US4963636A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Adhesion promoters
Assignee: Huntsman Advanced Materials Americas LLC
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Filing: 1990-02-12
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Granted: 1990-10-16
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Expires: 2010-02-12
Abstract
Abstract Compounds of formula (I) ##STR1## wherein one of the radicals R 1 or R 2 is --N═C═O and the other is --NHC(O)S(CH 2 ) 3 Si(OR 3 ) 3 , wherein R 3 is C 1 -C 4 alkyl or phenyl, are most suitable for use as adhesion promoters for polyurethane single-component or two-component adhesives and also as primers.
Inventors
- 👤 Rolf Mulhaupt
- 👤 Hubert Simon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 12:27
CPC Classifications
C; C07; C07F; C07F7/00; C07F7/02; C07F7/08; C07F7/10; C09; C09J; C09J175/00; C09J175/04; C07F7/18; C07F7/1804; C08; C08G; C08G18/00; C08G18/06; C08G18/08; C08G18/10; C08G18/70; C08G18/72; C08G18/80; C08G18/8061; C08G18/8083; C08G18/809; Y; Y10; Y10S; Y10S528/00; Y10S528/901; Y10S528/903
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
88 words
A two component adhesive consisting essentially of (I) a polyfunctional isocyanate compound or an isocyanate terminated polyurethane prepolymer and a compound of formula I ##STR4## wherein one of the radicals R 1 or R 2 is --N═C═O and the other is --NHC(O)S(CH 2 ) 3 Si(OR 3 ) 3 , wherein R 3 is C 1 -C 4 alkyl or phenyl and (II) as a curing agent, a polyol with the proviso that the ratio of NCO groups to OH groups is less than or equal to 1.02.
Claim 2
Dependent Claim
88 words
A two component adhesive consisting essentially of (I) a polyfunctional isocyanate compound or an isocyanate terminated polyurethane prepolymer and a compound of formula I ##STR4## wherein one of the radicals R 1 or R 2 is --N═C═O and the other is --NHC(O)S(CH 2 ) 3 Si(OR 3 ) 3 , wherein R 3 is C 1 -C 4 alkyl or phenyl and (II) as a curing agent, a polyol with the proviso that the ratio of NCO groups to OH groups is less than or equal to 1.02.
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) | 1993-10-15 | 1994-04-16 | 1994-10-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-10-15 | 1998-04-16 | 1998-10-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-10-15 | 2002-04-16 | 2002-10-16 | $7700.00 | Window Closed / Lapsed |