Cured unsaturated polyest-polyurethane highly filled resin materials and process for preparing them
US5604266A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Apr 15, 1996 |
| Grant date | Feb 18, 1997 |
| Priority date | — |
| Expiry date | Apr 15, 2016 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02W30/91
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The present invention is directed to a rigid or semirigid, filled resin material having a continuous phase which is a matrix containing a complex crosslinked network having an unsaturated polyester-polyurethene containing resin having fine multisize reinforcing particles and dispersed filler particles dispersed therein. The polyester-polyurethene network of the complex crosslinked network may interact with other polymer networks in the continuous phase either by crosslinking or by forming an interpenetrating polymer network. The complex crosslinked network immobilizes the fine multisize reinforcing particles and reacts with at least a surface layer of the dispersed filler particles. The present invention is also directed to a process for preparing the above rigid or semirigid, lightweight resin material, and to a composition for use in this process. The material of the present invention is useful in a variety of applications, and can be easily varied and modified to include a wide variety of fine multisize reinforcing particles and dispersed filler particles, and to function in a wide variety of uses.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.