
Abstract Adducts of cyclic urea derivatives and dialkyl phosphites, containing glycidyl groups, for example adducts of a diglycidyl compound of hydantoins, substituted in the 5-position by alkyl groups or an alkylene group, and of diethyl phosphite or dimethyl phosphite. These adducts are used for the manufacture of flame-retarding plastics.
Inventors
- 👤 Daniel Porret
- 👤 Jurgen Habermeier
- 👤 Dieter Baumann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 16:38
CPC Classifications
C; C07; C07F; C07F9/00; C07F9/02; C08; C08G; C08G59/00; C08G59/14; C08G59/1433; C08G59/1488; C08G59/18; C08G59/20; C08G59/22; C08G59/30; C08G59/304
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
80 words
An adduct prepared by reacting a hydantoin compound selected from the group consisting of 1,3-diglycidyl-5,5-dimethylhydantoin, the triglycidyl compound produced from 1,3-bis-(5,5-dimethylhydantoinyl-3)-propan-2-ol, 1-(glycidyloxymethyl)-3-glycidyl-5,5-dimethylhydantoin, 1,3-diglycidyl-5,5-pentamethylenehydantoin, bis-(3-glycidyl-5,5-dimethylhydantoinyl-1)-methane and 1,3-diglycidyl-5,5-dimethylhydantoin, and a compound of the formula I ##EQU2## wherein R 1 and R 2 each represent an alkyl of 1 to 4 carbon atoms, monochloroethyl or together form an alkylene of to 5 carbon atoms, wherein said adduct contains from 1 to 8% phosphorus and has an epoxide content between 1 to 6 equivalents/kg.
Claim 2
Dependent Claim
80 words
An adduct prepared by reacting a hydantoin compound selected from the group consisting of 1,3-diglycidyl-5,5-dimethylhydantoin, the triglycidyl compound produced from 1,3-bis-(5,5-dimethylhydantoinyl-3)-propan-2-ol, 1-(glycidyloxymethyl)-3-glycidyl-5,5-dimethylhydantoin, 1,3-diglycidyl-5,5-pentamethylenehydantoin, bis-(3-glycidyl-5,5-dimethylhydantoinyl-1)-methane and 1,3-diglycidyl-5,5-dimethylhydantoin, and a compound of the formula I ##EQU2## wherein R 1 and R 2 each represent an alkyl of 1 to 4 carbon atoms, monochloroethyl or together form an alkylene of to 5 carbon atoms, wherein said adduct contains from 1 to 8% phosphorus and has an epoxide content between 1 to 6 equivalents/kg.
Claim 3
Dependent Claim
13 words
An adduct according to claim 1 prepared in the presence of tetramethlammonium chloride.
Claim 4
Dependent Claim
26 words
A compound according to claim 1, characterised in that R 1 and R 2 each denote the methyl, ethyl or propyl group or a monochloroethyl group.
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) | 1979-07-27 | 1980-01-26 | 1980-07-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-07-27 | 1984-01-26 | 1984-07-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-07-27 | 1988-01-26 | 1988-07-27 | $7700.00 | Window Closed / Lapsed |