Patent JPS6413264A successfully refreshed from Google Patents.
US4455400A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Migratin-free size for glass fibers
Assignee: Owens Corning Fiberglas Technology Inc
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Filing: 1980-06-25
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Granted: 1984-06-19
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Expires: 2000-06-25
Abstract
Abstract A migration-free size for glass fibers which includes a silane coupler, lubricant and film former and is characterized by the absence of a carrier, either aqueous or organic. To provide required shelf-life, a volatile agent such as acetone is added in limited amount to block coupler-film former reaction pending use of the size.
Inventors
- 👤 Carl A. Johnson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 20:21
CPC Classifications
C; C08; C08K; C08K9/00; C08K9/04; C08K9/06; C08K7/00; C08K7/02; C08K7/04; C08K7/14
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
89 words
A size for treating glass fibers comprising: from about 5 to about 30 percent by weight of a silane coupler; from about 10 to about 65 percent by weight of a lubricant; from about 10 to about 70 percent by weight of an epoxy film former; and an amount, up to about 8 percent by weight, of a volatile blocking agent sufficient for blocking the reaction of said coupler and said film former; said size having a viscosity not greater than 2000 cps and carrier being substantially absent therefrom.
Claim 2
Dependent Claim
89 words
A size for treating glass fibers comprising: from about 5 to about 30 percent by weight of a silane coupler; from about 10 to about 65 percent by weight of a lubricant; from about 10 to about 70 percent by weight of an epoxy film former; and an amount, up to about 8 percent by weight, of a volatile blocking agent sufficient for blocking the reaction of said coupler and said film former; said size having a viscosity not greater than 2000 cps and carrier being substantially absent therefrom.
Claim 3
Dependent Claim
12 words
The size of claim 1 in which said blocking agent is acetone.
Claim 4
Dependent Claim
23 words
The size of claim 1 wherein said size exhibits a viscosity within the range of about 100 to 200 cps at 75° F.
Claim 5
Dependent Claim
12 words
The size of claim 1 wherein said coupler is an amino silane.
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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) | 1987-06-19 | 1987-12-19 | 1988-06-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-06-19 | 1991-12-19 | 1992-06-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-06-19 | 1995-12-19 | 1996-06-19 | $7700.00 | Window Closed / Lapsed |