摘要:
The invention relates to a method for modifying isocyanates, wherein at least one organic monomer isocyanate having an NCO functionality >1 is oligomerised in the presence of at least one catalyst, said method being characterised in that the catalyst comprises at least one specific compound having an NPN sequence selected from compounds of formula I (formula I), and/or from compounds of formula II (formula II) where HX represents an acid with a pKa value ≥ 2, X – represents the anion of an acid with a pKa value ≥ 2, and n represents an integer or fractional number between 0 and 20, wherein Y represents R 12 (R 13 )N- and/or one or more substituents of the structure of formula III (formula III) and wherein R 1 to R 19 independently represent identical or different substituents selected from C 1 -C 20 alkyl-, C 1 -C 20 cycloalkyl- and C 6 -C 20 aryl groups, or wherein R 1 and R 2 , R 3 and R 4 , R 5 and R 6 , R 7 and R 8 , R 9 and R 10 , R 12 and R 13 , R 14 and R 15 , R 16 and R 17 , R 18 and R 19 independently represent identical or different substituents selected from C 1 -C 20 alkylene-, C 1 -C 20 cycloalkylene-, C 6 -C 20 arylene groups, and can form a 3- to 12-membered ring with the N atom joined to the P atom. The invention also relates to the use of a catalyst of this type.
摘要:
Die Erfindung betrifft ein neues Verfahren zur Herstellung aliphatischer Polyisocyanate mit Iminooxadiazindionstrukturen.
摘要翻译:含有聚异氰酸酯的亚氨基恶二嗪二酮基(A)的制备包括在阴离子(I)的存在下多异氰酸酯的反应。 含有聚异氰酸酯的亚氨基恶二嗪二酮基(A)的制备包括在式((R-f)n-CR-a(3-n)-C(O)O-)的阴离子存在下多异氰酸酯的反应。 R-f =氟化的1-30C环状残基(不饱和的); R a = 1-20 C烷基,芳基(任选地含有杂原子取代基)或H; n = 1-2。 还包括使用(I)作为异氰酸酯(NCO)基团的低聚反应中的催化剂的独立权利要求。
摘要:
The invention is related to a process for producing epoxy-group terminated and isocyanurate-group containing polyoxazolidinones comprising reacting at least one monomeric polyisocyanate compound (A) with at least one polyepoxide compound (B) in the presence of at least one catalyst (C), at a molar ratio of the epoxy groups of the at least one polyepoxide compound (B) to the isocyanate groups of the at least one monomeric polyisocyanate compound (A) of ≥ 2:1 to ≤ 25:1, wherein the at least one monomeric polyisocyanate compound (A) is added to the at least one polyepoxide compound (B) over a period of ≥ 1 minute to ≤ 50 minutes at a reaction temperature (TR) of ≥ 105°C to ≤ 160° C. The invention is also related to the resulting epoxy-group terminated and isocyanurate-group containing polyoxazolidinones, as well as to a composition at least comprising the resulting epoxy-group terminated and isocyanurate-group containing polyoxazolidinones and compounds having at least one group that is reactive towards terminal epoxy-groups, furthermore to the process for the preparation of said composition, the use of this composition as or in a coating formulation, to a coating formulation comprising at least this composition, to a process for coating a substrate comprising the step of applying of this coating formulation onto the substrate, and to the correspondingly coated substrate.
摘要:
The invention relates to coating agent compositions, containing: a) at least one component (A) containing polyhydroxyl groups, b) at least one component (B) having on average at least one isocyanate group and on average at least one hydrolysable silane group of formula (I): -NR-(X-SiR''x(OR')3-x) and/or at least one hydrolysable silane group of formula (II): -N(X-SiR''x(OR')3-x)n(X'-SiR''y(OR')3-y)m, c) at least one catalyst (D) containing phosphorous and nitrogen, for crosslinking silane groups, and d) at least one catalyst (Z) for reacting hydroxyl groups with the isocyanate groups, characterised in that i) the catalyst (Z) is selected from the group consisting of zinc and bismuth carboxylates, aluminium, zirconium, titanium and/or boron chelates and/or inorganic catalysts containing tin, and mixtures thereof, and ii) the coating agent composition contains at least one reaction accelerator (R) selected from the group consisting of inorganic acids and/or organic acids and/or partial esters of the inorganic acids and/or partial esters of the organic acids. The invention also relates to methods for producing multi-layered paintwork using the coating agent compositions, to the coatings obtainable using the method, and to the use of same.
摘要:
Die vorliegende Erfindung betrifft ein neues Verfahren zur Herstellung von insbesondere in Lösungsmitteln farbdriftstabilen, Isocyanuratgruppen aufweisenden Polyisocyanaten von (cyclo)aliphatischen Diisocyanaten.
摘要:
Verbesserte Kunststoff-Formteile werden erhalten, indem man Epoxy-Isocyanat-Reaktionsharzgemische unter Druck und erhöhten Temperaturen in eine Form überführt und in der Form unter dem durch die flüssige Gießharzmasse übertragenen Druck bis zur Verfestigung beläßt.
摘要:
Die vorliegende Erfindung betrifft ein Verfahren zur Herstellung von Kunststoffen unter Verwendung von substituierten Triamino(imino)phosphoranen als Katalysatoren. Sie können als Ersatz oder in Kombination mit an sich bekannten urethankatalystoren z.B. zur Herstellung von starren oder flexiblen polyurethanschäumen sowie zahlreichen anderen polyurethan-Produkten eingesetzt werden. Die Erfindung betrifft weiterhin neue Triamino(amino)phosphorane.