US3956353A
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Anionic coupling agents
Assignee: Dow Silicones Corp
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Filing: 1974-07-15
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Granted: 1976-05-11
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Expires: 1994-07-15
Abstract
Abstract Anionic silanes of the formula ##EQU1## are made by reacting silanes of the formula (RO) 3 SiR'(NHCH 2 CH 2 ) n NHCH 2 ##EQU2## with 1 or 2 moles of an anhydride of a 1,2-dicarboxylic acid. A typical compound is ##EQU3## these compounds are used as coupling agents between inorganic substrates and organic resins such as epoxides, phenolic and polyester.
Inventors
- 👤 Edwin P. Plueddemann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 22:29
CPC Classifications
C; C08; C08G; C08G77/00; C08G77/04; C08G77/22; C08G77/26; C07; C07F; C07F7/00; C07F7/02; C07F7/08; C07F7/18; C07F7/1804; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31536
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
80 words
A composition of matter of the formula ##EQU18## in which R is a lower alkyl or lower alkoxyalkyl radical, R' is an alkylene radical of 1 to 6 carbon atoms, Q and Q' are lower alkyl, hydrogen or the group ##EQU19## at least one Q or Q' being the latter group, ##EQU20## group being derived from a 1,2-dicarboxylic anhydride, R" being divalent hydrocarbon, divalent chlorohydrocarbon or a divalent hydrocarbon radical containing one carboxyl group and n is 0 or 1.
Claim 2
Dependent Claim
80 words
A composition of matter of the formula ##EQU18## in which R is a lower alkyl or lower alkoxyalkyl radical, R' is an alkylene radical of 1 to 6 carbon atoms, Q and Q' are lower alkyl, hydrogen or the group ##EQU19## at least one Q or Q' being the latter group, ##EQU20## group being derived from a 1,2-dicarboxylic anhydride, R" being divalent hydrocarbon, divalent chlorohydrocarbon or a divalent hydrocarbon radical containing one carboxyl group and n is 0 or 1.
Claim 3
Dependent Claim
9 words
An aqueous dispersion of the composition of claim 1.
Claim 4
Dependent Claim
17 words
An aqueous dispersion of an alkali metal amine or ammonium salt of the composition of claim 1.
Claim 5
Dependent Claim
9 words
A composition of claim 1 of the formula ##EQU21##
Claim 6
Dependent Claim
9 words
A composition of claim 1 of the formula ##EQU22##
Claim 7
Dependent Claim
9 words
A composition of claim 1 of the formula ##EQU23##
Claim 8
Dependent Claim
9 words
A compound of claim 1 of the formula ##EQU24##
Claim 9
Dependent Claim
9 words
A compound of claim 1 of the formula ##EQU25##
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) | 1979-05-11 | 1979-11-10 | 1980-05-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-05-11 | 1983-11-10 | 1984-05-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-05-11 | 1987-11-10 | 1988-05-11 | $7700.00 | Window Closed / Lapsed |