Glass fiber-reinforced oxymethylene polymer molding compositions having mechanical properties enhanced by amino-formaldehyde resin coupling agents
US4801626A · kind A · utility
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5Claims
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Key dates
| Filing date | Sep 16, 1986 |
| Grant date | Jan 31, 1989 |
| Priority date | — |
| Expiry date | Sep 16, 2006 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S264/53
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Mechanical properties, especially tensile and flexural properties and impact strength, of glass fiber reinforced oxymethylene polymer molding compositions can be enhanced by incorporating into the molding composition an effective amount of a prepolymeric amino resin, whereby the glass fiber reinforcing agent and the oxymethylene polymer are coupled. The amino resin can be a condensation product of formaldehyde and melamine, urea, guanidine, guanamine or a substituted guanamine. An acid catalyst is preferably employed to promote the cross-linking of the prepolymeric amino resin.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.