US4209339A
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Cement compositions
Assignee: Norsk Proco AS
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Filing: 1978-06-05
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Granted: 1980-06-24
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Expires: 1998-06-05
Abstract
Abstract Water resistant magnesium oxychloride hydrate (Sorel cement) compositions and processes for producing the same. The processes comprise the addition of an ethyl silicate and/or a premix of magnesium chloride and magnesium oxide to the magnesium oxychloride hydrate reaction mixture (MgCl 2 +MgO) followed by the subsequent reaction and curing thereof.
Inventors
- 👤 Robert Smith-Johannsen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 11:00
CPC Classifications
C; C04; C04B; C04B28/00; C04B28/30; C04B28/32; C04B2111/00; C04B2111/20; C04B2111/27
Claims Analysis
Total Claims: 26
Claim 1
Independent Claim
25 words
A Sorel cement formula composition comprising magnesium chloride, magnesium oxide, water and ethyl silicate, said ethyl silicate being present in a water stabilizing effective amount.
Claim 2
Dependent Claim
25 words
A Sorel cement formula composition comprising magnesium chloride, magnesium oxide, water and ethyl silicate, said ethyl silicate being present in a water stabilizing effective amount.
Claim 3
Dependent Claim
32 words
A Sorel cement formula composition according to claim 1 wherein the ethyl silicate is present in an amount of from about 0.5-2% by weight based on the total weight of the formula.
Claim 4
Dependent Claim
15 words
A Sorel cement formula composition according the claim 1 which has added thereto glass fibers.
Claim 5
Dependent Claim
32 words
A Sorel cement formula composition according to claim 3 wherein the glass fibers are added in an amount of from about 1-10% by weight based on the total weight of the formula.
Claim 6
Dependent Claim
19 words
A Sorel cement formula composition according to claim 1 wherein said formula is cured under relatively saturated atmospheric conditions.
Claim 7
Dependent Claim
34 words
A Sorel cement formula composition comprising magnesium chloride, magnesium oxide, water and nucleating amount of a premix formula comprising the reaction product of water, magnesium chloride and a relatively small amount of magnesium oxide.
Claim 8
Dependent Claim
34 words
A Sorel cement formula composition comprising magnesium chloride, magnesium oxide, water and nucleating amount of a premix formula comprising the reaction product of water, magnesium chloride and a relatively small amount of magnesium oxide.
Claim 9
Dependent Claim
24 words
A Sorel cement formula composition according to claim 6 containing also ethyl silicate, said ethyl silicate being present in a water stabilizing effective amount.
Claim 10
Dependent Claim
32 words
A Sorel cement formula composition according to claim 6 wherein the premix formula is present in an amount of from about 1-5% by weight based on the total weight of the formula.
Claim 11
Dependent Claim
40 words
A Sorel cement formula composition according to claim 6 wherein the magnesium oxide of the premix formula is present therein in an amount such that substantially all of the magnesium oxide reacts with the magnesium chloride of the Premix formula.
Claim 12
Dependent Claim
15 words
A Sorel cement formula composition according to claim 6 which has added thereto glass fibers.
Claim 13
Dependent Claim
32 words
A Sorel cement formula composition according to claim 10 wherein the glass fibers are added in an amount of from about 1-10% by weight based on the total weight of the formula.
Claim 14
Dependent Claim
19 words
A Sorel cement formula composition according to claim 6 wherein said formula is cured under relatively saturated atmospheric conditions.
Claim 15
Dependent Claim
35 words
A process of manufacture of Sorel cement products which comprises admixing magnesium chloride, magnesium oxide, water and a water stabilizing amount of ethyl silicate to yield a Sorel cement formula and thereafter curing said formula.
Claim 16
Dependent Claim
35 words
A process of manufacture of Sorel cement products which comprises admixing magnesium chloride, magnesium oxide, water and a water stabilizing amount of ethyl silicate to yield a Sorel cement formula and thereafter curing said formula.
Claim 17
Dependent Claim
16 words
A process according to claim 13 wherein the Sorel cement formula has added thereto glass fibers.
Claim 18
Dependent Claim
18 words
A process according to claim 13 wherein the Sorel cement formula is cured under relatively saturated atmospheric conditions.
Claim 19
Dependent Claim
12 words
A Sorel cement product obtained according to the process of claim 13.
Claim 20
Dependent Claim
51 words
A process of manufacture of Sorel cement products which comprises admixing magnesium chloride, magnesium oxide, water and a nucleating amount of a premix formula comprising the reaction product of water, magnesium chloride and a relatively small amount of magnesium oxide to yield a Sorel cement formula and thereafter curing said formula.
Claim 21
Dependent Claim
51 words
A process of manufacture of Sorel cement products which comprises admixing magnesium chloride, magnesium oxide, water and a nucleating amount of a premix formula comprising the reaction product of water, magnesium chloride and a relatively small amount of magnesium oxide to yield a Sorel cement formula and thereafter curing said formula.
Claim 22
Dependent Claim
22 words
A process according to claim 17 wherein the Sorel cement formula has added thereto ethyl silicate in a water stabilizing effective amount.
Claim 23
Dependent Claim
16 words
A process according to claim 17 wherein the Sorel cement formula has added thereto glass fibers.
Claim 24
Dependent Claim
17 words
A process according to claim 17 wherein the Sorel cement formula is cured under relatively saturated conditions.
Claim 25
Dependent Claim
12 words
A Sorel cement product obtained according to the process of claim 17.
Claim 26
Dependent Claim
12 words
A Sorel cement product obtained according to the process of claim 18.
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) | 1983-06-24 | 1983-12-24 | 1984-06-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-06-24 | 1987-12-24 | 1988-06-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-06-24 | 1991-12-24 | 1992-06-24 | $7700.00 | Window Closed / Lapsed |