Abstract: The present invention relates to ionomers comprising a reaction product of the reaction between a) a halogenated isoolefin copolymer and b) a nucleophile having no pendant vinyl group and a nucleophile comprising at least one pendant vinyl group. The present invention also relates to a method of preparing and curing these ionomers.
Type:
Application
Filed:
December 18, 2013
Publication date:
April 21, 2016
Applicant:
Lanxess Butyl Pte. Ltd.
Inventors:
Dana K. ADKINSON, Jacob RAWSKI, Sean MALMBERG, Gregory J.E. DAVIDSON
Abstract: Surface modification methods based on a combination of plasma and chemical treatments render an unfilled butyl rubber surface highly reactive toward organosilanes, allowing formation of an organosilane self-assembled monolayer (SAM). Plasma oxidation of the butyl rubber surface followed by vapour deposition of SiCl4 produces a hydrophilic surface suitable for anchoring organosilanes. Fabrication of SAMs on this hydrophilic butyl rubber surface with n-octadecyltrichlorosilane (OTS) and trichloro(1H,1H,2H,2H-perfluorooctyl)silane (FOTS) via vapour deposition resulted in a 15% and 25% decrease in gas permeability, respectively, with no change in optical transparency of the butyl rubber.
Type:
Application
Filed:
December 16, 2013
Publication date:
November 19, 2015
Applicants:
LANXESS Butyl PTE. LTD, The University of Windsor
Inventors:
Tricia Breen CARMICHAEL, Akhil VOHRA, Lorenzo FERRARI, Natalie SUHAN