Dichtung auf Basis von Butylkautschuk

A butyl rubber based sealant is provided comprising, calculated on the sealant, a) from 10 to 50% by weight (wt%) of butyl rubber, b) a hydrogenated styrenic block copolymer having at least two resinous endblocks of polymerized monovinyl arene and an elastomeric midblock of polymerized and subsequen...

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Bibliographic Details
Main Authors VERMUNICHT, GEERT E.A, ROUMACHE, OLIVIER
Format Patent
LanguageGerman
Published 11.10.2007
Subjects
ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE
ADHESIVES
CHEMISTRY
COMPOSITIONS BASED THEREON
COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
DYES
MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED BONDS
METALLURGY
MISCELLANEOUS APPLICATIONS OF MATERIALS
MISCELLANEOUS COMPOSITIONS
NATURAL RESINS
NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL
ORGANIC MACROMOLECULAR COMPOUNDS
PAINTS
POLISHES
THEIR PREPARATION OR CHEMICAL WORKING-UP
USE OF MATERIALS AS ADHESIVES
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Summary:A butyl rubber based sealant is provided comprising, calculated on the sealant, a) from 10 to 50% by weight (wt%) of butyl rubber, b) a hydrogenated styrenic block copolymer having at least two resinous endblocks of polymerized monovinyl arene and an elastomeric midblock of polymerized and subsequently hydrogenated conjugated diene or dienes, c) from 0 to 30 wt% of one or more polyolefins, d) from 0 to 60 wt% of one or more plasticizers and e) from 0 to 80 wt% of one or more fillers and filler deactivators, f) from 0 to 30 wt% of one or more tackifying resins, g) from 0 to 30 wt% of one or more other additives, characterized in that component b) is a linear hydrogenated styrenic block copolymer having an apparent molecular weight in the range of from 200,000 to 500,000 or a radial hydrogenated styrenic block copolymer having an apparent molecular weight in the range of from n times 100,000 to 250,000, n equals the number of polymer arms, and component (a) has a content of hydrogenated 1,2-polymerized conjugated dienes (vinyl content) of greater than 40% and a content of poly(monovinyl arene) in the range of from 20 to 50%, wherein said hydrogenated styrenic block copolymer comprises no more than 5% by weight of the sealant and wherein said hydrogenated styrenic block copolymer comprises no more than 10% by weight of the butyl rubber/hydrogenated styrenic block copolymer blend.
Bibliography:Application Number: DE20046003792T