Process for the production of open-celled rigid polyurethane foams useful as insulating materials

• Main Authors: SCHOLL; HANS-JOACHIM, WELTE; RAINER
• Format: Patent
• Language: English
• Published: 16.12.1997
• Edition: 6
• Subjects: AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING; BLASTING; BUILDING; CEILINGS; CHEMISTRY; COMPOSITIONS BASED THEREON; COMPOSITIONS OF MACROMOLECULAR COMPOUNDS; ENGINEERING ELEMENTS AND UNITS; FIXED CONSTRUCTIONS; FLOORS; GENERAL BUILDING CONSTRUCTIONS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS; GENERAL PROCESSES OF COMPOUNDING; HEATING; INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULARARTICLES; INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS; INSULATION OR OTHER PROTECTION OF BUILDINGS; JOINTS OR FITTINGS FOR PIPES; LIGHTING; MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS; MEANS FOR THERMAL INSULATION IN GENERAL; MECHANICAL ENGINEERING; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; PERFORMING OPERATIONS; PIPES; ROOFS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR; SHAPING OR JOINING OF PLASTICS; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; THEIR PREPARATION OR CHEMICAL WORKING-UP; THERMAL INSULATION IN GENERAL; TRANSPORTING; WALLS, e.g. PARTITIONS; WEAPONS; WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL; WORKING-UP

Completely open-celled rigid polyurethane foams are produced by subjecting closed-celled or partially closed-celled rigid polyurethane foams to applied external pressure. These open-celled foams are useful as filling material in insulating panels or as insulating foams.