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EP0258746A2 Expired / Lapsed EP ⏱️ 0.0 years remaining

Grafted siloxane elastomers having a notch impact resistance

Assignee: Bayer AG
•
Filing: 1987-08-20
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Granted: —
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Expires: 2007-08-20
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Abstract

Abstract Translated from German Thermoplastische Pfropfpolymerisate aus: I. 10 - 80 Gew.-Teilen eines wenigstens teilvernetzten, teilchenförmigen Siliconkautschukes, enthaltend im wesentlichen chemisch eingebaute Gruppen der all­gemeinen Formel a) R₂SiO, RSiO 3/2 , R₂R³SiO 1/2 , SiO 4/2 sowie b) R¹CH=CH-(R²)- und c) H-S- wobei R = einwertiger, gesättigter Kohlenwasserstoff-­Rest, gegebenenfalls durch SH, Halogen, C₁-­C₆-Oxyalkyl substituiert R¹ = H, C₁-C₆-Alkyl, R² = Einfachbindung, C₁-C₄-Alkylen, R³ = R oder OH als Pfropfgrundlage und II. 90 - 20 Gew.-Teilen eines Polymerisates aus we­nigstens einem α,β-ungesättigten, olefinischen, polymerisierbaren Monomeren als Pfropfauflage. Thermoplastic graft polymers made from: I. 10 - 80 parts by weight of an at least partially crosslinked, particulate silicone rubber, essentially containing chemically incorporated groups of the general formula a) R₂SiO, RSiO 3/2 , R₂R³SiO 1/2 , SiO 4/2 and b) R¹CH = CH- (R²) - and c) HS in which R = monovalent, saturated hydrocarbon radical, optionally substituted by SH, halogen, C₁-C₆-oxyalkyl R¹ = H, C₁-C₆ alkyl, R² = single bond, C₁-C₄ alkylene, R³ = R or OH as a graft base and II. 90-20 parts by weight of a polymer of at least one α, β-unsaturated, olefinic, polymerizable monomer as a graft.

Inventors

  • 👤 Christian Dr. Lindner
  • 👤 Hans-Jürgen Dr. Kress
  • 👤 Herbert Dr. Eichenauer
  • 👤 Karl-Heinz Dr. Ott
  • 👤 Wolfgang Dr. Grape

Bibliographic Details

Application Number —
Jurisdiction EP
Data Source google_patents
Last Synchronized 2026-11-08 15:30
CPC Classifications
C; C08; C08G; C08G77/00; C08G77/42; C08G77/442; C08F; C08F283/00; C08F283/12; C08F283/124

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