US4448910A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Aqueous compositions for sizing glass fibers containing emulsified epoxy resin and chloropropylsilane
Assignee: Owens Corning Fiberglas Technology Inc
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Filing: 1983-04-25
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Granted: 1984-05-15
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Expires: 2003-04-25
Abstract
Abstract Dilute aqueous sizing compositions for glass fibers containing emulsified epoxy resin, lubricant and, as the sole organosilane coupling agent, 3-chloropropyltrimethoxy silane give superior properties to glass fibers having as a size coating the in situ dried residue thereof for use as reinforcing elements in polymeric or resinous articles.
Inventors
- 👤 Richard M. Haines
- 👤 Robert Wong
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 23:45
CPC Classifications
C; C03; C03C; C03C25/00; C03C25/10; C03C25/24; C03C25/26; C08; C08J; C08J5/00; C08J5/04; C08J5/06; C08J5/08; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2913; Y10T428/2933; Y10T428/2938
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
123 words
An aqueous composition comprising: (a) an emulsified liquid epoxy resin or emulsified liquid solution of an epoxy resin, said epoxy resin being a diepoxide reaction product of a bisphenol and an epihalohydrin, said epoxy resin having an epoxy equivalent weight greater than about 250, said epoxy resin comprising from about 1 to about 10 percent of the total weight of said composition; (b) a lubricant comprising a mineral oil in an amount of about 2 to about 15 percent of the weight of said epoxy resin; and, (c) as the sole organosilane coupling agent, 3-chloropropyltrimethoxy silane or hydrosate thereof, said silane or hydrosate thereof being present in an amount from about 2 to about 15 percent of the weight of the epoxy resin.
Claim 2
Dependent Claim
123 words
An aqueous composition comprising: (a) an emulsified liquid epoxy resin or emulsified liquid solution of an epoxy resin, said epoxy resin being a diepoxide reaction product of a bisphenol and an epihalohydrin, said epoxy resin having an epoxy equivalent weight greater than about 250, said epoxy resin comprising from about 1 to about 10 percent of the total weight of said composition; (b) a lubricant comprising a mineral oil in an amount of about 2 to about 15 percent of the weight of said epoxy resin; and, (c) as the sole organosilane coupling agent, 3-chloropropyltrimethoxy silane or hydrosate thereof, said silane or hydrosate thereof being present in an amount from about 2 to about 15 percent of the weight of the epoxy resin.
Claim 3
Dependent Claim
37 words
The composition of claim 1 further comprising about 15 to about 25 percent of the weight of the epoxy resin of a predominantly non-ionic surfactant for emulsifying the epoxy resin or solution thereof and the mineral oil.
Claim 4
Dependent Claim
20 words
A glass fiber having on its surface the residue formed by removing water from the aqueous composition of claim 2.
Claim 5
Dependent Claim
24 words
A glass fiber according to claim 3 wherein the residue comprises from about 0.5 to about 2.5 percent of the weight of the fiber.
References Cited (Backward Citations)
US3772870A
Cited
US3837898A
Cited
US3850869A
Cited
US4140833A
Cited
US4330444A
Cited
US4361465A
Cited
US4369264A
Cited
US4394475A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-05-15 | 1987-11-14 | 1988-05-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-05-15 | 1991-11-14 | 1992-05-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-05-15 | 1995-11-14 | 1996-05-15 | $7700.00 | Window Closed / Lapsed |