US4319926A
Expired / Lapsed
US
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Curable silicate compositions containing condensed phosphate hardeners and pH controlling bases
Assignee: PPG Industries Inc
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Filing: 1980-12-22
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Granted: 1982-03-16
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Expires: 2000-12-22
Abstract
Abstract Disclosed is a curable composition consisting essentially of (a) from about 10 to about 32 percent by weight of a water-soluble and/or water dispersible alkali metal silicate; and (b) from about 2 to about 10 percent by weight of a metal condensed phosphate hardener in the form of an aqueous dispersion containing a water-soluble base in an amount such that the pH of the aqueous dispersion of the hardener is greater than 9.5. Also disclosed is a method of preparing such a curable composition.
Inventors
- 👤 Peter M. Nowakowski
- 👤 William G. Boberski
- 👤 Jerome A. Seiner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 19:15
CPC Classifications
C; C04; C04B; C04B28/00; C04B28/24; C04B28/26; C04B2111/00; C04B2111/00474; C04B2111/00482
Claims Analysis
Total Claims: 30
Claim 1
Independent Claim
74 words
An aqueous curable composition consisting essentially of: (a) from about 10 to about 32 percent by weight of a water-soluble and/or water-dispersible alkali metal silicate; and (b) from about 2 to about 10 percent by weight of a metal condensed phosphate hardeneer in the form of an aqueous dispersion, said aqueous dispersion containing a water-soluble base in an amount such that the pH of said aqueous dispersion of said hardener is greater than 9.5.
Claim 2
Dependent Claim
74 words
An aqueous curable composition consisting essentially of: (a) from about 10 to about 32 percent by weight of a water-soluble and/or water-dispersible alkali metal silicate; and (b) from about 2 to about 10 percent by weight of a metal condensed phosphate hardeneer in the form of an aqueous dispersion, said aqueous dispersion containing a water-soluble base in an amount such that the pH of said aqueous dispersion of said hardener is greater than 9.5.
Claim 3
Dependent Claim
27 words
The composition of claim 1 wherein said base is in an amount such that the pH of said aqueous dispersion of said hardener is at least 10.
Claim 4
Dependent Claim
39 words
The composition of claim 1 wherein the amount of said silicate ranges from about 15 percent to about 25 percent by weight and the amount of said hardener ranges from about 8 percent to about 10 percent by weight.
Claim 5
Dependent Claim
27 words
The composition of claim 3 wherein said base is in an amount such that the pH of said aqueous dispersion of said hardener is at least 10.
Claim 6
Dependent Claim
19 words
The composition of claim 1 or 3 further comprising a pigment, a filler, an additive or a mixture thereof.
Claim 7
Dependent Claim
39 words
The composition of claim 1 or 3 wherein said base is selected from the group consisting of an alkali metal hydroxide, ammonia, an amine, a quaternary ammonium hydroxide, a quaternary phosphonium hydroxide, a tertiary sulfonium hydroxide and mixtures thereof.
Claim 8
Dependent Claim
18 words
The composition of claim 1 or 3 wherein said base is an organosilanolate or a mixture of organosilanolates.
Claim 9
Dependent Claim
14 words
The composition of claim 6 wherein said base is potassium hydroxide or sodium hydroxide.
Claim 10
Dependent Claim
39 words
The composition of claim 7 wherein said organosilanolate corresponds to the formula: R.sub.n Si(OM).sub.4-n wherein R is an organic radical, M is an alkali metal or a quaternary ammonium radical and n is an integer from 1 to 3.
Claim 11
Dependent Claim
18 words
The composition of claim 9 wherein said organosilanolate is dipotassium dimethylsilandiolate or an alkali metal salt of 3-aminopropylsilantriol.
Claim 12
Dependent Claim
14 words
The composition of claim 8 wherein said silicate is a water-soluble alkali metal silicate.
Claim 13
Dependent Claim
18 words
The composition of claim 1 or 3 wherein said metal condensed phosphate hardener comprises a condensed metal metaphosphate.
Claim 14
Dependent Claim
16 words
The composition of claim 12 wherein said condensed metal metaphosphate is a B-form condensed metal metaphosphate.
Claim 15
Dependent Claim
16 words
The composition of claim 13 wherein said B-form condensed metal metaphosphate is B-form condensed aluminum metaphosphate.
Claim 16
Dependent Claim
24 words
The composition of claim 12 wherein said metal condensed phosphate hardener comprises a mixture of B-form condensed metal metaphosphate and A-form condensed metal metaphosphate.
Claim 17
Dependent Claim
24 words
The composition of claim 15 wherein said metal condensed phosphate hardener comprises a mixture of B-form condensed aluminum metaphosphate and A-form condensed aluminum metaphosphate.
Claim 18
Dependent Claim
31 words
The composition of claim 16 wherein said B-form condensed aluminum metaphosphate and said A-form condensed aluminum metaphosphate are in a ratio by weight respectively ranging from about 3:5 to about 4.0:1.0.
Claim 19
Dependent Claim
26 words
The composition of claim 11 wherein said water-soluble alkali metal silicate has an SiO 2 :M 2 O mole ratio of about 2.0:1.0 to about 4.0:1.0.
Claim 20
Independent Claim
78 words
A method of producing an aqueous curable composition comprising: (a) mixing from about 10 percent to about 32 percent by weight of a water-soluble and/or water-dispersible alkali metal silicate; with (b) from about 2.0 to about 10 percent by weight of a metal condensed phosphate hardener in the form of an aqueous dispersion, said aqueous dispersion containing a water-soluble base in an amount such that the pH of said aqueous dispersion of said hardener is greater than 9.5.
Claim 21
Independent Claim
78 words
A method of producing an aqueous curable composition comprising: (a) mixing from about 10 percent to about 32 percent by weight of a water-soluble and/or water-dispersible alkali metal silicate; with (b) from about 2.0 to about 10 percent by weight of a metal condensed phosphate hardener in the form of an aqueous dispersion, said aqueous dispersion containing a water-soluble base in an amount such that the pH of said aqueous dispersion of said hardener is greater than 9.5.
Claim 22
Dependent Claim
19 words
The method of claim 19 wherein the pH of said aqueous dispersion of said hardener is at least 10.
Claim 23
Dependent Claim
39 words
The method of claim 19 or 20 wherein said base is selected from the group consisting of an alkali metal hydroxide, ammonia, an amine, a quaternary ammonium hydroxide, a quaternary phosphonium hydroxide, a tertiary sulfonium hydroxide and mixtures thereof.
Claim 24
Dependent Claim
17 words
The method of claim 19 or 20 wherein said base is organosilanolate or a mixture of organosilanolates.
Claim 25
Dependent Claim
70 words
The method of claim 21 wherein said silicate is a water-soluble alkali metal silicate having a SiO 2 :M 2 O mole ratio ranging from about 2.0:1.0 to about 4.0:1.0 and said metal condensed phosphate hardener comprises a mixture of B-form condensed aluminum metaphosphate and A-form condensed aluminum metaphosphate, the ratio by weight of B-form to A-form condensed aluminum metaphosphate in said mixture ranging from about 3:5 to about 4:1.
Claim 26
Independent Claim
98 words
A method of forming a substantially inorganic coating on a substrate comprising: (a) applying to said substrate an aqueous coating composition consisting essentially of (i) from about 10 percent to about 32 percent by weight of a water-soluble and/or water-dispersible alkali metal silicate, and (ii) from about 2.0 to about 10 percent by weight of a metal condensed phosphate hardener in the form of an aqueous dispersion, said aqueous dispersion containing a water-soluble base in an amount such that the pH of said aqueous dispersion of said hardener is greater than 9.5; and (b) curing said coating composition.
Claim 27
Independent Claim
98 words
A method of forming a substantially inorganic coating on a substrate comprising: (a) applying to said substrate an aqueous coating composition consisting essentially of (i) from about 10 percent to about 32 percent by weight of a water-soluble and/or water-dispersible alkali metal silicate, and (ii) from about 2.0 to about 10 percent by weight of a metal condensed phosphate hardener in the form of an aqueous dispersion, said aqueous dispersion containing a water-soluble base in an amount such that the pH of said aqueous dispersion of said hardener is greater than 9.5; and (b) curing said coating composition.
Claim 28
Dependent Claim
17 words
The method of claim 24 wherein said metal condensed phosphate hardener comprises a B-form condensed aluminum metaphosphate.
Claim 29
Dependent Claim
70 words
The method of claim 24 wherein said silicate is a water-soluble alkali metal silicate having a SiO 2 :M 2 O mole ratio ranging from about 2.0:1.0 to about 4.0:1.0 and said metal condensed phosphate hardener comprises a mixture of B-form condensed aluminum metaphosphate and A-form condensed aluminum metaphosphate, the ratio by weight of B-form to A-form condensed aluminum metaphosphate in said mixture ranging from about 3:5 to about 4:1.
Claim 30
Dependent Claim
19 words
The method of claim 26 wherein the pH of said aqueous dispersion of said hardener is at least 10.
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) | 1985-03-15 | 1985-09-14 | 1986-03-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-03-15 | 1989-09-14 | 1990-03-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-03-15 | 1993-09-14 | 1994-03-16 | $7700.00 | Window Closed / Lapsed |