摘要:
Process for preparing carboxylic acid chlorides by reaction of carboxylic acids or carboxylic anhydrides with phosgene at temperatures of from 0.degree. to 180.degree.C in the presence of a catalyst, wherein 0.01 to 10 weight percent, calculated on the carboxylic acid or the carboxylic anhydride, of trisubstituted phosphine oxides or trisubstituted phosphine sulfides or reaction products of these compounds with phosgene and/or acids or acid anhydrides or mixtures of these compounds are used as catalyst.
摘要:
Ceramic green films having advantageous isotropic distribution of the inorganic pigment can be obtained by casting and drying a slip containing finely divided inorganic pigment, organic solvents, polyvinylbutyral, plasticizer and dispersing agent if compounds which contain in their molecules at least one structural unit of the formula Z ##STR1## in which A and B, which must be different, stand for either the oxyalkylene unit --C.sub.3-4 H.sub.6-8 O-- or the oxyalkylene unit --C.sub.2 H.sub.4 O-- and x and y, which can be identical or different, each denote a number from 1 to 200, are used as dispersing agents.Ceramic green films produced according to the invention can be converted to isotropic ceramic substrates by subsequent heat treatment and sintering.
摘要翻译:具有有机无机颜料的各向同性分布的陶瓷绿膜可以通过将含有细碎无机颜料,有机溶剂,聚乙烯醇缩丁醛,增塑剂和分散剂的滑爽液浇铸和干燥来获得,如果化合物在其分子中含有至少一个式 Z (Z)其中A和B必须不同,代表氧化烯单元-C3-4H6-8O-或氧化烯单元-C2H4O-,x和y可以相同或不同, 各自表示1〜200的数,用作分散剂。 通过随后的热处理和烧结,可以将根据本发明生产的陶瓷绿膜转化为各向同性的陶瓷衬底。
摘要:
A process for the preparation of organophosphorus derivatives of 2,4-di-tert-butylphenol with a high proportion of organophosphorus derivatives of biphenyl, which comprises reacting, in a first step, a 4,4'-dihalobiphenyl whose halogen has an atomic weight of at least 35, under Grignard conditions with magnesium to form the corresponding Grignard compound and this is further reacted in a second step with bis(2,4-di-tert-butylphenyl) chlorophosphite with the formation of a mixture in which at least 50% by weight of the phosphorus is combined in the form of tetrakis(2,4-di-tert-butylphenyl) 4,4'-biphenylenediphosphonite. The invention further relates to a polyolefin molding composition containing tetrakis(2,4-di-tert-butylphenyl) 4,4'-biphenylenediphosphonite which was prepared by reaction of a 4,4'-dihalobiphenyl whose halogen has an atomic weight of at least 35 with magnesium to form the Grignard compound and by subsequent reaction with bis(2,4-di-tert-butylphenyl) chlorophosphite. The invention furthermore relates to a process for the preparation of 4,4'-dihalomagnesium compounds of biphenyl by reacting a 4,4'-dihalobiphenyl whose halogen has an atomic weight of at least 35 in the absence of an entrainer, with fine-particle magnesium which is held in suspension.
摘要:
Compound of the formula ##STR1## in which n denotes a number from 4 to 12, preferably 6 to 8, R.sub.1 denotes hydrogen or methyl, preferably hydrogen, R.sub.2 and R.sub.3 denote C.sub.1 -C.sub.6 -alkyl, preferably propyl or butyl, and X denotes halogen, HSO.sub.4 or anions of organic acids having 1 to 4 carbon atoms, or CH.sub.3 OSO.sub.3, and preferably denotes chlorine.These compounds are used on their own or together with non-ionic surfactants as an emulsifier for the production of aqueous polymer dispersions of fluorine-containing acrylic acid esters. Polymer dispersions of this type, formed from fluorine-containing acrylic acid esters, are used for imparting an oleophobic and hydrophobic finish to textile materials.
摘要翻译:式中,n表示4〜12,优选6〜8的数,R1表示氢或甲基,优选为氢,R2和R3表示C1-C6-烷基,优选丙基或丁基,X表示 卤素,HSO4或具有1至4个碳原子的有机酸的阴离子,或CH 3 OSO 3,并且优选表示氯。 这些化合物本身或与非离子表面活性剂一起用作乳化剂,用于生产含氟丙烯酸酯的聚合物水分散体。 这种由含氟丙烯酸酯形成的聚合物分散体用于赋予纺织材料疏油和疏水的表面光洁度。
摘要:
Copolymers of(A) perfluoroalkylethyl acrylate C.sub.n F.sub.2n+1 CH.sub.2 CH.sub.2 OCOCH.dbd.CH.sub.2(b) higher alkyl acrylate C.sub.m H.sub.2m+1 OCOCH.dbd.CH.sub.2(c) vinylidene chloride CH.sub.2 .dbd.CCl.sub.2(D) acroylbutylurethane CH.sub.2 .dbd.CH--CONHCOOC.sub.4 H.sub.9 at the weight ratio of 1(A) : 0.22-0.39(B) : 0.45-0.85(C) : 0.01-0.15(D) n being 6, 8, 10, 12 or 14 and m being a number from 10 to 16.They are prepared by conventional methods for preparing copolymers and are used as oil - and water repellents for porous materials, especially textile materials.
摘要:
A 3-component lacquer composed of A) compounds containing at least two R.sup.1 R.sup.2 C.dbd.CR.sup.3 --X groups (I) wherein R.sup.1 denotes hydrogen or a hydrocarbon radical having 1 to 10 carbon atoms, R.sup.2 and R.sup.3 are individually hydrogen, a hydrocarbon radical having 1 to 10 carbon atoms, an ester group containing the radical R.sup.4 of a monohydric alcohol having up to 12 carbon atoms, --CN, --NO.sub.2 or a --CO--NHR.sup.1 or --CO--R.sup.1 group, X is --CO-- which is attached to a further R.sup.1 R.sup.2 C.dbd.CR.sup.3 -- group either directly or via the radical of a polyhydric alcohol or of an amine and B) compounds containing:(a) at least two active H atoms or(b) at least two groups having active H atoms of the type --AH (II) or(c) at least one active H atom and at least one group of the type (II)and A is --CH-- or --NH-- or --S-- and optionally with customary additives and C) at least one catalyst selected from the group consisting of diazabicyclooctane (DABCO), fluorides of quaternary ammonium compounds on their own or as a mixture with alkyl silicates, amidines, tertiary phosphanes of the formula P(CH.sub.2 --Y).sub.3 in which the Ys are identical or different and are --OH, --CH.sub.2 CN or --N(Z).sub.2 in which Z is an alkyl having 1 to 5 carbon atoms, tertiary phosphanes of the formula P(R.sup.4,R.sup.5,R.sup.6) in which R.sup.4, R.sup.5 and R.sup.6 are alkyl of 1 to 12 carbon atoms or a phenyl which is unsubstituted or substituted by at least one alkyl, alkoxy or dialkylamino, each of which has 1 to 4 carbon atoms in the alkyl, and R.sup.4, R.sup.5 and R.sup.6 are identical or different, but at least one of them is phenyl, and aminophosphoranes of the formula (R.sup.7,R.sup.8,R.sup.9) P.dbd.N--C (R.sup.10, R.sup.11,R.sup.12) in which R.sup.7, R.sup.8 and R.sup.9 are identical or different and denote an alkyl having 1 to 12 carbon atoms or a alkoxy or dialkylamino group, each of which has 1 to 4 carbon atoms in the alkyl, and R.sup.10, R.sup.11 and R.sup.12 are identical or different and each represents an alkyl having 1 to 5 carbon atoms or a phenyl.
摘要:
A reaction product of (A) compounds containing at least two R.sup.1 R.sup.2; C.dbd.CR.sup.3 --X groups (I) with (B) compounds which contain(a) at least two active H atoms or(b) at least two groups containing active H atoms of the type --AH-- (II) or(c) at least one active H atom and at least one group of the type (III),or which form the corresponding amount of this group (II), in which, the formula (I),X denotes --CO-- which is attached to a further R.sup.1 R.sup.2 C.dbd.CR.sup.3 group either directly or via the radical of a polyhydric alcohol or of an amine,R.sup.1 denotes hydrogen or a hydrocarbon radical having 1 to 10, preferably 1 to 4, carbon atoms, such as alkyl, phenyl, benzyl or naphthyl,R.sup.2 denotes hydrogen, a hydrocarbon radical having 1 to 10, preferably 1 to 4, carbon atoms, such as alkyl, phenyl, benzyl or naphthyl, an ester group containing the radical R.sup.4 of a monohydric alcohol having up to 12 carbon atoms, --CN, --NO.sub.2 or a CO--NHR.sup.1 or CO--R.sup.1 group, andR.sup.3 has the same meaning as R.sup.2 and is identical with or different from the latter, and in formula (II), --AH-- denotes one of the grouping --CH--, --NH-- and --SH, subject to the proviso that reaction products of (A) polyacrylates containing at least two free acrylic acid groups, reaction products of polyisocyanates with acrylic acid esters containing OH groups or reaction products of epoxy resins, with acrylic acid, with (B) diketene or acetoacetic acid esters of hydroxyethyl acrylate or methacrylate are excluded. In the reaction product, component (A) is a Michael acceptor and component (B) is a Michael donor. The product of the invention has the advantage that it is prepared from components which contain no toxic constituents and can therefore be used without special precautionary measures.
摘要:
Compound of the formula ##STR1## in which n denotes a number from 4 to 12, preferably 6 to 8, R.sub.1 denotes hydrogen or methyl, preferably hydrogen, R.sub.2 and R.sub.3 denote C.sub.1 -C.sub.6 -alkyl, preferably propyl or butyl, and X denotes halogen, HSO.sub.4 or anions of organic acids having 1 to 4 carbon atoms, or CH.sub.3 OSO.sub.3, and preferably denotes chlorine.These compounds are used on their own or together with non-ionic surfactants as an emulsifier for the production of aqueous polymer dispersions of fluorine-containing acrylic acid esters. Polymer dispersions of this type, formed from fluorine-containing acrylic acid esters, are used for imparting an oleophobic and hydrophobic finish to textile materials.
摘要翻译:式中,n表示4〜12,优选6〜8的数,R1表示氢或甲基,优选为氢,R2和R3表示C1-C6-烷基,优选丙基或丁基,X表示 卤素,HSO4或具有1至4个碳原子的有机酸的阴离子,或CH 3 OSO 3,并且优选表示氯。 这些化合物本身或与非离子表面活性剂一起用作乳化剂,用于生产含氟丙烯酸酯的聚合物水分散体。 这种由含氟丙烯酸酯形成的聚合物分散体用于赋予纺织材料疏油和疏水的表面光洁度。