Abstract: The invention relates to a method of producing rectifier parts which are made from a laminate composite material comprising reinforcing fibers that are embedded in a heat-polymerized polyimide resin matrix. The aforementioned parts comprise an inner platform, an outer platform and at least one solid blade which connects said platforms.
Type:
Grant
Filed:
February 9, 2004
Date of Patent:
May 5, 2009
Assignee:
Aircelle
Inventors:
Jean-Pierre Chevin, Pascal Eric Jean Marchant
Abstract: Polyisocyanate-based reaction systems, a pultrusion process of those systems to produce reinforced matrix composites, and to composites produced thereby. The polyisocyanate-based systems are mixing activated reaction systems that include a polyol composition, an optional chain extender or crosslinker, and a polyisocyanate. The polyisocyanate-based systems exhibit improved processing characteristics in the manufacture of fiber reinforced thermoset composites via reactive pultrusion.
Abstract: Process for producing single layer and multilayer polyolefin foam pipes with improved compression resistance having a polyolefin foam layer which consists of mixtures of modified propylene polymers having strain hardening behaviour or propylene homopolymers with a stereospecificity index >98% or propylene copolymers with a stereospecificity index of the homopolymer matrix of >96%. The polyolefin foam pipes include coated steel pipes for transporting crude oil or gas products or district heating applications, single layer pipes for insulation purposes and for non- or low-pressure applications and multilayer plastic pipes for the transportation of hot or cold fluids.
Type:
Grant
Filed:
January 10, 2006
Date of Patent:
December 9, 2008
Assignee:
Borealis GmbH
Inventors:
Achim Hesse, Tony Lindstroem, Carl-Gustaf Ek, Cecilia Rydin, Allan Boye Hansen