Antistatic and adherent compositions based on polyamide
US5916945A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 18, 1996 |
| Grant date | Jun 29, 1999 |
| Priority date | — |
| Expiry date | Dec 18, 2016 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/3154
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
The present invention relates to antistatic and adherent compositions based on polyamide, which can be employed especially for the manufacture of composite materials and articles, such as multilayer pipes and/or conduits for conveying and/or storing hydrocarbons. The compositions contain carbon black and are employed for the production of pipes, containers and drums including: PA1 an inner layer in contact with the hydrocarbons, based on the said antistatic and adherent composition, PA1 a middle layer made of fluoropolymer, preferably of polyvinylidene fluoride, and PA1 an outer layer of polyamide, these layers being bonded to each other respectively by layers of adhesive binder. The invention also relates to a process for preparing these items.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.