Reinforced polyoxymethylene molding composition capable of forming composite articles exhibiting improved physical properties
US4111887A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 28, 1977 |
| Grant date | Sep 5, 1978 |
| Priority date | — |
| Expiry date | Oct 28, 1997 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L71/00
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
An improved fiber reinforced polyoxymethylene molding composition is provided which when molded forms a composite article having improved physical properties (e.g., tensile strength and Izod impact strength). In admixture with the polyoxymethylene polymer and fibrous reinforcement (e.g., glass fiber) is provided a minor amount (as defined) of a certain polycarbodiimide (as defined) or a combination of the polycarbodiimide and a high molecular weight thermoplastic phenoxy resin. It is believed that the polycarbodiimide either alone or in combination with the thermoplastic phenoxy resin functions primarily by a complex mechanism which is incapable of simple explanation to enhance the adhesion between the chemical functionality of the oxymethylene polymer chain and the fibrous reinforcement.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.