GB862469A - Organosilicon compositions - Google Patents

Organosilicon compositions

Info

Publication number
GB862469A
GB862469A GB9046/59A GB904659A GB862469A GB 862469 A GB862469 A GB 862469A GB 9046/59 A GB9046/59 A GB 9046/59A GB 904659 A GB904659 A GB 904659A GB 862469 A GB862469 A GB 862469A
Authority
GB
United Kingdom
Prior art keywords
silane
replaced
except
units
perchloroethylene
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
GB9046/59A
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.)
Midland Silicones Ltd
Original Assignee
Midland Silicones 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 Midland Silicones Ltd filed Critical Midland Silicones Ltd
Publication of GB862469A publication Critical patent/GB862469A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L83/00—Compositions of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon only; Compositions of derivatives of such polymers
    • C08L83/04—Polysiloxanes
    • 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
    • C08G77/04—Polysiloxanes
    • C08G77/20—Polysiloxanes containing silicon bound to unsaturated aliphatic groups
    • 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
    • C08G77/42—Block-or graft-polymers containing polysiloxane sequences
    • C08G77/44—Block-or graft-polymers containing polysiloxane sequences containing only polysiloxane sequences
    • 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
    • C08G77/70—Siloxanes defined by use of the MDTQ nomenclature

Abstract

A composition for rendering leather waterrepellent comprises a mixture of (1) from 15 to 50% (by weight) of a compound of the formula CH3Si(OR)3, where R is an acyl or alkyl radical containing from 1 to 4 inclusive C atoms; (2) 5 to 70% of a methylsiloxane copolymer composed of (CH3)3SiO 1/2 and SiO2 units the units being in such proportion that the ratio CH3 : Si is from 1 : 1 to 2 : 1 inclusive; and (3) 15 to 80% of a polysiloxane of the formula R1nSiO 4 - n/2 where each R1 is an alkyl or alkenyl radical containing less than 4 C atoms or a monocyclic aryl radical and n has an average value of from 2 to 2.9. The compositions can be employed in the form of solventless pastes or solutions in solvents, e.g. Stoddard solvent, naphtha, mineral spirits and perchloroethylene. Leather polishing waxes and dyes may also be added. In examples the compositions consist of (1) a 15% (wt.) solution in perchloroethylene of a liquid trimethylsilyl-end-blocked dimethylsiloxane, a copolymer of (CH3)3SiO0.5 and SiO2\t units and methyltriacetoxy silane; (2) as in (1) except that the acetoxysilane is replaced by methyltriethoxysilane; (3) as in (1) except that the dimethylsiloxane is replaced by a liquid phenylmethyl-, ethylvinyl- or propylmethylsiloxane; (4) as in (1) except that the acetoxy silane is replaced by methyl tri-methoxybutoxy or -isopropoxy silane. Methyl tripropionyloxy silane is also specified. Specifications 706,719 and 736,378 are referred to.
GB9046/59A 1958-05-29 1959-03-16 Organosilicon compositions Expired GB862469A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US862469XA 1958-05-29 1958-05-29

Publications (1)

Publication Number Publication Date
GB862469A true GB862469A (en) 1961-03-08

Family

ID=22197248

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9046/59A Expired GB862469A (en) 1958-05-29 1959-03-16 Organosilicon compositions

Country Status (1)

Country Link
GB (1) GB862469A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8997886B2 (en) 2009-10-01 2015-04-07 Vaderstad-Verken Aktiebolag Cultivator with two rows of discs in direction of travel

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8997886B2 (en) 2009-10-01 2015-04-07 Vaderstad-Verken Aktiebolag Cultivator with two rows of discs in direction of travel

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