EP0549222

• Main Author: DURFEE, LOREN DEAN
• Format: Patent
• Language: English
• Published: 09.03.1994
• Edition: 5
• Subjects: ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAININGELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN,SULFUR, SELENIUM OR TELLURIUM; CHEMISTRY; FUELS; HUMAN NECESSITIES; HYGIENE; LUBRICANTS; LUBRICATING COMPOSITIONS; MEDICAL OR VETERINARY SCIENCE; METALLURGY; ORGANIC CHEMISTRY; PEAT; PETROLEUM, GAS OR COKE INDUSTRIES; PREPARATIONS FOR MEDICAL, DENTAL, OR TOILET PURPOSES; SPECIFIC USE OF COSMETICS OR SIMILAR TOILETPREPARATIONS; TECHNICAL GASES CONTAINING CARBON MONOXIDE; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATINGINGREDIENTS IN A LUBRICATING COMPOSITION

A cyclopolysiloxane having the general structure wherein Q is a monovalent siloxane moiety selected from the group consisting of the structure (R3SiO)2SiR-A- and the structure GR2SiOSiR2 -A'-, in which A is a divalent hydrocarbon group having 4 to 14 carbon atoms and A' is a divalent hydrocarbon group having 2 to 18 carbon atoms, each R' group and each G group is independently selected from the group consisting of an alkyl radical having 1 to 30 carbon atoms, a phenyl radical, an arylalkyl group and a halogenated alkyl radical having 3 to 6 carbon atoms, each R is independently selected from the group consisting of an alkyl radical having 1 to 30 carbon atoms, a phenyl radical, an arylalkyl group, a halogenated alkyl radical having 3 to 6 carbon atoms and hydrogen and x and y are each integers, with the proviso that (x + y) is an integer having a value of 4 to 6 inclusive and y is at least 1.