GB809166A - Improvements in or relating to heat-resistant high tensile silicone rubber gum compositions and method of vulcanizing them - Google Patents

Improvements in or relating to heat-resistant high tensile silicone rubber gum compositions and method of vulcanizing them

Info

Publication number
GB809166A
GB809166A GB18984/56A GB1898456A GB809166A GB 809166 A GB809166 A GB 809166A GB 18984/56 A GB18984/56 A GB 18984/56A GB 1898456 A GB1898456 A GB 1898456A GB 809166 A GB809166 A GB 809166A
Authority
GB
United Kingdom
Prior art keywords
siloxane
sulphur
parts
per
vulcanizing
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
GB18984/56A
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.)
Connecticut Hard Rubber Co
Original Assignee
Connecticut Hard Rubber Co
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 Connecticut Hard Rubber Co filed Critical Connecticut Hard Rubber Co
Publication of GB809166A publication Critical patent/GB809166A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/34—Silicon-containing compounds
    • C08K3/36—Silica
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K5/00—Use of organic ingredients
    • C08K5/36—Sulfur-, selenium-, or tellurium-containing compounds
    • C08K5/39—Thiocarbamic acids; Derivatives thereof, e.g. dithiocarbamates

Landscapes

  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Compositions Of Macromolecular Compounds (AREA)

Abstract

A composition comprises (1) an organopolysiloxane convertible to the solid elastic state and having from 1.95 to 2 hydrocarbon radicals per Si atom; (2) a powdered filler capable of vulcanizing the siloxane and consisting essentially of substrate particles of silica in a supercolloidal state of subdivision having bound thereto alkoxy groups through Si-O-C bonds and the carbon attached to oxygen is also attached to hydrogen, the substrate particles having an average surface area from 250 to 400 square metres per gram; and (3) from 0.01 to 6.0 per cent by weight of (1) of tetramethylthiuramdisulphide, tetraethylthiuramdisulphide or dialkyldithiocarbamate derivatives of the formula <FORM:0809166/IV (a)/1> where R is an alkyl radical, M is Na, Bi, Zn, Pb, Te, Se, another <FORM:0809166/IV (a)/2> radical, the radical <FORM:0809166/IV (a)/3> an organic cation, piperidinium or sulphur, and n is an integer from 1 to 4 depending on the valency of M. The filler is preferably used in amount of 10 to 70 parts per 100 parts of siloxane. Antioxidants may also be added in amount of 0.1 to 6.0 parts per 100 parts of siloxane. Many examples of curing accelerators (3) and antioxidants are given. In examples methylvinyl-, ethylvinyl-, dimethyl- and methylphenyl-siloxane gums are compounded with the silica fillers, specified curing accelerators with or without sulphur, and vulcanized. Comparative examples are given in which sulphur or benzoyl peroxide is used as the curing accelerator. Zinc oxide is preferably added where dialkthiocarbamate derivatives are used as curing accelerators. Specifications 751,282, 762,180, 790,370, 801,134 and U.S.A. Specifications 2,657,149 and 2,727,876 are referred to.
GB18984/56A 1955-06-29 1956-06-19 Improvements in or relating to heat-resistant high tensile silicone rubber gum compositions and method of vulcanizing them Expired GB809166A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US809166XA 1955-06-29 1955-06-29

Publications (1)

Publication Number Publication Date
GB809166A true GB809166A (en) 1959-02-18

Family

ID=22160474

Family Applications (1)

Application Number Title Priority Date Filing Date
GB18984/56A Expired GB809166A (en) 1955-06-29 1956-06-19 Improvements in or relating to heat-resistant high tensile silicone rubber gum compositions and method of vulcanizing them

Country Status (1)

Country Link
GB (1) GB809166A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2487324A1 (en) * 1980-07-24 1982-01-29 Sumitomo Chemical Co

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2487324A1 (en) * 1980-07-24 1982-01-29 Sumitomo Chemical Co

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