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US4468429A
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Fiber reinforced inorganic hardened body and process for its production
Assignee: AGC Inc
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Filing: 1982-10-06
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Granted: 1984-08-28
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Expires: 2002-10-06
Abstract
Abstract A fiber reinforced inorganic hardened body comprises an inorganic hardened material and a fiber reinforcing material, wherein the fiber reinforcing material has a water permeability of from 5 to 27 l/min. and a volume reduction rate of at most 10%.
Inventors
- 👤 Ryuichiro Takeda
- 👤 Naoaki Fujita
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 21:18
CPC Classifications
E; E04; E04C; E04C5/00; E04C5/07; C; C04; C04B; C04B14/00; C04B14/38; C04B14/42; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24058; Y10T428/249921; Y10T428/249924; Y10T428/249932; Y10T428/25; Y10T428/259; Y10T428/27; Y10T428/29; Y10T428/2913; Y10T428/2933; Y10T428/2964; Y10T442/00; Y10T442/10; Y10T442/102; Y10T442/171; Y10T442/60; Y10T442/608; Y10T442/614; Y10T442/623
Claims Analysis
Total Claims: 26
Claim 1
Independent Claim
87 words
A glass fiber reinforced inorganic hardened body comprising an inorganic hardened material and a glass fiber reinforcing material, said fiber is prepared by: ( 1) coating it with a hardenable liquid resin having an alkaline elusion rate of at most 15%, (2) immersing it in an alkaline solution, and (3) heating it from 50 to 250 degrees C. for a period sufficient to provide a fiber reinforcing material having a water permeability of from 5 to 27 l/min. and a volume reduction rate of at most 10%.
Claim 2
Dependent Claim
87 words
A glass fiber reinforced inorganic hardened body comprising an inorganic hardened material and a glass fiber reinforcing material, said fiber is prepared by: ( 1) coating it with a hardenable liquid resin having an alkaline elusion rate of at most 15%, (2) immersing it in an alkaline solution, and (3) heating it from 50 to 250 degrees C. for a period sufficient to provide a fiber reinforcing material having a water permeability of from 5 to 27 l/min. and a volume reduction rate of at most 10%.
Claim 3
Dependent Claim
20 words
The fiber reinforced inorganic hardened body according to claim 1 wherein the fiber reinforcing material is alkaline resistant glass fibers.
Claim 4
Dependent Claim
36 words
The fiber reinforced inorganic hardened body according to claim 1 wherein the inorganic hardened material is selected from ordinary Portland cement, alumina cement, blast furnace cement, white Portland cement, rapid-hardening Portland cement, gypsum and calcium silicate.
Claim 5
Dependent Claim
30 words
The fiber reinforced inorganic hardened body according to claim 3 wherein the inorganic hardened material includes a filler selected from sand, fly ash, slag, pearlite, vermiculite, diatomaceous earth and silus.
Claim 6
Dependent Claim
29 words
The fiber reinforced inorganic hardened body according to claim 1, or 2 wherein the fiber reinforcing material is incorporated in an amount of from 1 to 10% by weight.
Claim 7
Dependent Claim
25 words
The fiber reinforced inorganic hardened body according to claim 1 wherein the water permeability of the fiber reinforcing material is from 16 to 25 l/min.
Claim 8
Dependent Claim
50 words
The fiber reinforced inorganic hardened body according to claim 1 wherein the fiber reinforcing material is a mat formed by curling long glass fiber bundles into piles each having a weight of from 20 to 500 g per 1,000 m and coating and binding the piled bundles with a binder.
Claim 9
Dependent Claim
40 words
The fiber reinforced inorganic hardened body according to claim 7 wherein the diameter of each glass fiber bundle and the number of glass fibers constituting each glass fiber bundle are from 10 to 30μ and from 30 to 7,000, respectively.
Claim 10
Dependent Claim
35 words
The fiber reinforced inorganic hardened body according to claim 7 wherein the binder is a hardenable liquid unsaturated polyester, epoxy, phenol or melamine resin having an alkaline elusion rate of at most 15% by weight.
Claim 11
Dependent Claim
33 words
The fiber reinforced inorganic hardened body according to claim 7 wherein the binder is a mixture of a liquid unsaturated polyester resin and styrene in a weight ratio of from 100:100 to 300:100.
Claim 12
Dependent Claim
34 words
The fiber reinforced inorganic hardened body according to claim 7, 9 or 10 wherein the binder is used in an amount of from 1.5 to 48% by weight based on the glass fiber bundles.
Claim 13
Dependent Claim
52 words
A process for producing a fiber reinforced inorganic hardened body which comprises introducing a non-hardened hardenable inorganic material into a mold containing a fiber reinforcing material having a water permeability of from 5 to 27 l/min. and a volume reduction rate of at most 10% and aging and hardening the inorganic material.
Claim 14
Dependent Claim
52 words
A process for producing a fiber reinforced inorganic hardened body which comprises introducing a non-hardened hardenable inorganic material into a mold containing a fiber reinforcing material having a water permeability of from 5 to 27 l/min. and a volume reduction rate of at most 10% and aging and hardening the inorganic material.
Claim 15
Dependent Claim
16 words
The process according to claim 12 wherein the fiber reinforcing material is alkaline resistant glass fibers.
Claim 16
Dependent Claim
33 words
The process according to claim 12 wherein the non-hardened hardenable inorganic material is selected from ordinary Portland cement, alumina cement, blast furnace cement, white Portland cement, rapid-hardening Portland cement, gypsum and calcium silicate.
Claim 17
Dependent Claim
33 words
The process according to claim 14 wherein the non-hardened hardenable inorganic material is used in combination with a filler or additive selected from sand, fly ash, slag, pearlite, vermiculite, diatomaceous earth and silus.
Claim 18
Dependent Claim
31 words
The process according to claim 14 or 15 wherein the solid components in the inorganic material and the filler or additive have an average particle size of from 10 to 500μ.
Claim 19
Dependent Claim
24 words
The process according to claim 12 wherein the non-hardened hardenable inorganic material contains water in an amount of from 15 to 50% by weight.
Claim 20
Dependent Claim
32 words
The process according to claim 12 wherein the fiber reinforcing material is used in an amount of from 1 to 10% by weight based on the total weight of the materials used.
Claim 21
Dependent Claim
21 words
The process according to claim 12 wherein the fiber reinforcing material has a water permeability of from 16 to 25 l/min.
Claim 22
Dependent Claim
44 words
The process according to claim 12 wherein the fiber reinforcing material is a mat formed by curling long glass fiber bundles into piles each having a weight of from 20 to 500 g per 1,000 m and coating and binding them with a binder.
Claim 23
Dependent Claim
36 words
The process according to claim 20 wherein the diameter of each glass fiber bundle and the number of glass fibers constituting each glass fiber bundle are from 10 to 30μ and from 30 to 7,000, respectively.
Claim 24
Dependent Claim
33 words
The process according to claim 20 wherein the binder is a hardenable liquid unsaturated polyester, epoxy, phenol, melamine, SBR or acryl resin having an alkaline elusion rate of at most 15% by weight.
Claim 25
Dependent Claim
29 words
The process according to claim 20 wherein the binder is a mixture of a liquid unsaturated polyester resin and styrene in a weight ratio of from 100:100 to 300:100.
Claim 26
Dependent Claim
27 words
The process according to claim 20 wherein the binder is used in an amount of from 1.5 to 48% by weight based on the glass fiber bundles.
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) | 1987-08-28 | 1988-02-27 | 1988-08-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-08-28 | 1992-02-27 | 1992-08-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-08-28 | 1996-02-27 | 1996-08-28 | $7700.00 | Window Closed / Lapsed |