US3856756A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Silyl substituted urea derivatives and a process for their preparation
Assignee: Bayer AG
•
Filing: 1972-11-03
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Granted: 1974-12-24
•
Expires: 1992-11-03
Abstract
Abstract A process for the preparation of polyaddition compounds of controlled reactivity by reacting polyaddition products which contain alkoxysilane groups of the general formula IN WHICH ARE REACTED WITH ORGANIC POLYISOCYANATES.
Inventors
- 👤 K Wagner
- 👤 G Oertel
- 👤 H Golitz
- 👤 I Golitz
- 👤 B Quiring
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 15:59
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/30; C08G18/38; C08G18/3893; C07; C07F; C07F7/00; C07F7/02; C07F7/08; C07F7/18; C07F7/1804; C08G18/08; C08G18/10; Y; Y10; Y10S; Y10S528/00; Y10S528/903; Y10S528/906
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
51 words
A PROCESS FOR THE PREPARATION OF POLYADDITION PRODUCTS WHICH CONTAIN ALKOXYSILANE GROUPS, COMPRISING REACTING IN THE PRESENCE OF 10 TO 80% BY WEIGHT BASED ON THE SUM OF THE REACTANTS OF A SECONDARY OR TERTIARY ALCOHOL AT A TEMPERATURE BETWEEN -20*C AND + 150*C AN ALKOXYSILANE GROUP OF THE GENERAL FORMULA
Claim 2
Dependent Claim
51 words
A PROCESS FOR THE PREPARATION OF POLYADDITION PRODUCTS WHICH CONTAIN ALKOXYSILANE GROUPS, COMPRISING REACTING IN THE PRESENCE OF 10 TO 80% BY WEIGHT BASED ON THE SUM OF THE REACTANTS OF A SECONDARY OR TERTIARY ALCOHOL AT A TEMPERATURE BETWEEN -20*C AND + 150*C AN ALKOXYSILANE GROUP OF THE GENERAL FORMULA
Claim 3
Dependent Claim
39 words
A process according to claim 1 characterized in that the reaction is carried out with polyhydroxyl compounds or polyamines containing at least two hydrogen atoms that are reactive with isocyanates and having a molecular weight of 62 to 6000.
Claim 4
Dependent Claim
28 words
A process according to claim 1 wherein the secondary and tertiary alcohols are selected from the group consisting of isopropanol, isobutanol, cyclohexanol, tertiary amyl alcohol and tertiary butanol.
Claim 5
Dependent Claim
33 words
A process according to claim 1 wherein the reaction mixtures includes 2 to 60% by weight based on the quantity of the alkoxysilane present an amino alkyl silane derivative comprising the general formula
Claim 6
Dependent Claim
33 words
A process according to claim 1 wherein the reaction mixtures includes 2 to 60% by weight based on the quantity of the alkoxysilane present an amino alkyl silane derivative comprising the general formula.
References Cited (Backward Citations)
GB1207594A
Cited
US3632557A
Cited
US3576033A
Cited
US3726907A
Cited
US3676478A
Cited
US3657303A
Cited
US3711442A
Cited
US3627722A
Cited
US3711445A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-12-23 | 1978-06-24 | 1978-12-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-12-23 | 1982-06-24 | 1982-12-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-12-23 | 1986-06-24 | 1986-12-24 | $7700.00 | Window Closed / Lapsed |