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US4471007A
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Method for improving the adhesion of amine-containing organopolysiloxane compositions
Assignee: Wacker Chemical Corp
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Filing: 1983-04-01
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Granted: 1984-09-11
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Expires: 2003-04-01
Abstract
Abstract A method for improving the adhesion of an amine-containing organopolysiloxane composition to a substrate which comprises coating the substrate with an amine-containing organopolysiloxane composition and thereafter heating the coated substrate to an elevated temperature prior to or during exposure to moisture and carbon dioxide in excess of that present in the atmosphere.
Inventors
- 👤 Michelle D. Pate
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 23:07
CPC Classifications
B; B05; B05D; B05D3/00; B05D3/04; C; C08; C08L; C08L83/00; C08L83/04; C08G; C08G77/00; C08G77/04; C08G77/14; C08G77/16
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
106 words
A method for improving the adhesion of an amine-containing organopolysiloxane composition to a substrate which comprises heating a substrate coated with a composition containing an organopolysiloxane having reactive groups and an amine-substituted silicon compound capable of cross-linking with the organopolysiloxane and having an average of at least three Si-bonded --NR 2 groups per molecule, where R is selected from the group consisting of hydrogen and a monovalent hydrocarbon radical having up to 18 carbon atoms in the presence of moisture and at a temperature of from about 50° C. and thereafter exposing the coated substrate to carbon dioxide in excess of that present in the atmosphere.
Claim 2
Independent Claim
106 words
A method for improving the adhesion of an amine-containing organopolysiloxane composition to a substrate which comprises heating a substrate coated with a composition containing an organopolysiloxane having reactive groups and an amine-substituted silicon compound capable of cross-linking with the organopolysiloxane and having an average of at least three Si-bonded --NR 2 groups per molecule, where R is selected from the group consisting of hydrogen and a monovalent hydrocarbon radical having up to 18 carbon atoms in the presence of moisture and at a temperature of from about 50° C. and thereafter exposing the coated substrate to carbon dioxide in excess of that present in the atmosphere.
Claim 3
Dependent Claim
27 words
The method of claim 1, wherein the coated substrate is simultaneously heated and exposed to moisture and carbon dioxide in excess of that present in the atmosphere.
Claim 4
Dependent Claim
71 words
The method of claim 1, wherein the amine-substituted silicon compound is an aminosilane of the formula R.sup.1.sub.4-z Si(NR.sub.2).sub.z where R is selected from the group consisting of hydrogen and a monovalent hydrocarbon radical having from 1 to 18 carbon atoms in which only one R can be hydrogen, R 1 is a monovalent hydrocarbon radical having from 1 to 18 carbon atoms, and z has an average of at least three.
Claim 5
Dependent Claim
109 words
The method of claim 1, wherein the amino-substituted silicon compound is an aminosiloxane of the formula ##STR4## where R' is selected from the group consisting of a monovalent hydrocarbon radical and a substituted monovalent hydrocarbon radical, R is selected from the group consisting of hydrogen and a monovalent hydrocarbon radical having from 1 to 18 carbon atoms, R 1 is a monovalent hydrocarbon radical having from 1 to 18 carbon atoms, m is a number of from 0 to 50, v is a number of from 0 to 3, w is a number of from 0 to 3 and the sum of v+w is equal to at least 3.
Claim 6
Dependent Claim
18 words
The method of claim 1, wherein the substrate is heated to a temperature of at least 50° C.
Claim 7
Dependent Claim
18 words
The method of claim 2, wherein the substrate is heated to a temperature of at least 50° C.
Claim 8
Dependent Claim
19 words
The method of claim 1, wherein the substrate is heated to a temperature of from 80° to 150° C.
Claim 9
Dependent Claim
19 words
The method of claim 2, wherein the substrate is heated to a temperature of from 80° to 150° C.
Claim 10
Dependent Claim
11 words
The method of claim 1, wherein only one R is hydrogen.
Claim 11
Dependent Claim
11 words
The method of claim 4, wherein only one R is hydrogen.
Claim 12
Independent Claim
114 words
A method for improving the adhesion of an amine-containing organopolysiloxane composition to a substrate which comprises mixing under anhydrous conditions an organopolysiloxane containing reactive groups with an amine-substituted silicon compound capable of cross-linking with the organopolysiloxane and having an average of at least three Si-bonded NR 2 groups per molecule, where R is selected from the group consisting of hydrogen and a monovalent hydrocarbon radical having from 1 to 18 carbon atoms, coating a substrate with the mixture, then heating the coated substrate in the presence of moisture and at a temperature of from about 50° C. and thereafter exposing the coated substrate to carbon dioxide in excess of that present in the atmosphere.
Claim 13
Independent Claim
114 words
A method for improving the adhesion of an amine-containing organopolysiloxane composition to a substrate which comprises mixing under anhydrous conditions an organopolysiloxane containing reactive groups with an amine-substituted silicon compound capable of cross-linking with the organopolysiloxane and having an average of at least three Si-bonded NR 2 groups per molecule, where R is selected from the group consisting of hydrogen and a monovalent hydrocarbon radical having from 1 to 18 carbon atoms, coating a substrate with the mixture, then heating the coated substrate in the presence of moisture and at a temperature of from about 50° C. and thereafter exposing the coated substrate to carbon dioxide in excess of that present in the atmosphere.
Claim 14
Dependent Claim
27 words
The method of claim 11, wherein the coated substrate is heated in the presence of moisture and carbon dioxide in excess of that present in the atmosphere.
Claim 15
Dependent Claim
11 words
The method of claim 11, wherein only one R is hydrogen.
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) | 1987-09-11 | 1988-03-12 | 1988-09-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-09-11 | 1992-03-12 | 1992-09-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-09-11 | 1996-03-12 | 1996-09-11 | $7700.00 | Window Closed / Lapsed |