US4101334A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coated glass fibers
Assignee: Owens Corning
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Filing: 1976-12-23
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Granted: 1978-07-18
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Expires: 1996-12-23
Abstract
Abstract A glass fiber reinforced cementitious product and treated glass fibers for use in the reinforcement of cementitious materials wherein the reinforcement is in the form of bundles of glass fibers, the bundles including an alkali impervious impregnant therein to protect the glass fibers from alkaline materials liberated during age hardening of cementitious products. The use of impregnated bundles of glass fibers prevents or substantially minimizes loss in strength with aging of glass fiber-reinforced cementitious products as is characteristic of prior art products.
Inventors
- 👤 Homer G. Hill
- 👤 William G. Pansius
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 13:47
CPC Classifications
C; C03; C03C; C03C25/00; C03C25/10; C03C25/1025; C03C25/103; C03C13/00; C03C13/001; C03C13/002
Claims Analysis
Total Claims: 25
Claim 1
Independent Claim
59 words
A cementitious product comprising a composite of reinforcing materials and a cementitious matrix wherein one of the reinforcing materials comprising bundles formed of a plurality of alkali resistant glass fibers, said bundles including an alkali impervious impregnant which coats the glass fibers and penetrates the bundles to fill the interstices between the glass fibers separating each from the other.
Claim 2
Dependent Claim
59 words
A cementitious product comprising a composite of reinforcing materials and a cementitious matrix wherein one of the reinforcing materials comprising bundles formed of a plurality of alkali resistant glass fibers, said bundles including an alkali impervious impregnant which coats the glass fibers and penetrates the bundles to fill the interstices between the glass fibers separating each from the other.
Claim 3
Dependent Claim
17 words
A cementitious product as defined in claim 1 wherein the alkali impervious impregnant is an organic resin.
Claim 4
Dependent Claim
24 words
A cementitious product as defined in claim 1 wherein the impregnant is a wax containing functional groups capable of reaction with free hydroxyl groups.
Claim 5
Dependent Claim
15 words
A cementitious product as defined in claim 1 wherein the impregnant includes a microcrystalline wax.
Claim 6
Dependent Claim
21 words
A cementitious product as defined in claim 1 wherein the impregnant includes a copolymerization product of an olefin with vinyl esters.
Claim 7
Dependent Claim
17 words
A cementitious product as defined in claim 5 wherein the copolymerization product is an ethylene-vinyl acetate copolymer.
Claim 8
Dependent Claim
18 words
A cementitious product as defined in claim 1 wherein the alkali resistant glass is a high zirconia glass.
Claim 9
Dependent Claim
25 words
A cementitious product as defined in claim 1 wherein the individual glass fibers forming the bundle have a thin size coating on the surfaces thereof.
Claim 10
Dependent Claim
27 words
A cementitious product as defined in claim 1 wherein the impregnant constitutes 10-60% by weight of the impregnated glass fiber bundle, as determined by loss on ignition.
Claim 11
Dependent Claim
15 words
A cementitious product as defined in claim 1 wherein the cementitious matrix is Portland cement.
Claim 12
Dependent Claim
16 words
A cementitious product as defined in claim 1 wherein the cementitious matrix is hydrous calcium silicate.
Claim 13
Dependent Claim
14 words
A cementitious product as defined in claim 1 wherein the cementitious matrix is cement.
Claim 14
Dependent Claim
14 words
A cementitious product as defined in claim 1 wherein the cementitious matrix is concrete.
Claim 15
Dependent Claim
14 words
A cementitious product as defined in claim 1 wherein the cementitious matrix is mortar.
Claim 16
Dependent Claim
29 words
A cementitious product as defined in claim 1 wherein at least 80% of the interstices between the glass fibers of the bundle are filled with the alkali impervious impregnant.
Claim 17
Dependent Claim
26 words
A cementitious product as defined in claim 1 wherein the alkali impervious impregnant penetrates the bundle to substantially completely fill the interstices between the glass fibers.
Claim 18
Dependent Claim
61 words
A cementitious product comprising a composite of reinforcing materials and a cementitious matrix wherein one of the reinforcing materials comprising bundles formed of a plurality of glass fibers, said bundles including an impregnant of a wax impervious to alkali which coats the glass fibers and penetrates the bundles to fill the interstices between the glass fibers separating each from the other.
Claim 19
Dependent Claim
61 words
A cementitious product comprising a composite of reinforcing materials and a cementitious matrix wherein one of the reinforcing materials comprising bundles formed of a plurality of glass fibers, said bundles including an impregnant of a wax impervious to alkali which coats the glass fibers and penetrates the bundles to fill the interstices between the glass fibers separating each from the other.
Claim 20
Dependent Claim
17 words
A cementitious product as defined in claim 17 wherein the glass fibers are made of "E" glass.
Claim 21
Dependent Claim
15 words
A cementitious product as defined in claim 17 wherein the wax is a microcrystalline wax.
Claim 22
Dependent Claim
21 words
A cementitious product as defined in claim 17 wherein the impregnant includes a polymerization product of an olefin with vinyl esters.
Claim 23
Dependent Claim
25 words
A cementitious product as defined in claim 17 wherein the individual glass fibers forming the bundle have a thin size coating on the surfaces thereof.
Claim 24
Dependent Claim
27 words
A cementitious product as defined in claim 17 wherein the impregnant constitutes 10-60% by weight of the impregnated glass fiber bundle, as determined by loss on ignition.
Claim 25
Dependent Claim
17 words
A cementitious product as defined in claim 20 wherein the polymerization product is an ethylene-vinyl acetate copolymer.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-07-17 | 1982-01-16 | 1982-07-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-07-17 | 1986-01-16 | 1986-07-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-07-17 | 1990-01-16 | 1990-07-18 | $7700.00 | Window Closed / Lapsed |