US3715377A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of organosilicone esters
Assignee: General Electric Co
•
Filing: 1971-12-16
•
Granted: 1973-02-06
•
Expires: 1991-12-16
Abstract
Abstract A process for forming an organosilicone ester which comprises reacting a carboxysilicone and an alcohol in the presence of a sorbent-acid catalyst system.
Inventors
- 👤 G Siciliano
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 08:04
CPC Classifications
C; C10; C10M; C10M3/00; C08; C08G; C08G77/00; C08G77/04; C08G77/38; C10M2229/00; C10M2229/04; C10M2229/045; C10M2229/046; C10M2229/047; C10M2229/048; C10M2229/05; C10M2229/051; C10M2229/052; C10N; C10N2040/00; C10N2040/08
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
134 words
In the process of preparing an organosilicone ester by reacting a carboxysilicone containing in its molecule at least one unit of the formula: wherein R is selected from monovalent hydrocarbon radicals, halogenated monovalent hydrocarbon radicals, and monovalent cyanoalkyl radicals; R'' is selected from divalent hydrocarbon radicals, halogenated divalent hydrocarbon radicals, and divalent hydrocarbon radicals containing at least one ether linkage; and n varies from 0 to 3; and an alcohol selected from the group consisting of wherein R2 is a monovalent hydrocarbon radical, R3 is a divalent hydrocarbon radical; Rs is a polyvalent hydrocarbon radical with s plus 1 hydroxyl group attached thereto, and s is a whole number that varies from 1 to 5; the improvement which comprises conducting the reaction in the presence of an effective catalytic amount of sorbent-acid catalyst system.
Claim 2
Dependent Claim
134 words
In the process of preparing an organosilicone ester by reacting a carboxysilicone containing in its molecule at least one unit of the formula: wherein R is selected from monovalent hydrocarbon radicals, halogenated monovalent hydrocarbon radicals, and monovalent cyanoalkyl radicals; R'' is selected from divalent hydrocarbon radicals, halogenated divalent hydrocarbon radicals, and divalent hydrocarbon radicals containing at least one ether linkage; and n varies from 0 to 3; and an alcohol selected from the group consisting of wherein R2 is a monovalent hydrocarbon radical, R3 is a divalent hydrocarbon radical; Rs is a polyvalent hydrocarbon radical with s plus 1 hydroxyl group attached thereto, and s is a whole number that varies from 1 to 5; the improvement which comprises conducting the reaction in the presence of an effective catalytic amount of sorbent-acid catalyst system.
Claim 3
Dependent Claim
39 words
The process of claim 1 wherein said carboxysilicone is a polysiloxane polymer of the formula: wherein a varies from 1.1 to 2.02 and b varies from 0.023 to 1.00 and the sum of a+b varies from 2.024 to 3.00.
Claim 4
Dependent Claim
65 words
The process of claim 1 wherein said carboxysilicone is a polysiloxane polymer of the formula: wherein each R'''''' individually is selected from the group of monovalent hydrocarbon radicals and halogenated monovalent hydrocarbon radicals; each R'''' individually is selected from the group of R'''''' and -CgH2gCN wherein x varies from 1 to 10; y varies from 1 to 15, and g varies from 1 to 20.
Claim 5
Dependent Claim
87 words
The process of claim 3 wherein R'' is -CgH2g and said polysiloxane polymer is obtained by reacting in the presence of water a diorganosilane of the formula: R2''''''SiX2 with a cyanoalkylsilane of the formula: R''''''Si(X2)CgH2gCN and a silane of the formula: R''''R2''''''SiX where R'''''' is selected from monovalent hydrocarbon radicals and halogenateD monovalent hydrocarbon radicals, R'''' is the same as R'''''' or -CgH2gCN, X is a hydrolyzable radical selected from halogen, alkoxy, aryloxy, and acyloxy radicals, g is a whole number that varies from 1 to 20.
Claim 6
Dependent Claim
95 words
The process of claim 3 wherein R'' is CgH2g and said polysiloxane polymer is obtained by reacting in the presence of a strong base catalyst a cyclopolysiloxane of the formula: (R2''''''SiO)a with a cyclopolysiloxane of the formula: R''''''(NCCgH2g)SiOb with a disiloxane of the formula: (R''''R2''''''Si)2O so as to equilibrate the reactants where R'''''' is selected from monovalent hydrocarbon radicals and halogenated monovalent hydrocarbon radicals, R'''' is the same as R'''''' or -CgH2g-CN, g is a whole number that varies from 1 to 20, a and b are whole numbers that vary from 3 to 10.
Claim 7
Dependent Claim
17 words
The process of claim 3 wherein R'' is -CgH2g and g is equal to 3 or 4.
Claim 8
Dependent Claim
12 words
The process of claim 1 wherein said alcohol is methanol or methoxyethanol.
Claim 9
Dependent Claim
34 words
The process of claim 1 wherein said acid is selected from the group of sulfuric acid, sulfurous acid, hydrochloric acid, benzene sulfonic acid, benzene disulfonic acid, toluene-sulfonic acids, xylene-sulfonic acids, and trifluoromethyl sulfonic acid.
Claim 10
Dependent Claim
19 words
The process of claim 8 wherein said sorbent is selected from the group of siliceous material and carbonaceous material.
Claim 11
Dependent Claim
19 words
The process of claim 1 wherein said sorbent is selected from the group of siliceous material and carbonaceous material.
Claim 12
Dependent Claim
11 words
The process of claim 10 wherein said acid is sulfuric acid.
Claim 13
Dependent Claim
12 words
The process of claim 10 wherein said acid is paratoluene sulfonic acid.
Claim 14
Dependent Claim
11 words
The process of claim 1 wherein said sorbent is activated carbon.
Claim 15
Dependent Claim
34 words
The process of claim 1 wherein the amount of catalyst is from about 0.1 percent by weight of acid to about 10 percent by weight of acid based upon the weight of the reactants.
Claim 16
Dependent Claim
34 words
The process of claim 1 wherein the catalyst is a sorbent-acid system which contains from about 0.02 parts by weight to about 2 parts by weight of acid per part by weight of sorbent.
Claim 17
Dependent Claim
12 words
The process of claim 1 wherein an inert organic diluent is used.
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) | 1976-02-06 | 1976-08-07 | 1977-02-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-02-06 | 1980-08-07 | 1981-02-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-02-06 | 1984-08-07 | 1985-02-06 | $7700.00 | Window Closed / Lapsed |