Laminated products of olefinic thermoplastic elastomer and constructional gaskets
US6589664B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 1, 2000 |
| Grant date | Jul 8, 2003 |
| Priority date | — |
| Expiry date | Feb 15, 2021 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31931
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
The present invention relates to a laminate comprising an olefinic thermoplastic elastomer which comprises:(a) a substratum layer comprising an olefinic thermoplastic elastomer composition (A) having the following characteristics {circle around (1)} to {circle around (3)}:{circle around (1)}9≦Y−0.43X≦27  (1) wherein X denotes the JIS A-hardness value (a dimensionless value) of the olefinic thermoplastic elastomer composition determined according to the prescription of JIS K6301 and Y represents the compression set value (expressed by %) of the olefinic thermoplastic elastomer composition determined according to the prescription of JIS K6301 under a condition of 70° C. and 22 hours,{circle around (2)} a tensile strength value in the range from 5 to 30 MPa determined according to the prescription of JIS K6301 and{circle around (3)} an elongation set value of 18% or less determined according to the prescription of JIS K6301, and(b) a surface skin layer comprising an ultra high molecular weight polyolefin composition (B) having an intrinsic viscosity [&eegr;] measured in decalin at 135° C. in the range from 3.5 to 8.3 dl/g; and a constructional gas…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.