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Halogen-free, fireproofing polyurethane hard foam for fire protection applications

A polyurethane and rigid foam technology, applied in the field of polyurethane rigid foam, can solve problems such as high smoke concentration and strong carbon dust

Inactive Publication Date: 2006-04-05
POLYMERICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

A known disadvantage of adding expanded graphite to polyurethane is the formation of dense carbon dust and fly ash and high smoke concentrations in fires

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach

[0012] According to a preferred embodiment of the invention, the polyol component (A) contains 5-30 mass %, preferably 10-20 mass % polyether polyol, 3-30 mass %, preferably 5-20 mass % amino polyol .

[0013] As the polyether polyol used for the polyurethane rigid foam of the present invention, it is preferable to use a polyether polyol having 3-5 functional groups and a hydroxyl value of 300-700. As aminopolyols for polyurethane rigid foams according to the invention, preference is given to using aminopolyols with 2-5 functional groups and an OH-value of 200-700, in the polyisocyanate component (B) preferably polyisocyanate functional groups > 2 And the NCO content is 20-40%. Said compositions are well known to those skilled in the art and are commercially available.

[0014] As polyisocyanate components (B) for the rigid polyurethane foams of the invention, there may be, for example, aliphatic, cyclic, araliphatic (araliphatische), aromatic or heterocyclic polyisocyanates...

Embodiment

2.0g

[0030] Place equal sized volumes of both components in a dry container, such as a two-component cartridge. In the mixing of the two components with the aid of a static mixer, a foaming reaction takes place which, depending on its viscosity, can be introduced into closed openings so that the material foams again and hardens.

[0031] The resulting material corresponds to building material class B1 according to DIN 4102-1, which is superior in fine cells, homogeneous structure, good mechanical strength and excellent adhesive strength compared to ore materials and metal building materials.

[0032]The rigid polyurethane foams thus produced can be used in walls, floors and / or openings in floors of buildings, in cable and pipeline installations, as fastening systems for smoke exhaust pipes, electrical ductwork, fire-resistant ceilings and other fire-resistant components components.

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PUM

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Abstract

The invention provides a halogen free two-component-foam material system which is used for fire control for non-combustible building material. The invention describes a two-component-foam system used for preparing halogen free and inflated control foam which contains a poluhydric alcohol constituent (A) and a polyisocyanate constituent (B); the poluhydric alcohol constituent (A) comprises at least one polyether glycol, one catalyser used for the reaction of polyol and polyisocyanate and water as the foaming agent; the polyisocyanate constituent (B) comprises at least a polyisocyanate and other auxiliary agents and / or addition materials as required; wherein, the mixture ratio of the polyol and the polyisocyanate is selected to enable the isocyanate index to be larger than 110 when mixing the poluhydric alcohol constituent (A) and the polyisocyanate constituent (B). As a fire control agent, the combination of expandable graphite and ABC- fire-extinguishing powder is used.

Description

technical field [0001] The present invention relates to a halogen-free, fire-resistant polyurethane rigid foam based on isocyanate and its use for fire protection purposes. Background technique [0002] Rigid isocyanate-based foams, in particular polyurethane and isocyanate foams, have been known for a long time. An overview of the preparation and use of isocyanate-based rigid foams has been given in Kunstoffhandbuch, Band VII, Polyurethane, Carl-Hanser-Verlag, München, 1st edition 1966 (edited by Dr. R. Vieweg and Dr. A. Höchtlein), and pp. Published in 2nd Edition 1983 and 3rd Edition 1993 (edited by Dr. G. Oertel). [0003] In these isocyanate-based rigid foams, they are used to replace the currently customary, but also different, halogen-containing materials. After replacing FCKW with halogen-containing expandable porous agents, such as HFCKW and HFKW, there appears to be a tendency to replace halogen-containing blowing agents by halogen-free materials such as carbon d...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08K3/00C08L75/04C09K21/02C08K3/26C08K3/04C08G18/48C08J9/00
CPCC08J2205/10C08J2375/04C08J9/0066C08G2101/0083C08K3/26C08K3/04C09K21/02C08G18/482C08G2110/0083C08L75/04
Inventor 阿涅拉·莱斯特纳彼得·布鲁森巴赫安德烈·莱斯特纳汉斯·西格哈德·彼得拉斯
Owner POLYMERICS