Abstract: In ink-jet pens (10) for use with printers and plotters, an elastomeric, back-pressure bladder (12) is employed to ensure a supply of ink (14) to the printhead (16) under substantially constant pressure. Contamination of ink due to solubilization of components in the bladder by the aqueous-based ink is avoided by employing an elastomer composition essentially of a high cross-link density ethylene propylene diene monomer, carbon black as reinforcement, dicumyl peroxide on Kaolin clay as curative, and fully hydrogenated clay filtered mineral oil as plasticizer. Such elastomers are given by the composition range (in parts per hundred):______________________________________ EPDM resin 100 Carbon black 18 to 30 Curative 7.0 to 7.5 Plasticizer 20 to 25.

Abstract: Disclosed is a molecularly oriented molded body of an ultra-high-molecular-weight ethylene/.alpha.-olefin copolymer having an intrinsic viscosity (.eta.) of at least 5 dl/g and such a content of an .alpha.-olefin having at least 3 carbon atoms that the number of molecules of the .alpha.-olefin is 0.1 to 15 on the average per 1000 carbon atoms, wherein the molded body shows at least two crystal fusion endothermic peaks when the measurement is conducted in the restraint state by using a differential scanning calorimeter, the molded body has at least one crystal fusion endothermic peak (Tp) at a temperature higher by at least 20.degree. C. than the inherent crystal fusion temperature (Tm) of the ultra-high-molecular-weight ethylene/.alpha.-olefin copolymer determined as the main fusion endothermic peak at the time of the second elevation of the temperature, and the quantity of heat based on said crystal fusion endothermic peak (Tp) is at least 15% based on the total fusion heat quantity.

Abstract: The corrosion tendencies of polymers of 4-methyl-1-pentene, when combined with tris-(3,5-ditert-butyl-4-hydroxybenzyl)isocyanurate and bis-(2,4-ditert-butyl)pentaerythritol diphosphite are reduced. Optionally, metal stearates can be added to further reduce the polymer corrosion tendencies.

Abstract: The invention provides a sprayable non-aqueous composition for repelling birds and animal pests, comprising a mixture of a tacky polyolefin, a substantially pure silica-based thixotropic agent and an organic solvent or diluent.

Abstract: Excellent stabilization to bright sunlight, is obtained in polypropylene (PP) fibers pigmented with Red 144, by combining the pigment with N-(substituted)-1-(piperazin-2-one alkyl)-.alpha.-(3,5-dialkyl-4-hydroxyphenyl)-.alpha.,.alpha.-substituted acetamide ("3,5-DHPZNA" for brevity). Stabilization of the red color is obtained for as long as the PP fibers themselves are stabilized by the 3,5-DHPZNA. 3,5-DHPZNA is a known hybrid stabilizer having a hindered amine N-(substituted)-1-(piperazin-2-one alkyl) group at one end, and a hindered phenol (3,5-dialkyl-4-hydroxyphenyl) group at the other. This particular hybrid, containing a piperazinone group, combined through a disubstituted alpha carbon atom of the acetamide in a single molecule, affords the advantages of each group with respect to its stabilization of the fiber against degradation, but without the expected adverse interaction of each group with Red 144 pigment. With 3,5-DHPZNA and Red 144 pigment, essentially no secondary stabilizer is necessary.

Abstract: The inventive rubber composition comprises (a) an EPM or EPDM rubber, (b) an organopolysiloxane, (c) a finely divided silica filler and (d) a polyoxyethylene glycol having a specified average molecular weight, this last component being the characteristic ingredient. By virtue of the unique formulation, the rubber composition is outstandingly free from the troubles that the surface of a metal mold, in which the rubber composition is repeatedly molded and vulcanized with heating to give vulcanized rubber articles, becomes stained so as to necessitate frequent cleaning works for continuing the molding process so that a great improvement can be obtained in the productivity in the manufacture of rubber articles.

Abstract: Organosilicon compounds of a novel class are disclosed including .alpha.,.omega.-bis(alkoxy silyl)-substituted alkane compounds represented by the general formula(RO).sub.m (CH.sub.3).sub.3-m Si--CH.sub.2).sub.n Si(CH.sub.3).sub.3-m (OR).sub.m,in which R is a monovalent hydrocarbon group having 1 to 4 carbon atoms, e.g., methyl and ethyl, the subscript n is a positive integer in the range from 10 to 18 and the subscript m is 1, 2 or 3. The compound is useful as an additive in various kinds of synthetic resin-based compositions for the purpose of improving the properties such as flexibility, weatherability, cold resistance and mechanical strengths.

Abstract: Ziegler-Natta catalyzed polymer chains are end capped with at least one functional group-containing unit which is otherwise essentially absent from said polymer chain. The chains can be grafted to form graft copolymers and star copolymers. The compositions are useful as oil additives and in general purpose elastomer as well as thermoplastic polymer compositions.

Abstract: A composition comprises a carboxylic acid compound which contains at least three carbon atoms together with an organic sulphur-containing acid or salt of such an cid. The carboxylic acid may be an aliphatic diacid such as succinic acid. The sulphur-containing acid may be a sulphonic or sulphuric acid derivative such as the sodium salt of an alkyl sulphonic acid or of sulpho-succinic acid. The composition may be incorporated into an olefin polymer. The composition may be obtained by conventional powder blending or, for a polymer composition, melt blending techniques. Preferred polymer compositions have an increased clarity and a reduced level of haze compared to the polymer alone or the polymer containing only the carboxylic acid.

Abstract: The corrosion tendencies of polymers of 4-methyl-1-pentene, when combined with tris-(3,5-ditert-butyl-4-hydroxybenzyl)isocyanurate and bis-(2,4-ditert-butyl)pentaerythritol, diphosphite are reduced. Optionally, metal stearates can be added to further reduce the polymer corrosion tendencies.

Abstract: A hexene-1/4 methylpentene-1 random copolymer composed of 65 to 90% by weight of hexene-1 unit and 35 to 10% by weight of 4-methylpentene-1 unit and having a polystyrene-reduced number average molecular weight of 20,000 to 500,000, which copolymer is useful in applications as rubber vibration insulators, modifiers for plastics and rubbers and adhesives. Said random copolymer is produced by copolymerizing 60 to 95% by weight of hexene-1 with 40 to 50% by weight of 4-methylpentene-1 in the presence of a Ziegler-Natta catalyst comprising a transition metal component and an organometal compound component.

Abstract: The present invention provides a carrier for coating with immunologically-active material, wherein it consists of an injection molded synthetic resin with a content of adjuvant and additional materials of less than 1% by weight. The present invention also provides a carrier coated with immunologically-active material, wherein the carrier consists of synthetic resin with a content of adjuvant and additional materials of less than 1% by weight.

Abstract: The corrosion tendencies of polymers of 4-methyl-1-pentene, when combined with tris-(3,5-ditert-butyl-4-hydroxybenzyl)isocyanurate and bis-(2,4-ditert-butyl)pentaerythritol diphosphite are reduced. Optionally, metal stearates can be added to further reduce the polymer corrosion tendencies.

Abstract: Disclosed is a molecularly oriented molded body of an ultra-high-molecular-weight ethylene/polyene copolymer having an intrinsic viscosity (.eta.) of at least 5 dl/g and such a content of a polyene that the number of molecules of the polyene is 0.01 to 15 on the average per 1000 carbon atoms, wherein the molded body shows at least two crystal fusion endothermic peaks when the measurement is conducted in the restraint state by using a differential scanning calorimeter, the molded body has at least one crystal fusion endothermic peak (Tp) at a temperature higher by at least 20.degree. C. than the inherent crystal fusion temperature (Tm) of the ultra-high-molecular-weight ethylene/polyene copolymer determined as the main fusion endothermic peak at the time of the second elevation of the temperature, and the quantity of heat based on said crystal fusion endothermic peak (Tp) is at least 15% based on the total fusion heat quantity.

Abstract: Method and apparatus for the post reaction treatment of resins produced by fluidized bed polymerization of alpha olefins wherein an extruder is coupled in communication with the reactor and all necessary devolatilization of monomer, deactivation of catalysts and addition of additives are performed in the extruder.

Abstract: A vibration-damping rubber composition comprising:(A) 100 parts by weight of at least one rubber component selected from the group consisting of (a) at least one hexene-1 type polymer selected from the group consisting of hexene-1 homopolymers and copolymers of hexene-1 and a C.sub.3-20 alpha-olefin other than hexene-1 and (b) at least one graft copolymer selected from the group consisting of a graft copolymer of a hydroxyl group-containing polysiloxane or a copolymer of hexene-1 and a silane compound represented by the general formula I:CH.sub.2 .dbd.CH--(CH.sub.2).sub.n --SiR.sup.1.sub.m X.sub.3-m Iwherein n is an integer of 1 or more, m is 0 or an integer of 1-2, X is a chlorine or bromine atom, and R.sup.1 is a hydrogen atom or a C.sub.1-5 alkyl group and a graft copolymer of a hydroxyl group-containing polysiloxane on a terpolymer of hexene-1, a C.sub.

Abstract: A release sheet, comprising poly-4-methylpentene-1 film containing a copper salt of an alkanoic acid and at least one of an alkali metal halide and an alkaline earth metal halide, is disclosed. Such film is useful as a release sheet in the manufacture of printed circuit boards.

Abstract: A water-resistant support material for light-sensitive materials is disclosed, which is coated on one side or two sides with a polyolefin resin. At least the polyolefin resin of the front-side coating is a copolymer of ethylene and a non-ethylene .alpha.-olefin. This copolymer allows to add to the coating mass a high content in light-reflecting white pigment.

Abstract: A process for reducing the odor of ethylidene norbornene present in EPDM resin which comprises introducing a crystalline siliceous molecular sieve into said EPDM resin in an amount sufficient to reduce the odor produced by ethylidene norbornene present in said EPDM resin.

Abstract: An ethylene-.alpha.-olefin vulcanized rubber composition with excellent weather resistance and high transparency which is formed by vulcanizing with an organic peroxide an unvulcanized rubber composition comprising an ethylene-.alpha.-olefin rubber containing no metal oxide nor metal carbonate.

Abstract: Coherent thermoplastic aggregates with very high content of pulverized mineral materials, composed of the said materials, of polyolefin polymers and/or copolymers, and possibly also of various familiar adjuvants, characterized by the fact that, in order for them to have both a volumetric mass close to or at most equal to the theoretical volumetric mass of the pulverized mineral substances entering into their composition and an excellent compatibility with redispersion polymers, the polymers and/or copolymers entering into the composition of the said aggregates in presence of a fluidizing agent are chosen within the group of thermoplastics with melting and/or softening point at least equal to 60.degree. C. and index of fluidity at least 50 (measured according to the standard ASTM D 1238) of the polyolefin type, other than those containing a polar monomer.

Abstract: Stabilized, stereoregular polymers of branched, higher alpha-olefins can be modified with unsaturated silanes, carboxylic acids, and/or carboxylic acid anhydrides in the presence of a free radical generator in the polymer melt. These polymers can also contain additional additives, such as glass fibers.

Abstract: The invention relates to a latex of an .alpha.-methylstyrene/acrylonitrile/methacrylamide terpolyer which shows excellent stability to stirring.

Abstract: Compatible polymer blends useful as melt adhesives comprising a copolymer of butene-1 and from about 5.5 to about 20 weight percent of ethylene or propylene, a hydrocarbon tackifier and a low molecular weight liquid polybutene having a molecular weight greater than about 2000.

Abstract: 1. A heat and water tree resistant composition comprising:(a) a copolymer of ethylene and an alpha-olefin having 4 to 8 carbon atoms, said copolymer having a density equal to or less than 0.91 gram per cubic centimeter; and(b) a polyethylene glycol having a molecular weight in the range of about 1000 to about 20,000 in an amount of about 0.1 to about 20 percent by weight based on the weight of the copolymer.

Abstract: Coherent thermoplastic aggregates with very high content of pulverulent mineral materials, said aggregates comprised of the said mineral materials, further of polyolefin polymers and/or copolymers, and possibly additionally of miscellaneous known additives; characterized in that, with the aim of achieving a density near to or at most equal to the theoretical density of the pulverulent mineral materials entering into their composition, while still having excellent compatibility with the polymers of redispersion, i.e., the polymers into which the subject aggregates are to be mixed, the interparticle voids between the grains of the mineral materials, which grains are basically in contact with each other, are at most filled--in the presence of a fluidifacient agent--by at least one polyolefin polymer and/or copolymer having a fusion temperature and/or softening temperature at least equal to 60.degree. C., and having a fluidity index (ASTM 1238) of at least 50.

Abstract: The corrosion tendencies of polymers of 4-methyl-1-pentene, when combined with tris-(3,5-ditert-butyl-4-hydroxybenzyl)isocyanurate and bis(2,4-ditert-butyl)pentaerythritol diphosphite are reduced. Optionally, metal stearates and/or poly[[6-[(1,1,3,3-tetramethylbutyl)amino]-5-triazine-2,4-diyl][2,2,6,6-tet ramethyl-4-piperidyl)imino]hexamethylene[2,2,6,6-tetramethyl-4-piperidyl)im ino]] can be added to further reduce the polymer corrosion tendencies.

Abstract: A chlorosulfonated ethylene..alpha.-olefin copolymer composition is disclosed, comprising(a) 100 parts by weight of a chlorosulfonated ethylene..alpha.-olefin copolymer containing from 25 to 32% by weight chlorine and from 0.3 to 2.5% by weight sulfur,(b) from 10 to 35 parts by weight of a hydrotalcite,(c) from 0.5 to 5 parts by weight of a thiuram, and(d) from 0.5 to 5 parts by weight of a maleimide.The chlorosulfonated ethylene..alpha.-olefin copolymer of the invention provides vulcanized products having excellent heat resistance, cold resistance and water resistance.

Abstract: A resin composition is suitable for molding to a gear and comprises 30 to 98 percent by weight of a resin being capable of the anisotropic phase in the molten state and the melt processing and 2 to 70 percent by weight of fibers such as metal fibers, carbon fibers, glass fibers, inorganic fibers, synthetic fibers and mineral fibers.

Abstract: Filling compounds having plastic flow behavior for electrical components and light-wave conductors comprising (a) a non-polar, water-immiscible hydrocarbon organic liquid, (b) an organic polymeric thickening agent therefor, (c) pyrogenic silica, and when used for electrical cables or optionally for optical cables, (d) hollow micro-bodies dispersed in the filling compounds.

Abstract: A thermoplastic resin composition having excellent transparency and a high ultraviolet transmittance and free from a reddish color is obtained from a polymer or copolymer of 4-methyl-1-pentene and a blue pigment. Preferably, the composition further comprises a black pigment and/or a red pigment.

Abstract: Elastomer/filler interface agents for filled vulcanizable matrices, e.g., natural or synthetic rubber, comprise the amido reaction products of tetraethylene pentamine ("TEPA") with amide-forming organosulfur compounds.

Abstract: Fatty ethenoid acylaminoorganosilicon compounds have been found to enhance the surface properties of glass articles. The fatty ethenoid acylaminoorganosilicon compound can be applied as a coating to the glass article's surface either alone or in combination with dispersing agents and organic polymers and/or fatty acids.

Abstract: A method of regulating the coagulation characteristics of a binding agent aqueous dispersion which comprises adding thereto a compound of the formula ##STR1## in which R is an unsubstituted or hydroxy substituted alkyl or alkenyl radical,A is --O--CH.sub.2 --CH.sub.2 -- or --O--CH.sub.2 --CHOH--CH.sub.2 --,p is zero or 1,X is ##STR2## wherein r is an integer and both R.sub.x 's are hydrogen or one is a methyl or an ethyl radical and the other is a hydrogen atom,Y and Z are, independently, R--(A).sub.p --, as defined above, or a group as represented by but independent of X,m is zero or an integer 1 to 5, andn is an integer 2 to 6, the compound containing at least one group of the type represented by X, and being in free base, acid addition salt or quaternary ammonium salt form.Such modified binder dispersions are advantageous for the production of non-woven fabrics.

Abstract: A polyolefin compatable liquid colorant/additive concentrate for molding plastics. The colorants and additives are conventional pigments and additives. The vehicle contains (A) a low molecular weight addition polymer, such as a polybutene, a polystyrene, a poly alpha-methyl styrene/vinyl toluene copolymer, or an acrylic polymer or copolymer, and (B) an essentially non-volatile solvent for the low molecular weight addition polymer which has a boiling point of at least about 450.degree. F. and which is compatable with the resin to be colored. The liquid concentrate has a Brookfield viscosity between about 1000 and 40,000. The colorant concentrate produces uniform color finished products, without visible streaks or specks. It also eliminates screw slippage.

Abstract: A process for the preparation of soft porous sheets, comprises forming into a sheet a composition comprising (i) 40 to 80% by weight of an inorganic filler and (ii) 60 to 20% by weight of a polyolefin type thermoplastic elastomer composition comprising at least 50% by weight of a polyolefin type thermoplastic elastomer substantially free of a polar group, in which the tensile stress at a temperature of 25.degree. C. under 100% stretching (100% modulus) is 10 to 100 Kg/cm.sup.2, the elongation at break under stretching is at least 100% and the permanent strain under 100% stretching is less than 50% and up to 50% by weight of a thermoplastic plastomer, and stretching the sheet at a temperature lower than the softening temperature of the polyolefin type thermoplastic elastomer. A porous sheet obtained according to this process has a good combination of flexibility, air permeability and water resistance.

Abstract: Water-curable, silane modified ethylene polymers produced by reacting an ethylene polymer having a density of 0.875 to 0.930 gram per cc with a silane having an acryloxy moiety. The water-curable silane modified polymers, having improved properties, are particularly desirable as extrudates about wires and cables.

Abstract: A polyolefin compatable liquid colorant/additive concentrate for molding plastics. The colorants and additives are conventional pigments and additives. The vehicle contains (A) a low molecular weight addition polymer, such as a polybutene, a polystyrene, a poly alpha-methyl styrene/vinyl toluene copolymer, or an acrylic polymer or copolymer, and (B) an essentially non-volatile solvent for the low molecular weight addition polymer which has a boiling point of at least about 450.degree. F. and which is compatable with the resin to be colored. The liquid concentrate has a Brookfield viscosity between about 1000 and 40,000. The colorant concentrate produces uniform color finished products, without visible streaks or specks. It also eliminates screw slippage.

Abstract: Hot melt adhesives with long open time and good cold metal bonding are made of blends of an at least partially crystalline copolymer of butene-1 and ethylene, an aliphatic, substantially non-polar resin, an antioxidizing agent and, optionally, microcrystalline wax.

Abstract: A polyolefin fiber synthetic pulp having a specific Drainage Factor, Floating Factor, average diameter and Classified Fiber Length serves as an effective thixotropic agent.

Abstract: Heat storage composite consisting essentially of about 2-55% of an organic latent heat material and about 45-98% of a filled ethylene polymer.

Abstract: A diaphragm for a loudspeaker is described, which essentially consists of a polyolefin resin such as propylene homopolymer or copolymer with an ethylenically unsaturated copolymerizable monomer or a 4-methylheptene-1 resin and short fibers of potassium titanate. The titanate fibers have an average fiber length of 10 to 30 microns and an average diameter of 0.1 to 0.5 micron.

Abstract: An ethylene polymer film forming composition comprising an ethylene polymer and from about 450 to about 6000 ppm preferably 500 to 5000 ppm of metal salt of a fatty acid having from 7 to 22 carbon atoms and from about 300 to 7000 ppm preferably 500 to 4000 ppm of an antiblocking agent.

Abstract: Glycerides of higher fatty acids have been found to be effective as a discoloration inhibitor in very low concentrations for polyolefins.

Abstract: A method for determining the concentration of additives in a compounding process by measuring the capacitance and dissipation factor (tan.delta.) of the mixture and converting such values to the concentrations of the additives. This method may also be utilized to determine the concentration of the polymers in the mixture. This method is preferably applied to a compounding process of blending polyphenylene oxide and polystyrene thermoplastic resins and is preferably applied to a continuous compounding process of these resins to determine therein the concentration of an aryl phosphate ester flame retardant.

Abstract: Filled thermoplastic compositions useful, e.g., as sound-deadening sheeting for automotive carpet are obtained by blending about 5-55% by weight of ethylene/.alpha.-olefin copolymer, the .alpha.-olefin containing from 4 to 10 carbon atoms; about 2-12% by weight of plasticizer selected from the group consisting of processing oils, epoxidized oils, polyesters, polyethers and polyether esters; about 40-90% by weight of filler; and optionally elastomeric polymers.

Abstract: A microcellular low density foam of poly(4-methyl-1-pentene) which is particularly useful for forming targets for inertial confinement fusion has been developed. Articles made from the foam have been machined to tolerances of 0.0001 inch, although the densities of the fragile foam are low (about 10 to about 100 mg/cc) and the cell sizes are small (about 10 to about 30 .mu.m). Methods for forming the foam and articles are given; and the yield strength of the foam of the invention is higher than was obtained in other structures of this same material.

Abstract: The invention relates to an ethylene polymer plastic composition comprising a narrow molecular weight distribution ethylene polymer, a fatty acid amine and dibenzylidene sorbitol. A method is also provided for maintaining the effectiveness of dibenzylidene sorbitol when used to enhance the optical properties of polymer plastic compositions fabricated from resins produced using Ziegler type catalysts.

Abstract: An improved brake fluid reservoir is disclosed. The reservoir is made from polymethylpentene and includes 10-20% by weight glass fibers as an opacifying agent. A translucent reservoir is obtained which has the highly desirable feature of visibility of the fluid level in the reservoir without providing a clear view of the fluid.

Abstract: A method for reducing heat distortion but retaining high dielectric properties and volume resistivity of polymethylpentene. The method comprises dry blending chlorinated paraffin wax on mica particles and mixing so as to coat the mica particles and thereafter mixing with polymethylpentene in a blender so as not to break the mica particles or strip the wax coating therefrom. The resulting compound is then fed into an extruder at temperatures of about 325.degree. F. to 475.degree. F. The resulting material is then pelletized or strand cut.