GB960240A - New silicon compounds - Google Patents

New silicon compounds

Info

Publication number
GB960240A
GB960240A GB42558/61A GB4255861A GB960240A GB 960240 A GB960240 A GB 960240A GB 42558/61 A GB42558/61 A GB 42558/61A GB 4255861 A GB4255861 A GB 4255861A GB 960240 A GB960240 A GB 960240A
Authority
GB
United Kingdom
Prior art keywords
weight
preparation
examples
specified
oc3h6
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
GB42558/61A
Inventor
Arthur Ibbotson
David Brereton Morgan
Kenneth Stephenson
Edward Jervis Vickers
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.)
Imperial Chemical Industries Ltd
Original Assignee
Imperial Chemical Industries Ltd
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 Imperial Chemical Industries Ltd filed Critical Imperial Chemical Industries Ltd
Priority to GB42558/61A priority Critical patent/GB960240A/en
Publication of GB960240A publication Critical patent/GB960240A/en
Expired legal-status Critical Current

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07FACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM
    • C07F7/00Compounds containing elements of Groups 4 or 14 of the Periodic Table
    • C07F7/02Silicon compounds
    • C07F7/08Compounds having one or more C—Si linkages
    • C07F7/18Compounds having one or more C—Si linkages as well as one or more C—O—Si linkages
    • C07F7/1804Compounds having Si-O-C linkages
    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07FACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM
    • C07F7/00Compounds containing elements of Groups 4 or 14 of the Periodic Table
    • C07F7/02Silicon compounds
    • C07F7/04Esters of silicic acids

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Polyurethanes Or Polyureas (AREA)

Abstract

The invention comprises alkoxy silanes of the general formula: Ry Si[(OCnH2n)a (OCmH2m)bX]4-y wherein R is a hydrocarbon radical optionally substituted with chlorine, X is a monovalent radical derived from a compound XH in which H is a hydrogen atom reactive with a cyclic oxide, y is 0, 1 or 2; n is 2, 3 or 4, m is 3 or 4, a is 0 or an integer and b is greater than 4, which are used in the preparation of polyurethane foams. The silanes may be prepared by reacting silica tetrachloride or an appropriate chloro-silane with (a) monohydric alcohols of general formula H(OCnH2n)a (OCmH2m)bX wherei X, a, b, n and m have the values above, in presence of pyridine and acid binding agent, (b) the sodium salt of the above monohydric alcohols, or (c) by ester interchange, e.g. between tetraethoxy silane and a monohydric alcohol as defined above. Specified starting materials are CH3SiCl3, (CH3)2SiCl2; CH3Si(OC2H5)3, (CH3)2Si(OC2H5)2, C6H5SiCl3 and C6H5C2 H4Si(OC2H5)3. R may be straight or branched chain alkyl, cycloalkyl, aryl or aralkyl, substituted or unsubstituted, the same or different and among those specified are methyl, iso-butyl, cyclohexyl, benzyl and tolyl. The compounds XH used to obtain radical X include monohydric aliphatic, cycloaliphatic and arylaliphatic alcohols, phenols, secondary amines, carboxylic acids or mono N-substituted carboxylic amides. Many are specified and include isooctanol, cresols, N:N dialkylethanolamines, N alkyl acetamides, butyric acid and lauric acid. When a above is an integer the copolymers may be random or block copolymers, the oxyalkylene residue of molecular weight of 250 to 3,000 containing at least 50% of oxyalkylene units containing at least 3 carbon atoms per unit. Polyurethane foams are prepared by reacting organic polyisocyanates and hydroxyl group containing polymers having at least two hydroxyl groups per molecule in the presence of water preferably 1% to 10% by weight of the hydroxylic polymer and/or a low boiling liquid, said process being carried out in presence of an alkoxyl silane as define above. Hydroxyl group containing polymers specified are polyesters and polyesteramides having molecular weights of 200 to 5,000 and polyethers having molecular weights of 200 to 8,000 containing at least two isocyanate reactive groups. Many examples are given along with their methods of preparation. Low boiling point liquids used in amounts of 1% to 100% by weight based on the hydroxylic polymer are inert towards isocyanates and have boiling points less than 75 DEG C., e.g. fluorinated alkanes. The alcoxysilane is incorporated in amounts of from 0.1% to 5.0% by weight of the hydroxy group containing polymer, and in addition, 0.01% to 2.5% by weight of a block copolymer (MW. 1,000 to 10,000) or a silicone oil may also be added. Examples 1 to 3 describe the preparation of: Si [(OC3H6)8.6 OC8H17]4; CH3Si[(OC3H6)14.1 O.C8H17]3 and CH3Si[(OC2H4)15.5 (OC3H6)11.7OC8H17]3 and Examples 4 to 9 the preparation of polyurethane foams in presence of the products of Examples 1 to 3.
GB42558/61A 1961-11-28 1961-11-28 New silicon compounds Expired GB960240A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB42558/61A GB960240A (en) 1961-11-28 1961-11-28 New silicon compounds

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB42558/61A GB960240A (en) 1961-11-28 1961-11-28 New silicon compounds

Publications (1)

Publication Number Publication Date
GB960240A true GB960240A (en) 1964-06-10

Family

ID=10424952

Family Applications (1)

Application Number Title Priority Date Filing Date
GB42558/61A Expired GB960240A (en) 1961-11-28 1961-11-28 New silicon compounds

Country Status (1)

Country Link
GB (1) GB960240A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1694366B1 (en) * 1968-03-16 1970-11-12 Goldschmidt Ag Th Process for the production of polyurethane foams from polyethers
USRE30698E (en) 1973-01-10 1981-08-04 Castrol Limited Hydraulic fluids comprising orthosilicate esters
EP0162588A1 (en) * 1984-04-24 1985-11-27 Polyol International B.V. Preparation of polymer polyols

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1694366B1 (en) * 1968-03-16 1970-11-12 Goldschmidt Ag Th Process for the production of polyurethane foams from polyethers
USRE30698E (en) 1973-01-10 1981-08-04 Castrol Limited Hydraulic fluids comprising orthosilicate esters
EP0162588A1 (en) * 1984-04-24 1985-11-27 Polyol International B.V. Preparation of polymer polyols

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