EP0028495A1
Expired / Lapsed
EP
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Composition and process for stabilizing soil
Assignee: Diamond Shamrock Corp
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Filing: 1980-10-28
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Granted: —
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Expires: 2000-10-28
Abstract
Abstract An easily-pumpable liquid alkali metal silicate composition, having controlled gelling characteristics and comprising water, an alkali metal silicate and glyoxal, also contains hydrogen peroxide in an amount of 0.02 to 0.7 mole per mole of glyoxal, i.e. an amount in the range from 0.025 to 0.18 mole of hydrogen peroxide per litre of composition. The composition also optionally contains a Group I-III metal salt, e.g., calcium chloride which considerably reduces the setting time of the composition (Fig. 1).
Inventors
- 👤 Fred L. Metz
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-04 23:42
CPC Classifications
C; C09; C09K; C09K17/00; C09K17/40; C09K17/42; C09K17/46; C04; C04B; C04B28/00; C04B28/24; C04B28/26; Y; Y10; Y10S; Y10S106/00; Y10S106/90
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
51 words
J. A liquid alkali metal silicate composition, which is curable to a solid upon standing and which comprises water, an alkali metal silicate and glyoxal, characterised in that the composition includes hydrogen peroxide in an amount in the range of 0.02 to 0.7 mole of hydrogen peroxide per mole of glyoxal.
Claim 2
Dependent Claim
56 words
A composition according to claim 1, which comprises 10% to 70% by volume of an aqueous alkali metal silicate having an alkali metal oxide:silicon dioxide ratio of 1.0:3.0-4.0, about 0.25 to 1.05 moles of glyoxal per litre of composition and about 0.025 to 0.18 mole of hydrogen peroxide per litre of composition, the balance being water.
Claim 3
Dependent Claim
20 words
A composition according to claim or 2, wherein the aqueous alkali metal silicate, containg 25% to 50% solids by weight.
Claim 4
Dependent Claim
30 words
A composition according to any preceding claim, which contains a Group I-III metal salt, which is reactive with the alkali metal silicate to impart water-insolubility to the resulting silicate gel.
Claim 5
Dependent Claim
24 words
A composition according to claim 4, wherein the Group I-III metal salt is sodium aluminate, aluminium chloride, copper sulphate, zinc chloride or calcium chloride.
Claim 6
Dependent Claim
20 words
A composition according to claim 5, which contains 0.009 to 0.06 mole of calcium chloride per litre of total composition.
Claim 7
Dependent Claim
15 words
A composition according to any preceding claim, wherein the alkali metal silicate is sodium silicate.
Claim 8
Dependent Claim
56 words
A composition according to claim 7, which comprises, by volume, 30% to 50% of aqueous sodium silicate having an Na 2 0:Si0 2 ratio of 1.0:3.2-3.3 and containing 257 to 50% solids by weight, 0.35 to 0.70 mole of glyoxal per litre of composition and 0.029 to 0.098 mole of hydrogen peroxide per litre of composition.
Claim 9
Dependent Claim
18 words
A composition according to claim 8, wherein the aqueous sodium silicate contains 35% to 45% solids by weight.
Claim 10
Dependent Claim
72 words
A process of stabilizing soil, which comprises contacting the soil with a sole liquid composition comprising 10% to 70% by volume of an aqueous alkali metal silicate having an alkali metal oxide:silicon dioxide ratio of 1.0:3.0-4.0 and about 0.25 to 1.05 moles of glyoxal per litre of composition the balance being water, characterised in that about 0.025 to 0.18 mole of hydrogen peroxide per litre of composition is included in the composition.
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