Abstract: A good layer adhesion can be achieved in a composite having two or more layers wherein a layer I is obtained from a molding composition which has the following components: a) from 0 to 80 parts by weight of a polyamide selected from the group consisting of PA6, PA66, PA6/66 and a mixture thereof; b) from 0.

Abstract: A metal-free, in particular tin-free, silane-terminated polyurethane which is useful in adhesives or sealant compositions is obtained by reacting at least one aliphatic secondary aminoalkylalkoxysilane of formula (Ia) R—NH—(CH2)3Si(R1)x(OR2)(3-X)  (Ia) or at least one aliphatic secondary aminoalkylalkoxysilane of formula (Ib) R—NH—CH2—CH(R1)—CH2—Si(R1)x(OR2)(3-X)  (Ib) wherein in the formulae (Ia) and (Ib), R is a linear or branched alkyl group having 1 to 18 C atoms, R1 is a methyl group, R2 is a methyl or ethyl group and x is 0 or 1, with a polyurethane prepolymer having at least one terminal isocyanate group in the absence of a metal catalyst.

Abstract: The present invention relates to polynucleotides corresponding to the rpoB gene and which encode the &bgr;-subunit of RNA polymerase B, methods of producing L-amino acids, and methods of screening for polynucleotides which encode proteins having activity of the &bgr;-subunit of RNA polymerase B.

Abstract: A microencapsulated adhesive component, comprising a cross-linking constituent microencapsulated with a silanized polybutadiene, wherein the reactive constituent has been first reacted in the melt with cross-linking, thereby resulting in a cross-linkable hot-melt adhesive component for coating and/or laminating surface formations.

Abstract: This invention relates to a rubber composition for extrusion and molding comprising 100 weight parts of ethylene/&agr;-olefin/non-conjugated polyene copolymer (A) composed of ethylene, &agr;-olefin having carbon atoms of 3-20 and non-conjugated polyene, and at least 30-300 weight parts of carbon black (B), and 1.0×10−5-5.0×10−3 mol of an alkoxysilane compound shown by the following formula (I): wherein, R is alkyl or alkoxy, R1 is alkyl or phenyl, n is 0, 1 or 2, R2 is a bivalent hydrocarbon, R3 is arylene group, m and p are 0 or 1 respectively, and m and p are not 0 at a same time, q is 1 or 2, and D is —SCN or —SH when q is 1, and —Sx— when q is 2 (wherein x is an integer of 2-8).

Abstract: A molding composition which is composed of at least 60% by weight of transparent polyamide, where the molding composition comprises an effective amount of one or more optical brighteners, and where the amount of the optical brightener has been judged in such a way that

Abstract: A process for the continuous preparation of very highly concentrated hydrogen peroxide having a content of greater than 80 wt.%, especially over 98 wt.%, by suspension crystallization and after-treatment of the H2O2 crystals. The after-treatment takes the form of countercurrent washing in a hydraulic or mechanical washing column with a packed crystal bed. Hydrogen peroxide is disclosed having a concentration of from 99.9 to 100 wt.% and a content of TOC, nitrate, phosphate, nickel and tin of in each case less than 4 mg/l.

Abstract: A process for the production of modified carbon black, in which a carbon black dispersion containing carbon black, water and wetting agent, is mixed with an acid, aqueous solution or suspension of a primary amine and then reacted with sodium nitrite solution.

Abstract: The present invention provides a process for preparing a mixture, which mixture includes catenate and cyclic siloxanes of formula I R3Si—O—(SiR2—O—)mSiR3   (I) and cyclic siloxanes of formula II wherein m is an integer from 0 to 40 and n is an integer from 2 to 40, wherein R2 and R3 are each independently an organic functional group selected from the group including alkyl, aryl, vinyl, and alkoxy groups, and wherein there is not more than one vinyl group or aryl group per silicon atom, said process including a controlled hydrolysis, condensation or cocondensation reaction of at least one monomeric silane in alcoholic solution in the presence of an acidic catalyst, which reaction includes contacting alcohol, water, and at least one chlorosilane component selected from the group including (i), (ii), (iii): (i) at least one arylchlorosilane; (ii) at least one admixture selected from the group including alkylchlorosilane and arylchlorosilane, arylchlorosi

Abstract: Microporous titanium dioxide particles having a crystalline structure and having an apparent density of less than 1.9 g/cm3.

Abstract: This invention relates to the mutually compatible plasmids pTET3 and pCRY4, isolated from the strain of Corynebacterium glutamicum deposited under DSM number 5616, wherein plasmid pTET3 is characterised by 1.1 a length of ˜27.8 kbp and the restriction map shown in FIG. 1, 1.2 a replication region comprising the nucleotide sequence shown in SEQ ID no. 1 and 1.3 an antibiotic resistance region consisting of a tetA gene imparting tetracycline resistance and an aadA gene imparting streptomycin and spectinomycin resistance, shown in SEQ ID no. 6, and plasmid pCRY4 is characterised by 1.4 a length of ˜48 kbp and the restriction map shown in FIG. 2 and 1.5 a replication region comprising the nucleotide sequence shown in SEQ ID no. 4 to composite plasmid vectors of these plasmids which are capable of autonomous replication in coryneform bacteria and to processes for the production of L-amino acids, vitamins and nucleotides using these bacteria.

Abstract: The invention provides nucleotide sequences from Coryneform bacteria which code for the RodA protein and a process for the fermentative preparation of amino acids using bacteria in which the rodA gene is enhanced.

Abstract: Iron oxide-silicon dioxide-titanium dioxide mixed oxide is produced by burning vaporizable compounds of iron, silicon and titanium together in a hydrogen/oxygen flame. The mixed oxides may be used as UV absorbers in cosmetics.

Abstract: Metal oxide particles having a metal oxide core and a silicon dioxide coating have a low structure. The particle are produced by a base dissolved in water being added under agitation to a dispersion comprising a metal oxide, at least one compound of the type XnSi(OR)4−n, and water, the reaction product being separated out, optionally washed with water and dried. The metal oxide particles coated with silicon dioxide may be used in sun screening agents and in chemical-mechanical-polishing (CMP) applications.

Abstract: The invention relates to polynucleotides that contain polynucleotide sequences coding for the genes sucC and sucD, selected from the group

Abstract: The invention relates to a process for ketalizing triacetonamine by reacting triacetonamine and a hydroxyl derivative, for example, a mono- or polyhydric alcohol, with gaseous hydrogen chloride to give an open-chain or cyclic ketal.

Abstract: A siloxane mixture where the siloxanes carry aminoalkyl and alkoxy groups and, where appropriate, hydrocarbon groups and also where appropriate, hydroxyl groups.

Abstract: The present invention relates to a process for the surface-immobilization of antimicrobial polymers, where the surface-immobilization of the antimicrobial polymers takes place by metal deposition, and also to a metal coating having antimicrobial properties.

Abstract: A mixture of organoalkoxysiloxanes of formula I: wherein R and R″ are identical or different and are methyl, ethyl, vinyl, n-propyl, i-propyl, &ggr;-chloropropyl, n-butyl, i-butyl, n-pentyl, i-pentyl, n-hexyl, i-hexyl, n-heptyl, i-heptyl, n-octyl, i-octyl, hexadecyl, octadecyl or alkoxy, R′ represents methyl or ethyl, n and m are identical or different and each is 0 or an integer ranging from 1 to 20, on the condition that (n+m)≧2, is prepared by: reacting in a first stage the constituents of (i) an organotrichlorosilane or a mixture of organotrichlorosilanes or a mixture of at least one organotrichlorosilane and tetrachlorosilane, (ii) water and (iii) alcohol, combined in a molar ratio (i):(ii):(iii) of 1:(0.59 to 0.95):(0.5 to 100), at a temperature of 0 to 150° C.

Abstract: The invention relates to the use of the N-acetyl amino acid racemase from Amycolatopsis orientalis subspecies lurida for the racemiszation of N-carbamoyl amino acids. This use permits the 100% preparation of optically pure amino acids starting from racemic hydantoins in an enzymatic overall process.