US3948964A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stabilization of partially hydrolyzed silicic acid esters
Assignee: Dynamit Nobel AG
•
Filing: 1973-11-16
•
Granted: 1976-04-06
•
Expires: 1993-11-16
Abstract
Abstract A stabilized hydrolyzed silicic acid ester composition comprising a hydrolyzed silicic acid ester in which is dissolved a stabilizer selected from the group consisting of cyclic ethers, ether alcohols, carboxylic acid esters and ketones.
Inventors
- 👤 Dieter Barfurth
- 👤 Werner Dittrich
- 👤 Heinz Nestler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 18:10
CPC Classifications
C; C04; C04B; C04B35/00; C04B35/622; C04B35/626; C04B35/63; C04B35/6303; C04B35/6316; C07; C07F; C07F7/00; C07F7/02; C07F7/04; C08; C08K; C08K5/00; C08K5/04; C08K5/06; C08K5/07; C08K5/10; C08K5/15; C09; C09D; C09D183/00; C09D183/02
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
100 words
A stabilized silicic acid ester composition comprising a partially hydrolyzed silicic acid ester having between 2 and 10-[Si-O]- groups and, dissolved therein, a stabilizer selected from the group consisted of cyclic ethers containing carbon, hydrogen and oxygen only, ether alcohols having the formula R 1 -O-R 2 -OH in which R 1 and R 2 independently represent alkyl or alkylene radicals having up to 6 carbon atoms, carboxylic acid alkyl esters wherein the alkyl group has 1 to 6 carbon atoms, the carboxylic acid being in dissolved form, and ketones having a chain length of up to 10 carbon atoms.
Claim 2
Dependent Claim
100 words
A stabilized silicic acid ester composition comprising a partially hydrolyzed silicic acid ester having between 2 and 10-[Si-O]- groups and, dissolved therein, a stabilizer selected from the group consisted of cyclic ethers containing carbon, hydrogen and oxygen only, ether alcohols having the formula R 1 -O-R 2 -OH in which R 1 and R 2 independently represent alkyl or alkylene radicals having up to 6 carbon atoms, carboxylic acid alkyl esters wherein the alkyl group has 1 to 6 carbon atoms, the carboxylic acid being in dissolved form, and ketones having a chain length of up to 10 carbon atoms.
Claim 3
Dependent Claim
29 words
A composition according to claim 1 wherein the stabilizer is present in an amount of from 1 to 30% by weight, based upon the weight of the entire composition.
Claim 4
Dependent Claim
28 words
A composition according to claim 2 wherein the stabilizer is present in an amount between 8 and 12% by weight, based upon the weight of the entire composition.
Claim 5
Dependent Claim
88 words
A hydrolyzed silicic acid ester composition consisting essentially of a partially hydrolyzed silicic acid ester and, dissolved therein, a stabilizer selected from the group consisting of cyclic ethers containing carbon, hydrogen and oxygen only, ether alcohols having the formula R 1 -O-R 2 -OH wherein R 1 and R 2 are each independently alkyl or alkylene radicals having up to 6 carbon atoms, carboxylic acid alkyl esters wherein the alkyl portion has 1 to 6 carbon atoms and ketones having up to 10 carbon atoms in the chain.
Claim 6
Dependent Claim
88 words
A hydrolyzed silicic acid ester composition consisting essentially of a partially hydrolyzed silicic acid ester and, dissolved therein, a stabilizer selected from the group consisting of cyclic ethers containing carbon, hydrogen and oxygen only, ether alcohols having the formula R 1 -O-R 2 -OH wherein R 1 and R 2 are each independently alkyl or alkylene radicals having up to 6 carbon atoms, carboxylic acid alkyl esters wherein the alkyl portion has 1 to 6 carbon atoms and ketones having up to 10 carbon atoms in the chain.
Claim 7
Dependent Claim
21 words
A composition according to claim 4 wherein the stabilizer is a cyclic ether having at least 5 atoms in the ring.
Claim 8
Dependent Claim
18 words
A composition according to claim 5 wherein the cyclic ether has at least 6 atoms in the ring.
Claim 9
Dependent Claim
22 words
A composition according to claim 6 wherein the cyclic ether is selected from the group consisting of 1,4-dioxane, 1,3-dioxane, trioxane and dioxolane.
Claim 10
Dependent Claim
29 words
A composition according to claim 5 wherein the cyclic ether is present in an amount between 1 and 30% by weight, based upon the weight of the entire composition.
Claim 11
Dependent Claim
34 words
A composition according to claim 4 wherein the stabilizer is an ether alcohol and the ether alcohol is present in an amount of 1 to 30%, based upon the weight of the entire composition.
Claim 12
Dependent Claim
24 words
A composition according to claim 9 wherein the ether alcohol is selected from the group consisting of 2-methoxybutanol-(1), 2-ethoxyethanol-(1), 4-ethoxybutanol-(1), 2-butoxyethanol-(1), 6-ethoxyhexanol-(1) and 5-isobutoxypentanol-(1).
Claim 13
Dependent Claim
50 words
A composition according to claim 4 wherein the stabilizer is a carboxylic acid ester wherein the acid is a C 1 to C 4 aliphatic carboxylic acid, said carboxylic acid ester being present in an amount from 1 to 30% by weight, based upon the weight of the entire composition.
Claim 14
Dependent Claim
23 words
A composition according to claim 11 wherein the carboxylic acid ester is selected from the group consisting of ethylacetate, butylacetate, ethylpropionate and 2-ethoxyethylacetate.
Claim 15
Dependent Claim
34 words
A composition according to claim 4 wherein the stabilizer is a ketone and the ketone is present in an amount from 1 to 30% by weight, based upon the weight of the entire composition.
Claim 16
Dependent Claim
27 words
A composition according to claim 13 wherein the ketone is selected from the group consisting of methylethyl ketone, methylisobutyl ketone, diethyl ketone, di-n-propyl ketone and diisobutyl ketone.
Claim 17
Dependent Claim
28 words
A composition according to claim 4 wherein the stabilizer is present in an amount from 8 to 12% by weight, based upon the weight of the entire composition.
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) | 1979-04-06 | 1979-10-06 | 1980-04-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-04-06 | 1983-10-06 | 1984-04-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-04-06 | 1987-10-06 | 1988-04-06 | $7700.00 | Window Closed / Lapsed |