GB948137A - Preparation of condensed isopropyl silicate materials - Google Patents

Preparation of condensed isopropyl silicate materials

Info

Publication number
GB948137A
GB948137A GB41209/62A GB4120962A GB948137A GB 948137 A GB948137 A GB 948137A GB 41209/62 A GB41209/62 A GB 41209/62A GB 4120962 A GB4120962 A GB 4120962A GB 948137 A GB948137 A GB 948137A
Authority
GB
United Kingdom
Prior art keywords
mixture
sicl4
alcohol
water
isopropyl
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB41209/62A
Inventor
Harold Garton Emblem
Earl Whiteway Fothergill
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Unilever PLC
Original Assignee
Unilever PLC
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Unilever PLC filed Critical Unilever PLC
Publication of GB948137A publication Critical patent/GB948137A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07F—ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM
    • C07F7/00—Compounds containing elements of Groups 4 or 14 of the Periodic System
    • C07F7/02—Silicon compounds
    • C07F7/04—Esters of silicic acids
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22C—FOUNDRY MOULDING
    • B22C1/00—Compositions of refractory mould or core materials; Grain structures thereof; Chemical or physical features in the formation or manufacture of moulds
    • B22C1/16—Compositions of refractory mould or core materials; Grain structures thereof; Chemical or physical features in the formation or manufacture of moulds characterised by the use of binding agents; Mixtures of binding agents
    • B22C1/20—Compositions of refractory mould or core materials; Grain structures thereof; Chemical or physical features in the formation or manufacture of moulds characterised by the use of binding agents; Mixtures of binding agents of organic agents
    • B22C1/205—Compositions of refractory mould or core materials; Grain structures thereof; Chemical or physical features in the formation or manufacture of moulds characterised by the use of binding agents; Mixtures of binding agents of organic agents of organic silicon or metal compounds, other organometallic compounds
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B33/00—Clay-wares
    • C04B33/02—Preparing or treating the raw materials individually or as batches
    • C04B33/13—Compounding ingredients
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B33/00—Clay-wares
    • C04B33/02—Preparing or treating the raw materials individually or as batches
    • C04B33/13—Compounding ingredients
    • C04B33/1315—Non-ceramic binders
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G77/00—Macromolecular compounds obtained by reactions forming a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon in the main chain of the macromolecule
    • C08G77/02—Polysilicates

Abstract

A condensed isopropyl silicate is made by adding gradually to SiCl4 a mixture of water and isopropyl alcohol, the amount of water added being from 0.75 to 1 mol per mol of SiCl4 and the amount of alcohol added being in excess of that stoichiometrically required to replace those chlorine atoms of the SiCl4 with which the water is insufficient to react, refluxing the mixture and removing excess alcohol by distillation. In examples (1) a mixture of anhydrous isopropyl alcohol and water was gradually added to SiCl4 and the resulting mixture was refluxed for 1 hour and left overnight, unreacted alcohol was then removed by distillation up to 100 DEG C., leaving a crude product having a SiO2 content of 38.05%; further distillation up to 200 DEG C. removed the orthosilicate content, leaving a mixture of isopropyl polysilicates having a SiO2 content of 38.5%; (2) the process was similar to (1) except that the reflux time was increased to 4 hours, resulting in products having SiO2 contents of 39.5% and 40.7% respectively. Uses: for binding refractory powders in the preparation of moulds for the casting of metals, as described in Specification 948,132.
GB41209/62A 1959-03-18 1959-03-18 Preparation of condensed isopropyl silicate materials Expired GB948137A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB9375/59A GB948132A (en) 1959-03-18 1959-03-18 Improvements relating to processes for binding particulate solid materials

Publications (1)

Publication Number Publication Date
GB948137A true GB948137A (en) 1964-01-29

Family

ID=9870760

Family Applications (3)

Application Number Title Priority Date Filing Date
GB9375/59A Expired GB948132A (en) 1959-03-18 1959-03-18 Improvements relating to processes for binding particulate solid materials
GB41209/62A Expired GB948137A (en) 1959-03-18 1959-03-18 Preparation of condensed isopropyl silicate materials
GB41208/62A Expired GB948136A (en) 1959-03-18 1959-03-18 Preparation of condensed isopropyl silicate materials

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GB9375/59A Expired GB948132A (en) 1959-03-18 1959-03-18 Improvements relating to processes for binding particulate solid materials

Family Applications After (1)

Application Number Title Priority Date Filing Date
GB41208/62A Expired GB948136A (en) 1959-03-18 1959-03-18 Preparation of condensed isopropyl silicate materials

Country Status (4)

Country Link
BE (1) BE588775A (en)
CH (1) CH415969A (en)
DE (1) DE1209252B (en)
GB (3) GB948132A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4810441A (en) * 1985-04-02 1989-03-07 Clinotherm Limited Process for the preparation of a ceramic fiber
US4897232A (en) * 1986-11-28 1990-01-30 Clinotherm Limited Preparation of fibres from a liquid precursor

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1300289B (en) * 1962-06-30 1969-07-31 Ruhrchemie Ag Process for the production of solid polysilicic acid esters
DE2809871A1 (en) * 1978-03-08 1979-09-13 Dynamit Nobel Ag PROCESS FOR THE PREPARATION OF PARTIAL HYDROLYZATES FROM TETRA- (2-ALCOXY ETHYL) - SILICATES
DE2964003D1 (en) * 1978-03-23 1982-12-16 Zirconal Processes Ltd Improvements in the manufacture of alkylsilicates and their conversion to alkylpolysilicates

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB290717A (en) * 1927-02-16 1928-05-16 King George Improvements in materials for use in the art of painting or varnishing
CH275202A (en) * 1943-07-26 1951-05-15 Union Chimique Belge Sa Process for making molds and cores for casting metals.

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4810441A (en) * 1985-04-02 1989-03-07 Clinotherm Limited Process for the preparation of a ceramic fiber
US4897232A (en) * 1986-11-28 1990-01-30 Clinotherm Limited Preparation of fibres from a liquid precursor

Also Published As

Publication number Publication date
CH415969A (en) 1966-06-30
GB948132A (en) 1964-01-29
GB948136A (en) 1964-01-29
DE1209252B (en) 1966-01-20
BE588775A (en) 1960-09-19

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