Abstract: The invention relates to opaque synthetic resins containing 1 to 30% by weight of cross-linked beads consisting of a polymer comprised of:(i) 9.9 to 59.9% by weight of at least one radically polymerizable monomer A containing an aromatic residue or nonaromatic monomers A' which contain a halogen;(ii) 90 to 40% by weight of vinyl monomers B which are copolymerizable with these monomers but different from them;(iii) 0.1 to 20% by weight of at least one cross-linking monomer V and(iv) 0 to 10% by weight of a strongly polar monomer Hand where (a) the refractive index of the polymer is higher than that of the polymer matrix and that (b) the average bead size of the beads is in the range of 20 to 50 microns.

Abstract: Polymer blend compositions exhibiting good antistatic properties and ductility comprise a styrenic polymer, an epihalohydrin copolymer and an acrylate polymer present in an amount sufficient to effect compatability of the styrenic polymer and the epihalohydrin polymer as compared with a blend of the styrenic polymer and the epihalohydrin copolymer not including the acrylate polymer. In a more specific embodiment the polymer blend compositions comprise from about 40 to about 96 percent by weight of a styrenic polymer, from about 2 to about 50 percent by weight of an epihalohydrin copolymer, and from about 2 to about 50 percent by weight of an acrylate polymer.

Abstract: An agent to be used to treat water and aqueous media contacting heat transfer surfaces for inhibiting the build-up of scale and settlement of dissolved alkaline earth materials in water and aqueous media, which agent consists of acrylic and methacrylic acid polymers and/or copolymers and is characterized in that it comprises the fraction of said polymers and/or copolymers having a symmetrical, single-mode molecular weight distribution centered on an average molecular weight of about 800, in which 100% of said molecular weights are individually lower than 1,200 and at least 90% of same are in the 400-1,000 range.

Abstract: Soft, resilient thermoplastic compositions with good physical strength useful as molded parts including hoses, seals and gaskets which exhibit good flow and good surface characteristics in injection molded parts. The compositions comprise ethylene copolymer resin (e.g., ethylene vinyl acetate), halogenated butyl rubber and polychloroprene wherein the rubbers have been dynamically vulcanized to a fully cured state in the presence of the ethylene copolymer resin.

Abstract: Compatible polymer mixtures of a polymer component which contains cyclohexyl (meth)acrylate as a monomer and a polymer component which contains .alpha.-methyl styrene as a monomer.

Abstract: The present invention provides adhesive compositions with strong and firm adhesion to various kinds of synthetic rubbers including polyolefin-type vulcanized rubbers and to various kinds of synthetic resins including polyolefin-type synthetic resins and vinyl chloride resins. The present adhesive compositions comprise a mixture of a chlorinated rubber, an acrylic polymer, a Lewis acid and an organic solvent or a mixture of a chlorinated rubber, an acrylic polymer, a terminal functional group-containing hydrocarbon-type polymer and an organic solvent.

Abstract: A composition of matter comprising a blend of CPVC having a chlorine content of between about 60% and 66% by weight and a polymethylmethacrylate content of between about 0% and 80% by weight of the blend. The composition of matter displays substantially single, homogeneous phase behavior with the CPVC and polymethylmethacrylate being substantially or completely miscible. Blending of CPVC and polymethylmethacrylate provides a reulting blended polymeric material having enhanced temperature and durability properties. Melt processability of CPVC polymeric material may be enhanced by the inclusion of polymethylmethacrylate to form the blends.

Abstract: A composition comprising:(a) at least one copolymer having at least one of M.sub.w /M.sub.n less than 2 and M.sub.z /M.sub.w less than 1.8; and(b) at least one plastic composition.The composition can be produced by preparing the elastomer and then blending it with the plastic. The composition can be subjected to an additional step of curing.

Abstract: A thermoplastic pelletizable polymer composition comprising an oligomer or degraded polyolefin and an olefinic elastomer. Optionally, the composition can also include a polyolefin thermoplastic polymer. The composition, when converted to a film or fabric meets the criteria or drapability, low hardness on the Shore A scale, high melt flow and reprocessability.

Abstract: Composite resin particles each comprising a particulate crosslinked polymer to which a number of substantially linear, metal-containing polymer chains are chemically bonded. The invention also provide methods for the preparation of said composite resin particles. The present composite resin particles have self-film forming properties, can give a stable dispersion in an organic solvent or a resinous varnish and are specifically useful in paint industries. The particles are further characterized by having the desired properties of the metal element contained therein, as, for example, self-catalytic function in crosslinking, excellent biological activities and the like.

Abstract: Disclosed are compositions which are blends of vinylidene chloride-vinyl chloride copolymers with certain indene or 3-methylindene containing polymers.

Abstract: A curable chlorinated polyethylene and copolyethylene composition comprising(A) 5 to 95% by weight, based on the total weight of (A) and (B), of a chlorinated polyethylene having a chlorine content of about 20 to about 50% by weight and derived from polyethylene having a melt index of 0.01 to 100,(B) 95 to 5% by weight, based on the total weight of (A) and (B), of a chlorinated copolymer of ethylene and a C.sub.2 -C.sub.5 alkyl acrylate or methacrylate, said copolymer having a chlorine content of about 2 to about 45% by weight and a melt index of 0.1 to 100,(C) 0 to 30 parts by weight, per 100 parts by weight of (A) and (B) combined, of an epichlorohydrin polymer or copolymer at least 40 mole % of which is derived from the epichlorohydrin, said polymer or copolymer having a specific reduced viscosity of 0.1 to 10 dl/g,(D) 0.1 to 5 parts by weight, per 100 parts by weight of (A), (B) and (C) combined, of a mercaptotriazine compound as a crosslinking agent,(E) 0.

Abstract: A vulcanizable elastomer composition comprising an .alpha.-olefin copolymer comprising ethylene and an .alpha.-olefin(s) and an ethylene copolymer comprising ethylene and at least one member selected from the group consisting of acrylic and methacrylic esters, which has an excellent roll-processability and gives by vulcanization an elastomeric material having well-balanced properties in respect of resistance to heat and oil, low-temperature property and the like.

Abstract: Polyblend interdispersions of two or more different polymers formed at least partially in the presence of an interdispersing aid which can be polytetrafluoroethylene or ultra high molecular weight polyethylene; said blend can be chemically cross-linked with peroxides.

Abstract: A nonwoven web is prepared from a polymeric blend comprising at least one elastomer and at least one thermoplastic resin. The nonwoven web comprises fibers produced by melt blowing the polymeric blend. Conventional techniques are used to accomplish the melt blowing but due to high viscosity of certain elastomers it is frequently necessary to degrade the polymer blend prior to melt blowing. The nonwoven web exhibits improved extensibility, texture and hand.

Abstract: A rubber composition comprising a crosslinked blend containing a mixture of from 50 to 95% by weight of an acrylic elastomer and from 5 to 50% by weight of polyethylene is disclosed. The composition has improved resistance to fuel oil, particularly alcohol-added gasoline, as well as cold temperature resistance and heat resistance, and is, therefore, useful as a fuel oil resistant material.

Abstract: A melt processible multi-phase thermoplastic composition comprising a blend of:(A) 15-75 parts by weight of a crystalline polyolefin resin comprising polymerized monomer units of ethylene or propylene or mixtures thereof forming the continuous phase of the composition, and(B) 25-80 parts by weight of a crosslinked elastomer of an ethylene/alkyl acrylate copolymer consisting essentially of units derived from ethylene, an alkyl ester of acrylic acid wherein the alkyl group contains 1-6 carbon atoms and a monoalkyl ester of 1,4-butenedioic acid wherein the alkyl group contains 1-6 carbon atoms forming the discontinuous phase of the composition.

Abstract: A thermoplastic elastomer composition prepared by partially crosslinking a composition comprising the following components (A), (B), (C) and (D):(A) 10-40% by weight of an ethylene/.alpha.-olefin copolymer prepared by copolymerizing ethylene and an .alpha.-olefin having 3 to 12 carbon atoms in the presence of a catalyst comprising a solid component and an organoaluminum compound which solid component contains at least magnesium and titanium, said ethylene/.alpha.-olefin copolymer having the following properties (I) to (IV):(I) Melt index: 0.01-50 g/10 min(II) Density: 0.860-0.910 g/cm.sup.3(III) Maximum peak temperature as measured according to a differential scanning calorimetry (DSC): not lower than 100.degree. C.(IV) Insolubles in boiling n-hexane: not less than 10 wt. %(B) 15-35% by weight of a propylene polymer;(C) 10-40% by weight of an ethylene/.alpha.

Abstract: A polymer composition obtained by mixing, in an emulsion state,(A) from 20 to 90% by weight (as solid content of polymer) of an emulsion of polymer component (A) which is a polymer of a vinyl monomer and has a glass transition temperature of higher than 20.degree. C., a gel content of not higher than 10% and a solubility parameter of from 8.0 to 11.0 (cal/cc).sup.1/2 and which has a weight average molecular weight, based on polystyrene, of at least 1.5.times.10.sup.5, and(B) from 10 to 80% by weight (as solid content of polymer) of an emulsion of polymer component (B) which is a homopolymer of an acrylate monomer, a copolymer of acrylate monomers or a copolymer of an acrylate monomer with other copolymerizable monomer and has a glass transition temperature of not higher than 20.degree. C., a gel content of not higher than 70% and a solubility parameter of from 8.4 to 9.8 (cal/cc).sup.1/2,and separating the polymer from the emulsion mixture.

Abstract: Miscible blends of solids, non-crosslinked polymers are disclosed. The blends comprise from 2 to 95 parts by weight of a water-insoluble, hydrophobic polymer and, correspondingly from 98 to 5 parts by weight of a hydrophilic polymer. The blends are capable of absorbing at least their own weight in water.

Abstract: A thermoplastic resin composition obtained by graft-polymerizing 95 to 50 parts by weight of a monomer mixture comprising a vinyl aromatic compound monomer and an acrylic compound monomer and optionally a vinyl cyanide compound monomer in the presence of 5 to 50 parts by weight of a rubbery substance consisting of styrene-butadiene copolymers, characterized in that the rubbery substance comprises (A) 40 to 80% by weight of a styrene-butadiene copolymer having a number-average particle diameter of at least 0.05 .mu.m and less than 0.2 .mu.m, a gel content of 30 to 100% by weight and a bound styrene content of 10 to 40% by weight and (B) 60 to 20% by weight of a styrene-butadiene copolymer having a number-average particle diameter of 0.2 to 3 .mu.m, a gel content of 10 to 80% by weight and a bound styrene content of 10 to 40% by weight and the total content of the components (A) and (B) in the rubbery substance is at least 80% by weight.

Abstract: This invention relates to a heat-shrinkable film consisting essentially of a blend of 99.5-98.5 weight % of linear low or medium density polyethylene and 0.5-1.5 weight % of one or more copolymers of ethylene with a monomer selected from vinyl acetate and acrylic acids or esters, where said film has been cross-linked to the degree induced by an irradiation dosage of about 1 to 5 megarads.

Abstract: An aqueous wax dispersion for floor care contains a mixture of an aqueous secondary dispersion of an ethylene copolymer wax, having a specific MFI, and an aqueous primary dispersion together with plasticizers, leveling agents and water, and an ethylene copolymer wax in the form of an aqueous secondary dispersion is used for floor emulsions.

Abstract: Vinyl chloride polymer (PVC) composition especially suitable for calendering which comprises PVC, at least one copolymer of an alkyl (meth)acrylate (preferably n-butyl acrylate) and alpha methyl styrene of low molecular weight (10,000 to 100,000) achieved by performing the copolymerization in the presence of a chain transfer agent, particularly cyclohexene, and which composition optionally contains a processing aid, and wherein the PVC and said at least one alkyl (meth)acrylate copolymer are admixed by performing the VC polymerization process to produce the PVC in the presence of the alkyl (meth)acrylate copolymer.

Abstract: A vibration-damping resin composition of the invention comprises 10 to 95% by weight of an amorphous thermoplastic resin polymer (a) and 90 to 5% by weight of a crystalline thermoplastic polymer (b) incompatible with the polymer (a). The polymer (a) has a glass transition temperature lower than that of the polymer (b) and a maximum tan.delta. of 0.5 or more within a predetermined temperature and frequency range. The polymer (b) has a melting point higher than the glass transition temperature of the polymer (a) and a shear storage modulus of 1.times.10.sup.8 dyne/cm.sup.2 or more at the temperature and frequency at which the polymer (a) exhibits the maximum tan.delta..

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 skin adhesive coated sheet material is provided which is coated with a polymer that exhibits an enhanced level of initial adhesion when applied to skin but resists objectionable adhesion build up over time. The skin adhesives are comprised of a macromer reinforced acrylate copolymer which has a creep compliance value at least about 1.2.times.10.sup.-5 cm.sup.2 /dyne. A stable chemical complex of iodine, iodide and a pressure-sensitive adhesive is also provided wherein the adhesive has a creep compliance value of at least about 1.0.times.10.sup.-5 cm.sup.2 /dyne measured when the adhesive composition is substantially free of iodine.

Abstract: Disclosed is a multicomponent resin composition which is essentially a blend of three polymers, each of which may be a copolymer, and undergoes a change in light transmittance and color with temperature. The first and second polymers are chosen in combination such that a blend thereof exhibits a phase diagram in which a lower critical solution temperature appears, and the third polymer is one which has mutual solubility, at least partially, with either or both of the first and second polymers. For example, polymethyl methacrylate and a copolymer of vinylidene fluoride and hexafluoroacetone, as the first and second polymers, and polyvinyl acetate are blended together. The phase separation temperature or coloring temperature of the multicomponent resin composition depends on the amount of the third polymer, and opacifying and coloring of the resin composition caused by heating become irreversible by cooling when the amount of the third polymer is sufficient.

Abstract: A process is provided for affixing to a substrate a non-tacky, flexible layer consisting of a raw polymer mixture of a minor proportion of high density polyethylene, linear low density polyethylene or isotactic polypropylene and a major proportion of elastomeric polymer of which at least about 50 percent by weight is butyl rubber, by applying a stretching elongation to the flexible layer before application to the substrate. The process may be used in a wide variety of applications, for example, to cover metal parts, make repairs to cracked cover components and electrical wiring splicing and to repair leaks in pipes or hoses.

Abstract: A melt processible thermoplastic composition comprising a blend of:(A) 15-75 parts by weight of a crystalline polyolefin resin comprising polymerized monomer units of ethylene or propylene or mixtures thereof, and(B) 25-80 parts by weight of a crosslinked ethylene/alkyl acrylate elastomer made from dynamically crosslinking an ethylene/alkyl acrylate/monoalkyl ester of 1,4-butenedioic acid copolymer containing about 60-90 weight percent ethylene and wherein the alkyl group of the alkyl acrylate contains 1-6 carbon atoms, the dynamically crosslinked elastomer being dispersed throughout the crystalline polyolefin resin.

Abstract: The invention relates to a process for the production of molding compositions from a thermoplastic polycondensation resin susceptible to degredation at high temperature in the presence of H.sub.2 O, to which is admixed a second synthetic resin, present as an aqueous latex, at temperatures in the range of 150.degree.-300.degree. C. and under a pressure in the range of 1-100 bar under the effect of high shear forces, for a time sufficient to provide the desired molding composition without substantially degrading the polycondensation resin.

Abstract: Disclosed herein are a polypropylene resin composition comprising 100 parts by weight of propylene homopolymer showing a stereoregularity of a boiling heptane-insoluble part thereof of not less than 0.960 as an isotactic pentad rate obtained by .sup.13 C-NMR and 0.01 to 2 parts by weight of a hydrocarbon polymer having completely or partially saturated main hydrocarbon chain and at least one hydroxy group at an end of the main hydrocarbon chain, and a biaxially stretched film comprising the polypropylene resin composition.

Abstract: A crosslinked polyvinyl chloride resin composition comprising:A: a polyvinyl chloride resin,B: at least one copolymer selected from the group consisting of ethylene/acrylic acid copolymers, ethylene/alkyl acrylate copolymers and ethylene/alkyl methacrylate copolymers, andC: a polyolefin resin and having a high expansion ratio, and a foam sheet prepared from the composition.

Abstract: A low smoke and flame retardant composition comprising an acrylate rubber and a polyolefin resin compatibilized with aluminum trihydrate. The composition can be made by dynamically partially curing blends of acrylate rubber and polyolefin resin with compatibilizing amounts of aluminum trihydrate to yield a thermoplastic elastomer with improved properties at elevated temperatures. The acrylate rubber can comprise an acrylate ester polymer or a copolymer of acrylate ester with ethylene. The polyolefin resin is preferably a high molecular weight polymerization product of either ethylene or propylene, preferably propylene.

Abstract: A skin adhesive coated sheet material is provided which is coated with a polymer that exhibits an enhanced level of initial adhesion when applied to skin but resists objectionable adhesion build up over time. The skin adhesives are comprised of a macromer reinforced acrylate copolymer which has a creep compliance value at least about 1.2.times.10.sup.-5 cm.sup.2 /dyne.

Abstract: A resin composition is disclosed which comprises a blend of from about 40 to about 95 percent by weight thereof of a first polymeric component and from about 50 to about 5 percent by weight thereof of a second polymeric component, the blend being characterized by an interior region containing a disproportionately higher content of first polymeric component and an exterior region containing a disproportionately higher content of second polymeric component, the first polymeric component being selected from the group consisting of amorphous homopolymer of styrene or lower alkyl substituted styrene and amorphous copolymer of styrene and/or alkyl substituted styrene containing up to about 40 weight percent thereof of at least one other olefinic monomer copolymerized therewith and the second polymeric component being selected from the group consisting of crystalline homopolymer of propylene and crystalline copolymer of propylene containing up to about 30 weight percent thereof of at least one other olefinic monomer

Abstract: A vinyl chloride resin composition with a yield stress of 1 to 5 g/mm.sup.2, composed of(A) 100 parts by weight of a vinyl chloride resin containing 0 to about 20% by weight of a comonomer,(B) about 10 to about 80 parts by weight, per 100 parts by weight of the resin (A), of (B-1) a liquid polyester plasticizer having a number average molecular weight (Mn) of not less than about 1,500 and 0 to about 10 parts by weight, per 100 parts by weight of the resin (A), of (B-2) a plasticizer for the resin (A), which is other than said plasticizer (B-1), and(C) about 0.2 to about 200% by weight, based on the total weight of said plasticizers (B-1) and (B-2), of a low-molecular-weight acrylic or methacrylic resin having a number average molecular weight (Mn) of about 1,500 to about 50,000 and being solid at 23.degree. C.

Abstract: A vinyl polymer composition comprising a vinyl polymer, a heat stabilizer, an impact modifier and an ethylene-vinyl acetate copolymer having improved impact resistance is disclosed. A process for forming the vinyl polymer composition is also set forth. In this process an improved processing aid, an ethylene-vinyl acetate copolymer, is blended with a vinyl polymer, a heat stabilizer and an impact modifier.

Abstract: A vinyl chloride polymer resin composition having excellent processability and flowability is comprised of (A) 100 weight parts of a vinyl chloride polymer composition comprising 5 to 100 weight % of a vinyl chloride polymer having an average polymerization degree of 300 to 700 and 95 to 0 weight % of a vinyl chloride polymer having an average molecular weight higher than 700, and (B) 0.1 to 30 weight parts of a methyl methacrylate polymer comprised of at least 40 weight % of methyl methacrylate and having a reduced viscosity (.eta.sp/C) of 0.1 to 2 l/g.

Abstract: Films or sheets are fabricated from blends of an ethylenic polymer or copolymer, a butene-1 polymer or copolymer, and a propylene polymer or copolymer which result in improved optical clarity, heat seal strength and peel seal characteristics.

Abstract: This invention relates to thermoplastic moulding compositions of vinyl chloride polymers, certain graft polymers, certain resin-like copolymer additives and certain rubber-like copolymers for the production of films having improved resistance to ageing.

Abstract: Polymeric compositions are described which comprise a mixture of(A) at least one oil-soluble polymer which is a homopolymer of a non-aromatic monoolefin or a copolymer of said non-aromatic monoolefin with an aromatic monoolefin, and(B-1) at least one nitrogen-containing ester of a carboxy-containing interpolymer, and/or(B-2) at least one oil-soluble acrylate polymerization product of at least one acrylate ester, or a mixture of one or more of (B-1) and (B-2). The polymeric compositions of the invention also may contain (C) an effective amount of at least one viscosity-reducing liquid organic diluent such as a naphthenic oil or an alkylated aromatic material.

Abstract: Heat shrinkable thermoplastic compositions are prepared by blending an ethylene copolymer resin with a rubber and dynamically vulcanizing the rubber. The ethylene copolymer resin is a copolymer of ethylene with an alkyl ester of an alpha, beta monoethylenically unsaturated monocarboxylic acid as well as copolymers of ethylene with the acid per se. The preferred copolymer is ethylene-vinyl-acetate copolymer. The preferred rubber is halogenated butyl rubber. Uncured rubber can be included in the composition.

Abstract: A molding composition which is essentially composed of a mixture of at least two polymers based on vinyl chloride and at least one water-soluble surfactant is described. One of the polymers is a sinterable vinyl chloride/alkyl acrylate copolymer which can contain, in addition, polymerized units of vinyl acetate and ethylene. At least one further polymer is a vinyl chloride polymer which can contain up to 5% by weight of polymerized units of vinyl acetate and ethylene. The molding composition is suitable for the production of sintered, porous, flexible moldings, in particular separator compartments for electric cells.

Abstract: A composition comprising from 2 to 25 weight percent of at least one free radical ethylene polymer with a specific gravity between 0.91 and 0.94, and from 75 to 98 weight percent of at least one copolymer of ethylene and at least one .alpha.-olefin containing at least 4 carbon atoms, with a specific gravity between 0.905 and 0.940 and a melt index between 0.4 and 3 dg/minute, wherein the average proportion of .alpha.-olefin units in the copolymer is between 1 and 8 mole percent, wherein the copolymer comprises crystalline fractions and amorphous fractions, wherein the distribution of the .alpha.-olefin units in the copolymer is heterogeneous, and wherein the proportion of .alpha.-olefin units in the copolymer varies between at least 0.2 and at most 5 times the average proportion, depending on the fractions considered. Application to the manufacture of films with a thickness of between 5 and 200 microns.

Abstract: Guayule resin is sulfurized such that it has a high softening point of at least 70.degree. C. The sulfurized guayule resin can be utilized in association with conventional rubbers and the end results in improved properties such as reduced hysteresis loss, increased tensile strength and the like.

Abstract: Polymeric dyes having pendent chromophore groups which are selected from azo, tricyanovinyl, anthraquinone, methine, and indoaniline groups fall into two classes, [A] condensation polymers, and [B] polymers derived from copolymerized ethylenically-unsaturated monomers, the dyes being capable of undergoing thermoplastic deformation by a focused laser beam when in a layer of thickness in the range of 0.1 to 100 micrometers and having an absorptivity in the range of 10 to 250 Lg.sup.-1 cm.sup.-1. They are film-forming, thermally- and light-stable, and solvent-coatable. These compounds are useful as coloring and light-absorbing agents, particularly as the light-absorbing agents in thin optical recording layers.

Abstract: A polypropylene-based resin composition comprising (A) from 60 to 99 parts by weight of a polypropylene-based resin and (B) from 1 to 40 parts by weight of an ethylene copolymer composed of from 25 to 98.5% by weight of ethylene, from 0.5 to 15% by weight of an unsaturated dicarboxylic acid anhydride and from 1 to 60% by weight of an unsaturated ester compound having from 4 to 12 carbon atoms and/or a modified copolymer obtained by ring opening addition reaction of the acid anhydride group of said ethylene copolymer with an alcohol having from 1 to 20 carbon atoms. The composition provides a molded particle having excellent finishing workability and improved mechanical properties.

Abstract: Novel, improved binders comprising a combination of heat reactive polymers. The novel binders are especially useful as saturants for fibrous sheet materials to provide high quality shoeboard materials.

Abstract: A multilayer composition comprising an outer layer of aromatic polycarbonate, an outer layer of a polymer prepared from an olefinic monomer, said outer layers tied together with a layer comprising an admixture of an olefin acrylate polymer and poly-(4-methylpentene-1), the olefin acrylate and poly-(4-methylpentene-1) in such quantities that the adhesive strength and clarity of the tie layer is not significantly reduced after exposure to hydrolytic conditions at elevated temperatures.