Thermoplastic compositions having altered reclaimed rubber therein and method for making same
US5514721A · kind A · utility
15Cited by
4References
12Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 9, 1994 |
| Grant date | May 7, 1996 |
| Priority date | — |
| Expiry date | Nov 9, 2014 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02W30/62
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A composition containing reclaimed vulcanized rubber particles and capable of being recycled by melting is disclosed. A thermoplastic substrate is first melted, and an acid or base deflocculant and emulsifier for the rubber particles is added and mixed. The rubber particles are then added and heated with the substrate under high shear forces to redo the size of the particles, cause them to swell, and to emulsify the surface. The acid or base deflocculant is then neutralized to its isoelectric point, with the surfaces of the altered rubber particles in phase with the thermoplastic substrate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.