Abstract: Novel polymethylpiperidine compounds of general formula (I) containing silane groups and effective as light stabilizers, heat stabilizers and oxidation stabilizers for organic materials.The meanings of R.sub.1, R.sub.2, R.sub.3, R.sub.4 and n are defined in the text.

Abstract: Substituted pyrroloanthracenes are prepared by reacting either furanoanthracenes or N-unsubstituted pyrroloanthracenes with appropriately substituted alkylamines. The compounds can be employed as active ingredients in medicaments, in particular as immunomodulators.

Abstract: A cyclic amidine typically having the formula: ##STR1## wherein R.sup.1 represents an organic radical, X represents a direct bond or a divalent organic radical and A and B each represent hydrogen or an organic radical is prepared by a liquid phase reaction of a nitrile of the formula R.sup.1 CN where R.sup.1 has the same meaning as above, with a polyamine typically having the formula: ##STR2## where X, A and B have the same meaning as above, in the presence presence of a mixture of a titanium compound with water.

Abstract: A method of treating surfaces in order to eliminate microbial growth by adding an antibacterially effective amount of an organosilicon quaternary ammonium silatrane compound to the surface in order to destroy bacteria and fungi. The preferred organosilicon quaternary ammonium silatrane compound has the formula ##STR1## wherein R.sup.1, R.sup.2, R.sup.3, and R.sup.4, each represent a hydrogen atom or a methyl, ethyl, propyl, or butyl radical.

Abstract: This invention provides a class of cyclic silylureas and a process of preparing them, which process comprises reacting a cyclosilazane with an isocyanate containing moiety; a class of cyclosilazanes and process for making them, which process comprises heating an aminoalkylalkoxysilane in the presence of a basic catalyst at a temperature less than 100.degree. C. at subatmospheric pressure; and aminoalkylalkoxysilanes and a process for making them, which process comprises reacting a nitrile and a vinylsilane while heating in the presence of a base selected from the group consisting (a) an alkali metal, (b) alkali metal alkoxide, (c) an alkali metal amide, (d) an alkali metal hydride and (e) mixtures thereof to form a reaction product which is subsequently hydrogenated.

Abstract: This invention has as its subject a basic organo-mineral proton conducting polymer, produced by copolymerization of three precursors:a precursor based upon a trialkoxysilane, onto which a methane sulphonamide group is grafted by means of an alkyl or aryl link,a "deprotonizing" precursor based upon a trialkoxysilane, onto which is grafted a group derived from a nitrogenous base, preferably an imidazoline group, by means of an alkyl or aryl link,a "plasticizing" and solvating precursor, having at least one urea group which is the product of a reaction between a primary mono-, di- or triamine D and a trialkoxysilane E onto which an isocyanate group has been grafted by means of an alkyl link.

Abstract: The present invention introduces novel 1-aza-2-silacyclobutane compounds whose nitrogen is substituted by a hydrocarbon group or heteroatom-containing hydrocarbon group, whose N--Si bond remains highly reactive, and which are very effective as silanol endblocking agents and silane coupling agents. The present invention also introduces a method for the preparation of these novel 1-aza-2-silacyclobutanes by the intramolecular hydrosilylation reaction of N,N-disubstituted aminosilane.

Abstract: The present invention relates to a method for the preparation of 1-aza-2-silacyclopentane compounds whose nitrogen is substituted by a hydrocarbon group or a heteroatom-containing hydrocarbon group. The method comprises effecting an intramolecular hydrosilylation reaction of a N,N-disubstituted aminosilane. In a preferred method, the intramolecular hydrosilylation reaction is conducted in the presence of a rhodium-containing catalyst.

Abstract: Azasilacycloalkyl functional alkoxysilane which are useful for making polymers for room temperature vulcanizable composition and as adhesion promoters are exemplified by 1-(3-(2,2,4-trimethyl-1-aza-2-silacyclopentyl)propyl)-3-(2-trimethoxysilyl ethyl)-1,1,3,3-tetramethyldisiloxane and 1-(2-(1,2,4-trimethyl-1-aza-2-silacyclopentyl)ethyl)-3-(2-trimethoxysilyle thyl)-1,1,3,3-tetramethyldisiloxane. The methoxy functional azasilacycloalkyl functional compounds can be made from disiloxanes having a silicon-bonded hydrogen atom such as 1-(3-(2,2,4-trimethyl-1-aza-silacyclopentyl)-propyl-1,1,3,3-tetramethyldis iloxane.

Abstract: Azasilacyclopentanes of the general formula ##STR1## are prepared by reacting a dialkoxyalkyl(3-chloro-2-alkylpropyl)silane with a Grignard reagent of the formula R.sup.1 MgBr in the presence of an ether, to make an alkoxyalkylalkenyl(3-chloro-2-alkylpropyl)silane which is reacted with acetyl chloride and a Lewis acid to make chloroalkylalkenyl(3-chloro-2-alkylpropyl)silane which is then reacted with an amine of the formula R.sup.3 NH.sub.2 to make the azasilacyclopentanes.

Abstract: Silicon crosslinkers and chain extenders having at least two heterocyclic Si--N groups per molecule can be used to make compositions which cure in contact with moisture without generating a volatile leaving compound. These heterocyclic Si--N groups are illustrated by the following groups ##STR1## These compositions are useful as coatings for substrates, encapsulants, and sealants.

Abstract: The effects of acne and psoriasis are relived by applying either topically or by oral adminstration, a compound having the structure: ##STR1## wherein R.sub.1, R.sub.2, R.sub.3, R.sub.4 and R.sub.5 are independently selected from the group consisting of H, Cl, straight or branched alkyl of 1 to 10 carbon atoms, NO.sub.2, COOR.sub.6, CN, OR.sub.6, NR.sub.6 R.sub.7, NR.sub.6 C(.dbd.S)NR.sub.7 R.sub.8, NF.sub.6 COR.sub.7, SO.sub.2 NR.sub.6 R.sub.7, CH(CH.sub.3)COOH, CONR.sub.6 R.sub.7, COR.sub.6, OCONR.sub.6 R.sub.7, NR.sub.6 COONR.sub.7, R.sub.9 OR.sub.6, NR.sub.6 SO.sub.2 R.sub.7, Si(CH.sub.3).sub.3, and NR.sub.6 CONR.sub.7 R.sub.8,R.sub.3 together with R.sub.4 forms a benzo ring or taken together with R.sub.2 forms a benzo or tetrahydrobenzo ring or together with R.sub.2 and R.sub.1 forms a: ##STR2## moiety or together with R.sub.2 forms a ##STR3## moiety or R.sub.2 together with R.sub.1 forms a benzo ring or R.sub.2 together with R.sub.3 forms a ##STR4## moiety, or R.sub.

Abstract: An improved process for preparing trialkylsilyl ester and acid halide derivatives of carboxylic acids is provided along with novel trialkylsilyl ester intermediates of 2-(2-furyl)-2-methoximinoacetic acid.

Abstract: Difunctional halo silicon amide compounds are prepared by cleaving the nitrogen-silicon bond in a nitrogen-silicon heterocycle with a reactive halide. The reaction is straight forward with no intermediates or byproducts. The halo functionality is capable of capping any SiOH group. When the other functionality is an acrylamide, the capped entity may be polymerized or crosslinked by free radical initiators of the acrylamide functionality thereby producing useful products such as paper release coatings and photoresists.

Abstract: Polymeric stabilizer compounds with a polyorganosiloxane structure suitable for stabilizing organic polymers against UV radiation and heat, containing sterically hindered piperidino groups in their molecule and easily prepared in well defined, predetermined structures.

Abstract: Cyclosilalactams of the formula ##STR1## which can be used in the preparation of polyorganosiloxanes which react with moisture and do not have leaving groups. These cyclosilalactams are made using chlorosilabutanoic acid and chlorosilapropanoic acid precursors.

Abstract: Materials useful as bonding agents for silicone 1K-and 2K-sealing compositions are the reaction products of 2-(aminoethyl) -aminopropyl-alkoxy silanes of the following formula:H.sub.2 NCH.sub.2 CH.sub.2 NHCH.sub.2 CH.sub.2 CH.sub.2 Si(OR.sup.1).sub.m R.sup.2.sub.3-mwith chlorosilanes of the following formula:R.sup.3.sub.a R.sup.4.sub.b SiCl.sub.4-(a+b)whereinR.sup.1, R.sup.2, R.sup.3 and R.sup.4, independent of each other, are alkyl having 1 to 8 carbon atoms, cycloalkyl having 3 to 8 carbon atoms, alkenyl having 2 to 8 carbon atoms or cycloalkenyl having 3 to 8 carbon atoms;m is 2 or 3,a and b are 0, 1 or 2 and the sum of a and b is 0, 1 or 2.

Abstract: The present invention comprises reaction products resulting from the reaction of hydrazido-substituted or certain amino-substituted polymer stabilizers and cyclic dianhydrides, as well as the use of such products. The polymer stabilizers of the invention are useful for protecting a large variety of synthetic polymeric organic materials from the degradative effects of heat, light and oxygen. Some of the modifiers are flame retardants and many are metal deactivators in addition to their primary activity.

Abstract: This invention relates to a novel class of N-silyl substituted 1-sila-2-azacyclopentane compounds. In a preferred embodiment of the instant invention, the novel compound 1,1-dimethoxy-2-(trimethoxysilyl)-1-sila-2-azacyclopentane is disclosed.

Abstract: Novel room temperature vulcanizable polydiorganosiloxane compositions comprising an .alpha.,.omega.-dihydroxypolydiorganosiloxane and a poly-(alkoxysilylalkyl)amine. These compositions are neutral cure, exhibit excellent shelf life stability, possess a practically controllable cure rate and upon curing produce elastomers which have good adhesion to building materials and which possess good weatherability.

Abstract: The invention is a process for the preparation of a N- or S-1,2-ethylenically unsaturated organic compound which comprises(a) contacting a N- or S-silylated organic compound with an aldehyde, wherein the aldehyde has a hydrogen atom bonded to the carbon adjacent to the carbonyl moiety, at elevated temperatures under conditions such that a N- or S-1-siloxyalkyl-substituted organic compound is prepared; and(b) pyrolyzing the N- or S-1-siloxyalkyl-substituted organic compound under conditions such that the siloxy moiety is elminated to prepare a N- or S-1,2-ethylenically unsaturated compound.

Abstract: Bis(aminoalkyl)disiloxanes such as 1,9-diamino-4,4,6,6-tetramethyl-5-oxa-4,6-disilanonane are prepared by contacting an acyclic olefinic silazane such as 2-methyl-2-sila-3-aza-5-hexene with a hydrosilation catalyst to form an intermediate which is then hydrolyzed. When certain olefinic silazanes are hydrosilated with a reaction product of a platinum compound with an olefinic siloxane, the intermediate is a composition comprising novel cyclic silazanes such as 1,1-dimethyl-1-sila-2-azacyclopentane.

Abstract: Stable, substantially acid-free, one package, moisture curable RTV compositions are provided having a scavenger for chemically combined hydroxy groups of the formula ##STR1## where x equals 1 or 2 and y equals 0 to 3 inclusive. A method for providing the aforesaid moisture curable RTV compositions is also provided. Novel compounds of the formula ##STR2## where x equals 1 or 2 and y equals 0 to 2 inclusive are provided as are methods for making such novel compounds.

Abstract: Silicone-polyimide copolymers having terminal silanol or silicon hydride radicals are provided based on the use of a norbornene terminated polyimide. A hydrosilation reaction is employed to introduce silicon-hydrogen into the terminal position of the polyimide having norbornene termination. The resulting hydrosilyl terminated polyimide is reacted with silanol terminated polydiorganosiloxane in the presence of a catalyst to produce silanol terminated polydiorganosiloxane-polyimide copolymer. Room temperature or low temperature condensation vulcanizable compositions based on the use of such silanol-terminated copolymers provide cured silicon-polyimide copolymers exhibiting improved toughness.

Abstract: Disclosed are 6-amido-3-substituted-amino-1-azabicyclo[3.2.0]hept-2-en-7-one-2-carboxyli c acids (I): ##STR1## wherein R.sup.1 is hydrogen or acyl; and R' and R" are independently selected from the group consisting of: hydrogen, substituted and unsubstituted: alkyl and aralkyl, or together form a substituted or unsubstituted cyclic group. Such compounds and their pharmaceutically acceptable salt, ester and amide derivatives are useful as antibiotics. Also disclosed are processes for the preparation of such compounds, pharmaceutical compositions comprising such compounds and methods of treatment comprising administering such compounds and compositions when an antibiotic effect is indicated.