摘要:
The present invention relates to a method for producing polyurethane foams by reacting an isocyanate component with an isocyanate-reactive component comprising at least one polyethercarbonate polyol, the reaction taking place in the presence of a component K selected from one or more compounds from the group consisting of K1 esters of mono- or polybasic carboxylic acids whose (first) dissociation has a pKa of 0.5 to 4.0, K2 mono-, di- and polysulfonates of mono- and polyfunctional alcohols, and K3 one or more compounds from the group consisting of K 3.1 esters of phosphoric acid, phosphonic acid, phosphorous acid, phosphinic acid, phosphonous acid and phosphinous acid, these esters each containing no P-OH group, K3.2 oligomeric alkyl phosphates of the general formula (II), where a is an integer from 1 to 10, b is an integer from 1 to 10, R1, R2, R3 and R4 are alkyl groups having at least one carbon, and R1, R2, R3 and R4 are alike or, independently of one another, different, and R5 is a linear alkylene group having at least two carbons or is a branched alkylene group having at least three carbons, and K3.3 comprises oligomeric alkyl phosphates of the general formula (III), where a is an integer from 1 to 10, b is an integer from 1 to 10, R1, R4 and R5 are linear alkylene groups having at least two carbons or are branched alkylene groups having at least three carbons, and R1, R4 and R5 are alike or, independently of one another, different, and R2 and R3 are alkyl groups having at least one carbon, and R2 and R3 are alike or, independently of one another, different. The invention also relates to polyurethane foams produced by the method of the invention and to the use thereof.
摘要:
[Problem] To provide a fluorine-containing phosphate ester-amide which has high flame retardancy such as exhibiting flame retardant effects at a small quantity of addition, and sufficient hydrolysis resistance. [Solution] A fluorine-containing phosphate ester-amide represented by general formula (1). (In the formula, R1 and R2 are the same or different and represent a branched or linear alkyl group having 1 to 20 carbon atoms in which at least one carbon bonded to a nitrogen atom is a secondary or tertiary carbon, wherein R1 and R2 may have a substituent group selected from the group consisting of an alkoxy group, a hydroxy group, an amino group, a methyl amino group, an ethyl amino group, a dimethyl amino group, diethyl amino group and a fluorine atom. In addition, R1 and R2 may be bonded together to form a five- to eight-membered cyclic structure. X and Y are the same or different and represent a hydrogen atom or a fluorine atom, and n and m represent an integer of 1 to 6.)
摘要:
Die vorliegende Erfindung betrifft Schotterkörper und ein Verfahren zur Herstellung von Schotterkörpern im Gleis- und Straßenbau und Deichbau, die eine hohe Stabilität und lange Nutzungsdauer aufweisen, aus Schottersteinen und Polyurethanschaumstoffen auf Basis eines Reaktionsgemisches mit ausgewählten Polyisocyanaten und Polyethercarbonat-Polyolen.
摘要:
A backsheet (1) for a photovoltaic module (5) comprising a support (10) and a weather resistant layer (13), the weather resistant layer comprising a binder containing a crosslinkable group, an isocyanate crosslinking agent and a catalyst capable of improving the crosslinking of the binder, characterized in that the catalyst is a zinc or bismuth based catalyst.
摘要:
Melamine-polyol dispersions comprising ethoxylated alcohols of specific structures are disclosed. Such dispersions maintain their stability under stationary conditions for at least 24 hours and are useful in the manufacturing of polyurethane foams. The resulted polyurethane foams display more evenly-distributed flame retardant properties.
摘要:
Ein Verfahren zur Herstellung von Zinnverbindungen durch Reaktion von elementarem Zinn mit einer Hydroxylgruppen umfassenden Verbindung.
Das Verfahren ist gekennzeichnet durch die Gegenwart eines Sauerstoff umfassenden Additivs, welches eine Dielektrizitätskonstante bei ≥ 20 °C bis ≤ 30 °C von ≥ 5 aufweist. Das Additiv ist von der Hydroxylgruppen umfassenden Verbindung verschieden; Bevorzugte Additive sind polar-aprotische Lösungsmittelmoleküle wie DMSO, DMF oder Sulfolan, Amin-N-Oxide und/oder Pyridin-N-Oxid. Ebenfalls beansprucht werden Verbindungen der folgenden Formel:
Besonders bevorzugte Produkte des Verfahrens sind Verbindungen der folgenden Formel:
摘要:
The invention relates to new catalysts and production thereof as well as the preferred use thereof in the production of polyisocyanate polyaddition products.