Abstract: The invention relates to prepolymers containing isocyanate groups which can be prepared by reactinga) organic isocyanates withb) polyetherols containing at least 2 hydroxyl groups per molecule and having molecular weights of greater than 400 and/or polyesterols containing at least 2 hydroxyl groups per molecule and having molecular weights of greater than 400,c) isocyanate-reactive compounds which are at least difunctional and have molecular weights of from 18 to 399, and, if desired,d) Lewis and/or Bronsted acidic compounds ande) conventional auxiliaries and additives, such as antioxidants, light stabilizers or fillers,wherein at least one aromatic aminopolyether alcohol of the formula ##STR1## where R is aryl, alkylaryl containing one or more C.sub.1 - to C.sub.4 -alkyl groups, haloaryl, nitroaryl or cyanoaryl,R' and R" are identical or different and are, independently of one another, hydrogen, alkyl, aryl, aralkyl, alkoxyalkyl, alkoxyaryl or aroxyaryl,x and y are independent of one another andx+y.ltoreq.

Abstract: A method for preparing a polyurethane foam which comprises reacting an organic polyisocyanate and a polyol in the presence of a blowing agent, cell stabilizer and a catalyst composition consisting essentially of a pyrrolizidine of the formula: ##STR1## where R.sub.1 and R.sub.2 independently are --H, --OH, ##STR2## or --NR.sub.4 R.sub.5, R.sub.3 is hydrogen, a C.sub.1 -C.sub.12 alkyl, C.sub.5 -C.sub.6 cycloalkyl, C.sub.6 -C.sub.10 aryl, or C.sub.7 -C.sub.11 arylalkyl group, andR.sub.4 and R.sub.5 independently represent H, a C.sub.1 -C.sub.12 alkyl group, C.sub.5 -C.sub.10 cycloalkyl, C.sub.6 -C.sub.10 aryl, or C.sub.7 -C.sub.11 arylalkyl group, provided that at least R.sub.1 or R.sub.2 is not hydrogen.

Abstract: Hydroxyethylamine compounds are effective as retrovital protease inhibitors, and in particular as inhibitors of HIV protease.

Abstract: The present invention relates to a process for the production of storage stable prepolymers containing free isocyanate groups by reactinga) an organic polyisocyanate component having (cyclo)aliphatically bound isocyanate groups and a maximum functionality of 4.5 withb) one or more hydroxy-functional polyacrylate resins having a content of alcoholic hydroxy groups of 0.05 to 7% by weight at an equivalent ratio of isocyanate groups of component a) to hydroxyl groups of component b) of 3:1 to 40:1, wherein components a) and b) are selected to provide a value B of at most 4 when calculated in accordance with the formula: ##EQU1## wherein F.sub.1 and F.sub.2 represent the NCO and OH functionalities of components a) and b), F.sub.1 representing the component with the lower functionality when the components differ in functionality andval.sub.A /val.sub.I represents the OH/NCO equivalent ratio of components a) and b).

Abstract: Novel (meth)acrylates containing urethane groups Novel (meth)acrylates which also contain urethane groups and other polymerizable groups in one and the same molecule and can be polymerized either by means of free radicals and/or cationically are used for the production of coatings, adhesives, photoresists, solder masks or in stereolithography. The mouldings produced therefrom contain a coherent, homogeneous network and have high strength properties, in particular mechanical properties.

Abstract: Urea linkage-containing alkoxypolyoxyalkylene fluorocarbamates prepared by reacting (a) at least one polyisocyanate which contains at least three isocyanate groups with (b) at least one fluorochemical reagent which contains one functional group which has at least one H and at least two C atoms each of which contains at least two F atoms, (c) at least one hydrophilic, water-solvatable reagent which contains a single functional group which has at least one reactive H, (d) at least one reagent which contains one reactive H and which on reaction with an isocyanate group yields functionality which has abeyant chemical reactivity with fibrous substrates and (e) then with water, reactants (b), (c) and (d) being reacted with 55% to 95% of said isocyanate groups, and water with the remainder.

Abstract: Methods for protecting warm-blooded animals against the formation of myocardial infarct through the administration of 2-phenyl-1,3-propanediol dicarbamate are disclosed.

Abstract: This invention relates to bis-naphthalimides, including 2,2'-[1,2-ethanediylbis[imino(1-methyl-2,1-ethanediyl)]]-bis[5-nitro-1H-be nz[de]isoquinoline-1,3(2H)-dione] and 2,2'-[1,2-ethanediylbis[imino(2-methyl-2,1-ethanediyl)]]-bis[5-nitro-1H-be nz[de]isoquinoline-1,3(2H)-dione], processes for their preparation, pharmaceutical compositions containing them, and methods of using them to treat cancer in mammals.

Abstract: The invention relates to a new polyamine of the following composition: ##STR1## wherein 1.gtoreq.n.gtoreq.6, R represents the hydrocarbon radical of a (cyclo)aliphatic, araliphatic or aromatic diisocyanate having 6-20 C atoms or a trimer thereof andwherein when 2.gtoreq.n.gtoreq.6,R.sup.1 represents an n-valent organic radical such as is formed by removal of n OH groups from a polyhydroxy compound which optionally contains ether oxygen atoms and has an average molecular weight Mn of between 60 and 5,000; andwhen n=1,R.sup.1 represents ##STR2## It furthermore relates to a process for the preparation of a polyamine, in which certain diisocyanates, adducts of diisocyanates with polyols or trimers thereof are reacted with the Schiff base of the following composition: ##STR3## wherein R.sup.2 =H or a branched or unbranched C.sub.1-14 -alkyl radical and R.sup.3 =a branched or unbranched C.sub.1-14 -alkyl radical, an C.sub.1-14 alkyl-substituted phenyl radical or a C.sub.1 -C.sub.

Abstract: Radiation-curable urethane acrylate compounds containing amine and urea groups and based on di- or polyisocyanates, hydroxy compounds and amines contain secondary or tertiary amino groups which are bonded to isocyanate via hydroxyl groups and are obtainable by an addition reaction of primary or secondary amines with hydroxyacrylates.

Abstract: The present invention relates to novel polyether-substituted compounds of imides and their use as surface-active agents.

Abstract: The invention relates to a polyether polyol, a water-curable polyurethane prepolymer prepared by using the polyether polyol, and a composition containing the prepolymer. The above polyether polyol is obtainable by subjecting an active hydrogen compound to addition polymerization reaction with ethylene oxide and an alkylene oxide of 3 to 4 carbon atoms in a specified ratio. The above water-curable polyurethane prepolymer is obtainable by reacting the polyether polyol with a polyisocyanate compound. The above composition comprises a mixture of the water-curable polyurethane prepolymer and the polyisocyanate. The above water-curable polyurethane prepolymer and composition provide a foam of fine and uniform cell structure with improved strength on curing with water.

Abstract: This invention relates to a process for the preparation of highly pure aromatic diurethanes and/or polyurethanes by reaction of the corresponding aromatic diamines and/or polyamines with unsubstituted carbamates with the release of ammonia. The reaction is carried out in the presence of excess carbamates. The resultant reaction mixture is freed from any solvents used, and the formed aromatic diurethanes and/or polyurethanes are purified by extraction with water.

Abstract: Copolymerizable oxime ethers of the general formula ##STR1## where A is a divalent linking member, R.sup.1 and R.sup.2 independently of one another are each C.sub.1 -C.sub.10 -alkyl, C.sub.1 -C.sub.10 -alkoxy, C.sub.5 -C.sub.10 -cycloalkyl or C.sub.5 -C.sub.10 -aryl, each of which may furthermore contain 1-3 nonadjacent nitrogen, oxygen or sulfur atoms as heteroatoms in the carbon chain or in the carbon ring and may be substituted by from one to three C.sub.1 -C.sub.4 -alkyl or C.sub.1 -C.sub.4 -alkoxy groups, R.sup.1 or R.sup.2 may be hydrogen or R.sup.1 and R.sup.2 together form a bridge of 3 to 14 carbon atoms, where some of the carbon atoms may furthermore be part of an aromatic ring, Z is an n-valent organic radical which contains a copolymerizable ethylenically unsaturated group and n is an integer of from 1 to 3.

Abstract: An urethane compound is produced in high yield under mild conditions by reacting a formamide compound with dimethyl carbonate in the presence of basic anion exchange resin as a catalyst or by reacting an amine compound with dimethyl carbonate in the presence of basic anion exchange resin as a catalyst and methyl formate. Separation and recovery of the catalyst and purification of the urethane compound can be carried out very readily, and since control of water content is not particularly required in this invention, an amine compound and dimethyl carbonate of poor quality can be used.

Abstract: A resin for electrophotographic toner comprising a degradable polyester resin which is an amorphous poly (.alpha.-hydroxycarboxylic acid) prepared by direct dehydration-polycondensation of an .alpha.-hydroxycarboxylic acid and having, preferably, a number-average molecular weight ranging from 2000 to 7000. A further resin for electrophotographic toner comprising a degradable polyester resin which may be prepared by reacting an amorphous or semicrystalline poly (.alpha.-hydroxycarboxylic acid), having a number-average molecular weight ranging from 1000 to 7000 or 2000 to 7000 and prepared by direct dehydration-polycondensation of an .alpha.-hydroxycarboxylic acid, with a polyol having at least three hydroxyl groups or a polycarboxylic acid having at least three carboxyl groups in the molecule and, in case of the reaction product with the polyol can further be reacted with a diisocyanate to give an urethane-modified polyester. These polyesters can likewise be used as resins for toner.

Abstract: Liquid hydroxyurethane products having cyclocarbonate end groups are prepared by reacting a molar excess of a bis-carbonate of a bis-glycidyl ether of neopentyl glycol or 1,4-cyclohexanedimethanol with a polyoxyalkylenediamine such as a polyoxypropylenediamine. These products are useful for the preparation of polyurethanes, polyurethane polyols, polyester polyurethane polyols, and polycarbonate polyurethane polyols.

Abstract: This invention relates to bis-naphthalimides, including 2,2'-[1,2-ethanediylbis[imino(1-methy1-2,1-ethanediyl)]]-bis[5-nitro-1H-be nz[de]isoquinoline-1,3(2H)-dione] and 2,2'-[1,2-ethanediylbis[imino(2-methyl-2,1-ethanediyl)]]-bis[5-nitro-1H-be nz[de]isoquinoline-1,3(2H)-dione], processes for their preparation, pharmaceutical compositions containing them, and methods of using them to treat cancer in mammals.

Abstract: Disclosed are liquid alkylphenyl poly(oxypropylene) aminocarbamates which do not form a wax when cooled to -40.degree. C. in a 50 weight percent solution with toluene, said aminocarbamates having at least one basic nitrogen and an average molecular weight of about 600 to 6,000 and wherein the alkyl group is substantially straight-chain of from 25 to 50 carbon atoms. Also disclosed are fuel compositions and concentrates as well as lubricating oil compositions and concentrates containing said alkylphenyl poly(oxypropylene) aminocarbamates.

Abstract: The invention relates to novel ureas and urethanes of Formula I: ##STR1## which stimulate cytokine production and may be used to accelerate recovery from neutropenia accompanying radio- or chemotherapy, bone marrow transplantation, or infections. Compounds in the invention or pharmaceutical compositions employing these compounds may be useful in the treatment of cancer, AIDS, aplastic anemia, myelodysplastic syndrome, and infectious diseases, and in the enhancement of immune response.

Abstract: This invention relates to polyurethane (meth)acrylates that are prepared from certain liquid hydrocarbon diols and/or derivatives of said liquid hydrocarbon diols, polyfunctional isocyanates, and hydroxyalkyl acrylates and methacrylates. The polyurethane (meth)acrylates are useful as decorative and functional coatings, inks, adhesives, sealants, and formed parts.

Abstract: A urethane prepolymer composition useful as sealant is disclosed. The composition comprises a reaction product of an organic polyisocyanate and a polyether polyol mixture at an NCO/OH equivalent ratio from 1.6 to 2.5. The polyether polyol mixture contains (a) from 75 to 95 % by weight of the mixture of a polyoxyalkylenediol having an average MW from 400 to 1,000 and an oxyethlene unit content greater than 50 % by weight, and (b) the balance of the mixture of a polyoxyalkylenetriol having an average MW from 5,000 to 10,000 and an oxyethylene unit content greater than 50 % by weight. An equivalent composition is produced by reacting the polyoxyalkylenediol and polyoxyalkylenetriol with the organic polyisocyanate separately and mixing together after the reaction.

Abstract: The present invention provides a process for preparing urethanes and carbonates from an amine or an alcohol, carbon dioxide and a hydrocarbyl halide. The amine or alcohol is reacted with carbon dioxide in a suitable solvent system and in the presence of an amidine or guanidine base, to form the ammonium carbamate or carbonate salt which is then reacted in a polar aprotic solvent with a hydrocarbyl halide. Polymer products can also be prepared utilizing this process or utilizing the resulting urethanes and carbonates under standard polymerization conditions.

Abstract: The present invention is directed to a process for the preparation of amines containing urethane and urea groups. The amines are produced by reacting A) isocyanate prepolymers containing urethane groups and in which the isocyanate groups are reversibly blocked with secondary monoamines with B) amines having molecular weights of from 60 to 500, which are at least difunctional and which have a total of at least two primary or secondary amino groups, with splitting off of the secondary monoamine. The invention is also directed to the amines so produced and to the use as a hardener for an epoxide resin.

Abstract: Reaction products in which polyethers are connected to hydroxyalkylated polyamines using diisocyanates have been found to be effective ashless dispersants and detergents for various lubricants and fuels.

Abstract: Ethylenically unsaturated, fluorine-containing urethane derivatives (see Formula I) whose urethane group is substituted on its carboxyl radical by a fluorinated organic radical and on its nitrogen atom by an unfluorinated, ethylenically unsaturated organic radical. Their preparation can be carried out by reacting ethylenically unsaturated, unfluorinated isocyanates with fluorinated organic hydroxyl compounds in bulk in the absence of water or advantageously in inert organic solvents or in ethylenically unsaturated monomers capable of polymerization which behave inertly under the reaction conditions, it being possible to obtain the urethane derivatives directly in liquid or highly viscous or waxy or solid or crystalline form.Urethane derivatives prepared according to the invention are usually readily to very readily soluble in standard nonaqueous, nonpolar inert organic solvents or in various monomers capable of copolymerization.

Abstract: This invention relates to a process for the preparation of N,N-disubstituted mono- and oligourethanes by the reaction of N-aromatically, N-aliphatically, N-cycloaliphatically, and N-araliphatically substituted mono- and oligourethanes with dialkyl carbonates in the presence of at least stoichiometrically equivalent quantities of solid alkali or alkaline-earth carbonate in excess dialkyl carbonate and/or an aprotic organic solvent and in the presence of a phase transfer catalyst.

Abstract: Processes for producing carbamates comprise contacting a first reactant selected from primary amine components, secondary amine components, urea components and mixtures thereof; carbon monoxide; at least one organic hydroxyl component and at least one oxygen-containing oxidizing agent in the presence of a catalyst composition comprising at least one metal macrocyclic complex, preferably in the further presence of a halogen component.

Abstract: Unsaturated urethane having specified molecular structure shown by Formula (1) given below and vinyl monomers which are copolymerizable with such unsaturated urethane can form together polymerizable compositions which, as well as in-mold cured products therefrom, have improved characteristics such as compatibility between the constituents and water resistance: ##STR1## where X is a residual group obtained by removing the hydroxyl groups from a trihydric or tetrahydric polyol; R.sup.1 and R.sup.3 are each H or CH.sub.3 ; R.sup.2 is higher aliphatic hydrocarbon group with 5.about.21 carbon atoms; p and q are each 1 or 2; r is an integer 0.about.2 such that p+q+r=3 or 4 and p+r=2 or 3; and a is an integer 2.about.4.

Abstract: In preparing an iodoalkynyl carbamate by iodinating an alkynyl carbamate with iodine monochloride in water or a solvent mixture composed of water and an organic solvent in the presence of a base, the iodoalkynyl carbamate can be obtained in a yield of as high as 96 to 98% by using the alkynyl carbamate in a concentration of 5 to 20% by weight, dissolving the iodine monochloride in an aqueous solution of hydrochloric acid or an aqueous solution of an alkali metal chloride (the amount of iodine monochloride used being within the range of 1.0 to 1.2 moles per mole of the alkynyl carbamate and the amount of base used being within the range of 0.95 to 2.00 gram equivalents per mole of iodine monochloride), and carrying out the reaction at a temperature of 10.degree. to 40.degree. C. for a period of 1 to 4 hours.According to this process, highly pure iodoalkynyl carbamates which are useful as industrial germicides can be prepared with good selectivity and in high yield.

Abstract: A process for producing a carbamate is disclosed. In one embodiment, the process comprises contacting a mixture comprising a primary amine component, an urea component and a hydroxy nitrogen component, in particular at least one oxime, at conditions effective to form a carbamate. Certain novel carbamates are also disclosed.

Abstract: A urethane is formed in a new way, without requiring the use of isocyanates. The urethane is formed by reacting a compound containing a plurality of cyclocarbonate groups with a diamine in which the two amine groups have different reactivities with cyclocarbonate, so as to form a urethane oligomer with amine end groups. The urethane oligomer can then be reacted in several different ways to form polyurethane.

Abstract: The present invention is directed to novel poly(olefin)-polyamine-N-substituted polycarbamates, useful for preventing or reducing deposits in engines having the formula I ##STR1## wherein "n" is 2-8; R.sup.1 is a poly(olefin) chain having an average molecular weight of from about 500 to about 9900; R.sup.2 is an alkylene group containing 2 to 8 carbon atoms; R.sup.3 is independently a hydrogen atom, an alkyl group containing from 1 to 7 carbon atoms or --COOR.sup.5 with at least two of R.sup.4 being --COOR.sup.5 and wherein R.sup.5 is a hydrocarbyl or substituted hydrocarbyl group containing up to 20 carbon atoms.

Abstract: This invention relates to a polypropenyl ether having the formula ##STR1## wherein m and s each independently have a value of from 1 to 6; R is alkyl or phenyl optionally substituted with lower alkyl or halogen; A is C.sub.1 to C.sub.12 alkylene, aryl or --R.sub.1 OR.sub.2 --, optionally substituted with lower alkyl, haloalkyl, halogen or phenyl; one of p and p' has a value of one and the other is zero; R.sub.3 is C.sub.1 to C.sub.20 alklylene substituted with expression indicated by n and n has a value of from 1 to 10.

Abstract: The compound of the formula ##STR1## (wherein R, R.sub.1 and R.sub.2 have the meanings given in the description), salts thereof with pharmaceutically acceptable organic or inorganic acids, process and intermediates for the preparation thereof and a pharmaceutical composition containing said compound are described.The compounds of formula I and the salts thereof are useful in the treatment of heart and renal diseases.

Abstract: This invention relates to a polypropenyl ether having the formula ##STR1## wherein m and s each independently have a value of from 1 to 6; R is alkyl or phenyl optionally substituted with lower alkyl or halogen; A is C.sub.2 to C.sub.12 alkylene or C.sub.6 to C.sub.22 aryl, both optionally substituted with lower alkyl, haloalkyl, halogen or phenyl.

Abstract: The present invention relates to aliphatic polyurethanes which contain acryloyl groups, have a viscosity at 23.degree. C. of 1000 to 300,000 mPa.s as an 80% by weight solution in butyl acetate and are based on the reaction product (at an NCO/OH equivalent ratio 0.5:1 to 1:1) ofa) 1.0 mole of a polyisocyanate component containing at least 50 equivalent percent, based on NCO equivalents, of 1,6-diisocyanato-2,2,4-trimethylhexane and/or 1,6-diisocyanato-2,4,4-trimethylhexane withb) 0.7 to 1.5 moles of at least one monohydric alcohol having a molecular weight of 116 to 300 and containing acryloyl groups andc) 0.2 to 0.6 moles of at least one polyhydric alcohol having a molecular weight of 92 to 200.The present invention also relates to a process for the preparation of these aliphatic polyurethanes.

Abstract: This invention relates to certain polyamine hydroxyalkyl carbamate monomers, polymers and copolymers thereof and blends of the same with crosslinking film making agents and films thereof deposited on substrates.

Abstract: N,N-disubstituted monourethanes and oligourethanes are produced by reacting (a) N-aliphatically and/or N-cycloaliphatically and/or N-araliphatically substituted monourethanes and/or oligourethanes with an alkylating agent in the presence of a solid alkali metal hydroxide. No solvent need by employed but if a solvent is used, that solvent should be an aprotic organic solvent. The alkali metal hydroxide must be used in an equivalent amount. A phase transfer catalyst may optionally be employed. The N,N-disubstituted urethanes obtained by this process are useful in the production of dyes, pharmaceutical products and thermostable synthetic materials.

Abstract: Products of the reaction of (a) a polyisocyanate, (b) a CH-active alkyl ester, (c) a polyoxyalkyleneamine and (d) if appropriate a further NH- and/or OH-reactive compound as the curing component for binders (B) which contain groups which are capable of amide and/or ester formation.Mixtures of (A) and (B), and where appropriate diluents (C) and additives (D), have a long shelf life, even in aqueous systems, and are particularly suitable for aqueous paint formulations.

Abstract: A process for producing carbamic acid esters (N-phenyl carbamate) which comprises reacting an amino group-containing compound (aniline), oxygen, a nitro group-containing compound (nitrobenzene), a carbon monoxide-containing gas and a hydroxyl group-containing organic compound (ethyl alcohol) in the presence of a compound of a transition metal belonging to Pt group of VIII group (Pd) of the Periodic Table as catalyst, a non-metal halide (HCl) and water.

Abstract: The present invention relates to N,N-disubstituted compounds containing urethane groups and terminal hydroxyl groups corresponding to the general formula ##STR1## wherein X is the residue of a strong memobasic or polybasic acid remaining after dissociation of the proton or protons of said acid or a hydroxyl group;Y is an n-functional hydrocarbon group having a molecular weight of from about 15 to about 8000 (preferably from about 300 to about 4000) and optionally interrupted by oxygen, sulfur, or silicon atoms, or by ester, carbonate, urea, N-monosubstituted urethane, or N,N-disubstituted urethane groups;1.sub.R hydrogen or a hydrocarbon group having a molecular weight of from about 15 to about 200;2.sub.R is the radical of an alkylating or arylating agent; and is an integer of from 2 to about 6.The present invention further relates to a process for preparing such compounds and to a method for using such compounds in the production of plastics.

Abstract: Macromers for use in preparing stable, low viscosity graft polymer polyols of high solids content are disclosed. These macromers are easily made in high yield with short cycle times, and may be used to prepare graft dispersions containing amine based polyols.

Abstract: Azulenesquaric acid dyes of the formula ##STR1## where L is substituted or unsubstituted C.sub.1 -C.sub.12 - alkylene,R.sup.1 is C.sub.1 -C.sub.20 - alkyl, C.sub.5 -C.sub.7 - cycloalkyl or substituted or unsubstituted phenyl andR.sup.2, R.sup.3, and R.sup.5 are each independently of the others hydrogen or substituted or unsubstituted C.sub.1 -C.sub.12 -alkyl,with the proviso that when R.sup.5 is hydrogen the positions of the substituents CH.sub.2 --L--O--CO--NHR.sup.1 and R.sup.4 on an azulene ring may also be interchanged within a ring in either or both of the azulene rings, derived from azulene intermediates that contain urethane groups, are suitable for use in an optical recording medium.

Abstract: A hardening agent for epoxy compounds prepared by reacting A) at least one member of the group consisting of polyalkyleneetherdiols and polyalkyleneetherpolyols with B) at least one polyisocyanate with a molar ratio of hydroxy groups to isocyanate group of 1:1.8 to 3, reacting the resulting product with C) an amine having at least one free primary or secondary amino group and at least one protected primary amino group with a molar ratio of isocyanate to amino groups of 1:1 to 2 and subjecting the latter product to hydrolysis useful for preparation of flexible hardened products with excellent mechanical properties.

Abstract: Substituted amino carbamate derivatives corresponding to the formula ##STR1## are effective in stabilizing organic materials against oxidative, thermal and actinic degradation, said derivatives being particularly effective as color improvers and process stabilizers in organic materials containing phenolic antioxidants and/or metal salts of fatty acids and/or hindered amine light stabilizers and/or organic phosphorus compounds; and certain of said derivatives as new compounds.

Abstract: Long-chain aliphatic hydrocarbyl polyamino additives which comprise a long-chain aliphatic hydrocarbyl moiety, a polyamino moiety and an oxy-carbonyl connecting group which joins the aliphatic hydrocarbyl moiety and the polyamino moiety are useful as dispersants in fuel compositions and in lubricating oil compositions.

Abstract: The invention relates to rhodium complexes of the formula[A--O--(CH.sub.2 CH.sub.2 O).sub.n --A].sup.2+ 2X.sup.- (Ia)and[A--O--(CH.sub.2 CH.sub.2 O).sub.m --CH.sub.3 ].sup.+ X.sup.-(Ib)in whichn=5-1,000,m=5-250,X.sup.- denotes a tetrafluoroborate, hexafluorophosphate or per-chlorate anion,A denotes a radical of the formula ##STR1## (en).sub.2 denotes two molecules of a monoolefin or one molecule of a diolefinAr denotes phenyl or phenyl which is substituted by one or two alkyl groups having 1 or 2 carbon atoms andR.sup.1 denotes an arylene or alkylene bridge,and their use for the preparation of L-phosphinothricin and its derivatives by enantioselective catalytic hydrogenation of 2,3-dehydrophosphinothricin (derivatives).

Abstract: An oligomeric aromatic pigment dispersant is the reaction product of a diisocyanate and a diol or diamine. The oligomeric dispersant is comprised of at least 25 weight percent of a compound of the formula: ##STR1## wherein n is an integer of from 3 to 15, AR is a residual aromatic connecting group, DI is a residual organic connecting group, CAP is a capping moiety, and X is a residual connecting group selected from the group consisting of: ##STR2## The oligomeric aromatic dispersant has at least 3 aromatic "heads" and 2 aliphatic or rosin "tails".

Abstract: A polymeric peroxide comprising a dilvalent recurring unit having the formula: ##STR1## wherein the recurring unit of Formula I has a 10 hour half-life temperature of at least 80.degree. C. and optionally a divalent recurring unit having the formula: ##STR2## wherein R.sup.1, R.sup.2, R.sup.3, R.sup.5, X, X.sup.1, Y, Z, y and z are as defined in the Detailed Description of the Preferred Embodiments and the polymeric peroxide has a molecular weight of 1,000 to 200,000. The polymeric peroxides are derived from hydroxy-hydroperoxides of dihydroxy dialkyl peroxides. These polymeric peroxides can be used for preparing block copolymers and compatibilizing polymer blends and alloys.