US4970097A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for forming abrasion resistant coating on fibrous glass substrate
Assignee: Advanced Glassfiber Yarns LLC
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Filing: 1989-03-16
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Granted: 1990-11-13
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Expires: 2009-03-16
Abstract
Abstract Fibrous glass substrates are coated with a substantially unhydrolyzed, hydrolyzable mixture of a silicon alkoxide and a titanium alkoxide and the coating is then hydrolyzed and cured. This provides the glass substrate with a long flex-life, abrasion resistant coating making the fibers of utility for use in forming filter bags.
Inventors
- 👤 Marie R. Kalinowski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 20:20
CPC Classifications
B; B01; B01D; B01D39/00; B01D39/08; B01D39/086; C; C03; C03C; C03C25/00; C03C25/10; C03C25/42; B01D2239/00; B01D2239/04; B01D2239/0471; B01D2239/0478; B01D2239/06; B01D2239/0604; B01D2239/0618; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2913; Y10T428/2933; Y10T428/294; Y10T428/2956; Y10T442/00; Y10T442/20; Y10T442/2631; Y10T442/273
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
90 words
A method for forming high temperature resistant, abrasion resistant long flex-life coating on fibrous glass substrate comprising: providing an organic solvent solution of an hydrolyzable mixture of a silicon alkoxide and a titanium alkoxide, said solution having a molarity of about 0.5; coating a fibrous glass surface with said solution; air drying said coated surface for a sufficient period of time to allow the moisture in the air to at least partially hydrolyze said alkoxides; curing said hydrolyzed alkoxides by heating in air at a temperature of about 425° C.
Claim 2
Independent Claim
90 words
A method for forming high temperature resistant, abrasion resistant long flex-life coating on fibrous glass substrate comprising: providing an organic solvent solution of an hydrolyzable mixture of a silicon alkoxide and a titanium alkoxide, said solution having a molarity of about 0.5; coating a fibrous glass surface with said solution; air drying said coated surface for a sufficient period of time to allow the moisture in the air to at least partially hydrolyze said alkoxides; curing said hydrolyzed alkoxides by heating in air at a temperature of about 425° C.
Claim 3
Dependent Claim
17 words
The method of claim 1 wherein the molar ratio of said mixture of alkoxides is about 1:1.
Claim 4
Dependent Claim
18 words
The method of claim 2 wherein each of said alkoxides is a C 1 to C 5 alkoxide.
Claim 5
Dependent Claim
11 words
The method of claim 3 wherein said silicon alkoxide is tetraethyoxysilane.
Claim 6
Dependent Claim
12 words
The method of claim 4 wherein said titanium alkoxide is titanium tetraisopropoxide.
Claim 7
Dependent Claim
24 words
The method of claim 1 wherein said solution contains decanoic acid in an amount sufficient to inhibit the hydrolysis rate of said titanium alkoxide.
Claim 8
Dependent Claim
25 words
The method of claim 1 wherein prior to said air heating at about 425° F., said hydrolyzed alkoxides are partially cured in a microwave oven.
Claim 9
Dependent Claim
14 words
The method of claim 1 wherein said fibrous glass is a magnesia aluminosilicate glass.
Claim 10
Dependent Claim
27 words
The method of claim 1 wherein said organic solvent solution is a clear solution of an unhydrolyzed, hydrolyzable mixture of said silicon alkoxide and said titanium alkoxide.
Claim 11
Dependent Claim
12 words
The method of claim 1 wherein said mixture is an unhydrolyzed mixture.
Claim 12
Dependent Claim
8 words
The product of the process of claim 1.
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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) | 1993-11-12 | 1994-05-14 | 1994-11-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-11-12 | 1998-05-14 | 1998-11-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-11-12 | 2002-05-14 | 2002-11-13 | $7700.00 | Window Closed / Lapsed |