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Dive into the research topics where Martin Hoppe is active.

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Featured researches published by Martin Hoppe.


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 | 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 | 1992

Liquid, light-colored polyisocyanate mixtures and a process for their production

Herbert Gebauer; Pramod Gupta; Martin Hoppe; Rolf Wiedermann


Archive | 1995

Process for the preparation of rigid urethane foams, optionally containing isocyanurate groups

Rolf Wiedermann; Hans-Ulrich Weber; Martin Hoppe


Archive | 1994

Process for the production of low viscosity high functionality, light colored polyethers based on sucrose

Pramod Gupta; Hans-Joachim Sandhagen; Werner Dr. Betz; Ulrich Leyrer; Martin Hoppe


Archive | 1994

Clear low viscosity high-functional polyethers based on saccharose.

Pramod Gupta; Hans-Joachim Sandhagen; Werner Dr. Betz; Ulrich Leyrer; Martin Hoppe


Archive | 1994

Production of low viscosity high functionality light colored polyether based on sucrose

Werner Dr. Betz; Pramod Gupta; Martin Hoppe; Ulrich Leyrer; Hans-Joachim Sandhagen; ヴエルナー・ベツツ; ウルリツヒ・レイラー; ハンス−ヨアヒム・ザントハーゲン; プラモド・グプタ; マルテイン・ホツプ


Archive | 1993

Liquid, light-colored poylisocyanate mixtures and a process for their production

Herbert Gebauer; Pramod Gupta; Martin Hoppe; Rolf Wiedermann


Archive | 1992

Procede de production de mousses de polyurethanne rigides non halogenees contenant des groupes urethannes, surtout des groupes isocyanurates, et leur utilisation comme materiaux isolants

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


Archive | 1992

A PROCESS FOR THE PRODUCTION OF HALOGEN-FREE RIGID FOAMS CONTAINING URETHANE AND PREDOMINANTLY ISOCYANURATE GROUPS AND THEIR USE AS INSULATION MATERIALS

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

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