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1. WO2020198905 - SILICONE ELASTOMER COMPOSITIONS AND ELASTOMERIC MATERIALS

Publication Number WO/2020/198905
Publication Date 08.10.2020
International Application No. PCT/CN2019/080316
International Filing Date 29.03.2019
IPC
C08L 83/07 2006.01
CCHEMISTRY; METALLURGY
08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
83Compositions 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
04Polysiloxanes
07containing silicon bound to unsaturated aliphatic groups
C08L 83/05 2006.01
CCHEMISTRY; METALLURGY
08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
83Compositions 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
04Polysiloxanes
05containing silicon bound to hydrogen
Applicants
  • DOW SILICONES CORPORATION [US]/[US]
  • WANG, Shaohui [CN]/[CN] (SC)
  • CHEN, Yusheng [CN]/[CN] (SC)
  • WANG, Rui [CN]/[CN] (SC)
  • WOLF, Hans Peter [DE]/[DE] (SC)
  • FISHER, Mark D. [US]/[US] (SC)
Inventors
  • WANG, Shaohui
  • CHEN, Yusheng
  • WANG, Rui
  • WOLF, Hans Peter
  • FISHER, Mark D.
Agents
  • SHANGHAI PATENT & TRADEMARK LAW OFFICE, LLC
Priority Data
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) SILICONE ELASTOMER COMPOSITIONS AND ELASTOMERIC MATERIALS
(FR) COMPOSITIONS D'ÉLASTOMÈRE DE SILICONE ET MATÉRIAUX ÉLASTOMÈRES
Abstract
(EN)
There is provided a self-lubricating silicone elastomer composition and a self-lubricating, elastomeric material made therefrom which has a low coefficient of friction and avoids the need for "self-bleeding". The composition comprises (i) 50 to 75%by weight of one or more polydiorganosiloxane polymer (s) containing from 0.01 to 0.1%by weight of alkenyl and/or alkynyl content; (ii) 3 to 15%by weight of a polydiorganosiloxane polymer having ≥ 0.5%by weight of alkenyl or alkynyl content; (iii) 10 to 35%by weight of reinforcing filler; and either or both of (iv) a peroxide catalyst; or (v) a hydrosilylation catalyst package.
(FR)
L'invention concerne une composition d'élastomère de silicone autolubrifiante et un matériau élastomère autolubrifiant, fabriqué à partir de ladite composition, présentant un faible coefficient de frottement et rendant une « purge automatique » inutile. La composition comprend (i) de 50 à 75 % en poids d'un ou de plusieurs polymères de polydiorganosiloxane renfermant une teneur en alcényle et/ou en alcynyle de 0,01 à 0,1 % en poids ; (ii) de 3 à 15 % en poids d'un polymère de polydiorganosiloxane ayant une teneur en alcényle ou en alcynyle ≥ 0,5 % en poids ; (iii) de 10 à 35 % en poids d’une charge de renforcement ; et (iv) un catalyseur peroxyde et/ou (v) un bloc catalyseur d'hydrosilylation.
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