Patent US4718944A successfully refreshed from Google Patents.
US4718944A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coupling agent compositions
Assignee: Dow Silicones Corp
•
Filing: 1986-10-07
•
Granted: 1988-01-12
•
Expires: 2006-10-07
Abstract
Abstract A coupling agent composition comprised of the reaction product of (a) about two mole parts of maleic anhydride with (b) about one mole part of a diamine functional silane compound of the general formula <IMAGE> where R denotes an alkyl radical, R' denotes an alkyl radical, R'' and R''' denote alkylene radicals and x is 0 or 1; and (c) sufficient solvent to solubilize (a) and (b).
Inventors
- 👤 Edwin P. Plueddemann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 10:11
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/54; C08K5/544; C08K5/5455; C07; C07F; C07F7/00; C07F7/02; C07F7/08; C07F7/18; C07F7/1804
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
102 words
A composition comprising: (A) the reaction product of about (i) 1.7 to 2 mole parts maleic anhydride with (ii) 1 mole part of a silane represented by the general formula ##STR4## where R denotes an alkyl radical with 1 to 6 carbon atoms or an alkoxyalkyl radical with 2 to 8 carbons, R' denotes an alkyl radical with 1 to 6 carbon atoms, R" and R'" denote alkylene radicals with 1 to 6 carbon atoms, or alkylarylene radicals, arylalkylene radicals, or arylene radicals with 6 to 10 carbon atoms and x is 0 or 1, and (B) sufficient solvent to solubilize (A).
Claim 2
Dependent Claim
102 words
A composition comprising: (A) the reaction product of about (i) 1.7 to 2 mole parts maleic anhydride with (ii) 1 mole part of a silane represented by the general formula ##STR4## where R denotes an alkyl radical with 1 to 6 carbon atoms or an alkoxyalkyl radical with 2 to 8 carbons, R' denotes an alkyl radical with 1 to 6 carbon atoms, R" and R'" denote alkylene radicals with 1 to 6 carbon atoms, or alkylarylene radicals, arylalkylene radicals, or arylene radicals with 6 to 10 carbon atoms and x is 0 or 1, and (B) sufficient solvent to solubilize (A).
Claim 3
Dependent Claim
11 words
The composition of claim 1 wherein the silane (ii) is N-(aminoethyl)-3-aminopropyltrimethoxysilane.
Claim 4
Dependent Claim
26 words
The composition of claim 1 wherein the solvent is chosen from the group consisting of butyrolacetone, 2-nitropropane, dimethylformamide, t-butanol, methyl butenol, methylbutynol, isopropanol, diethylcarbonate, and methylpyrrolidone.
Claim 5
Dependent Claim
10 words
The composition of claim 1 wherein the solvent is water.
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) | 1991-01-11 | 1991-07-13 | 1992-01-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-01-11 | 1995-07-13 | 1996-01-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-01-11 | 1999-07-13 | 2000-01-12 | $7700.00 | Window Closed / Lapsed |