Pneumatic tire having a multilayered innerliner
US5178702A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 4, 1991 |
| Grant date | Jan 12, 1993 |
| Priority date | — |
| Expiry date | Apr 4, 2011 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S152/16
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The present invention relates to a pneumatic rubber tire having an integral innerliner characterized by a top layer and a rubber laminate having at least three additional layers. At least two of the three layers are barrier layers and comprise a sulfur cured rubber composition containing, based on 100 parts by weight of rubber, 100 parts of an acrylonitrile/diene copolymer rubber having an acrylonitrile content ranging from about 30 to about 45 percent and from about 25 to about 150 parts by weight of a platy filler selected from the group consisting of talc, clay, mica or mixtures thereof. The thickness of each acrylonitrile/diene barrier layer ranges from about 25 microns to 380 microns. Between the two layers of acrylonitrile/diene copolymer is at least one non-barrier layer of a sulfur cured rubber selected from the group consisting of natural rubber, halogenated butyl rubber, butyl rubber, cis-1,4-polyisoprene, styrene-butadiene rubber, cis-1,4-polybutadiene, styrene/isoprene/butadiene rubber or mixtures thereof. The laminate may contain from about 3 to 100 individual layers.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.