Abstract: Blends based on vinyl-aromatic polymers endowed with high mechanical characteristics, even after successive processings at temperatures equal to or higher than 200.degree. C. and unvaried rheological properties, comprising:10 to 90% by weight of a vinyl-aromatic polymer containing from 0.5 to 5% by weight of a vinyl-aromatic monomer conjugated diene linear block copolymer and from 5 to 15% by weight of a diene rubber;5-50% by weight of a polyolefin; and5-40% by weight of a vinyl-aromatic monomer-conjugated diene star block radial copolymer, having a diene content comprised between 5 and 35% by weight; the sum of the three components being equal to 100%.

Abstract: The present invention relates to rubber-modified styrene copolymer that exhibits excellent rigidity, impact strength, external appearance and fluidity, while retaining rigidity, impact properties and external appearance, and when prepared by copolymerizing a maleimide monomer, has high heat resistance and therefore is suitable for materials for components of electric equipments, electronic equipments, automobiles and business machines.

Abstract: Hot melt construction adhesives are described which possess superior properties for the construction of disposable soft articles. The adhesive compositions include an SIS copolymer containing at least about 25% styrene, a compatible tackifying resin, a plasticizing oil and an effective amount of a stabilizer.

Abstract: Crystalline polypropylene excellent in rigidity, heat resistance and surface hardness is disclosed, having a ratio of weight average molecular weight (Mw) to number average molecular weight (Mn) (Mw/Mn) of 10 or more, an intrinsic viscosity [.eta.] of from 0.8 to 5.0 dl/g as measured in tetralin at 135.degree. C., a cold xylene-soluble content (CXS) of not more than 4% by weight, a density (d) of 0.910 g/cm.sup.3 or more as measured at 23.degree. C., and a long period (L) (.ANG.) as measured at 25.degree. C. by a small-angle X-ray scattering method satisfying relationship:L.ltoreq.LC=6667d-5894wherein d is a density at 23.degree. C.; and Lc is a value (.ANG.) obrained by equation:Lc=6667d-5894.A crystalline polypropylene composition containing the foregoing crystalline polypropylene, which is excellent in rigidity and heat resistance, is also disclosed.

Abstract: The polypropylene stretched film of the present invention is prepared by stretching a composition comprising a crystalline propylene polymer and 0.1 ppm by weight to 10% by weight of a nucleating agent, the composition having a melting point of 160.degree. C. or more, a crystallization temperature of 128.degree. C. or more and a 20.degree. C. xylene soluble portion of 3.0% by weight or less. The film has a high rigidity and a beautiful appearance as well as the characteristic properties inherent to crystalline propylene polymers. The film can be suitably used for food packaging and textile packaging.

Abstract: Statistical AB-block copolymers having improved properties, a process for their manufacture and their use. Tire treads made of the statistical AB block copolymers according to the invention are characterized by high skid resistance under wet conditions combined with persistently low abrasion, good dynamic properties and rapid vulcanization.

Abstract: An unsaturated, elastomeric ABC block copolymer comprised of the monomer units of 40 to 80% of 1,3-butadiene, 5 to 40% of isoprene and 2 to 30% of styrene, said copolymer comprising i) 40 to 75% of block A which contains styrene and butadiene units or isoprene and butadiene units with a content of distributed vinyl or isopropenyl groups of less than 15%, iia) up to 25% of a block B which contains styrene and butadiene units or isoprene and butadiene units with a vinyl or isopropenyl content of more than 70%, or iib) up to 25% of a block B' which contains styrene, isoprene and optionally butadiene units with a content of homogeneously distributed isopropenyl or vinyl groups of less than 15%, and iii) 20 to 55% of a block C which contains styrene and isoprene units and optionally butadiene units with an isopropenyl or vinyl content of more than 70%.

Abstract: An extrudable elastomeric composition includes an elastomeric polymer and a tackifying resin in which the extrudable elastomeric composition is adapted to form an elastic sheet having a stress relaxation or less than about 30 percent. The elastomeric polymer is a styrene-poly(ethylene-propylene)-styrene thermoplastic elastomeric block copolymer or a mixture of styrene-poly(ethylene-propylene)-styrene and styrene-poly(ethylene-butylene)-styrene elastomeric block copolymers. The extrudable elastomeric composition may also include a polyolefin and/or an extending oil.

Abstract: A method of making a thermoplastic elastomer composition produced by dynamic vulcanization of SBR as a dispersed phase of cross linked SBR, and a co-continuous matrix of SEBS and polypropylene. The dynamic vulcanization step takes place under conditions of shear and temperature to reach the decomposition point of crosslinked SBR, at which time the crosslinking reaction is quenched. Compositions of superior properties are achieved using this method.

Abstract: In the construction of a hard cover book or in the hinge application of a soft book cover or another graphic arts construction of this invention can be manufactured more efficiently with substantial resistance to cold flow or creep through the use of a single adhesive. The adhesive of choice for this application has an enhanced resistance to cold flow or creep, sufficiently high bond strength, and a viscosity that is controllable through a temperature range permitting it to be used for a variety of graphic arts construction applications.

Abstract: Tough transparent thermoplastics blends may be prepared by blending 10 to 99 weight percent of a block copolymer; 0.1 to 1 weight percent of particulate rubber having a particle size from 0.1 to 10 microns; and the balance a clear glassy polymer. These clear polymers are useful in a number of applications, particularly for those applications requiring quite high toughness and transparency such as packaging, containers or protective covering.

Abstract: A block copolymer composition comprising(A) a tri-branched block copolymer (I) having a molecular weight of 150,000 to 450,000 represented by the general formula(A-B).sub.3 Xwherein A represents a polymer block of an aromatic vinyl monomer, B represents a polymer block of a conjugated diene monomer, and X represents a residue of a tri-functional or tetra-functional alkoxysilane coupling agent, and the weight ratio of the polymer block A to the polymer block B is from 10/90 to 30/70,(B) a di-branched block copolymer (II) having a molecular weight of 100,000 to 300,000 represented by the general formula(C-D).sub.

Abstract: A method of improving epoxy resin compositions to provide a cured resin having improved glass transition temperature and toughness characteristics is provided. The method includes providing in an epoxy resin composition an effective amount of a substituted fluorene unit in the composition. The fluorene component acts as a chain extension agent and provides for increased glass transition temperature and less cross-link density. As a result, improved toughness occurs. In preferred applications a toughening agent is provided in the resin composition, to further enhance toughness. Preferred resin compositions, cured resins and methods of providing improved cured resins are also provided.

Abstract: A highly crystalline propylene polymer composition which is obtained by preliminarily polymerizing, in the presence of a catalyst comprising a solid titanium trichloride catalyst complex containing a complexing agent and having an aluminum content of at most 0.15 by atomic ratio of aluminum to titanium and an organoaluminum compound and optionally an electron donative compound, 3-methylbutene-1 in an amount exceeding 10 g per g of the solid titanium trichloride catalyst complex and then polymerizing propylene, or propylene and other .alpha.-olefin having from 2 to 18 carbon atoms, in an amount of at least 500 g per g of the solid titanium trichloride catalyst complex, and which contains from 0.01 to 20% by weight of the 3-methylbutene-1 polymer based on the total weight of the 3-methylbutene-1 polymer-containing propylene polymer composition.

Abstract: Thermoplastic elastomer composition characterized by excellent oil resistance while preserving high tear resistance and tension pull resistance comprises non-functionalized block copolymer of aromatic vinyl compound and conjugated diene or selectively hydrogenated product thereof (e.g. styrene-butadiene-styrene block copolymer), rubber polymer having at least one functional group selected from the group consisting of carboxyl, amino, epoxy and hydroxyl (e.g. acrylonitrile-butadiene copolymer containing a carboxyl group as a reactive functional group), and reactive aromatic vinyl polymer having a functional group which is reactive with the functional group of the rubber (e.g. reactive polystyrene containing 1% by weight oxazolinyl group when the rubber polymer is carboxyl group containing acrylonitrile-butadiene copolymer).

Abstract: Disclosed is a polymer blend having improved low-temperature impact strength comprising a copolyester of terephthalic acid, ethylene glycol and 1,4-cyclohexanedimethanol, and a styrene-butadiene block copolymer.

Abstract: The polypropylene stretched film of the present invention is prepared by stretching a composition comprising a crystalline propylene polymer and 0.1 ppm by weight to 10% by weight of a nucleating agent, the composition having a melting point of 160.degree. C. or more, a crystallization temperature of 128.degree. C. or more and a 20.degree. C. xylene soluble portion of 3.0% by weight or less. The film has a high rigidity and a beautiful appearance as well as the characteristic properties inherent to crystalline propylene polymers. The film can be suitably used for food packaging and textile packaging.

Abstract: Disclosed is a polymer blend of a copolyesterether and a styrene-butadiene copolymer, molded articles of which have improved impact strength.

Abstract: Thermoplastic molding compositions having an inherent matte or low gloss surface finish comprise a polymer blend of a polycarbonate and an emulsion grafted ABS polymer, and a low gloss enhancing amount of a poly(epoxide).

Abstract: A thermoplastic blend useful for the preparation of molded articles comprising a thermoplastic polymer and a tapered triblock elastomer of a monovinylidene aromatic monomer and butadiene having a melt index (condition 200/5.0 ASTM method D1238-82) of 0.5 to 60 and an average molecular weight from 50,000 to 135,000.

Abstract: A method for the preparation of an adhesive with an improved high temperature shear strength is disclosed. The method comprises the steps of blending a styrene homopolymer with a tackifier resin to form a resin blend and combining the resin blend with an elastomer. An adhesive with improved high temperature shear strength is also disclosed.

Abstract: An elastic fiber or film prepared from a composition comprising at least one block copolymer containing at least two polymeric blocks containing predominantly monoalkenyl aromatic hydrocarbon monomer units having a weight-average molecular weight within the range from about 4,000 to about 50,000 and at least one polymeric block containing predominantly hydrogenated conjugated diolefin monomer units having a weight-average molecular weight within the range from about 10,000 to about 200,000, a relatively low molecular weight polymer selected from the Group consisting of anionic styrene homopolymers, .alpha.-methylstyrene homopolymers, hydrogenated styrene, copolymers of .alpha.-methylstyrene and styrene and mixtures thereof and may contain a wax. In particularly preferred embodiments, the elastic fiber or film will contain at least one A-B-A triblock copolymer and an A-B' diblock copolymer.

Abstract: A primer composition usable for steel sheet and plastic sheet in vehicle bodies consists essentially of a component A composed of a resin obtained by graft-polymerizing a styrene-butadiene-styrene block copolymer or its hydrogenated polymer with .alpha.,.beta.-unsaturated carboxylic acid or its anhydride, a component B of a crosslinking agent and a component C of an epoxy compound, and has particular weight ratios as solid content of component A to component B and components A+B to component C.

Abstract: Novel polyphenylene ether compositions having good chemical resistance, tensile and impact properties are injection moldable without delamination near the gate. The preferred compositions comprise a polyphenylene ether, a high impact polystyrene, a styrene-ethylene/butylene-styrene copolymer, a poly(ethylene-co-methacrylic acid) and a poly(styrene-co-glycidyl methacrylate), and optionally polyethylene.

Abstract: A method of producing compounds in which the rubber phase contains a polyolefin and a halobutyl rubber, which is partially crosslinked, to which composition is then added additional polyolefin and a vulcanizable olefinic rubber, which is then further crosslinked using organic peroxides, and then blended with a styrenic rubber. The TPE compounds incorporate (A) polypropylene 10-90 weight parts (wt. pts.), (B) halobutyl rubber 90-10 wt. pts. (where (A)+(B)=100), (C) an olefinic rubber 10-120 wt. pts., (D) mineral oil softener 5-120 wt. pts., which are then treated thermally in the presence of (E) MOx and/or MCl, to which composition of 100 weight parts is added (F) polyolefin 100-600 wt. pts., and (G) a vulcanizable olefinic rubber 50-500 wt. pts. The resulting blend is then thermally treated with (H) organic peroxide(s), to which blend of 100 wt. pts. is then added and uniformly dispersed (I) 5-150 wt. pts. of styrenic rubber.

Abstract: Disclosed is a novel rubber composition for the treads of high-performance tires including racing tires. The elastomer component of the rubber composition consists essentially of 10-60 wt % of a low molecular weight copolymer of an aliphatic diene, e.g. butadiene, and an aromatic vinyl compound, e.g. styrene, and the balance of a conventional diene rubber such as a high styrene styrene-butadiene rubber. The copolymer is the product of solution copolymerization reaction of the aliphatic and aromatic monomers in a hydrocarbon solvent using an organic lithium compound as the initiator, and the molecular weight of the copolymer is from about 2000 to about 50000. The rubber composition provides very high road gripping ability and is sufficiently high also in rupture strength, heat resistance and wear resistance.

Abstract: Petroleum Resins particularly effective for use as tackifiers for hot melt adhesives and in tackifiers for solvent-based pressure sensitive adhesives are prepared by a processWherein (1) a C.sub.8 - and/or C.sub.9 aromatic unsaturated hydrocarbon-containing feed (optionally containing up to 18 wt. % or C.sub.4 or C.sub.5 unsaturated aliphatic hydrocarbons) is first polymerized completely and thereafter a C.sub.5 -aliphatic unsaturated hydrocarbon-containing feed is added, polymerization continued and the reactor effluent stripped to obtain the resin. The order of polymerization may be reversed.

Abstract: A molding thermoplastic, elastomeric resin composition having superior flexibility, impact resistance, mechanical strengths and moldability is provided, which composition comprises (1) a block copolymer expressed by the formula B--A--B' (wherein A is a conjugated diene polymer block and B and B' each are an aromatic vinyl compound polymer block of a specified molecular weight and are the same or different and contained in the copolymer in a specified proportion); a non-crystalline ethylene-.alpha.-olefin random copolymer; a propylene-ethylene block copolymer and/or a crystalline propylene-ethylene random copolymer; and a specified phenolic antioxidant, or (2) a specified proportion of a hydrogenated derivative of a block copolymer expressed by the formula B--A--B' wherein A, B and B' are as defined above, and having a specified solution viscosity and a specified proportion of a crystalline propylene-ethylene random copolymer having a specified flexural modulus.

Abstract: A composition for shrinkable film which excells in heat-sealability, transparency, strength, and particularly low-temperature quick shrinking property and, therefore, suits production chiefly of packaging materials, a film made of the composition and a process for the manufacture of the film are disclosed. Specifically, the composition comprises one of the specific combinations of components (A), (B) and (C), i.e. the combinations of (A)+(B), (B)+(C) and (A)+(B)+(C), wherein (A) is non-rigid polyolefine resins such as ethylene vinyl acetate, (B) is an elastomer comprising a specific ethylene- .alpha.-olefin copolymer and an elastomer consisting of block copolymer having at least one monovinyl substituted aromatic hydrocarbon polymer block and at least one polyolefin polymer block selected from at least one saturated polymer or unsaturated polymer made from mainly aliphatic conjugate diene derivative, and (C) is rigid polyolefin resins such as polypropylene.

Abstract: A butadiene-based rubber composition is disclosed, which contains not less than 20% by weight of a butadiene-based homopolymer or copolymer having a glass transition temperature (Tg) of not less than -105.degree. C., but less than -70.degree. C. and a Mooney viscosity (ML.sub.1+4, 100.degree. C.) of 10 to 150. The butadiene-based homopolymer or copolymer is obtained by polymerizing butadiene or random-copolymerizing butadiene with at least one kind of a monomer selected from the group consisting of another conjugated diene and an aromatic vinyl compound, and then reacting polymerization-active terminals thereof with an isocyanate compound and/or an isothiocyanate compound. The butadiene-based rubber composition has excellent resilience, fracture strength, and wear resistance as a vulcanizate as well as excellent processability as an unvulcanized rubber, and can be used as tire applications such as tire treads, undertreads, sidewalls, bead portions, etc.

Abstract: A PVC-free sealing compound, particularly a sealing compound for use on containers, comprising a mixture of low density polyethylene or linear low density polyethylene; a styrene-isoprene-styrene block copolymer or a thermoplastic elastomeric blend of an ethylene-propylene copolymer such as EPM or EPDM, EVA and process oil, one or more fillers such as talc, and optionally cork powder.

Abstract: A molding thermoplastic, elastomeric resin composition having superior flexibility, impact resistance, mechanical strengths and moldability is provided, which composition comprises (1) a block copolymer expressed by the formula B-A-B' (wherein A is a conjugated diene polymer block and B and B' each are an aromatic vinyl compound polymer block of a specified molecular weight and are the same or different and contained in the copolymer in a specified proportion); a non-crystalline ehtylene-.alpha.-olefin random copolymer; a propylene-ethylene block coplymer and/or a crystalline propylene-ethylene random copolymer; and a specified phenolic antioxidant, or (2) a specified proportion of a hydrogenated derivative of a block copolymer expressed by the formula B-A-B' wherein A, B and B' are as defined above, and having a specified solution viscosity and a specified proportion of a crystalline propylene-ethylene random copolymer having a specified flexural modulus.

Abstract: This disclosure relates to a process for cross-linking polymers, e.g. polyethylene, or degrading polymers, e.g. polypropylene, using peroxides having at least one carbon-carbon double bond in the molecule, e.g. 1-(t-butyl peroxy isopropyl)-3-isopropenylbenzene.Incorporation of the peroxides into the polymer may be carried out at relatively high temperatures without the risk of premature decomposition of the peroxide, thus allowing easy processability of the polymer mass prior to cross-linking or degradation. The polymeric end products obtained are odorless and do not display blooming.

Abstract: A resin composition comprising a block copolymer which comprises an intermediate block of a hydrogenated conjugated diene polymer and terminal blocks of an aromatic vinyl compound polymer, the composition being characterized in that the composition comprises:(a) 20 to 90 parts by weight of a block copolymer having terminal blocks in an amount of about 10 to about 20% by weight based on the copolymer (a), and(b) 80 to 10 parts by weight of a block copolymer mixed with the copolymer (a) and having terminal blocks in an amount of about 25 to about 35% by weight based on the copolymer (b).

Abstract: This invention provides an improvement in anionic polymerization processes which comprise both a batch polymerization step to form and partially grow living polymer chains and a subsequent continuous or semi-continuous step in which growth of the chains is continued. For purposes of this improvement, the transition to the continuous or semi-continuous step takes place before the molar concentration of monomer in the batch polymerization step is depleted to a level below that of the living chains. Anionic polymerization processes are recognized as particularly useful for the production of polymers having narrow molecular weight distributions. Practice under the invention is found to enhance the narrow distribution of the polymer product by controlling thermal die-out of chains which has occurred in conventional processes during the transition from batch to continuous or semi-continuous polymerization steps.

Abstract: A film forming dispersion for the heat sealing of dissimilar substrate said dispersion comprising at least two different types of polymers having different adhesive properties in an organic solvent system, at least one of the polymer types being fully miscible at room temperature with the organic solvent system, both of said two polymer types having an acid number ranging from 0 to 160 mg KOH per gram of polymer, and said dispersion further containing a third graft polymer containing components corresponding to said two different polymer types.

Abstract: A process for the production of a nonaqueous stable emulsion feedstock comprising a rubber, a block copolymer having at least one component miscible with the rubber and at least one component miscible with the monomer, and at least two unsaturated organic monomers capable of free radical polymerization is disclosed. At least one of the monomers must be miscible with the rubber and the mixture of the monomers is substantially a nonsolvent for the rubber. The block copolymer maintains the rubber or rubber-rich particles in emulsified form within the mixture of monomers. In general, the process comprises (1) mixing the rubber, block copolymer and at least a portion of the rubber miscible monomers to form a first nonaqueous solution, (2) mixing the remaining monomers and the remaining portion of the rubber miscible monomers to form a second solution, and (3) combining the two solutions to form the nonaqueous stable emulsion feedstock.

Abstract: A crystalline polypropylene sheet is described, characterized by containing a polymer of a vinylcycloalkane having at least 6 carbon atoms in an amount of 0.05 wt ppm to 1 wt % (calculated as a vinylcycloalkane unit). This sheet is excellent in stiffness and transparency and is suitable for use in the production of various articles such as containers and trays.

Abstract: A tire tread rubber composition exhibiting outstanding dynamic behavior and characterized in that the composition comprises as a rubber component at least 30 wt. % of an elastic styrene-butadiene copolymer prepared by solution polymerization with use of a lithium-base catalyst, the copolymer being higher than -60.degree. C. in glass transition temperature (T g) and at least 40.degree. C. in the peak mesial width of tan .delta. determined from the temperature range between the two points of intersection of the curve of tan .delta. with the line of tan .delta.=1/2a wherein a is the peak value of tan .delta. determined from a temperature-tan .delta. dispersion curve.

Abstract: A PVC-free sealing compound, particularly a sealing compound for use on containers, comprising a mixture of low density polyethylene or linear low density polyethylene; a styrene-isoprene-styrene block copolymer or a thermoplastic elastomeric blend of an ethylene-propylene copolymer such as EPM or EPDM, EVA and process oil, one or more fillers such as talc, and optionally cork powder.

Abstract: A rubber composition for treads characterized in that the composition comprises 100 parts by weight of a rubber component and 50 to 100 parts by weight of carbon black admixed therewith, the rubber component comprising 10 to 50 parts by weight of a solution-polymerized star styrene-butadiene rubber (I) having specific styrene content, vinyl content of the butadiene portion and at least 40% in the efficiency of coupling with a tin halide, 20 to 70 parts by weight of a solution-polymerized straight-chain styrene-butadiene rubber (II) having specific styrene content and vinyl content of the butadiene portion and 10 to 50 parts by weight of natural rubber or isoprene rubber (III), the carbon black being in the range of 75 to 105 in nitrogen adsorption specific surface area (N.sub.2 SA), at least 15 in the difference between N.sub.2 SA and the iodine adsorption number (IA) thereof and 0 to 5 in the difference between N.sub.

Abstract: Disclosed are copolymers of alpha methylstyrene and para methylstyrene having Ring & Ball softening points greater than 140.degree. C., a Tg of greater than 100.degree. C. to 110.degree. C., a weight average molecular weight (Mw) of less than 15,000, and a molecular weight distribution of about 2 to about 3. These copolymers are useful in adhesives, sealants and molding compounds, especially as reinforcing or modifier resins for thermoplastic block copolymers having aromatic and aliphatic blocks contained in pressure sensitive adhesives.

Abstract: Novel polyphenylene ether compositions having good chemical resistance, tensile and impact properties are injection moldable without delamination near the gate. The preferred compositions comprise a polyphenylene ether, a high impact polystyrene, a styrene-ethylene/butylene-styrene copolymer, a poly(ethylene-co-methacrylic acid) and a poly(styrene-co-glycidyl methacrylate), and optionally polyethylene.

Abstract: A telephone cord employs as an insulator for the conductors therein an extrudable blend of a styrene-ethylenebutylene-styrene copolymer with polypropylene.

Abstract: The surface of a polymer material is modified by adding to the material a block copolymer. The block copolymer has a hydrophilic polymer portion and a polymer portion which is compatible with the polymer material to be modified. The block copolymer can be easily synthesized in the presence of a polymeric peroxide and can easily and permanently modify the surface of the polymer material.

Abstract: Several important features and characteristics, particularly and pronouncedly environmental stress crack resistance (i.e., "ESCR") as well as other desirable physical properties of blends or intimate admixtures, known as "polyblends" and usually made by melt-blending, of various styrene polymers (i.e., "SP's"), notably homopolystyrene (i.e., "PS"), and thermoplastic elastomers (i.e., "TE's") are significantly and in emphasized measure enhanced by thorough incorporation in (and simultaneous or subsequent heat action-initiating and cross-link-effecting of) the styrene polymer-thermoplastic elastomer polyblend in low level concentration(s) of a thermally-activatable, organic peroxide in combination with any one (or even a mixture) of an optimizing cross-linking supplement provided in effectively reactive amounts of, for illustration, either a styrene (or the like alkenyl aromatic) monomer or a reagent that is reactive towards alkenes (such as certain dithiols, amino-derivatives, etc.

Abstract: A modified block copolymer composition comprising a thermoplastic polymer and a modified block copolymer consisting essentially of a base block copolymer of a monovinyl substituted aromatic hydrocarbon polymer block and an olefin compound polymer block having an ethylenic unsaturation degree not exceeding 20%, the base block copolymer having a molecular unit containing a carboxylic acid group and/or a group derived therefrom grafted thereto. The modified block copolymer composition of the present invention is a resinous composition excellent in impact resistance, adhesion, paint adhesion, weatherability, resistance to thermal deterioration, transparency and gloss or a rubbery or leather-like composition excellent in heat resistance, adrasion resistance, compression set resistance, adhesion, transparency, oil resistance, weatherability and resistance to heat aging.

Abstract: A resin composition is resistant to heat and impact and comprises (a) a polyphenylene ether resin, (b) a rubber graft copolymer resin obtained from a rubbery polymer having a glass transition temperature of 0.degree. C. or lower, an aromatic vinyl monomer and an alpha, beta-unsaturated dicarboxylic anhydride monomer and (c) a block copolymer of an aromatic vinyl monomer and an aliphatic diene monomer. It may contain a mono-olefinic monomer having a nitril or carboxylic ester group as the rubber graft copolymer resin.

Abstract: An adhesive for bonding cured EPDM membranes is provided comprising(A) a halogenated butyl rubber(B) a pre-cross linked butyl rubber(C) a styrene/ethylene butylene/styrene block thermoplastic rubber,(D) a thermoplastic petroleum based hydrocarbon feedstock derived aliphatic monomer resin and(E) an aliphatic isocyanate.

Abstract: A composition for shrinkable film which excells in heat-sealability, transparency, strength, and particularly low-temperature quick shrinking property and, therefore, suits production chiefly of packaging materials, a film made of the composition and a process for the manufacture of the film are disclosed. Specifically, the composition comprises one of the specific combinations of components (A), (B) and (C), i.e. the combinations of (A)+(B), (B)+(C) and (A)+(B)+(C), wherein (A) is non-rigid polyolefine resins such as ethylene vinyl acetate, (B) is an elastomer comprising a specific ethylene-.alpha.-olefin copolymer and an elastomer consisting of block copolymer having at least one monovinyl substituted aromatic, hydrocarbon polymer block and at least one polyolefin polymer block selected from at least one saturated polymer or unsaturated polymer made from mainly aliphatic conjugate diene derivative, and (C) is rigid polyolefin resins such as polypropylene.