US3867322A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Epoxysilane additives for epoxide resin adhesives
Assignee: Novartis Corp
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Filing: 1973-10-02
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Granted: 1975-02-18
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Expires: 1993-10-02
Abstract
Abstract in which A denotes a cycloaliphatic five-membered or sixmembered ring or an aromatic ring, R and R'' each denote an alkyl group with 1 to 4 carbon atoms and n denotes 0, 1 or 2, and their use in adhesives, to which they impart increased resistance to tropical conditions and to water. Embodiments of the invention are glycidyltriethoxysilyl esters of tetra- or hexa-hydrophthalic acid. The invention relates to epoxysilanes of the formula I
Inventors
- 👤 Ernst Leumann
- 👤 Hans Lehmann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 14:26
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/54; C08K5/541; C08K5/5435; C07; C07D; C07D303/00; C07D303/02; C07D303/12; C07D303/16; C07F; C07F7/00; C07F7/02; C07F7/08; C07F7/18; C07F7/1804; C08G; C08G59/00; C08G59/14; C08G59/1433; C08G59/1438; C08G59/145; C08L; C08L63/00
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
40 words
A METHOD FOR IMPROVING THE ADHESIVE STRENGTH AND WATER RESISTANCE OF EPOXIDE RESIN ADHESIVE WHICH COMPRISES INCORPORATING IN SAID ADHESIVE FROM ABOUT 0.1 TO 5 PERCENT BY WEIGHT BASED ON THE WEIGHT OF ADHESIVE, AN EPOXY SILANE OF THE FORMULA:
Claim 2
Independent Claim
40 words
A METHOD FOR IMPROVING THE ADHESIVE STRENGTH AND WATER RESISTANCE OF EPOXIDE RESIN ADHESIVE WHICH COMPRISES INCORPORATING IN SAID ADHESIVE FROM ABOUT 0.1 TO 5 PERCENT BY WEIGHT BASED ON THE WEIGHT OF ADHESIVE, AN EPOXY SILANE OF THE FORMULA:
Claim 3
Dependent Claim
18 words
The method according to claim 1 wherein A is cyclohexane or cyclohexene, and n is 0 or 1.
Claim 4
Dependent Claim
10 words
The method according to claim 2 wherein n is 0.
Claim 5
Dependent Claim
12 words
The method according to claim 1 wherein R is ethyl or methyl.
Claim 6
Dependent Claim
15 words
The method according to claim 1 wherein said epoxy adhesive is based on bisphenol A.
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) | 1978-02-17 | 1978-08-19 | 1979-02-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-02-17 | 1982-08-19 | 1983-02-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-02-17 | 1986-08-19 | 1987-02-18 | $7700.00 | Window Closed / Lapsed |