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Rolf Wiedermann

Bayer

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Publication

Featured researches published by Rolf Wiedermann.

Journal of Cellular Plastics | 1991

Aging Characteristics of Polyurethane Rigid Foam with Alternate Blowing Agents

Rolf Wiedermann; Gerhard Heilig; Martin Hoppe

The increasing replacement of perhalogenated chlorofluorocarbons (CFCs) by such alternate products as blowing agents for PU rigid foams is the main issue of today’s technical development. Essential criteria for this application are: environmental acceptance, availability, applicability, price and-last but not least-a good long term insulation capacity. The paper gives a survey of PU relevant physical characteristics of these products.

Archive | 1997

Process for the preparation of rigid polyurethane foams

Norbert Adam; Werner Dietrich; Manfred Dr. Giersig; Reinhard Dr. Kaufung; Rolf Wiedermann

Archive | 1990

Liquid polyisocyanate mixtures, process for their preparation and their use for the preparation of polyurethane foams

Herbert Gebauer; Pramod Gupta; Gerhard Heilig; Rolf Wiedermann

Archive | 1979

Process for the production of plastics containing isocyanurate groups and urethane groups

Rolf Wiedermann; Rudolf Merten; Werner Dietrich; Wolfgang Schmitz

Archive | 1977

Poly:isocyanate binder for lignocellulose materials, esp. wood chips - is poly:phenyl polymethylene poly:isocyanate of specific isomer content

Werner Dietrich; Guenther Dr Ellendt; Herbert Gebauer; Hans Immo Sachs; Rolf Wiedermann

Archive | 1992

Method for preparing halogen-free hard foam substances containing urethane groups and predominantly isocyanurate groups

Rolf Wiedermann; Gerhard Heilig; Martin Hoppe; Stephan Wendel; Wolfgang Schmitz

Archive | 1985

Rigid, closed-cell, flame-resistant polyurethane foams

Manfred Kapps; Rolf Wiedermann; Norbert Adam; Eckehard Weigand

Archive | 1991

Process for the production of rigid foams containing urethane and predominantly isocyanurate groups and their use as insulating materials

Gerhard Heilig; Rolf Wiedermann; Wolfgang Schmitz

Archive | 1989

Process for introducing flowing agents to at least one of the fluid reaction components used in the production of cellular polyurethane materials

Rolf Wiedermann; Erwin Hoffmann; Reinhard Dr. Kaufung; Kurt Krippl; Klaus Schulte

Archive | 2010

Verfahren zur herstellung von polyurethan-hartschaumstoffen

Norbert Adam; Werner Dietrich; Manfred Dr. Giersig; Reinhard Dr. Kaufung; Rolf Wiedermann

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Norbert Adam

Bayer

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Wolfgang Schmitz

Bayer

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Gerhard Heilig

Bayer

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Peter Haas

Bayer

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Stephan Wendel

Bayer

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Reinhard Dr. Kaufung

Bayer

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Herbert Gebauer

Bayer

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Eckehard Weigand

Bayer

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Friedrich Boberg

Hochschule Hannover

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Johannes Dr Blahak

Bayer

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