US5026813A
Expired / Lapsed
US
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Polysilsequioxane and polymethyl-N-hexylsilsesquioxane coating compositions
Assignee: Lockheed Martin Corp
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Filing: 1989-12-27
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Granted: 1991-06-25
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Expires: 2009-12-27
Abstract
Abstract 102 composition. The coating composition of the present invention is a moisture-curable polymethyl-n-hexylsilsesquioxane having a partially water-hydrolyzed, silane catalyst-containing condensation product of n-hexyltrimethoxysilane and methyltrimethoxysilane, the silane catalyst having at least one aminoalkyl-substituted group and at least one alkoxy-substituted group having at least 2 carbon atoms in the alkoxy group. The silane catalyst is also a co-curing agent and condenses with the n-hexyltrimethoxysilane and the methyltrimethoxysilane.
Inventors
- 👤 Martin G. Meder
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 17:33
CPC Classifications
C; C09; C09D; C09D183/00; C09D183/04; C09D4/00
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
114 words
A moisture-curable polysilsesquioxane comprising a partially water-hydrolyzed, silane catalyst-containing, condensation product of about 10 to about 50 mole percent trimethoxysilane having substituted thereon a lower alkyl group containing 1 to about 9 carbon atoms, a halo lower alkyl group containing 1 to about 9 carbon atoms, a phenyl group or a substituted phenyl group, and about 50 to about 90 mole percent methyltrimethoxysilane, the silane catalyst having at least one aminoalkyl-substituted group, at least one alkoxy-substituted group having at least 2 carbon atoms in the alkoxy group and optionally, an alkyl group, whereby the silane catalyst is a co-curing agent and condenses with the methyltrimethoxysilane and with the trimethoxysilane having the substituted group thereon.
Claim 2
Dependent Claim
114 words
A moisture-curable polysilsesquioxane comprising a partially water-hydrolyzed, silane catalyst-containing, condensation product of about 10 to about 50 mole percent trimethoxysilane having substituted thereon a lower alkyl group containing 1 to about 9 carbon atoms, a halo lower alkyl group containing 1 to about 9 carbon atoms, a phenyl group or a substituted phenyl group, and about 50 to about 90 mole percent methyltrimethoxysilane, the silane catalyst having at least one aminoalkyl-substituted group, at least one alkoxy-substituted group having at least 2 carbon atoms in the alkoxy group and optionally, an alkyl group, whereby the silane catalyst is a co-curing agent and condenses with the methyltrimethoxysilane and with the trimethoxysilane having the substituted group thereon.
Claim 3
Dependent Claim
70 words
The moisture-curable polysilsesquioxane of claim 1, wherein the silane catalyst has the formula: (H.sub.2 N--R''').sub.a (R').sub.4-a-b -Si-(OR").sub.b wherein R''' is an amino-substituted functional group; R' is an alkyl group having from 1 to about 4 carbon atoms; R" is an alkyl group having at lest 2 carbon atoms; R''', R' and R'' can be the same or different; and a and b are each an integer from 1 to 3.
Claim 4
Dependent Claim
31 words
The moisture-curable polysilsesquioxane of claim 2, wherein the amino-substituted functional group represented by R" ' is selected from the group consisting of 3-aminopropyl, 4-aminobutyl, N-(2-aminoethyl)-3-aminopropyl, 6-aminohexylaminopropyl, p-aminophenyl, 3-(1-aminopropoxy)-3,3-dimethyl-1-propenyl, diethylenetriamine, and aminoethylaminomethylphenyl.
Claim 5
Dependent Claim
12 words
The moisture-curable polysilsesquioxane of claim 1, wherein the silane catalyst is aminopropylmethyldiethoxysilane.
Claim 6
Dependent Claim
12 words
The moisture-curable polysilsesquioxane of claim 1, wherein the silane catalyst is aminopropyltriethoxysilane.
Claim 7
Dependent Claim
33 words
The moisture-curable polysilsesquioxane of claim 1, having about 0.5 percent to bout 5.0 percent by weight silane catalyst based on the total weight of the trimethoxysilane, methyltrimethoxysilane and water used for water hydrolysis.
Claim 8
Dependent Claim
33 words
The moisture-curable polysilsesquioxane of claim 6, having about 1.0 percent to bout 2.0 percent by weight silane catalyst based on the total weight of the trimethoxysilane, methyltrimethoxysilane and water used for water hydrolysis.
Claim 9
Dependent Claim
12 words
The moisture-curable polysilsesquioxane of claim 1 further comprising a nonionic fluorochemical surfactant.
Claim 10
Dependent Claim
16 words
The moisture-curable polysilsesquioxane of claim 8, wherein the surfactant comprises a mixture of fluorinated alkyl esters.
Claim 11
Dependent Claim
35 words
The moisture-curable polysilsesquioxane of claim 1, wherein the water-hydrolyzed, silane catalyst-containing condensation product contains about 15 mole percent to about 25 mole percent trimethoxysilane and about 75 mole percent to about 85 mole percent methyltrimethoxysilane.
Claim 12
Dependent Claim
10 words
The moisture-curable polysilsesquioxane of claim 1, further comprising a pigment.
Claim 13
Dependent Claim
16 words
The moisture-curable polysilsesquioxane of claim 1 wherein the trimethoxysilane having a substituted group thereon is n-hexyltrimethoxysilane.
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| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 3.5 Years (Year 4) | 1994-06-24 | 1994-12-24 | 1995-06-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-06-24 | 1998-12-24 | 1999-06-25 | $3760.00 | Window Closed / Lapsed |
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