Abstract: Tackifiers having Mn's of 5,000 or less and Tg's above 0.degree. C. are produced by combining a single site catalyst with an alpha-olefin and a cyclic monomer under conditions designed to produce low molecular weight.

Abstract: Graft copolymers which are isoolefin/para-alkylstyrene copolymer represented by the formula ##STR1## in which R and R' can be hydrogen, alkyl, and the primary and secondary alkyl halides, "a" ranges from about 14 to about 70,000, "b" ranges from 0 to about 70,000, "c" ranges from 0 to about 70,000, "d" ranges from about 1 to about 70,000, X is a halogen, and Nu is a nucleophilic residue provided by a polymeric nucleophile.

Abstract: Disclosed are a polypropylene resin composition comprising a crystalline polypropylene having a high stereoregularity and a terpene resin and a petroleum resin each having no polar group; a polypropylene stretched film formed from the polypropylene resin composition; and a polypropylene multi-layer stretched film having a base layer formed from the polypropylene resin composition and a surface layer formed from a polypropylene type polymer. The polypropylene stretched film and a polypropylene multi-layer stretched film have excellent water-vapor barrier properties and transparency, and a high Young's modulus.

Abstract: There is provided a cycloolefin polymer composition comprising 8 to 40% by weight of a cycloolefin polymer [A] and 92 to 60% by weight of a cycloolefin polymer [B], both having specific properties, wherein a difference .DELTA.n.sub.D =.vertline.n.sub.D (A)-n.sub.D (B).vertline. between the refractive index n.sub.D (A) of the polymer [A] and the refractive index n.sub.D (B) of the polymer [B] is not more than 0.015. This composition is excellent in impact resistance, transparency and heat resistance, and has a good balance of these properties.There is also provided a cycloolefin copolymer composition comprising 8 to 40% by weight of a cycloolefin elastomer component [Aa] of an .alpha.-olefin, a specific cycloolefin and a non-conjugated diene which contains a polymerizable carbon-carbon double bond; and 92 to 60% by weight of a cycloolefin copolymer component [Ba] which is obtained by copolymerizing an .alpha.

Abstract: A copolymer of a TMI/amino compound 1:1 monoadduct with ethylenically unsaturated comonomers is provided, as well as a process for producing the same. Such copolymers in and of themselves may find use as aminoplast crosslinking agents, or can readily be modified thereto. Curable compositions can be formulated from the crosslinker alone or in combination with polyfunctional active hydrogen compounds, which can be cured to produce crosslinked films and objects.

Abstract: A covulcanizable rubber composition including a partially hydrogenated unsaturated nitrile-conjugated diene copolymer having an iodine value not larger than 120, a chlorinated ethylene-propylene copolymer and a vulcanizer. The composition exhibits an improved processing property when mixed, and provides a vulcanized rubber having an improved constant-elongation fatigue resistance.

Abstract: Solution and RIM polymerization of cycloolefins containing at least one norbornene moiety is carried out in the presence of a methathesis catalyst system and an activator, particularly a chlorosilane activator, to obtain faster reaction with higher conversions at lower mold temperatures. The methathesis catalyst system includes an organoammonium molybdate or tungstate catalyst and an alkylaluminum or an alkylaluminum halide cocatalyst. The chlorosilane activator is used at a level of 0.05 to 10 millimoles per mole of the cycloolefin monomers. The polymers of cycloolefins can be impact modified and/or flame-retarded.

Abstract: Waste from stretch wrap films is recycled into non-blocking films useful as bags and liners as well as in food applications, by incorporating a polymer which contains cross-linked rubber particles, such as high impact polystyrene or an EPDM elastomer. The recycled films may include up to about 50 percent recycled stretch wrap with LLDPE and up to about 10 percent of the third polymer. The films may be single layer extrusions or multi-layer (A/B, A/B/A) coextrusions.

Abstract: A hot-melt adhesive composition containing, (A) per 10 to 80 parts by weight of a base polymer, (B) 10 to 80 parts by weight of a stickiness-imparting agent which is a copolymer of a particular styrene-type monomer and a particular indene-type monomer, the molar ratio of the indene-type monomer to the styrene-type monomer being from 99/1 to 30/70, and the weight average molecular weight of said copolymer being from 300 to 5000. The hot-melt adhesive composition exhibits excellent heat-resistant adhesiveness and heat-resistant creeping property, and has a low-molecular weight and exhibits good hue.

Abstract: Polymers of polycyclic olefins such as, for example, norbornene or tetracyclododecene, or copolymers of polycyclic olefins with cycloolefins and/or 1-olefins with a very narrow molecular weight distribution are obtained without ring opening by a polymerization in which a catalyst which is composed of an aluminoxane and of a stereorigid, chiral metallocene compound of an element of groups IVb to VIb is used, and in which the reaction is stopped at a time when the molecular weight distribution Mw/Mn of the polymer formed is <2.

Abstract: There is provided a plastisol for use in a electrically conductive molded article comprising non-conductive high polymer particles having surfaces coated with an electrically conductive high polymer or non-conductive high polymer particles having surfaces coated with filler of electrically conductive fine particles, and a plastisizer compatible with the said non-conductive high polymer. The plastisol is excellent in fluidity and good in processability. Said plastisol can provide a molded article having excellent electrical conductivity and is suited for, e.g., production of floor materials or sealing materials having low static properties and formation of an electrically conductive path.

Abstract: Rubber compositions for use in pneumatic tire treads. Specified amounts of NR and/or IR and SBR are combined with a selected class of rubber components of the formula ##STR1## SBR contains in its molecular chains one or more atomic groups of the formula ##STR2## Rebound resilience, skid resistance and fuel saving are greatly improved.

Abstract: Disclosed is a process for preparing cycloolefin random copolymer pellets, comprising adding an organic polar solvent to a solution of a copolymer obtained by copolymerizing ethylene and a specific cycloolefin and if desired an .alpha.-olefin other than ethylene, in an amount exceeding such an amount that the liquid mixture exhibits the cloud point, separating the copolymer solution utilizing phase separation phenomenon into a concentrated phase containing the cycloolefin random copolymer in a high concentration and a dilute phase containing said copolymer in a low concentration, feeding the obtained concentrated phase to an extruder where the solvents are removed and the copolymer is melted during extrusion processing, followed by pelletizing the copolymer.

Abstract: Hot-melt adhesives based upon a mixture composed of poly(vinylmethylether), greater than about 10 weight percent of a thermoplastic resin and, optionally a tackifier resin and/or extender, are found to be superior for the binding of polyolefins such as polyethylene, polypropylene, and ethylene-propylene copolymers to themselves and to other substrates. In particular, the hot-melt adhesives are useful for bonding polyethylene-backed and latex-backed carpet to polyethylene, polypropylene, or ethylene-propylene copolymer.

Abstract: Cycloolefin block copolymers, which in particular are suitable as phase promoters, are preferably obtained by copolymerization of polycyclic olefins, such as norbornene, with acyclic olefins, such as ethylene, by, at a molecular weight distribution M.sub.w /M.sub.n of the polymer block forming of less than 2, changing the reaction conditions one or more times in such a way that the monomer/comonomer ratio changes by at least 10 % or a further polymerizable monomer is metered into the monomer or the monomers.

Abstract: This composition comprises a mixture of 20 to 70 parts by weight of polynorbornene, crosslinked or uncrosslinked, 80 to 30 parts by weight of a polymer based on vinyl chloride and of at least one plasticiser customary for polynorbornene and the polymer based on vinyl chloride in an amount sufficient for reducing the glass-transition temperature of polynorbornene down to the range of rubbers. To prepare the thermoplastic composition comprising crosslinked polynorbornene, a mixture of polynorbornene, a polymer based on vinyl chloride, a plasticiser customary for polynorbornene and the polymer based on vinyl chloride and a crosslinking system is kneaded at a temperature sufficiently high and during a period sufficiently long for crosslinking polynorbornene.Applications: Manufacture of flexible tubes, seals for the construction and automobile industries, protective bellows for the automobile industry, injection-moulded articles, such as solid wheels for the toy industry, and the like.

Abstract: Disclosed herein is a process for the production of cycloolefin random copolymers comprising flash drying a solution of a cylcoolefin random copolymer in a hydrocarbon, said solution being obtained by copolymerization of ethylene and a specific cycloolefin in said hydrocarbon in the presence of a catalyst. Further proposed herein is a process for the production of cycloolefin random copolymers by copolymerization of ethylene with a specific cycloolefin of the in a hydrocarbon in the presence of a catalyst wherein said copolymerization is carried out in a polymerization reactor where a gas phase is not substantially present.

Abstract: A thermoplastic resin composition according to the present invention comprises a polymer comprising recurring units derived from a polycyclic (meth)acrylate represented by the following formula [I] and a soft polymer in the proportion by weight of the polymer to the soft polymer of 99:1 to 40:60 ##STR1## where m is 0 or a positive integer, n is 0 or 1, R is hydrogen or methyl, R.sup.1 -R.sup.18 are each independently an atom or a group selected from the group consisting of hydrogen, halogen and hydrocarbon groups, R.sup.15 -R.sup.18, linked together, may form a monocyclic or polycyclic group which may have a double bond, or an alkylidene group, p is 0 or 1, and R.sup.a and R.sup.b each independently represent a hydrogen atom or a hydrocarbon group when p is 1.

Abstract: The present invention provides a vinyl chloride resin composition having an elevated heat distortion temperature, comprising]I[ [A] a vinyl chloride resin, and[II] [B] cycloolefin ring opening polymer or copolymer formed by ring opening polymerization of a cycloolefin represented by the formula [I], or a hydrogenated product thereof, and/or[C] a cycloolefin random copolymer of ethylene and a cycloolefin represented by the formula [I], said copolymer having an intrinsic viscosity [.eta.], as measured in decalin at 135.degree. C., of 0.05 to 10 dl/g and a glass transition temperature Tg of at least 70.degree. C., ##STR1## wherein n is 0 or 1, and m is 0 or a positive integer.

Abstract: An ultra low density polyolefin foam having a density of about 0.6 to about 1.5 pounds per cubic foot comprising a heat-plastified mixture comprising (1) a non-elastomeric olefin polymer resin selected from the group consisting of ethylene homopolymers, non-elastomeric copolymers of ethylene and a copolymerizable monomer, and propylene homopolymers; (2) an elastomer in an amount of about 3 to about 30 wt. parts per 100 wt. parts of said non-elastomeric olefin polymer resin; (3) polystyrene in an amount of about 1 to about 15 wt. parts per 100 wt. parts of said olefin polymer resin; (4) a stability control agent selected from the group consisting of partial esters of long chain fatty acids with polyols, higher alkyl amines, fatty acid amides, and olefinically unsaturated carboxylic acid copolymers, and (5) a hydrocarbon blowing agent having from 1 to 6 carbon atoms and a boiling point between -175.degree. C. and 50.degree. C.

Abstract: Cold-stretched products comprising a propylene-based resin composition obtained by mixing(A) a polymer consisting mainly of propylene units, in a proportion of not more than 92% by weight and not less than 50% by weight,(B) a polymer consisting mainly of butene-1 units or an ethylene-.alpha.-olefin copolymer having a softening point of 95.degree. C. or lower, in a proportion of not more than 47% by weight and not less than 5% by weight,(C) a tackifier in a proportion of not more than 25% by weight and not less than 3% by weight, the sum of the proportions being 100% by weight; and a process for producing said cold-stretched products.

Abstract: Alloys of polycycloolefin polymers are produced by dissolving an ethylene-based functional polymer in at least one polycycloolefin monomer and polymerizing the mixture. Various polycycloolefin catalysts can be utilized. Often it is desirable to utilize bulk polymerization including reaction injection molding (RIM), liquid injection molding (LIM), reinforced reaction injection molding (RRIM), resin transfer molding (RTM), and the like. The alloys have improved properties such as impact strength, solvent resistance, as well as improved thermal aging properties such as retention of impact strength.

Abstract: A thermoplastic resin composition is prepared by blending 50-95 wt. % of a copolymer (A) of 10-75 wt. % of .alpha.-methyl styrene, 10-60 wt. % of methyl methacrylate, 5-35 wt. % of acrylonitrile and 0-20 wt. % of a monomer copolymerizable therewith; and 5-50 wt. % of a graft copolymer (B) comprising 50-85 wt. parts of a butadiene-based rubber polymer and 15-50 wt. parts of a vinyl monomer graft-polymerized onto the rubber polymer. The butadiene-based rubber polymer includes 50-98 wt. % of butadiene, 2-50 wt. % of an aromatic polycyclic vinyl monomer represented by a formula (I) below and 0-20 wt. % of a monomer copolymerizable therewith: ##STR1## wherein R denotes an optionally substituted biphenylyl or naphthyl group, and R.sub.1 denotes a hydrogen atom or a methyl group.

Abstract: Alloys of polycycloolefin polymers are produced by dissolving an ethylene-based functional polymer in at least one polycycloolefin monomer and polymerizing the mixture. Various polycycloolefin catalysts can be utilized. Often it is desirable to utilize bulk polymerization including reaction injection molding (RIM), liquid injection molding (LIM), reinforced reaction injection molding (RRIM), resin transfer molding (RTM), and the like. The alloys have improved properties such as impact strength, solvent resistance, as well as improved thermal aging properties such as retention of impact strength.

Abstract: Cycloolefin random copolymer compositions which contain a blend of at least two or three cycloolefin random copolymers are disclosed. The random copolymers are obtained by copolymerization of ethylene and at least one of two cycloolefins. The resin compositions exhibit excellent moldability and transparency, heat resistance, thermal aging resistance, chemical resistance, solvent resistance, dielectric and mechanical characteristics and transferability of the pit.

Abstract: A thermoplastic resin composition according to the present invention comprises a polymer comprising recurring units derived from a polycyclic (meth)acrylate represented by the following formula [I] and a soft polymer in the proportion by weight of the polymer to the soft polymer of 99:1 to 40:60 ##STR1## wherein m is 0 or a positive integer, n is 0 or 1, R is hydrogen or methyl, R.sup.1 -R.sup.18 are independently an atom or a group selected from the group consisting of hydrogen, halogen and hydrocarbon groups, R.sup.15 -R.sup.18, linked together, may form a monocyclic or polycyclic group which may have a double bond, or an alkylidene group, p is 0 or 1, and R.sup.a and R.sup.b each independently represent a hydrogen atom or a hydrocarbon group when p is 1.

Abstract: This thermoplastic composition with elastic memory comprises a mixture of about 5-20 parts by weight of polynorbornene which may be crosslinked, about 80-95 parts by weight of at least one polyolefin and an amount of plasticiser for polynorbornene sufficient for reducing its glass transition temperature down to the range of rubbers.According to the invention, the polyolefin chosen is a composition comprising 80 to 100% of at least one copolymer made of ethylene and at least one .alpha.-olefin chosen from propylene and 1-butene, said copolymer having a relative density between 0.850 and 0.890 and a flow index between 0.3 and 15 dg/min, and 0 to 20% of at least one polypropylene polymer.Applications: Air-tight seals, footwear parts, flexible tubes, damping elements, profiles for the construction and automobile industries, and the like.

Abstract: Cycloolefin random copolymer compositions which contain a blend of at least two or three cycloolefin random copolymers are disclosed. The random copolymers are obtained by copolymerization of ethylene and at least one of two cycloolefins. The resin compositions exhibit excellent moldability and transparency, heat resistance, thermal aging resistance, chemical resistance, solvent resistance, dielectric and mechanical characteristics and transferability of the pit.

Abstract: Alloys of polycycloolefin polymers are produced by melt blending the same with ethylene-based functional polymers. The polycycloolefin polymer can be a homopolymer, an interpolymer, or blends thereof. The alloys of the present invention have improved properties such as impact strength, solvent resistance, and melt viscosity reduction, as well as improved thermal aging properties such as retention of impact strength and melt viscosity.

Abstract: A foamable composition for producing an ultra low density polyolefin foam having a density of about 0.6 to about 1.5 pounds per cubic foot comprising a heat-plastified mixture comprising (1) an olefin polymer resin selected from the group consisting of ethylene homopolymers and copolymers of ethylene and a copolymerizable monomer; (2) an elastomer in an amount of about 3 to about 30 wt. parts per 100 wt. parts of said olefin polymer resin; (3) polystyrene in an amount of about 1 to about 15 wt. parts per 100 wt. parts of said olefin polymer resin; (4) a stability control agent selected from the group consisting of partial esters of long chain fatty acids with polyols, higher alkyl amines, fatty acid amides, and olefinically unsaturated carboxylic acid copolymers, and (5) a hydrocarbon blowing agent having from 1 to 6 carbon atoms and a boiling point between -175.degree. C. and 50.degree. C.

Abstract: An all season tire tread rubber blend comprises about 30 to 50 parts per hundred low vinyl polybutadiene; about 25 to 60 parts per hundred natural rubber and/or synthetic polyisoprene; and about 10 to 25 parts per hundred high styrene styrene/butadiene rubber and/or other diene polymer having a glass transition temperature of about -5.degree. to about -20.degree. C. A preferred embodiment comprises about 40 parts per hundred low vinyl solution polybutadiene, about 40 parts per hundred natural rubber, and about 20 parts per hundred high styrene solution styrene/butadiene. Tires employing the tire tread rubber of this invention exhibit improved wet and winter traction and superior abrasion resistance and treadwear without increased rolling resistance.

Abstract: A sheet or a film composed of at least one cyclo-olefin polymer selected from the group consisting of ring-opened polymers derived from at least one cyclo-olefin of formula (I) ##STR1## wherein R.sup.1 to R.sup.12, independently from each other, represent a member selected from the class consisting of a hydrogen atom, halogen atoms and hydrocarbon groups; two of R.sup.9 to R.sup.12 may be linked to each other together with the carbon atoms to which they are bonded to form a monocyclic or polycyclic group which may contain a double bond; R.sup.9 and R.sup.10, or R.sup.11 and R.sup.12 may each form an alkylidene group together with the carbon atoms to which they are bonded; and n is 0 or a positive integer,ring-opened copolymers derived from the cyclo-olefins of formula (I), hydrogenation products of said polymer or copolymers and addition polymers of the cyclo-olefins of formula (I) with ethylene, said cyclo-olefin polymer having an intrinsic viscosity [.eta.], measured in decalin at 135.degree. C., of 0.

Abstract: Polyolefin films for heat sealed packaging and twist wrapping are obtained by blending under high shear conditions and a rosin or resin, preferably hydrogenated to form a concentrate containing from 10 to 90 wt. %, preferably 20 to 60 wt. % of the resin or rosin and subsequently blending the concentrate with a and extruding the resultant blend to form a film.

Abstract: A flame retardant cyclic olefinic polymer composition which comprises[A](a) a cyclic olefinic random copolymer formed from an ethylenic component and a cyclic olefinic component represented by the following general formula [I], or(b) a ring-opened polymer of a cyclic olefinic component represented by the following general formula [I] or a hydrogenated derivative of the polymerwhich copolymer or polymer has a limiting viscosity [.eta.] of 0.01 to 10 dl/g measured in decalin at 135.degree. C. and a softening temperature (TMA) of 70.degree. C. or more; ##STR1## [B] a halogen type flame retardant, [C] an antimony type flame retardant, and[D] polytetrafluoroethylene, and if desired[E] at least one copolymer selected from the amorphous or low crystalline alpha-olefinic copolymer which is formed from at least two alpha-olefins, and an amorphous or low crystalline copolymer which contains as one of monomer constituents styrene or its derivative and has at least one of glass transition temperatures of 0.degree. C.

Abstract: The invention relates to a polynorbornene-based rubbery composition with improved thermal behaviour, comprising a mixture of at least 50% by weight of polynorbornene and not more than 50% by weight of another rubber, the said mixture having been vulcanized by means of effective quantity of at least one compound: ##STR1## where R.sub.1, R.sub.2 =CH.sub.n X.sub.3-n, with X=F, Cl or Br and n = integer from 0 to 2; the invention also relates to a thermoplastic composition comprising 10-90 parts by weight (pw) of at least one olefin-based crystalline polymer (A), from 90-10 pw of a mixture (B) of at least 50% by weight of polynorbornene and not more than 50% by weight of another rubber, and a sufficient quantity of plasticiser for polynorbornene to lower its glass transition temperature to the range of rubbers, the sum of (A) and of (B) being equal to 100 pw and (B) being vulcanized by means of an effective quantity of at least one compound (I).

Abstract: Disclosed herein is a process for the production of cycloolefin random copolymers comprising flash drying a solution of a cylcoolefin random copolymer in a hydrocarbon, said solution being obtained by copolymerization of ethylene and a specific cycloolefin in said hydrocarbon in the prsence of a catalyst. Further proposed herein is a process for the production of cycloolefin random copolymers by copolymerization of ethylene with a specific cycloolefin of the in a hydrocarbon in the presence of a catalyst wherein said copolymerization is carried out in a polymerization reactor where a gas phase is not substantially present.

Abstract: A thermoplastic composition is provided which comprises a blend of a thermoplastic such as a copolymer of styrene and maleic anhydride and a modified elastomeric component such as EPM or EPDM which has been modified with a primary amine functional monomer, such as a 2-amino-5-norbornene. The composition has improved impact strength.

Abstract: A process for preparing a blend of a norbornene polymer and a vinyl polymer, the process comprising (a) injecting into a mold a reaction mixture comprising from about 30 to about 70 weight percent, based on the total monomer weight, of at least one substituted or unsubstituted norbornene monomer, from about 70 to about 30 weight percent of at least one polymerizable monomer, a metathesis catalyst system comprising a transition metal catalyst and a cocatalyst, and a free radical initiator, and (b) subjecting the reaction mixture to temperature conditions to sequentially initiate polymerization of the norbornene monomer and the vinyl monomer.

Abstract: Compositions comprising a mixture of 20 to 30 parts by weight of polynorbornane, 80 to 30 parts by weight of a crystalline olefin-based polymer and a quantity of plasticizer for polynorbornane sufficient to lower its glass transition temperature to the range of rubbers. The crystalline olefin-based polymer is a polymer or mixture of polymers comprising 5 to 100 weight percent of a copolymer of ethylene and at least one alkyl acrylate the group of which contains 1 to 8 carbon atoms, said copolymer having a melt flow rate between 0.1 and 20 dg/min. and 0 to 95 weight percent of a copolymer of ethylene and at least one .alpha.-olefin containing at least 3 to 10 carbon atoms, said copolymer having a density between 0.89 and 0.93, a crystallinity between 15 and 50% and a melt flow rate between 0.5 and 15 dg/min. The composition of the invention is prepared by mixing a mixture of polynorbornane, plasticizer, ethylene/acrylate copolymer, crosslinking system and, if necessary, ethylene/.alpha.

Abstract: Molding materials of high impact polystyrene (HIPS) and one or more further polymers as essential components contain, as a third or further compatibility-imparting component, a polymer or copolymer containing not less than 45% by weight of units of cyclohexyl (meth)acrylate.

Abstract: A predominately naphthenic-aromatic hydrocarbon composition characterized by a content of about 5 to about 50 parts per weight of indene cumarone resins and about 50 to about 95 parts per weight of a mineral oil cut having a boiling range between approximately 200.degree. C. to 600.degree. C. and by a PCA content of less than 0.01%.

Abstract: This invention concerns biaxially oriented polypropylene films containing from 1 to 40 percent by weight of a hydrocarbon resin, the resin being substantially miscible with the polypropylene, and the film having a crease retention of at least 50% as measured by ASTM D920-49. The hydrocarbon resin is preferably a terpene resin, a hydrogenated synthetic resin or a compatible rosin. Crease retention values in excess of 70% have been achieved in particular by orienting the films at a temperature of at least 10 Centigrade degrees below the crystalline melting point of the polypropylene.

Abstract: A sanitary rubber composition or article comprising a synthetic rubber prepared by solution polymerization and a fine powder of polyethylene having a molecular weight of 1.times.10.sup.6 to 1.times.10.sup.9 and having excellent chemical and physical properties is described.

Abstract: Hot-melt adhesives based upon a mixture composed of poly(vinylmethylether), greater than about 10 weight percent of a thermoplastic resin and, optionally a tackifier resin and/or extender, are found to be superior for the binding of polyolefins such as polyethylene, polypropylene, and ethylene-propylene copolymers to themselves and to other substrates. In particular, the hot-melt adhesives are useful for bonding polyethylene-backed and latex-backed carpet to polyethylene, polypropylene, or ethylene-propylene copolymer.

Abstract: Syndiotactic homopolymers of an arylcyclobutene functional monomer and syndiotactic copolymers of an arylcyclobutene functional monomer and a vinylaromatic monomer are prepared by conducting the polymerization in the presence of a catalytic amount of a suitable coordination catalyst such as the reaction product of polymethylaluminoxane and a transition metal compound.

Abstract: In electrically conducting polymers in their oxidized (doped) form, which are known per se, the anions can be exchanged in any desired manner, if the polymer in solution is brought into contact with a salt containing the anion to be exchanged and the solution equilibrium is established, taking account of the solubility product of the salts present. In this manner, the properties of the electrically conducting polymers can be adapted to different purposes.

Abstract: The present invention provides a resin composition comprising:(a) a polyolefin resin in an amount of 20-95% by weight,(b) a polyphenylene ether resin in an amount of 80-5% by weight,(c) a partially hydrogenated alkenyl aromatic compound-isoprene block copolymer in an amount of 3-45 parts by weight based on totally 100 parts by weight of the components (a) and (b), and(d) an ethylene-.alpha.-olefin copolymer elastomer modified by grafting thereon a graft monomer such as an unsaturated monocarboxylic acid or a derivative thereof, an unsaturated dicarboxylic acid or a derivative thereof, a styrene compound, or an unsaturated epoxy compound or an .alpha.-olefin-alkyl (meth)acrylate copolymer such as a copolymer of an .alpha.-olefin of 2-6 carbon atoms and an alkyl (meth)acrylate having an alkyl group of 1-8 carbon atoms in an amount of 3-45 parts by weight based on totally 100 parts by weight of the components (a) and (b).

Abstract: Disclosed is a hot-melt adhesive composition comprising (a) 20 to 70 parts by weight of a vinyl aromatic compound/conjugated diene copolymer or a hydrogenation product thereof, (b) 30 to 80 parts by weight of an alicyclic hydrocarbon resin tackifier, the total amount of the components (a) and (b) being 100 parts by weight, and (c) 0.3 to 20 parts by weight of a random copolymer of a cyclic olefin and ethylene.

Abstract: A hot melt adhesive consisting essentially of amorphous polypropylene, styrene-based themoplastic elastomer, tackifier and wax having a dissipation factor of about 0.010 or less at 1 kilohertz at 23.degree. C., and a volume resistivity of at least about 1.times.10.sup.14 ohm-cm at 23.degree. C. Such adhesives exhibit good shear strength and shock resistance.

Abstract: A polypropylene-based resin composition consisting essentially of 60-98% by weight of a polypropylene-based resin selected from the group consisting of (i) homopolypropylene, (ii) a crystalline random copolypropylene and (iii) a mixture of homopolypropylene and a crystalline random copolypropylene, 1-30% by weight of a petroleum resin, and 1-20% by weight of a low-crystalline or amorphous ethylene-.alpha.-olefin copolymer having a refractive index of from 1.480 to 1.505 at 25.degree. C., and when said polypropylene-based resin is a crystalline random copolypropylene or a mixture of a homopolypropylene and a crystalline random copolypropylene, said ethylene-.alpha.-olefin is an amorphous copolymer.