Abstract: There is disclosed an organic nonlinear optical material which comprises a polymer having the following constitutional units, in amounts of 5 to 100 mole % of (I), 0 to 50 mole % of (II) and 0 to 50 mole % of (III), and a weight average molecular weight (Mw) of the polymer being 10,000 to 2,000,000: ##STR1## wherein m, n, X, Y and A have the meanings as defined in the specification, ##STR2## wherein R.sup.2 represents an alkyl group, and ##STR3## A nonlinear optical element which is tough with wide surface as well as having large nonlinear optical effect can be obtained.

Abstract: Binders for moisture-hardening coating or sealing compositions contain modified copolymers having a weight average molecular weight of from 1,500 to 75,000 determined by gel permeation chromatography of olefinically unsaturated compounds containing chemically incorporated moieties which are addition-reactive to amino wherein the modified copolymers contain both(i) intramolecular carboxylic anhydride moieties and(ii) olefinically unsaturated (meth)acrylate moieties in chemically bound form as the moieties which are addition-reactive to amino, with the anhydride equivalent weight being in the range from 392 to 9,800 and the (meth)acrylate equivalent weight in the range from 284 to 7,100.

Abstract: Oxidized polyisobutenes, that is polyisobutenes containing ketonic and carboxylic acid carbonyl groups, are produced by passing through a column of the polyisobutene maintained at a temperature in the range from 140.degree. to 200.degree. C. and at atmospheric or elevated total pressure a molecular oxygen-containing gaseous oxidant at a gas flow rate greater than 10 liters cm.sup.-2 h.sup.-1 measured at the operating pressure. The oxidized polyisobutenes can be reacted for example with an aliphatic polyamine to produce a lubricating oil additive or with an aliphatic polyamide and formaldehyde to produce a fuels additive.

Abstract: A method for reducing friction loss in flowing hydrocarbon fluids is disclosed. The method comprises adding to the fluid an effective amount of an oil-soluble polyamine and a terpolymer of styrene, alkyl acrylate and a carboxylic acid selected from the group consisting of acrylic acid and methacrylic acid. Related compositions are also disclosed.

Abstract: A partially crosslinked, unsaturated elastomeric polymer of a C.sub.4 to C.sub.7 isomonoolefin and a C.sub.4 to C.sub.14 conjugated multiolefin is provided which has a low crosslink density. The partially crosslinked polymer is produced by curing an uncrosslinked unsaturated polymer having a low level of chemically bound halogen with a curing agent which reacts only with the halogen. Processes for preparing these partially crosslinked unsaturated polymers are also provided.

Abstract: A pigment dispersing agent for paints is a combination of particular amine compound and particular acrylic copolymer or a combination of particular amine compound, particular acrylic copolymer and particular polyester resin. This pigment dispersing agent is applicable to both acrylic resin series paints and polyester resin series paints.

Abstract: Ultraviolet light stabilizers are chemically bound to anhydride containing polymers or copolymers. Polymeric stabilizers are prepared by the reaction of primary amino or hydrazido-substituted UV absorbers with some or all of the anhydride groups of the polymer or copolymer to form pendant stabilizer substituted imide or amic acid groups. The polymer bound stabilizers are not lost from the polymer system by volatilization, migration, or extraction, even at high temperature. The polymeric stabilizers of this invention may be used as they are or as concentrates to stabilize other polymer systems.

Abstract: Polymer bound stabilizer compounds are provided in which two or more different classes of stabilizers are chemically bound to anhydride containing polymers or copolymers. Polymeric stabilizers are prepared by the reaction of primary amino or hydrazido substituted stabilizers (i.e., antioxidants, light stabilizers, etc.) with some or all of the anhydride groups of the polymer or copolymer to form pendant stabilizer substituted imide or amic acid groups. The polymer bound stabilizers are not lost from the polymer system by volatilization, migration or extraction, even at high temperatures. The polymer bound stabilizer compounds may be used as concentrates to stabilize other polymer systems.

Abstract: Oxidised polyisobutenes, that is polyisobutenes containing ketonic and carboxylic acid carbonyl groups, are produced by passing through a column of the polyisobutene maintained at a temperature in the range from 140.degree. to 200.degree. C. and at atmospheric or elevated total pressure a molecular oxygen-containing gaseous oxidant at a gas flow rate greater than 10 liters cm.sup.-2 h.sup.-1 measured at the operating pressure. The oxidized polysisobutenes can be reacted for example with an aliphatic polyamine to produce a lubricating oil additive or with an aliphatic polyamine and formaldehyde to product a fuels additive.

Abstract: A vulcanizable elastomer composition is prepared by blending 100 parts by weight of a copolymer containing(A) 50-85% by mole of ethylene unit,(B) 10-45% by mole of an alkyl acrylate unit having the formula (I), ##STR1## wherein R.sub.1 is an alkyl having 1-8 carbon atoms, (C) 2-35% by mole of an alkoxyalkyl acrylate unit having the formula (II), ##STR2## wherein R.sub.2 is hydrogen or methyl, R.sub.3 is an alkylene having 1-4 carbon atoms, and R.sup.4 is an alkyl or alkoxyalkyl, each having 1-4 carbon atoms, and(D) up to 5% by mole of a glycidyl ester unit having the formula (III), ##STR3## wherein R.sup.5 is hydrogen or methyl, and 0.1-10 parts by weight of at least one vulcanizing agent.The vulcanizable composition can give vulcanizates of well-balanced properties having an improved low-temperature resistance and retaining excellent oil resistance.

Abstract: A partially crosslinked, unsaturated elastomeric polymer of a C.sub.4 to C.sub.7 isomonoolefin and a C.sub.4 to C.sub.14 conjugated multiolefin is provided which has a low crosslink density. The partially crosslinked polymer is produced by curing an uncrosslinked unsaturated polymer having a low level of chemically bound halogen with a curing agent which reacts only with the halogen. Processes for preparing these partially crosslinked unsaturated polymers are also provided.

Abstract: Tapered block copolymers of monovinylidene aromatic monomers and conjugated diene monomers having an isolated polymerized monovinylidene aromatic content of from 30 to 75 percent, hydrogenated derivatives thereof and a process for their preparation.

Abstract: The present invention relates to moisture-hardening binder compositions containingA) 30 to 99 parts by weight of a component based on at least one copolymer prepared from olefinically unsaturated compounds having a weight average molecular weight of about 1,500 to 75,000 and containing chemically incorporated groups which are reactive with amino groups in an addition reaction andB) 1 to 70 parts by weight of a polyamine component based on at least one organic polyamine containing blocked amino groups.characterized in that the copolymers of component A) contain both intramolecular carboxylic anhydride groups and also carbonate groups in chemically bound form, the anhydride equivalent weight of the copolymers being 327 to 9,800 and the carbonate equivalent weight of the copolymers being 465 to 18,600, component A) containing a total of 0.2 to 8 anhydride and carbonate groups for each blocked amino group present in component B).

Abstract: Curable compositions comprise(A) a polyglycidyl ether of a polyhydric phenol,(B) a polyglycidyl ether of a polyhydric alcohol,(C) a nitrogen-containing latent hardener for epoxide resins and(D) as cure accelerator dispersed as a powder in the composition, a solid solution of a polymeric phenol with an aliphatic polyamine having two or more amine groups, each of the amine groups being tertiary and at least two of the amine groups being dimethylamino groups.

Abstract: This invention provides a pressure sensitive adhesive composition comprising an acrylic copolymer component (A) which is at least in part an acetoacetyl group-containing acrylic copolymer and at least one curing component (B) selected from the class consisting of isocyanate compounds, epoxy compounds, aldehyde compounds, non-amino resin amine compounds, metal salts, metal alkoxides, metal chelate compounds, ammonium salts and hydrazine compounds.This adhesive composition is well-balanced in the triad of tack, adhesion, cohesion in adhesion technology and can be advantageously used in various applications such as adhesive tapes and labels.

Abstract: A vulcanizable elastomer composition is prepared by blending100 parts by weight of a copolymer containing(A) 50-85% by mole of ethylene unit,(B) 10-45% by mole of an alkyl acrylate unit having the formula (I), ##STR1## wherein R.sub.1 is an alkyl having 1-8 carbon atoms, (C) 2-35% by mole of an alkoxyalkyl acrylate unit having the formula (II), ##STR2## wherein R.sub.2 is hydrogen or methyl, R.sub.3 is an alkylene having 1-4 carbon atoms, and R.sub.4 is an alkyl or alkoxyalkyl, each having 1-4 carbon atoms, and(D) up to 5% by mole of a glycidyl ester unit having the formula (III), ##STR3## wherein R.sup.5 is hydrogen or methyl, and 0.1-10 parts by weight of at least one vulcanizing agent.The vulcanizable composition can give vulcanizates of well-balanced properties having an improved low-temperature resistance and retaining excellent oil resistance.

Abstract: A shaped article of a crosslinked elastomer, having a crosslink density continuously decreased from the surface toward the interior at a specific gradient, and being characterized with excellent surface non-stickiness and low friction properties, while maintaining tensile strength, elongation and compression set resistant properties as well as elastomeric properties.

Abstract: Polymer bound stabilizer compounds are provided in which two or more different classes of stabilizers are chemically bound to anhydride containing polymers or copolymers. Polymeric stabilizers are prepared by the reaction of primary amino or hydrazido substituted stabilizers (i.e., antioxidants, light stabilizers, etc.) with some or all of the anhydride groups of the polymer or copolymer to form pendant stabilizer substituted imide or amic acid groups. The polymer bound stabilizers are not lost from the polymer system by volatilization, migration or extraction, even at high temperatures. The polymer bound stabilizer compounds may be used as concentrates to stabilize other polymer systems.

Abstract: Ultraviolet light stabilizers are chemically bound to anhydride containing polymers or copolymers. Polymeric stabilizers are prepared by the reaction of primary amino or hydrazido-substituted UV absorbers with some or all of the anhydride groups of the polymer or copolymer to form pendant stabilizer substituted imide or amic acid groups. The polymer bound stabilizers are not lost from the polymer system by volatilization, migration, or extraction, even at high temperature. The polymeric stabilizers of this invention may be used as they are or as concentrates to stabilize other polymer systems.

Abstract: A polyacrylamide of high brightness and retention characteristics and low biological toxicity comprises a polyacrylic acid having covalently bound thereto at least one residue of a compound of the formula ##STR1## wherein R.sup.1 is H, (C.sub.1 -C.sub.6)alkyl, (C.sub.2 -C.sub.6)alkenyl, (C.sub.2 -C.sub.6)alkynyl or (C.sub.1 -C.sub.6)alkoxyl;R.sup.2 is H, (C.sub.1 -C.sub.6)alkyl, (C.sub.2 -C.sub.6)alkenyl, (C.sub.2 -C.sub.6)alkynyl or (C.sub.1 -C.sub.6)alkoxyl; andR.sup.3 is H or NR.sub.n' wherein n is 2 or 3; wherein if n=3 the compound further comprises X.sup.-, wherein X.sup.- is an anion.A paper whitening composition comprises a whitening amount of the above amide polymer.A cellulosic product of high brightness and retention characteristics and low biological toxicity comprising the polyacrylamide of this invention. A food product is packaged with the above cellulosic product.

Abstract: Improved water-absorbing, crosslinked acrylate resins are prepared by aqueous polymerization of (A) acrylic acid neutralized 70 to 100 mole percent for example with ammonia and/or caustic alkali and/or an amine; with (B) acrylamide in a mole ratio of 70 to 100 mole percent (A) to 30:0 mole percent (B); (C) styrene, in an amount of 0% to 25% based on the weight of acrylic acid or acrylate; and (D) a water miscible or a water soluble polyvinyl monomer in the presence of (E) a metal oxide, such as titanium dioxide, in an amount of 0.001% to 5% based on the total weight of (A), (B), (C), (D) and (E), such that the amount of (D) is 0.001 to 0.6 weight percent based on the total weight of (A), (B), (C), (D) and (E). In addition, surface treating the water-absorbing crosslinked acrylate resins with a polyquaternary amine substantially further increases both the rate of water absorption and the quantity of water absorbed and retained by the metal oxide-containing resin.

Abstract: Isobutylene homopolymers and copolymers are prepared using a catalyst system comprising a haloadamantane component and a Lewis acid. Branched polymers are prepared using polyhaloadamantanes, the branches being attached to the adamantane at the former location of the halide. The preferred catalyst systems are diethylaluminum chloride and bromoadamantane as well as polybromo, or polychloroadamantanes.

Abstract: An ionomer resin, a film or sheet of the ionomer resin and laminated articles having a lamina of the ionomer resin film are provided. The ionomer resin consists of ionically crosslinked ethylene-methacrylic acid copolymer or ethylene-arcylic acid copolymer which is neutralized with a polyamine. The polyamine neutralized ionomer resin may be formed into a film or sheet which may be self-supporting or may be laminated to glass to form a safety glass.

Abstract: Compositions useful as a binder in lacquers and coating compositions and which are curable by moisture contain:(A) from 30 to 99 parts by weight of at least one copolymer of olefinically unsaturated compounds having a weight average molecular weight of from 1500 to 75,000 and containing chemically incorporated moieties capable of undergoing an addition reaction with amino groups, and(B) from 1 to 70 parts by weight of at least one organic polyamine containing blocked amino groups,wherein (i) the copolymers of component (A) contain both intramolecular carboxylic acid anhydride moieties and epoxide moieties in a chemically bound form, with the anhydride equivalent weight of the copolymers being from 393 to 9,800 and the epoxide equivalent weight of the copolymers from 568 to 14,200, and (ii) the binder composition contains from 0.2 to 8 anhydride and epoxide moieties for each blocked amino group.

Abstract: Pendant amide-containing polymers may be modified in such a way to achieve substituted pendant amide groups described by the structure: ##STR1## wherein: R is chosen from the group consisting of hydrogen and lower alkyl (C.sub.1 -C.sub.4) groups,R.sup.1 is a multivalent hydrocarbonaceous bridging group containing from 1-20 carbon atoms,X is a tertiary amine or a quaternary ammonium salt functional group,Y is chosen from the group consisting of --OR"', and ##STR2## and mixtures thereof, and whereinR'" is chosen from the group consisting of hydrogen, alkyl groups, aryl alkyl, aryl groups and the like,q ranges from 0-50,m ranges from 0-24,n ranges from 0-24, provided that the sum of m plus n is at least 1.Processes for achieving modified polymers having the above functional group is also disclosed.

Abstract: Non-crosslinked reaction products of compounds (A) which contain structural units carrying 1,3-dioxolan-2-one groups in random distribution and compounds (B) which contain at least one primary aliphatic or cycloaliphatic amino group and additionally at least one further basic amino group.These reaction products are suitable, if appropriate together with conventional curing agents, especially as binders for coatings, above all electrodip coatings.

Abstract: Curable liquid compositions comprise(A) a liquid epoxide resin and(B) as curing agent for (A), more than 10% by weight, based on the weight of (A), of a solid solution of a polymeric phenol, such as a polymer of p-vinyl phenol or a phenolic novolak resin, and a polyamine having at least one primary amine group, such as diethylenetriamine or triethylenetetramine, the solid solution (B) being disposed as a powder in the epoxide resin. The compositions are useful as adhesives.

Abstract: A crosslinkable anionic binder composition which comprises an emulsion copolymer containing acrylamidoglycolic acid (AGA) and a zirconium III salt of an alpha or beta hydroxycarboxylic acid, the pH of the composition being from about 1.5 to 4.5. Provided are nonwoven binder compositions which are stable for extended periods prior to application of the binder composition onto the nonwoven substrate and initiation of crosslinking by application of heat.

Abstract: The fuel or lubricant composition proposed contains one or more polybutyl or polyisobutylamines of the general formula I ##STR1## where R.sub.1 is a polybutyl- or polyisobutyl radical derived from isobutene and up to 20% by weight of n-butene and R.sub.2 and R.sub.3 are identical or different and are each hydrogen, an aliphatic or aromatic hydrocarbon, a primary or secondary, aromatic or aliphatic aminoalkylene radical or polyaminoalkylene radical, a polyoxyalkylene radical or a hetaryl or heterocyclyl radical, or, together with the nitrogen atom to which they are bonded, form a ring in which further hetero atoms may be present.

Abstract: A blend of 80-99 weight percent chlorinated polyethylene containing 15-60 weight percent chlorine with 20-1 weight percent of polyethylene containing up to 5 weight percent chlorine and 0.5-5 weight percent of a grafted unsaturated dicarboxylic acid or anhydride is disclosed. The preferred chlorinated polyethylene is made by chlorinating a blend of high and low density polyethylene.

Abstract: Non-polluting thinning adjuvant for sea-water and/or fresh-water based drilling muds.Non-polluting thinning adjuvant for sea-water and/or fresh-water based drilling muds, with the aim to maintain their rheological characteristics in the extreme conditions of temperature and pressure which prevail in wells drilled at great depths. This thinning adjuvant is characterized by the fact that it is a hydrosoluble copolymer resulting from the copolymerization of ethylenic acids, acrylamides and ethylenic esters of phosphoric acid.Its general formula is: ##STR1## in which the indices m,n,p -expressed in % in mole- are chosen from the following intervals:0%<m<90%2%<n<100%0%<p<90%and where radicals R.sub.1, R.sub.2 and R.sub.4 are chosen from the group consisting of H and the alkyles, and radical R.sub.3 is chosen from the group consisting of alkylenes and alkylene-oxides and/or polyalkylene oxides.

Abstract: Compositions comprising an amine-reactive vinyl polymer and a polyfunctional amine crosslinker when combined with a benzotriazole or a polypyridyl, alone, or in further combination with 2-hydroxypyridine cure into coatings having superior corrosion resistance.

Abstract: Magnetic polymer particles prepared by treating compact or porous polymer particles with a solution of iron salts and, if desired, salts of other metals which are capable of forming magnetic ferrites, in which the solution swells or penetrates into the particles. Iron hydroxide and possible other metal hydroxides are precipitated, for instance by raising the pH value, and the particles are optionally heated. In the iron salts used the ratio between di- and trivalent iron is suitably such that magnetic iron oxide is formed directly. It is also possible to use oxidizing or reducing groups or additives to obtain such a ratio. When other metal salts are used in addition to iron salts, the operation is carried out in the same manner. For instance, when Mn.sup.++, Co.sup.++ or Ni.sup.++ salts are used in addition to Fe.sup.++ salts, the divalent iron is oxidized to trivalent so that magnetic ferrite is obtained. The polymer particles which are treated with metal salts preferably contain metal-binding groups.

Abstract: An electromagnetic shielded body comprising laminating or adhering to the surface of the body or incorporating as an internal lamina of a multiple laminar body a layer of film or powder of an electroconductive material which consists of a dehydrohalogenated haloorganic polymer or copolymeric material prepared by dehydrohalogenating said haloorganic polymeric material in the presence of at least one-half mole of a liquid or solution of an amine per mole of halogen moiety in said polymeric material at from 15.degree. C. to about 250.degree. C. for from about 2 minutes to about 14 days.

Abstract: The invention relates to new bead-shaped crosslinked macroporous copolymers containing epoxide groups and basic amino groups, which are obtainable by reacting polymerizable glycidyl compounds, before or during free radical bead polymerization, which is carried out in the presence of agents which impart porosity and, if appropriate, with the addition of polyvinyl compounds which can be polymerized by free radical polymerization, with amines which are capable of reacting with at least two epoxide groups, a process for their preparation and their use, for example, for binding biologically active substances, for the preparation of strongly basic anion exchangers and hydrophilic chromatography resins for biomaterials.

Abstract: Surface treating water-absorbent resins with a polyquaternary amine substantially increases both the rate of water absorption and the quantity of water absorbed and retained by the resin. In addition to improved water absorbing properties, the surface-treated resins maintain the necessary "dry feel" required for most applications.

Abstract: A sterically unhindered, trifunctional primary amine is provided. This compound is useful as a crosslinking agent for a composition containing an amine-reactive polymer. Also provided is a low temperature cure composition containing the amine-reactive polymer and the trifunctional primary amine, and a crosslinked coating obtained by curing such a composition. Additionally, there is provided a process of synthesizing the novel trifunctional primary amine.

Abstract: Terpolymers of 30 to 75% by weight of maleic acid (anhydride), 5 to 60% by weight of (meth)acrylic acid and 5 to 40% by weight of (meth)acrylonitrile are suitable as retanning agents for mineral-tanned leather.

Abstract: Polymeric compositions comprised of particularly disclosed oil-soluble polymers and specific oil-soluble acrylate polymerization products are disclosed. The oil-soluble polymer (A) is a polymer selected from the group consisting of a non-aromatic mono-olefin having at least three carbon atoms, and a copolymer of the non-aromatic mono-olefin with an aromatic monoolefin, the polymer having a number average molecular weight of about 500 to about 100,000. The oil-soluble acrylate polymerization product (B) is at least one ester of the formula CH.sub.2 .dbd.C(X)--COOR wherein X is hydrogen or an alkyl or aryl group, and R is a monovalent hydrocarbyl group containing at least four carbon atoms, or an ether derivative of said hydrocarbyl group. The components (A) and (B) are preferably present in a weight ratio of (A):(B) of about 20:1 to about 1:10.

Abstract: A process for the preparation of chelation resins is disclosed. By this process, chelation resins can be prepared without the formation of large amounts of waste salt streams. In addition, novel chelation resins are prepared according to this process.

Abstract: A processor for the preparation of urea condensates and the preparation of heat-curable surface coatings.To prepare these urea condensates, primary di- and/or polyamine is reacted with urea, a secondary monoamine and a polyalcohol which contains certain groups at elevated temperatures and in the presence or absence of a catalyst, and the ammonia formed is separated off.These urea condensates are suitable as binder components in heat-curable surface coatings, in particular for heat-curable cathodic electrocoating finishes.

Abstract: Process for the preparation of soluble synthetic resins which are free from monomeric amines and have NH bonds by reaction of (A) compounds which carry epoxide groups with (B) polyamines, in which the reaction is carried out in a homogeneous phase system in the absence or presence of resin solvents, the polyamine (B) being employed in excess and the resulting reaction product being freed from the unreacted polyamine portions by circulatory distillation in the presence of a resin solvent with the addition of water and supply of heat. The synthetic resins thus prepared are employed as self-crosslinking binders and in combination with crosslinking agents or in modified form for coatings or impregnations.

Abstract: A two part impression material suitable for use as a dental impression material comprises a first part containing a product of the reaction of an alpha, beta-ethylenically unsaturated dicarboxylic acid anhydride, such as maleic anhydride, and a liquid polydiene resin, e.g. polybutadiene, and a second part containing a setting agent for the reaction product which setting agent is an alkoxylated fatty mono-amine or an alkoxylated fatty polyamine having from 2 to 30, preferably 5 to 15 moles of alkoxylate per mole of the fatty amine. The alkoxylate groups of the setting agent being one or more groups selected from the group comprising ethoxylate, propoxylate and butoxylate groups. A method of taking a dental impression using the reaction product of the first and second parts of the two part dental impression material is also disclosed.

Abstract: An absorbent article obtained by mixing 100 parts by weight of an absorbent resin powder having a carboxyl group with 0.001 to 10 parts by weight of a crosslinking agent having at least two functional groups capable of reacting with the carboxyl group per molecule and reacting the absorbent resin powder with the crosslinking agent to crosslink the molecular chains existing at least in the vicinity of the surface of the absorbent resin powder.

Abstract: An electromagnetic shielded body comprising laminating or adhering to the surface of the body or incorporating as an internal lamina of a multiple laminar body a layer of film or powder of an electroconductive material which consists of a dehydrohalogenated haloorganic polymer or copolymeric material prepared by dehydrohalogenating said haloorganic polymeric material in the presence of at least one-half mole of a liquid or solution of an amine per mole of halogen moiety in said polymeric material at from 15.degree. C. to about 250.degree. C. for from about 2 minutes to about 14 days.

Abstract: An electromagnetic shielded body comprising laminating or adhering to the surface of the body or incorporating as an internal lamina of a multiple laminar body a layer of film or powder of an electroconductive material which consists of a dehydrohalogenated haloorganic polymer or copolymeric material prepared by dehydrohalogenating said haloorganic polymeric material in the presence of at least one-half mole of a liquid or solution of an amine per mole of halogen moiety in said polymeric material at from 15.degree. C. to about 205.degree. C. for from about 2 minutes to about 14 days.

Abstract: Guayule-type resins are chemically treated with an amine terminated polyether. The polyether treated guayule resins have high softening points and usually impart improved physical properties when used as rubber additives.

Abstract: The invention pertains to X-ray contrast spherical hydrogel particles based on polymers and copolymers of acrylates and methacrylates and to a method of their preparation.The subject of this invention are X-ray contrast spherical hydrogel particles based on polymers and copolymers of acrylates and methacrylates characterized by the particles of spherical form with diameter 0.2 to 2 mm, which strongly swell in water and contain a derivative of amino-triiodobenzoic acid of general formula I, ##STR1## where R.sup.1,R.sup.2 is hydrogen, acyl group with 1 to 3 carbon atoms or alkyl with 1 to 10 carbon atoms and X is halogen, --OH or --NH(CH.sub.2).sub.n NH.sub.2, where n=1-6, covalently bonded to the polymer skeleton.

Abstract: The invention is concerned with a novel polymer addition product comprising hydrophilic polymer backbone having a molecular weight of at least about 5,000 and to which are attached amino acid containing pendants, the pendants containing at least one arginine or lysine amino acid. The polymeric compounds of the invention are highly efficient adsorbents for bilirubin and other bile pigments, as well as for bile acids such as cholic acid.

Abstract: Filled rubber vulcanizates containing aromatic furazan oxides exhibit many improved properties such as increased filler-rubber interaction and decreased hysteresis. Useful furazan oxides have both carbons of the furazan ring as part of a fused aromatic ring. Typical examples are benzofurazan oxide and its methyl and methoxy analogs. Tires made from the inventive vulcanizates show lower running temperatures and improved rolling resistance. The desirable effects of the aromatic furazan oxides may be improved by mixing the rubber, filler and furazan oxide in a conventional mechanical compounding device at specific temperatures and time periods such as about 200.degree.-400.degree. F. for 2-20 minutes.