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US3679681A Expired / Lapsed US ⏱️ 0.0 years remaining

Diglycidyl ethers

Assignee: Novartis AG
•
Filing: 1970-01-07
•
Granted: 1972-07-25
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Expires: 1990-01-07
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Abstract

Abstract New diglycidyl ethers of binuclear, five-membered or sixmembered, unsubstituted or substituted, oxyalkylated N-heterocyclic compounds, which contain two NH groups in the molecule, by reaction of binuclear, five-membered or six-membered, unsubstituted or substituted, N-heterocyclic compounds, such as bis-(hydantoin) or bis-(dihydrouracil) compounds, for example 1,1''-methylene-bis-(5,5-dimethylhydantoin), bis-(5,5dimethylhydantoinyl-3)-methane or 1,1''-methylene-bis-(5,6dihydrouracil) with ethylene oxide, for example ethylene oxide or propylene oxide, to give the corresponding monohydroxy or dihydroxy compounds, and subsequent glycidylation of the OH groups or of the OH group and the NH group to give the corresponding glycidyl ethers. The new diglycidyl ethers can be crosslinked by means the usual curing agents for epoxides to form insoluble and infusible products with good mechanical properties.

Inventors

  • 👤 Juergen Habermeier
  • 👤 Hans Batzer
  • 👤 Daniel Porret

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-03 19:52
CPC Classifications
C; C07; C07D; C07D239/00; C07D239/02; C07D239/20; C07D239/22; C07D233/00; C07D233/54; C07D233/66; C07D233/72; C08; C08G; C08G59/00; C08G59/18; C08G59/20; C08G59/22; C08G59/26

Claims Analysis

Total Claims: 8
Claim 1
Independent Claim 3 words
1,1''-Methylene-bis-(3- Beta -glycidyloxyethyl-5,5-dimethylhydantoin).
Claim 2
Dependent Claim 5 words
1,1''-Methylene-bis-(3- Beta - Beta ''-methylglycidyloxy)-ethyl-5,5-dimethylhydantoin).
Claim 3
Dependent Claim 3 words
1,4-Bis-(1''- Beta ''-glycidyloxyethyl-5'',5''-dimethylhydantoinyl-3'')-butane.
Claim 4
Dependent Claim 4 words
1,1''-Methylene-bis-(3- Beta -glyciDyloxyethoxyethoxyethyl-5, 5-dimethylhydantoin).
Claim 5
Dependent Claim 3 words
1,1''-Methylene-bis-(3- Beta -glycidyloxy-n-propyl-5,5-dimethyl-hydantoin).
Claim 6
Dependent Claim 5 words
1,1''-Methylene-bis-(3- Beta -( Beta ''-methylglycidyloxy)-n-propyl-5,5-dimethylhydantoin).
Claim 7
Dependent Claim 3 words
1,1''-Methylene-bis-(3- Beta -glycidyloxy-n-propyl-5isopropyl-hydantoin.
Claim 8
Dependent Claim 3 words
1,1''-Methylene-bis-(3- Beta -glycidyloxy-n-propyl-5,5-dimethyl-5,6-dihydrouracil).

References Cited (Backward Citations)

US3542803A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1975-07-25 1976-01-24 1976-07-25 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1979-07-25 1980-01-24 1980-07-25 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1983-07-25 1984-01-24 1984-07-25 $7700.00 Window Closed / Lapsed

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