Process for the preparation of composite material formed from a vulcanized elastomer in combination with a thermoplastic elastomer containing polyamide blocks, composite material thus formed and sports articles produced with the aid of said materials
US5624994A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 13, 1995 |
| Grant date | Apr 29, 1997 |
| Priority date | — |
| Expiry date | Oct 13, 2015 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08J2321/00
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The invention relates to a process for the preparation of composite material formed from a vulcanized elastomer, containing carboxylic acid or dicarboxylic acid anhydride groups, in combination with a thermoplastic elastomer containing polyamide blocks, which comprises vulcanizing an elastomer composition comprising said vulcanizable elastomer, a crosslinking system and, optionally, diverse adjuvants in a mold, one part of which is occupied by said thermoplastic elastomer containing polyamide blocks, the vulcanization temperature being between -15.degree. C. and +5.degree. C. with respect to the Vicat point of said thermoplastic elastomer containing polyamide blocks, the elastomer composition and the vulcanization kinetics being such that the material shows cohesive failure when subjected to stress for separation of the two elastomers. This process leads to composite materials which have excellent properties, in particular in respect of tensile strength (cohesive failure). The invention also relates to the composite material thus formed and its application in sports articles produced with the aid of said materials.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.