EP 2373739 A1 20111012 - PNEUMATIC OBJECT PROVIDED WITH A GAS-TIGHT LAYER COMPRISING A THERMOPLASTIC ELASTOMER AND EXPANDED THERMOPLASTIC MICROSPHERES
Title (en)
PNEUMATIC OBJECT PROVIDED WITH A GAS-TIGHT LAYER COMPRISING A THERMOPLASTIC ELASTOMER AND EXPANDED THERMOPLASTIC MICROSPHERES
Title (de)
DRUCKLUFTOBJEKT MIT GASDICHTER SCHICHT, DIE EIN THERMOPLASTISCHES ELASTOMER UND EXPANDIERTE THERMOPLASTISCHE MIKROKUGELN UMFASST
Title (fr)
OBJET PNEUMATIQUE POURVU D'UNE COUCHE ETANCHE AUX GAZ A BASE D'UN ELASTOMERE THERMOPLASTIQUE ET DE MICROSPHERES THERMOPLASTIQUES EXPANSEES
Publication
Application
Priority
- EP 2009008504 W 20091130
- FR 0858238 A 20081203
Abstract (en)
[origin: WO2010063428A1] The invention relates to a pneumatic object provided with an elastomer layer sealed against an inflation gas such as air, said layer comprising at least, as the predominant elastomer, a thermoplastic polystyrene and polyisobutylene block copolymer, such as a SIBS (styrene/isobutylene/styrene) copolymer, and expanded thermoplastic microspheres at a level preferably from 1 to 30 pce. Said copolymer contains preferably from 5 to 50 wt % of styrene, the number-average molecular weight thereof is from 30000 to 500000 g/mol, and the Tg thereof is less than -20°C. Optionally, the sealed elastomer layer also comprises, as a plasticizer, an extension oil, particularly a polybutene oil, at a level preferably between 5 and 100 pce. Said sealed layer has not only excellent sealing properties but also a density and a hysteresis that are both comparatively lower than butyl rubber layers. The invention particularly relates to a tire for an automobile.
IPC 8 full level
C08L 53/00 (2006.01); B32B 25/04 (2006.01); B60C 1/00 (2006.01)
CPC (source: EP US)
C08L 53/00 (2013.01 - EP US); Y10T 152/10495 (2015.01 - EP US); Y10T 428/1334 (2015.01 - EP US)
Citation (search report)
See references of WO 2010063428A1
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO SE SI SK SM TR
DOCDB simple family (publication)
FR 2939141 A1 20100604; FR 2939141 B1 20121214; CN 102239217 A 20111109; EP 2373739 A1 20111012; JP 2012510403 A 20120510; JP 5539379 B2 20140702; US 2011315291 A1 20111229; WO 2010063428 A1 20100610
DOCDB simple family (application)
FR 0858238 A 20081203; CN 200980148760 A 20091130; EP 09760498 A 20091130; EP 2009008504 W 20091130; JP 2011538886 A 20091130; US 200913132769 A 20091130