US3895956A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Water permeability reducing inorganic coating slurry composition
Assignee: Nissan Chemical Corp
•
Filing: 1973-08-21
•
Granted: 1975-07-22
•
Expires: 1993-08-21
Abstract
Abstract An inorganic coating slurry composition with reduced water permeability is formed with 5 - 700 parts by weight of an inorganic filler, 0.1 - 30 parts by weight of a water swellable magnesium silicate or bentonite, 0.1 - 50 parts by weight of a water soluble water repellent, 0.01 - 10 parts by weight of an organic viscosity improver and 100 parts by weight of a silica sol containing a silica content of from 3 - 50 wt percent and at least one alkali component wherein the mole ratio of SiO2 to M2O is greater than 4 and wherein M2O represents an alkali metal oxide, ammonium hemihydrate, an amine hemihydrate, a quaternary amine hemihydrate, guanidine hemihydrate or hadrazine hemihydrate.
Inventors
- 👤 Akitoshi Yoshida
- 👤 Koichi Asahara
- 👤 Koichiro Yanagida
- 👤 Tadanobu Maruyama
- 👤 Ikue Takatsu
- 👤 Yoshiko Kumagai
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 09:55
CPC Classifications
C; C04; C04B; C04B41/00; C04B41/009; C04B28/00; C04B28/24; C04B41/45; C04B41/50; C04B41/5025; C04B41/5037; C09; C09D; C09D1/00; C09D1/02; C09D1/04; C04B2111/00; C04B2111/00474; C04B2111/00482
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
178 words
A COATING SLURRY COMPOSITION WITH REDUCED WATER PERMEABILITY WHICH COMPRISES 5-700 PARTS BY WEIGHT OF AN INORGANIC FILLER OTHER THAN A WATER SWELLABLE MAGNESIUM SILICATE OR BENTONITE, 0.1 -30 PARTS BY WEIGHT OF A WATER SWELLABLE MAGNESIUM SILICATE, BENTONITE, OR MIXTURES THEREOF, 0.1-50 PARTS BY WEIGHT OF A WATER REPELLENT, SELECTED FROM THE GROUP CONSISTING OF AN ALKALI ALKYL SILICONATE AND INORGANIC POWDERS COATED WITH AN ALKALI ALKYL SILICONATE OR A FATTY ACID OR SALTS THEREOF, 0.0 1 -10 PARTS BY WEIGHT OF AN ORGANIC VISCOSITY IMPROVER SELECTED FROM THE GROUP CONSISTING OF A MONOVALENT ALKALI METAL, AMMOMIUM OR AMINE SALT OF A POLYACRYLIC HAVING A DEGREE OF POLYMERIZATION OF AT LEAST 2000, POLYTHYLENEOXIDE OF 500,000 MOLECULAR WEIGHT AND A WATER SOLUBLE CELLULOSE DERIVATIVE AND 100 PARTS BY WEIGHT OF A SILICA SOL CONTAINING A SILICA COMPONENT RANGING FROM 3-50 WEIGHT PERCENT AND AT LEAST ONE ALKALI COMPONENT WHEREIN THE MOLE RATIO OF SIO2 TO M2O IS GREATER THAN 4 AND WHEREIN M2O REPRESENTS AN ALKALI METAL OXIDE, AMMONIUM HEMIHYDRATE, AN AMINE HEMIHYDRATE, GUANIDINE HEMIHYDRATE OR HYDRAZINE HEMIHYDRATE.
Claim 2
Dependent Claim
178 words
A COATING SLURRY COMPOSITION WITH REDUCED WATER PERMEABILITY WHICH COMPRISES 5-700 PARTS BY WEIGHT OF AN INORGANIC FILLER OTHER THAN A WATER SWELLABLE MAGNESIUM SILICATE OR BENTONITE, 0.1 -30 PARTS BY WEIGHT OF A WATER SWELLABLE MAGNESIUM SILICATE, BENTONITE, OR MIXTURES THEREOF, 0.1-50 PARTS BY WEIGHT OF A WATER REPELLENT, SELECTED FROM THE GROUP CONSISTING OF AN ALKALI ALKYL SILICONATE AND INORGANIC POWDERS COATED WITH AN ALKALI ALKYL SILICONATE OR A FATTY ACID OR SALTS THEREOF, 0.0 1 -10 PARTS BY WEIGHT OF AN ORGANIC VISCOSITY IMPROVER SELECTED FROM THE GROUP CONSISTING OF A MONOVALENT ALKALI METAL, AMMOMIUM OR AMINE SALT OF A POLYACRYLIC HAVING A DEGREE OF POLYMERIZATION OF AT LEAST 2000, POLYTHYLENEOXIDE OF 500,000 MOLECULAR WEIGHT AND A WATER SOLUBLE CELLULOSE DERIVATIVE AND 100 PARTS BY WEIGHT OF A SILICA SOL CONTAINING A SILICA COMPONENT RANGING FROM 3-50 WEIGHT PERCENT AND AT LEAST ONE ALKALI COMPONENT WHEREIN THE MOLE RATIO OF SIO2 TO M2O IS GREATER THAN 4 AND WHEREIN M2O REPRESENTS AN ALKALI METAL OXIDE, AMMONIUM HEMIHYDRATE, AN AMINE HEMIHYDRATE, GUANIDINE HEMIHYDRATE OR HYDRAZINE HEMIHYDRATE.
Claim 3
Dependent Claim
21 words
The slurry composition of claim 1, wherein said silica sol has a SiO2 to M2O mole ratio of 25 to 20,000.
Claim 4
Dependent Claim
27 words
The slurry composition of claim 1, wherein said silica sol is prepared by adding an alkaline material to a silica sol having a low alkaline material content.
Claim 5
Dependent Claim
27 words
The slurry composition of claim 3 wherein said alkaline material is an alkali metal hydroxide or carbonate or ammonia, an amine, a quaternary amine, quanidine or hydrazine.
Claim 6
Dependent Claim
23 words
The slurry composition of claim 1, wherein the molar ratio of SiO2 to M2O is in the range of from 25 to 20,000.
Claim 7
Dependent Claim
25 words
The slurry composition of claim 1, wherein the inorganic filler is selected from the group consisting of refractory materials, sand, glass pigments and clay minerals.
Claim 8
Dependent Claim
21 words
The slurry composition of claim 1, wherein the amount of inorganic filler present is from 10 to 500 parts by weight.
Claim 9
Dependent Claim
23 words
The slurry composition of claim 1, wherein the alkali alkyl siliconate is present in an amount therefrom 0.5 to 20 parts by weight.
Claim 10
Dependent Claim
25 words
The slurry composition of claim 1, which also contains a curing accelerator, thermal decomposition foaming agent, a surfactant, a metal powder and an alkali hydroxide.
Claim 11
Dependent Claim
24 words
The slurry composition of claim 9, wherein the curing accelerator is selected from the group consisting of dicalcium silicate, fluorosilicates, carbonates, ferrosilicon and phosphates.
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) | 1978-07-21 | 1979-01-20 | 1979-07-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-07-21 | 1983-01-20 | 1983-07-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-07-21 | 1987-01-20 | 1987-07-22 | $7700.00 | Window Closed / Lapsed |