摘要:
Semifinished products or leather are or is produced by a process in which pelts, pickled pelts or semifinished products are treated with a) at least one sheet silicate and b) at least one copolymer which is obtainable by copolymerization of at least one ethylenically unsaturated dicarboxylic anhydride (A), derived from at least one dicarboxylic acid of 4 to 8 carbon atoms, at least one vinylaromatic compound (B1) or at least one oligomer (B2) of branched or straight-chain C2-C10-alkene, at least one oligomer having an average molecular weight Mn of from 300 to 5 000 g/mol or being obtainable by oligomerization of at least 3 equivalents of C2-C10-alkene, and optionally at least one ethylenically unsaturated monomer (C) differing from (A) and having at least one hetero atom, and reaction with at least one compound (D) of the formula I a or I b and optionally hydrolysis with water or aqueous alkaline solution, where, in formula I a and I b, A1 are identical or different and are C2-C6-alkylene R1 is linear or branched C1-C20-alkyl and n is an integer from 1 to 200.
摘要翻译:半成品或皮革是通过以下工艺生产的:其中用a)至少一种片状硅酸盐处理毛皮,腌制的毛皮或半成品,和b)至少一种共聚物,其可通过至少一种烯键式不饱和二羧酸酐 (A),衍生自至少一个4至8个碳原子的二羧酸,至少一种乙烯基芳族化合物(B1)或至少一种支链或直链C 2 - C 10 - 亚烷基,至少一种平均分子量为N 3〜5 000g / mol的低聚物或可通过将至少3当量的 C 2 -C 10 - 烯烃,以及任选至少一种不同于(A)并且具有至少一个杂原子的烯属不饱和单体(C),并且与 至少一种式I a或I b的化合物(D),并且任选地用水或碱性水溶液水解,其中在式I中a a d I b,A 1相同或不同,为C 2 -C 6 - 亚烷基,R 1为 直链或支链C 1 -C 20 - 烷基,n为1至200的整数。
摘要:
A process for preparing copolymers which comprises copolymerizing (A) at least one ethylenically unsaturated dicarboxylic anhydride derived from at least one dicarboxylic acid having 4 to 8 carbon atoms, (B) at least one vinylaromatic compound, and (C) optionally at least one non-(A) ethylenically unsaturated comonomer containing at least one heteroatom, (D) reacting the copolymer with at least one compound of the formula I a or I b where A1 is C2-C20 alkylene, identical or different, R1 is C1-C30 alkyl, linear or branched, and n is an integer from 1 to 200, hydrolyzing the product with water or an aqueous alkaline solution, and subsequent to hydrolysis adding further free-radical initiator.
摘要:
α-Chloroisopropyl-substituted aromatics are obtained in high yield by treating isopropenyl-substituted aromatics with hydrogen chloride gas in the absence of a solvent. The α-chloroisopropyl-substituted aromatics serve as initiators for the cationic polymerization of isobutene.
摘要:
The invention relates to amphiphilic compounds and mixtures thereof and processes for their preparation and their use in oil-in-water emulsions. The compounds are composed of a lipophilic and a hydrophilic part. The two parts are linked to one another by a linker derived from succinic acid. The lipophilic part is formed by a polyisobutylene group having a number average molecular weight Mn of from 300 to 10 000. The hydrophilic part preferably comprises at least two polyethylene glycol chains which can be prepared by reacting —OH, —N(H)— and/or —NH2 with ethylene oxide. A globular, nonlinear structure of the hydrophilic part is thus obtained, so that the hydrophilic character of the novel compounds predominate and said compounds are particularly suitable for oil-in-water emulsions. The invention additionally relates to formulations for treating metal surfaces, especially for corrosion protection, comprising at least one compound of the invention, at least one solvent capable of dissolving, dispersing, suspending or emulsifying the compound/s of the invention, and, if desired, further components. The process is for treating metal surfaces by contacting them with the formulation of the invention, and also coated metal surfaces themselves, are likewise provided by the present invention.
摘要翻译:本发明涉及两亲性化合物及其混合物及其制备方法及其在水包油乳液中的应用。 该化合物由亲油部分和亲水部分组成。 这两个部分通过衍生自琥珀酸的连接体彼此连接。 亲油部分由数均分子量M N n N 3的聚异丁烯基组成为300至10000.亲水部分优选包含至少两个聚乙二醇链,其可以通过使-OH ,-N(H) - 和/或-NH 2 - 与环氧乙烷反应。 因此获得亲水部分的球状非线性结构,使得新化合物的亲水特性占优势,所述化合物特别适用于水包油乳液。 本发明还涉及用于处理金属表面,特别是用于防腐蚀的制剂,其包含至少一种本发明化合物,至少一种能够溶解,分散,悬浮或乳化本发明化合物的溶剂,以及如果需要 ,其他组件。 该方法是通过使它们与本发明的制剂接触并且也涂覆的金属表面本身来处理金属表面,同样由本发明提供。
摘要:
In catalyst systems of the Ziegler-Natta type modified during their preparation and comprising as active constituentsa) a titanium-containing solid component which is obtained by reacting a compound of titanium with a compound of magnesium, a halogen, an inorganic oxide as support, a C.sub.1 -C.sub.8 -alkanol and a carboxylic ester as electron donor compound,and also as cocatalystb) an aluminum compound andc) if desired, a further electron donor compound,the titanium-containing solid component a) is prepared by first, in a first stage, admixing an inorganic oxide as support with a solution of a chlorine-free compound of magnesium in an inert solvent, stirring this mixture for from 0.5 to 5 hours at from 10 to 120.degree. C. and subsequently reacting it while stirring continually in an inert solvent with a C.sub.1 -C.sub.8 -alkanol in an at least 1.3-fold excess, based on the compound of magnesium, to give a chlorine-free intermediate, then, without purification or extraction of the intermediate, adding a compound of trivalent or tetravalent titanium and a carboxylic ester as electron donor compound to this intermediate, stirring the resulting mixture for at least 30 minutes at from 20 to 130.degree. C., subsequently filtering off and washing the solid thus obtained and subsequently, in a second stage, extracting the solid obtained from the first stage in an inert solvent comprising at least 5% by weight of titanium tetrachloride and washing it with a liquid alkane.
摘要:
Process for the production of leather using products obtainable by reacting (A) at least one cyclic organic carbonate with (B) at least one compound having at least two nucleophilic groups per molecule, selected from sulfonic acid, hydroxyl, primary or secondary amino or mercapto groups.
摘要:
The present invention relates to the use of highly branched polymers or oligomeric compounds prepared by condensing melamine (derivatives) and/or urea (derivatives) with diamines or polyamines for reducing or preventing the corrosion of corrosion-threatened materials. The invention further relates to a method for reducing, retarding or preventing the corrosion of corrsion-threatened materials, in which the materials and/or the corrosive medium to which the materials are exposed are or is contacted with at least one of these highly branched polymers and/or oligomers, and to an anti-corrosion composition which comprises these highly branched polymers and/or oligomers and also an anticorrosion pigment.
摘要:
Process for the production of leather, wherein pelts, pickled pelts or semifinished products are treated with at least one copolymer (A) which is obtainable by copolymerization of the following comonomers: (a) at least one ethylenically unsaturated C3-C10-carboxylic acid or at least one ethylenically unsaturated C4-C10-dicarboxylic acid or its anhydride, (b) at least one (meth)acrylate of an α-branched C3-C10-alkanol, (c) at least one (meth)acrylate of a primary C4-C20-alkanol.
摘要:
The present invention relates to aqueous dispersions comprising (A) at least one (co)polymer of at least one branched or straight-chain C3-C10-alkene, (B) at least one emulsifies synthesized by (a) preparation of a (co)polymer of isobutene, the (co)polymer having at least one reactive group, (b) functionalization of the (co)polymer of at least one branched or straight-chain C3-C10-alkene, (c) incorporation of at least one hydrophilic unit.
摘要:
The present invention relates to copolymers prepared by copolymerization in at least two stages, wherein, in one stage (A) at least one (co)polymer is prepared from a monomer or a mixture of comonomers comprising (a1) from 80 to 100% by weight of at least one ethylenically unsaturated carboxylic acid, (a2) from 0 to 20% by weight of at least one C1-C22-alkyl ester of at least one ethylenically unsaturated carboxylic acid, (a3) from 0 to 10% by weight of at least one further ethylenically unsaturated compound, data in % by weight being based on the total amount of comonomers of the relevant stage, and the (co)polymer thus obtained is reacted in a subsequent stage (B) with a further comonomer or a further mixture of comonomers comprising (b1) from 0 to 30% by weight of at least one ethylenically unsaturated carboxylic acid, (b2) from 70 to 100% by weight of at least one C1-C22-alkyl ester of at least one ethylenically unsaturated carboxylic acid, (b3) from 0 to 10% by weight of at least one further ethylenically unsaturated compound, data in % by weight being based on the total amount of comonomers of the relevant further stage.