摘要:
Compositions comprising polyurethane dispersions and water-reducible resins particularly suited for use as basecoats in low VOC basecoat/clearcoat vehicle coatings.
摘要:
The invention is directed to a stable phenolic dispersion of hydrophilic phenolic resin polymer using polyvinyl alcohol as protective colloid. Incorporation of a small proportion of an etherified bisphenol-A resin into an aqueous solution of a phenolic resin and a protective colloid (e.g., polyvinyl alcohol) forms a stable dispersion with low volatile organics content.
摘要:
A thermosetting resin composition (a) comprising 60 to 97 % by weight of a thermosetting resin containing dihydrobenzoxazine rings and 3 to 40 % by weight of a novolac phenolic resin and a thermosetting resin composition (b) comprising 5 to 30 % by weight of the thermosetting resin and 70 to 95 % by weight of a novoiac phenolic resin are cured fast, and the cured products thereof are excellent in mechanical properties and non-flammability.
摘要:
The present invention provides mixture of at least two novolak resins with a molecular weight distribution overlap of at least 50 % and having dissolution rates which differ by a factor of at least 2.0. A method is also provided for producing such novolak resin mixtures.
摘要:
A flame retarding resin composition comprising 100 parts by weight of a specific rubber-reinforced resin, 1-200 parts by weight of a phenol resin, 1-200 parts by weight of an organic phosphorus compound, 1-50 parts by weight of a nitrogen-containing compound, 0-40 parts by weight of an oligomer-type polymer containing a functional group, 0-30 parts by weight of a metal compound, a silicon compound, and/or polytetrafluoroethylene, and 0-300 parts by weight of a styrene-type resin. The composition has high impact resistance, excellent heat resistance, and a superior self-fire-extinguishing characteristic.
摘要:
The invention provides injection-molding thermosetting resin compositions obtained by adding a fluidity modifier, which is selected from the group consisting of melamine compounds, benzoguanamine compounds and urea compounds, to a phenolic resin, hexamethylenetetramine, a filler and an additive. These resin compositions excellent thermal stability in a cylinder and curing property in a mold and can provide molded articles having superb mechanical strength.
摘要:
Gegenstand der Erfindung sind Polyimidformmassen bzw. Formmassen von Polyimid-Mischungen mit verbesserter thermoplastischer Verarbeitbarkeit und verbesserter Formbeständigkeit bei feuchter Lagerung, die 0,1 bis 40 Gew.-%, vorzugsweise 1 bis 20 Gew.-%, spezielle phenolische Verbindungen enthalten.
摘要:
Die vorliegende Erfindung betrifft ein Verfahren zur Herstellung von wäßrigen Aminoharz-Lösungen für formaldehydarme Flächenverleimungen auf Basis von Kondensationsprodukten aus Melamin, Harnstoff, Formaldehyd und einem Phenol-Formaldehyd-Alkalisulfit-Kondensationsprodukt mit einem Molverhältnis von 1,4 bis 1,8 mol Formaldehyd, 0,04 bis 0,1 mol Melamin, 0,015 bis 0,04 mol Phenol und 0,002 bis 0,005 mol Alkalisulfit oder Alkalihydrogensulfit sowie gegebenenfalls 0,02 bis 0,04 mol eines 1- oder 2-wertigen Alkohols pro mol Harnstoff, bezogen auf die Gesamtmenge des Aminoharzes, die wäßrige Aminoharz-Lösung selbst sowie deren Anwendung.
摘要:
A composition for use in manufacturing fire and heat resistant components, typically by moulding, comprises a mixture of foamed filler, a liquid binder and one or more frits. The composition may itself be moulded to form such components or may be included in other moulding systems to impart fire and heat resistant properties to a moulding.