Recticel

S.a. Prb

Eddie R Du Prez

Lucien Jourquin

Hubert S Creyf

Rudi Mortelmans

Bernard Debaes

Pierre Coppens

Patrick Demeyer

A process for the production of micro-cellular or non-cellular, light-stable elastomeric, flexible or semi-flexible polyurethane moldings which are especially suited for window encapsulation applications from a reaction mixture by the reaction injection molding process, wherein: A) an isocyanate component containing an isophorone diisocyanate (IPDI) trimer/monomer mixture having an NCO content of from 24.5 to 34% by weight, is reacted with B) isocyanate-reactive components comprising: b1) a polyetherpolyol having terminal OH groups, an average nominal functionality of 2 to 4, and an average equivalent weight of from 800 to 4000; b2) at least one chain extender component having as functional groups only aliphatic or alicyclic OH groups; b3) at least one amine-initiator component; in the presence of C) at least one catalyst component selected from the group consisting of organolead (II), organobismuth (III), and organotin (IV) catalysts; D) at least one pigment component, and E) at least one antioxidant/UV absorber component.

Light-stable elastomeric polyurethane mouldings and process for the production thereof

Method for manufacturing self-supporting synthetic trim parts and thus

A method for preparing a light stable polyurethane, sprayable by means of a spray pistol, wherein use is made of an active hydrogen containing compound, wherein the functional groups consist for at least 50% of an active CH.sub.2 OH, NH and/or NH.sub.2 group, the functionality of which varies from 2 to 8 and the equivalent weight of which is comprised between 100 and 3500, together with 2 to 300 parts, per 100 parts of said compounds of a chain extender and/or a cross-linker, the functional groups of which are OH groups, at least 50% of which are primary OH groups, the equivalent weight of which is less than 100 and the functionality of which varies from 2 to 6, and with a catalytic system which comprises at least an organic lead, bismuth and/or tin (IV) compound and at least an amine initiator, having a functionality of 2 to 6, an equivalent weight lower than or equal to 200, and at least one aliphatic NH.sub.2 or NH group.

Method for preparing and applying a sprayable, light stable polyurethane

A method for preparing a flexible polyurethane foam, wherein a polyether-polyol having an average molecular weight from 1000 to 8000 and an average functionality not larger than 4, is brought into reaction with an organic polyisocyanate in the presence of a foam stabilizer, a catalyst and blowing agent comprising methylformate, wherein a cross-linker/extender and/or amine catalyst with delayed action is added to said reaction mixture.

Method for preparing a flexible polyurethane foam

Fire-resistant seating, in particular aircraft seats, which consist of at least a soft, supporting material and a cover, between which there is a fire-resistant intermediate layer, which is a combustion of a layer of fiberglass fabric, which is firmly attached to the soft supporting material, and a layer of polyurethane foam, which has been rendered fire-resistant and is firmly attached both to the layer of fiberglass fabric and to the cover.

Fire-resistant seating, in particular aircraft seats

A flexible highly elastical polyurethane foam having a density ranging between 25 and 150 kg/m.sup.3 and a relatively high fire resistance obtained by the reaction of an isocyanate and/or a chemically modified derivate thereof with a highly molecular reactive polyol in presence of a catalytic agent, of a cross-linker, and/or an extender, of water as blast means and of a fire retardant, characterized in that said fire retardant comprises at least one of the following components: (1) linear urea-formol oligomer mixture having the general formula NH.sub.2 --CO--NH--[CH.sub.2 --NH--CO--NH].sub.n --CH.sub.2 --NH--CO--NH.sub.2, wherein n can have the value from 0 to 50; (2) urea in powdered form of which the particles are at least partially recovered by a less soluble film, as well as sulfur as of a resin; (3) dicyandiamide having the general formula: ##STR1##

Flexible polyurethane foam having a high fire resistance

The present invention relates to a fire-resistant intermediate layer for covering articles of seating furniture that consist of at least a soft supporting material and a fire-resistant covering, and which fire-resistant intermediate layer comprises a combination of a layer (a) of polyurethane foam plastic rendered fire-resistant, which rests on the soft supporting material, and (b) a glass fabric which is situated on the layer of polyurethane foam plastic rendered fire-resistant.

Fire-resistant intermediate layer for covering articles of seating

An improved process for preparing integral skin polyurethane, wherein a reaction mixture comprising polyol, polyisocyanate the NCO groups of which are not directly bonded to an aromatic group, no more than 0.5 part by weight of water to 100 parts by weight of polyol, and a catalyst is reacted in a mould, said improvement consisting in using as catalyst a synergistic combination of at least one organic initiator, comprising at least one functional group of primary or secondary amines, with at least one organic compound of bismuth.

Process for preparing integral skin polyurethane and polyurethane so

A hydrophile polyurethane foam prepared from a hydrophile polyol, a polyisocyanate in which NCO groups are not directly bonded to an aromatic ring, a surface active agent, a swelling agent and a catalyst comprising:

Hydrophile polyurethane foam, process for preparing said foam and

A process for preparing polyurethane with integral skin, wherein a composition comprising following ingredients: polyol, polyisocyanate, at most one part by weight of water to 100 parts by weight of polyol and catalyst, is reacted in a mould so that a polyurethane is formed, characterized in that one uses a polyisocyanate the NCO groups of which are not directly bonded to an aromatic group and, as catalyst, at least one of the following four synergistic combinations:

Process for preparing polyurethane with integral skin

A process for preparing polyurethane foam which consists in introducing in the reaction, between a polyisocyanate and a polyol, a catalyst containing the chemical structure &gt;N--C=N-- and also a compound selected from the group comprising metal salts of carboxylic acids having the structure ##STR1## M and metal alcoholates and/or phenolates having the structure M'OR', wherein M' represents an alkaline metal, M represents an alkaline or alkaline-earth metal, R represents hydrogen or an organic radical and R' represents an organic radical.

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Brakel, Belgium

Eddie R Du Prez