Bonding of rubber particles
US6565918B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 10, 2001 |
| Grant date | May 20, 2003 |
| Priority date | — |
| Expiry date | Jul 10, 2021 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L75/08
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A coherent rubber composition is produced by: (a) coating the rubber particles with a polymeric unsaturated hydrocarbon compound; (b) mixing the resulting coated rubber particles with a bonding material; and (c) allowing and/or causing the resulting mixture to form the desired coherent rubber composition. The polymeric unsaturated hydrocarbon compound is conveniently a compound having a long chain aliphatic structure, for example a hydroxyl-substituted polymer of 1,3-butadiene. The bonding material is conveniently a pre-polymer for a polyurethane or polyurea, having terminal —NCO groups. Coherent rubber compositions obtained by the method are well suited for use as play surfaces or sports surfaces.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.