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1. WO2000039497 - PRE-INSULATED PIPES AND PROCESS FOR THEIR PRODUCTION

Publication Number WO/2000/039497
Publication Date 06.07.2000
International Application No. PCT/EP1999/010289
International Filing Date 20.12.1999
Chapter 2 Demand Filed 23.06.2000
IPC
B29C 44/32 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
44Shaping by internal pressure generated in the material, e.g. swelling or foaming
20for articles of indefinite length
32Incorporating or moulding on preformed parts, e.g. linings, inserts or reinforcements
F16L 59/14 2006.01
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
16ENGINEERING ELEMENTS OR UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
LPIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
59Thermal insulation in general
14Arrangements for the insulation of pipes or pipe systems
CPC
B29C 44/322
BPERFORMING OPERATIONS; TRANSPORTING
29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
44Shaping by internal pressure generated in the material, e.g. swelling or foaming ; ; Producing porous or cellular expanded plastics articles
20for articles of indefinite length
32Incorporating or moulding on preformed parts, e.g. linings, inserts or reinforcements
322the preformed parts being elongated inserts, e.g. cables
F16L 59/143
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
LPIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
59Thermal insulation in general
14Arrangements for the insulation of pipes or pipe systems
143Pre-insulated pipes
Applicants
  • SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ B.V. [NL/NL]; Carel van Bylandtlaan 30 NL-2596 HR The Hague, NL (AllExceptUS)
  • KELLNER, Juergen [DE/BE]; BE (UsOnly)
  • MORO, Franco [IT/BE]; BE (UsOnly)
  • MORTON, Patrick, Robert, André, René [BE/BE]; BE (UsOnly)
Inventors
  • KELLNER, Juergen; BE
  • MORO, Franco; BE
  • MORTON, Patrick, Robert, André, René; BE
Agents
  • SWINNEN Anne Marie; Huntsman ICI (Europe) BVBA Huntsman Polyurethanes Intellectual Property Everslaan 45 B-3078 Eversberg, BE
Priority Data
98204452.128.12.1998EP
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) PRE-INSULATED PIPES AND PROCESS FOR THEIR PRODUCTION
(FR) CONDUITES PREISOLEES ET LEUR PROCEDE DE PRODUCTION
Abstract
(EN)
Pre-insulated pipe comprising an inner pipe surrounded by a casing with arranged thereinbetween a single one-piece layer of insulation material comprising a polyisocyanurate-modified polyurethane foam. These pre-insulated pipes can be produced in a continuous process, wherein a foaming mixture comprising (a) a suitable polyol component, (b) a suitable polyisocyanate component in such amount that the isocyanate index is at least 150, (c) at least one polyisocyanurate catalyst and optionally one or more polyurethane catalysts, and (d) suitable ancillary chemicals, is continuously brought into contact with the outer surface of an inner pipe and is allowed to expand into a polyisocyanurate-modified polyurethane foam, after which a casing is applied around this a polyisocyanurate-modified polyurethane foam.
(FR)
L'invention porte sur ces conduites préisolées comportant un tube intérieur entouré d'une enveloppe et un matériau isolant de polyuréthane expansé modifiée au polyisocyanurate d'une seule pièce les séparant. Lesdites conduites peuvent être produites selon un processus continu selon lequel on met en contact avec la surface extérieure du tube intérieur un mélange de mousse comportant: (a) un composant adéquate de polyol, (b) un composant adéquate de polyisocyanate en quantité telle que l'indice d'isocyanate soit d'au moins 150, (c) au moins un catalyseur du polyisocyanurate et facultativement un ou plusieurs catalyseurs du polyuréthane, et (d) des produits chimiques auxiliaires idoines. Ledit mélange se transforme en polyuréthane expansé modifiée au polyisocyanurate après quoi on applique l'enveloppe autour dudit polyuréthane expansé.
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