US4191585A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Alkali resistant glass article and method of preparation
Assignee: Johns Manville Corp
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Filing: 1978-06-26
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Granted: 1980-03-04
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Expires: 1998-06-26
Abstract
Abstract Alkali resistant glass articles are disclosed comprising glass fibers coated with zinc stearate. The coating will be present as 1 to 50, preferably 3 to 10, percent by weight of the coated fiber. The zinc stearate may be applied as a powder and converted to a coating by heating, or may be applied to the fibers from a water suspension.
Inventors
- 👤 Karlis L. Jaunarajs
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 14:14
CPC Classifications
C; C03; C03C; C03C25/00; C03C25/10; C03C25/1025; C03C25/103; C03C25/24; C03C25/255; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2913; Y10T428/2933; Y10T428/2964
Claims Analysis
Total Claims: 24
Claim 1
Independent Claim
35 words
A glass fiber article having enhanced alkali resistance which comprises glass fiber coated with zinc stearate, said zinc stearate being present in an amount of from 1 to 50 percent by weight of coated fiber.
Claim 2
Dependent Claim
35 words
A glass fiber article having enhanced alkali resistance which comprises glass fiber coated with zinc stearate, said zinc stearate being present in an amount of from 1 to 50 percent by weight of coated fiber.
Claim 3
Dependent Claim
26 words
An article as in claim 1 wherein said zinc stearate is present in an amount of from 3 to 10 percent by weight of coated fiber.
Claim 4
Dependent Claim
20 words
An article as in claim 1 wherein said glass fiber is formed from a composition having relatively low alkali resistance.
Claim 5
Dependent Claim
17 words
An article as in claim 3 wherein said glass fiber is formed from an "E glass" composition.
Claim 6
Dependent Claim
20 words
An article as in claim 1 wherein said glass fiber is formed from a composition having relatively high alkali resistance.
Claim 7
Dependent Claim
39 words
A reinforced article comprising an alkaline cementitious matrix having suspended therethrough glass fiber coated with zinc stearate, said zinc stearate being present on said fiber in an amount of from 1 to 50 percent by weight of coated fiber.
Claim 8
Dependent Claim
39 words
A reinforced article comprising an alkaline cementitious matrix having suspended therethrough glass fiber coated with zinc stearate, said zinc stearate being present on said fiber in an amount of from 1 to 50 percent by weight of coated fiber.
Claim 9
Dependent Claim
26 words
An article as in claim 6 wherein said zinc stearate is present in an amount of from 3 to 10 percent by weight of coated fiber.
Claim 10
Independent Claim
45 words
A method of increasing the alkali resistance of glass fiber which comprises applying to the surface of said glass fiber a coating comprising zinc stearate, said coating containing zinc stearate in an amount of from 1 to 50 percent by weight of the coated fiber.
Claim 11
Independent Claim
45 words
A method of increasing the alkali resistance of glass fiber which comprises applying to the surface of said glass fiber a coating comprising zinc stearate, said coating containing zinc stearate in an amount of from 1 to 50 percent by weight of the coated fiber.
Claim 12
Dependent Claim
24 words
A method as in claim 8 wherein said zinc stearate is present as from 3 to 10 percent by weight of the coated fiber.
Claim 13
Dependent Claim
30 words
A method as in claim 8 wherein said zinc stearate is applied as a powder to said surface and then melted to cause it to flow and form said coating.
Claim 14
Dependent Claim
19 words
A method as in claim 8 wherein said zinc stearate is deposited on said surface from a water suspension.
Claim 15
Dependent Claim
25 words
A method as in claim 11 wherein said zinc stearate is present in said water suspension in an amount of from 5 to 450 g/l.
Claim 16
Dependent Claim
25 words
A method as in claim 12 wherein said zinc stearate is present in said water suspension in an amount of from 30 to 70 g/l.
Claim 17
Dependent Claim
41 words
A glass fiber article having enhanced alkali resistance which comprises glass fiber having thereon a coating consisting essentially of zinc stearate, said zinc stearate being present in an amount of from 1 to 50 percent by weight of the coated fiber.
Claim 18
Dependent Claim
41 words
A glass fiber article having enhanced alkali resistance which comprises glass fiber having thereon a coating consisting essentially of zinc stearate, said zinc stearate being present in an amount of from 1 to 50 percent by weight of the coated fiber.
Claim 19
Dependent Claim
26 words
An article as in claim 14 wherein said zinc stearate is present in an amount of from 3 to 10 percent by weight of coated fiber.
Claim 20
Dependent Claim
20 words
An article as in claim 14 wherein said glass fiber is formed from a composition having relatively low alkali resistance.
Claim 21
Dependent Claim
17 words
An article as in claim 16 wherein said glass fiber is formed from an "E glass" composition.
Claim 22
Dependent Claim
20 words
An article as in claim 14 wherein said glass fiber is formed from a composition having relatively high alkali resistance.
Claim 23
Dependent Claim
31 words
An article as in claim 14 wherein said coating further contains a size which does not affect the ability of the zinc stearate to provide alkali resistance to the glass fiber.
Claim 24
Dependent Claim
19 words
A reinforced article comprising an alkaline cementitious matrix having suspended therethrough the coated glass fiber article of claim 14.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1983-03-04 | 1983-09-03 | 1984-03-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-03-04 | 1987-09-03 | 1988-03-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-03-04 | 1991-09-03 | 1992-03-04 | $7700.00 | Window Closed / Lapsed |