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US3620983A Expired / Lapsed US ⏱️ 0.0 years remaining

{11 -methylglycidyl-isocyanurates

Assignee: BASF Schweiz AG
•
Filing: 1969-11-12
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Granted: 1971-11-16
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Expires: 1989-11-12
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Abstract

Abstract The new compound tri-( Beta -methylglycidyl)-isocyanurate is manufactured by a reaction, which is in itself known, of cyanuric acid with Beta -methylepichlorhydrin in the presence of tertiary amines or quaternary ammonium salts, and subsequent dehydrohalogenation with alkali. In comparison with the known tri-(glycidyl)-isocyanurate, tri-( Beta -methyglycidyl)isocyanurate can be more easily processed, on the one hand because of the lower melting point and on the other hand because of the lesser reactivity. Apart from compression moulding compositions, the material is therefore also excellently suited to being used as a casting resin. Suitable curing agents are above all polysebacic anhydride, and also aliphatic polyamines. Using the latter, it is surprisingly possible to manufacture a stable B-stage which is for example suitable for the manufacture of compression moulding compositions.

Inventors

  • 👤 Daniel Porret
  • 👤 Hans Batzer
  • 👤 Rolf Schmid
  • 👤 Peter Ruf

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-09 16:16
CPC Classifications
C; C07; C07D; C07D405/00; C07D405/14; E; E04; E04B; E04B9/00; E04B9/18; E04B9/20

Claims Analysis

Total Claims: 2
Claim 1
Independent Claim 5 words
Tri-( Beta -methylglycidyl)-isocyanurate of formula
Claim 2
Dependent Claim 13 words
A curable composition of matter which comprises (a) a Beta -methylglycidyl-isocyanurate of formula

References Cited (Backward Citations)

US2809942A Cited
US2931781A Cited
US3337509A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1974-11-15 1975-05-17 1975-11-16 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1978-11-15 1979-05-17 1979-11-16 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1982-11-15 1983-05-17 1983-11-16 $7700.00 Window Closed / Lapsed

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