US4645709A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coated glass fabric
Assignee: EIDP Inc
•
Filing: 1986-05-27
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Granted: 1987-02-24
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Expires: 2006-05-27
Abstract
Abstract A woven glass fabric is provided which contains coatings in sequence of a silicone oil, a particulate solid, and a high molecular weight polytetrafluoroethylene, or an elastomeric fluoropolymer.
Inventors
- 👤 Robert J. Klare
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 10:02
CPC Classifications
C; C03; C03C; C03C25/00; C03C25/10; C03C25/24; C03C25/26; C03C25/28; C03C25/30; C03C25/305; Y; Y10; Y10T; Y10T442/00; Y10T442/20; Y10T442/2213; Y10T442/2369
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
114 words
A composite consisting of woven glass fabric which contains coatings in sequence of (a) a silicone oil present on the glass fabric at a loading of between 3 and 20% by weight based on glass fabric, (b) a particulate organic polymer or inorganic solid in which the particles are less than 0.3 micrometers, present at a loading of between 4 and 14% by weight based on glass fabric, (c)i a high molecular weight polytetrafluoroethylene having an SSG below 2.19, or (c)ii an elastomeric fluoropolymer, or (c)iii a coating made of ci followed by cii, wherein the total loading made up of coating (c) is between 25 and 200% by weight based on glass fabric.
Claim 2
Dependent Claim
114 words
A composite consisting of woven glass fabric which contains coatings in sequence of (a) a silicone oil present on the glass fabric at a loading of between 3 and 20% by weight based on glass fabric, (b) a particulate organic polymer or inorganic solid in which the particles are less than 0.3 micrometers, present at a loading of between 4 and 14% by weight based on glass fabric, (c)i a high molecular weight polytetrafluoroethylene having an SSG below 2.19, or (c)ii an elastomeric fluoropolymer, or (c)iii a coating made of ci followed by cii, wherein the total loading made up of coating (c) is between 25 and 200% by weight based on glass fabric.
Claim 3
Dependent Claim
43 words
The composite of claim 1 wherein the total loading of coatings (a) and (b) is between 7 and 23% by weight based on glass fabric, and the total loading of component (c) is between 40 and 170% by weight based on glass fabric.
Claim 4
Dependent Claim
23 words
The composite of claim 1 wherein coating (b) is particulate polytetrafluoroethylene and coating (c) Is comprised of coatings (c)i and (c)ii in sequence.
Claim 5
Dependent Claim
43 words
Process for preparing a composite of claim 1 which comprises coating the fabric with the silicone oil and a dilute dispersion of the particulate in sequence, with drying between steps, followed by applying coating c(i) or (c)ii, or (c)i and (c)ii in sequence.
References Cited (Backward Citations)
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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) | 1990-02-23 | 1990-08-25 | 1991-02-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-02-23 | 1994-08-25 | 1995-02-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-02-23 | 1998-08-25 | 1999-02-24 | $7700.00 | Window Closed / Lapsed |