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US4376192A
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Room temperature-curable organopolysiloxane compositions
Assignee: Shin-Etsu Chemical Co Ltd
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Filing: 1982-03-15
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Granted: 1983-03-08
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Expires: 2002-03-15
Abstract
Abstract The invention provides a novel room temperature-curable organopolysiloxane composition useful as an adhesive or a sealing material with remarkably extended workable time owing to the delayed surface filming. The base component in the composition is a conventional diorganopolysiloxane terminated with hydroxy groups at both molecular chain ends admixed with several known ingredients such as a cross linking agent, curing catalyst, filler and the like. The most characteristic ingredient in the composition effective to achieve the above mentioned desired property is a 1,1,1-trimethyl-3-hydrocarbyl-3,3-di(acylamino)disiloxane which belongs to a novel class of organopolysiloxane compounds and method is described for the preparation of these siloxane compounds.
Inventors
- 👤 Toshio Takago
- 👤 Masatoshi Arai
- 👤 Takeo Inoue
- 👤 Masami Terashima
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 20:11
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/54; C08L; C08L83/00; C08L83/04; C08L83/08; C08G; C08G77/00; C08G77/04; C08G77/14; C08G77/16; C08G77/22; C08G77/26; Y; Y10; Y10S; Y10S528/00; Y10S528/901
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
376 words
A room temperature-curable organopolysiloxane composition which comprises (a) 100 parts by weight of a diorganopolysiloxane having a substantially linear molecular structure with silanolic hydroxy groups as the terminal groups at both molecular chain ends expressed by the general formula ##STR17## in which R is a monovalent hydrocarbon group and n is a positive integer giving the degree of polymerization of the di organopolysiloxane, (b) from 1 to 20 parts by weight of a 1,1,1-trimethyl-3-hydrocarbyl-3,3-di(acylamino)disiloxane represented by the general formula ##STR18## in which Me is a methyl group, R 1 is a hydrogen atom or an alkyl or aryl group, R 2 is an alkyl or aryl group and R 3 is an alkyl group having from 1 to 4 carbon atoms, vinyl group or phenyl group, (c) from 0.1 to 10 parts by weight of an aminoxy-containing organopolysiloxane expressed by the average unit formula ##EQU3## in which R has the same meaning as defined above, Y is a mono- or di(hydrocarbyl)-substituted aminoxy group, a is a positive number in the range from 0.5 to 2.96 inclusive and b is a positive number in the range from 0.04 to 10 inclusive with the proviso that a+b is in the range from 1 to 3 inclusive, (d) from 0.01 to 5 parts by weight of an organopolysiloxane expressed by the average unit formula ##EQU4## in which R and Y each have the same meaning as defined above, X is a group represented by the general formula ##STR19## R 4 being a monovalent hydrocarbon group free from aliphatic unsaturation, R 5 being a hydrogen atom or a monovalent hydrocarbon group free from aliphatic unsaturation, R 6 being a divalent hydrocarbon group having at least 2 carbon atoms and R 7 being a divalent hydrocarbon group having 4 to 8 carbon atoms, c is a positive number in the range from 0.5 to 2.96 inclusive, d is a positive number in the range from 0.03 to 1.0 inclusive and e is a positive number in the range from 0.01 to 1.0 inclusive with the proviso that c+d+e is in the range from 1 to 3 inclusive, (e) from 0.001 to 5 parts by weight of a curing catalyst, and (f) from 1 to 400 parts by weight of a filler.
Claim 2
Dependent Claim
376 words
A room temperature-curable organopolysiloxane composition which comprises (a) 100 parts by weight of a diorganopolysiloxane having a substantially linear molecular structure with silanolic hydroxy groups as the terminal groups at both molecular chain ends expressed by the general formula ##STR17## in which R is a monovalent hydrocarbon group and n is a positive integer giving the degree of polymerization of the di organopolysiloxane, (b) from 1 to 20 parts by weight of a 1,1,1-trimethyl-3-hydrocarbyl-3,3-di(acylamino)disiloxane represented by the general formula ##STR18## in which Me is a methyl group, R 1 is a hydrogen atom or an alkyl or aryl group, R 2 is an alkyl or aryl group and R 3 is an alkyl group having from 1 to 4 carbon atoms, vinyl group or phenyl group, (c) from 0.1 to 10 parts by weight of an aminoxy-containing organopolysiloxane expressed by the average unit formula ##EQU3## in which R has the same meaning as defined above, Y is a mono- or di(hydrocarbyl)-substituted aminoxy group, a is a positive number in the range from 0.5 to 2.96 inclusive and b is a positive number in the range from 0.04 to 10 inclusive with the proviso that a+b is in the range from 1 to 3 inclusive, (d) from 0.01 to 5 parts by weight of an organopolysiloxane expressed by the average unit formula ##EQU4## in which R and Y each have the same meaning as defined above, X is a group represented by the general formula ##STR19## R 4 being a monovalent hydrocarbon group free from aliphatic unsaturation, R 5 being a hydrogen atom or a monovalent hydrocarbon group free from aliphatic unsaturation, R 6 being a divalent hydrocarbon group having at least 2 carbon atoms and R 7 being a divalent hydrocarbon group having 4 to 8 carbon atoms, c is a positive number in the range from 0.5 to 2.96 inclusive, d is a positive number in the range from 0.03 to 1.0 inclusive and e is a positive number in the range from 0.01 to 1.0 inclusive with the proviso that c+d+e is in the range from 1 to 3 inclusive, (e) from 0.001 to 5 parts by weight of a curing catalyst, and (f) from 1 to 400 parts by weight of a filler.
Claim 3
Dependent Claim
31 words
The room temperature-curable organopolysiloxane composition as claimed in claim 1 wherein the diorganopolysiloxane as the component (a) has a viscosity in the range from 100 to 10,000,000 centistokes at 25° C.
Claim 4
Dependent Claim
23 words
The room temperature-curable organopolysiloxane composition as claimed in claim 1 wherein the monovalent hydrocarbon group denoted by R 1 is a methyl group.
Claim 5
Dependent Claim
24 words
The room temperature-curable organopolysiloxane composition as claimed in claim 1 wherein the group denoted by R 2 is a methyl or an ethyl group.
Claim 6
Dependent Claim
25 words
The room temperature-curable organopolysiloxane composition as claimed in claim 1 wherein the alkyl group denoted by R 3 is a methyl or an ethyl group.
Claim 7
Dependent Claim
29 words
The room temperature-curable organopolysiloxane composition as claimed in claim 1 wherein the divalent hydrocarbon group denoted by R 6 is an alkylene group having at least two carbon atoms.
Claim 8
Dependent Claim
33 words
The room temperature-curable organopolysiloxane composition as claimed in claim 1 wherein the component (d) has at least one group denoted by X and at least three groups denoted by Y in a molecule.
Claim 9
Dependent Claim
36 words
The room temperature-curable organopolysiloxane composition as claimed in claim 1 wherein the total amount of the components (c) and (d) does not exceed 10 parts by weight per 100 parts by weight of the component (a).
Claim 10
Dependent Claim
54 words
A 1,1,1-trimethyl-3-hydrocarbyl-3,3-di(acylamino)disiloxane represented by the general formula ##STR20## in which Me is a methyl group, R 1 is a hydrogen atom or an alkyl or aryl group, R 2 is an alkyl or aryl group and R 3 is an alkyl group having from 1 to 4 carbon atoms, vinyl group or phenyl group.
Claim 11
Dependent Claim
54 words
A 1,1,1-trimethyl-3-hydrocarbyl-3,3-di(acylamino)disiloxane represented by the general formula ##STR20## in which Me is a methyl group, R 1 is a hydrogen atom or an alkyl or aryl group, R 2 is an alkyl or aryl group and R 3 is an alkyl group having from 1 to 4 carbon atoms, vinyl group or phenyl group.
References Cited (Backward Citations)
US2919173A
Cited
US3674738A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-03-07 | 1986-09-06 | 1987-03-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-03-07 | 1990-09-06 | 1991-03-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-03-07 | 1994-09-06 | 1995-03-08 | $7700.00 | Window Closed / Lapsed |