Multilayer composites coextruded with the use of impact-reinforced impervious resin compositions and their use for the manufacture of fuel storage vessels
US5230935A · kind A · utility
54Cited by
3References
10Claims
0Family size
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Key dates
| Filing date | Nov 27, 1992 |
| Grant date | Jul 27, 1993 |
| Priority date | — |
| Expiry date | Nov 27, 2012 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31928
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Multilayer composites coextruded with the use of polyolefins and of impact-reinforced impervious resin compositions based on hydrolysed copolymers of vinyl acetate and ethylene comprising, as an additive improving the impact strength, elastomeric copolymers of ethylene and propylene which are modified by grafting an .alpha.,.beta.-ethylenically unsaturated carboxylic acid and, preferably, by maleic anhydride. The coextruded multilayer composites are very particularly suitable for the manufacture of fuel storage vessels combining impact strength and high imperviousness to petrol and to petrol/alcohol mixtures.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.