摘要:
The use of an alkoxylated polytetrahydrofurane of formula wherein m, m', n, n', p, p' and k are integers in the range of ‰¥ 1, R 1 denotes an unsubstituted linear or branched alkyl radical, R 2 denotes -CH 2 -CH 3 , and R 3 denotes a hydrogen atom or -CH 3 , as an additive in a fuel for reducing fuel consumption in the operation of an internal combustion engine with this fuel.
摘要:
The present invention relates to the field of the protection of security documents, in particular banknotes, against premature detrimental influence of soil and/or moisture upon use and time. In particular, it relates radiation curable protective varnishes comprising one or more cationically curable compounds and one or more di-hydroxyl-terminated perfluoropolyether compounds of the general formula HO—(CH2CH2O)c—CH2—CF2O—(CF2—CF2O)a—(CF2O)b—CF2—CH2—(OCH2CH2)d—OH, wherein a and b independently are integers in a range between 0 and 50, wherein a+b≧1, and wherein c and d may be the same or different and are in the range of 1-20, and their uses for providing a protective coating or layer on a security document.
摘要:
Provided are processes for preparing polytrimethylene ether glycol monoester or diesters composition wherein polytrimethylene ether glycol containing less than about 1 weight% of unreacted diol monomer is reacted with an equivalent excess of a monocarboxylic acid.
摘要:
The present invention relates to a novel polyurethane, copolyether ester or copolyether amide elastomer composition comprising a glycol derived from random copolymerization of alkylene oxide and tetrahydrofuran (THF), the alkylene oxide having from 2 to 4 carbon atoms, i.e., poly(tetramethylene-co-alkyleneether) glycol.
摘要:
Es werden Polyether-Blockcopolymere der allgemeinen Struktur B-(A-OH) n beschrieben. Dabei ist n gleich oder größer als 2 und die Blöcke A bestehen aus Polyoxypropyleneinheiten und der zentrale Block B besteht aus Polyoxytetramethylen-, Polyoxyethylen-, Polybutadien-, Polyisopren-, Polyamid-, Polyurethan- oder Polyestereinheiten, wobei der zentrale Block B unter DMC-Katalyse, Katalyse durch ein oder mehrere Phosphacen- und/oder Porphyrin-Derivat(e) oder Alkalimetall-Katalyse propoxyliert wurde. Diese Polyether-Blockcopolymere eignen sich zur Herstellung von Zusammensetzungen, die als Basis für Zubereitungen zur Verwendung als einkomponentiger feuchtigkeitshärtender oder zweikomponentiger Kleb- oder Dichtstoff, zur Montageverklebung, zur flächigen Verklebung und/oder Beschichtung, als reaktiver Schmelzklebstoff oder als Kaschierklebstoff dienen.
摘要翻译:聚醚嵌段共聚物(I),是新的。 式(B1-(A-OH)n)(I)的聚醚嵌段共聚物是新的。 n => = 2; A:由聚氧丙烯单元制成的块; 和B1:由聚氧四亚甲基,聚氧乙烯,聚丁二烯,聚异戊二烯,聚丙烯酸酯,聚甲基丙烯酸酯,聚酰胺,聚氨酯或聚酯单元制成的中心嵌段。 还包括以下独立权利要求:(1)通过使至少一种(I)和至少一种包含至少一种与聚醚嵌段共聚物的结构A或B1重合的聚合物序列的组分反应获得的组合物; 和(2)包含至少一种组合物的制剂。
摘要:
The invention relates to a two-component curable substance comprising, after mixing the two components: a) at least one epoxy, b) at least one curing agent for the epoxy reacting at room temperature, c) particles having a core-shell structure, d) at least one aliphatic polyalkyl ether carrying an amino group at each end of the chain and different from component b), selected from homopolymers or copolymers of tetrahydrofuran carrying aliphatic amino end groups, and having a weight-averaged molar mass Mw of at least 1800 in respect of the polyethylene glycol standard; to the use of said mass as an adhesive, in particular as a structural adhesive, or as a structural foam. The cured mass is characterized by high impact resistance at low temperatures (temperatures in the range from -30°C to -40°C) when used as a structural adhesive.