Abstract:
The invention relates to phosphacyclohexanes of general formulae I and II, wherein the following designations, among others, apply: R can represent hydrogen, C1-100-alkyl, C7-20-aralkyl, C7-20-alkaryl, and C6-12-aryl; R to R can independently represent hydrogen, C1-20-alkyl, C7-20-aralkyl, C7-20-alkaryl, and C6-12-aryl; W, W' can independently represent single bonds or bridges comprising 1 to 20 carbon atoms, which can form part of a cyclic or aromatic group and can be interrupted by heteroatoms. Said phosphacyclohexanes are used as ligands in transition metal complexes of transition metals belonging to groups VIII to X of the periodic table.
Abstract:
The invention relates to a method for producing linear polymers or styrene block-copolymers by anionic polymerisation, wherein the chain-breaking is carried out by an n-alkyl glycidyl ether or a dialkyl ketone.
Abstract:
A continuous anionic polymerisation or copolymerisation process of styrene or diene monomers with alkali metal alkyl as polymerisation initiator is carried out in the presence of a metal alkyl or aryl of an at least bivalent element as reaction speed regulator, preferably in non-isotherm conditions and without a back admixture in a pipe or pipe bundle reactor. A metal alkyl or aryl A of formula R M and a metal alkyl or aryl B of formula R nM in a molar ratio between B and A from 0.1:1 to 500:1 are used. In the formulas, M is Li, Na or K; R is hydrogen, C1-C20-alkyl or C6-C20-aryl or C7-C20-alkyl-substituted aryl; M is an n-valent element of groups 2a, 2b or 3a of the periodic table of elements; and R is hydrogen, halogen, C1-C20-alkyl or C6-C20-alkyl. Also disclosed is a special initiator for the anionic polymerisation which does not contain any Lewis bases. 00000
Abstract:
Disclosed are expandable styrene polymers (EPS) containing, in relation to the styrene polymer, a) 0.05 to 5 percent by weight of an organic bromine compound containing a minimum of 50 percent by weight of bromine as a flameproofing agent, b) 0.05 to 2 percent by weight of a flameproofing synergist, c) 1 to 5 percent by weight of a metallic salt as an acid collector. Also disclosed is a method for producing said expandable styrene polymers.
Abstract:
The invention relates to a method for producing di-organo alkaline-earth compounds by reacting an organometal RnM with an alkaline-earth salt M Xm.
Abstract translation:通过使金属有机基RnM 2与碱土金属M 1 X m反应来制备Erdalkalidiorganylverbindungen的方法。
Abstract:
PCT No. PCT/EP95/02072 Sec. 371 Date Dec. 16, 1996 Sec. 102(e) Date Dec. 16, 1996 PCT Filed May 31, 1995 PCT Pub. No. WO95/34586 PCT Pub. Date Dec. 21, 1995Thermoplastic molding compounds comprise as essential components A) from 10 to 100% by weight of copolymers of the monomers of the general formulae I and II I II where R1 is H or alkyl of 1-22 carbon atoms, R2 is H or alkyl of 1-22 carbon atoms, R3 is H or alkyl of 1-4 carbon atoms, a is 0, 1, 2, 3, 4 or 5, and b is 0, 1, 2, 3, 4 or 5, B) from 0 to 3000 ppm, based on the weight of component A, of compounds of the general formula I, C) from 0 to 500 ppm, based on the weight of component A, of compounds of the general formula II, D) from 0 to 90% by weight, based on the total weight of the molding compound, of polymers other than A), and E) from 0 to 50% by weight, based on the total weight of the molding compound, of additives and processing aids.
Abstract:
A vented wall, e.g. for animal sheds, has a number of horizontal slats on pivot mountings. In the fully closed position the slats have an staggered overlapping pattern. The fully open position has the slats horizontal. The slats have minimum thickness for maximum venting and are pre-assembled in a support frame for ease of fitting, and are made of wood, glass, metal, plastic or any other suitable material. They can be linked by control bars, tapes or chains for ganged control.
Abstract:
O.Z. 0050/41827 Hydrocarbons and polymers thereof, of the structure (I) R-C(CH3)2-CH2-C(CH3)2-CH2-CH=CH-CH2-C1 (I) where R is a hydrocarbon radical, are prepared by reacting corresponding starting materials which contain chlorine bonded to tertiary carbon, of the structure R-C(CH3)2-CH2-C(CH3)2-C1 (II) with from 1 to 10 moles of butadiene in the presence of a Friedel-Crafts catalyst in a solvent which is inert to the catalyst, and the hydrocarbons or polymers thereof can be reacted in a further step of the process with a compound from the group comprising ammonia, primary or secondary amine or polyamine, amino alcohol, amino ether, hydrazine or hydrazine which is substituted up to three times.
Abstract:
The device (2) is assembled of a stand (8) joined to the floor (10) of the byre, a hollow vertical bar (4), positioned on top of the stand (8) and the u-shaped metal bow (6). The lower horizontal segment (18) of the bow (6) has an inclined front area, forming an acute angle (26) with the upper horizontal segment (24). The vertical carrying bar (4) can be telescopically moved and locked at the required height. A transitional element (12, 20) between the stand (8) and the carrying bar (4) keeps the metal bow (6) at a distance from the floor (10).
Abstract:
Novel polymers which are suitable as binders are obtainable by reacting (A) a base resin which has an average molecular weight ?w of from 200 to 5,000 and contains on average from 1 to 3 epoxy or isocyanato groups as the reactive groups per molecule with (B) a mixture of (B1) 5 to 50% by weight of polyisobutylene which is terminated with primary amino groups and has an average molecular weight ?w of from 500 to 5,000 and (B2) 5-95% by weight of an amidoamine which carries primary amino groups and is obtainable by condensation of diprimary diamines of 2 to 20 carbon atoms with aliphatic C2-C44-dicarboxylic acids, the amounts being such that from 1 to 5 equivalents of primary amino groups of (B) are present per equivalent of reactive groups of (A).