摘要:
Mixtures of fluorescent whitening agents consisting of 51 to 99% by weight of a symmetrically or unsymmetrically substituted first 1,4-bis(cyanostyryl)benzene and 49 to 1% by weight of an unsymmetrically substituted second 1,4-bis(cyanostyryl)benzene that differs from the first, a process for the preparation of said mixtures by condensing terephthalaldehyde with a di(C.sub.1 -C.sub.4) alkylphosphonomethylbenzonitrile to cyano-4-formylstilbene, which is further condensed, either direct or after isolation, with at least one other di(C.sub.1 -C.sub.4)alkylphosphonomethylbenzonitrile, the use of these mixtures for whitening polyester fibres, and compositions containing said mixtures for whitening polyester fibres.
摘要:
Stilbene derivatives of the formula ##STR1## wherein X is chlorine or bromine, R.sub.1 is hydrogen, carboxyl, cyano, C.sub.1 -C.sub.6 -alkyl or a non-chromophorically esterified carboxyl group, and R.sub.2 and R.sub.3 independently of one another are each hydrogen, unsubstituted or non-chromophorically substituted C.sub.1 -C.sub.6 -alkyl or C.sub.3 -C.sub.4 -alkenyl, or a non-chromophoric substituent of the 2nd order.They are valuable intermediates for producing optical brighteners of the 4,4'-disubstituted stilbene series.
摘要:
Novel diamines of the formula ##STR1## are described, in which R.sub.1 is C.sub.1-12 -alkyl, R.sub.2 is H or C.sub.1-12 -alkyl, R.sub.3 is C.sub.1-12 -alkyl, cycloalkyl having 4-12 ring C atoms, C.sub.7-8 -aralkyl, substituted or unsubstituted aryl or, if R.sub.4 =H, is also --CH.dbd.CH--alkyl or --C(alkyl).dbd.CH-- alkyl each having 1-4 C atoms in the alkyl groups, and R.sub.4 is H, C.sub.1-12 -alkyl, cycloalkyl having 4-12 ring C atoms, C.sub.7-8 -aralkyl or substituted or unsubstituted aryl, or R.sub.1 and R.sub.2 and/or R.sub.3 and R.sub.4 together are C.sub.3-11 -alkylene. The diamines (I) are valuable intermediates and are suitable especially for the preparation of transparent crosslinkable polyamides.
摘要:
Novel substituted 11-amino-undeca-4,8-dienal and 11-amino-undecanal aldehyde-derivatives of the formulae Ia ##STR1## in which R.sub.1 to R.sub.6, Y and m are as defined in patent claim 1, and processes for their preparation are described. The compounds of the formulae Ia and Ib can be catalytically hydrogenated to novel 1,11-diaminoundecanes, which, in turn, can be used, for example, for the preparation of polycondensation products, in particular transparent polyamides, or as curing agents for epoxide resins.
摘要:
A new improved process for producing pyridinaldehydes and hydrazone derivatives thereof, for example, pyridinaldehyde-phenylhydrazones, is described. This comprises reacting an aminomethylpyridine with an aldehyde or a ketone to give a compound of the formula ##STR1## isomerizing the compound (III), in the presence of suitable catalysts, to a compound of the formula ##STR2## and converting the compound (V), in the presence of an acid and optionally in the presence of a hydrazine, into a pyridinaldehyde or a pyridinaldehyde-hydrazone. It is possible to produce by the process according to the invention pyridinaldehydes and pyridinaldehyde-hydrazones in a simple manner, under mild ecologically favorable conditions and in good to very good yields.
摘要:
There are described transparent polyamides, and processes for producing them, which polyamides consist of recurring structural elements of the formula I ##STR1## or of recurring structural elements of the formula II ##STR2## [carbonyl groups in the structural elements (II) bound in the 1,3- and/or 1,4-position to the benzene nucleus, R.sub.1 =C.sub.1-12 -alkyl, R.sub.2 =H, C.sub.1-12 -alkyl, R.sub.3 =C.sub.1-12 -alkyl, C.sub.4-12 -cycloalkyl, C.sub.7-8 -aralkyl, unsubstituted or substituted aryl, R.sub.4 =H, C.sub.1-12 -alkyl, C.sub.4-12 -cycloalkyl, C.sub.7-8 -aralkyl, or unsubstituted or substituted aryl, or R.sub.3 /R.sub.4 together=C.sub.3-11 -alkylene, R.sub.5 /R.sub.6 independently of one another=hydrogen or methyl, and R.sub.7 /R.sub.8 together=C.sub.3-11 -alkylene]. The polyamides according to the invention are suitable for producing transparent moulded articles of the widest variety, and are distinguished in particular by low water absorption, high stability to hydrolysis, and/or good dimensional stability under the action of moisture or humidity.
摘要翻译:描述了透明聚酰胺及其制备方法,该聚酰胺由式I的重复结构元素组成或式II的重复结构元素(II) 结构元素(II)中的羰基与1,3-环中的1,3-和/或1,4-位结合,R1 = C1-12烷基,R2 = H,C1-12 - 烷基,R3 = C 1-12烷基,C 4-12 - 环烷基,C 7-8 - 芳烷基,未取代或取代的芳基,R 4 = H,C 1-12 - 烷基,C 4-12 - 环烷基,C7-8-芳烷基或未取代或取代的芳基 ,或R 3 / R 4一起= C 3-11 - 亚烷基,R 5 / R 6彼此独立地为氢或甲基,并且R 7 / R 8一起为C 3-10亚烷基。 根据本发明的聚酰胺适用于生产最广泛品种的透明模塑制品,特别是在水分或湿度作用下,具有低吸水率,高水解稳定性和/或良好的尺寸稳定性。
摘要:
The present invention provides compounds having the formula: in which R is hydrogen, hydroxy, halogen, C1-C20-alkyl, C4-C12cycloalkyl, C2-C20alkenyl, C2-C20alkynyl, C1-C20-alkoxy, C4-C12cycloalkoxy, C2-C20alkenoxy, C2-C20alkynoxy or C7-C13aralkyl; R1 and R2, independently, are hydrogen, C1-C20alkyl, C4-C12cycloalkyl, C7-C13 aralkyl, —C(═O)—R4 (in which R4 is C1-C20alkyl, C2-C20alkyl interrupted by 1 to 6 oxygen atoms, hetero-substituted C1-C20alkyl, C4-C12cycloalkyl, C2-C20alkenyl, C2-C20alkynyl, C1-C20-alkoxy, C4-C12cycloalkoxy, C2-C20alkenoxy, C2-C20alkynoxy, C6-C12 aryl, C6-C12 aryloxy or C7-C13 aralkyl), or —C(═O)—NH—R1 in which R1 has its previous significance; and R3 is hydrogen, halogen, hydroxy, C1-C20alkyl, C4-C12cycloalkyl, C2-C20alkenyl, C2-C20alkynyl, C1-C20-alkoxy, C4-C12cycloalkoxy, C2-C20alkenoxy, C2-C20alkynoxy, phenyl, C7-C13 aralkyl or —N(R1)(R2) in which R1 and R2 have their previous significance, or R1 and R2 together form a C4-C12 membered ring. The new triphenyltriazine compounds have improved absorption spectrum characteristics and superior resistance to exposure to UV light, relative to known triphenyltriazine compounds.
摘要:
Novel compounds of formula I are described wherein E corresponds to the formula or to the formula and the radicals R1, R2, R11, R22, R′22, R′33 and R′33 are as defined in claim 1. Compounds of formula I are suitable for stabilizing organic material, especially plastics materials, surface-coatings, cosmetic preparations, sun protection agents or photographic material, against damage by light, oxygen and/or heat.
摘要翻译:描述了新的式I化合物,其中E对应于式或式,基团R 1,R 2,R 11, R 22,R 22,R 33和R 33如权利要求1中所定义。 式I化合物适用于稳定有机材料,特别是塑料材料,表面涂层,化妆品制剂,防晒剂或照相材料,以防止光,氧和/或热的损害。
摘要:
Biphenyl-substituted triazines of the formula which are notable for high thermal stability, are used as stabilizers for organic polymers to counter damage thereto caused by light, oxygen and heat, as light stabilizers for textile fiber materials and as sunscreens for the human skin.
摘要:
Biphenyl-substituted triazines of the formulae which are notable for high thermal stability, are used as stabilizers for organic polymers to counter damage thereto caused by light, oxygen and heat, as light stabilizers for textile fiber materials and as sunscreens for the human skin.