Abstract: Curable coating compositions comprising either a liquid or particulate curable film-forming resinous material, a flow control agent which is a copolymer and optionally a carrier for the liquid resinous material. The copolymer is from at least one non-amino, non-hydroxyl and non-acid functional alkyl acrylate or methacrylate containing from 1 to 20 carbon atoms in the alkyl group, and functional monomer of either (i) amino functional acrylates and methacrylates in an effective amount to give the copolymer an amine value in the range from 2 to 70, or (ii) acid functional acrylate and methacrylate in an effective amount to give the copolymer an acid value in the range of from 10 to 30. Additionally, with either functional monomer (i) or (ii) another functional comonomer (iii) can be present in the copolymer which is hydroxyalkyl acrylate and/or hydroxyalkyl methacrylate and/or caprolactone polyol monomer.

Abstract: An improved coating composition having one or more polymeric binders dispersed in a liquid medium, wherein the improvement comprises an anti-sag and anti-settling effective amount of a copolymer comprising a polymeric backbone comprising recurring monomeric units derived from monomers selected from the group consisting of one or more &agr;-olefins and one or more unsaturated carboxylic acids, said backbone having grafted thereto, by a covalent amide linkage, one or more polymeric grafts comprising at least one recurring monomeric unit selected from the group consisting of: —NHC(O)RC(O)NHR1 and —NH—R—C(O)— or a combination thereof, wherein R is an alkylene group of at least about 2 carbon atoms, and R1 is R or aryl.

Abstract: Disclosed herein is a golf ball with a cover formed from a polyamide composition and a method of making the same. More specifically, the golf ball has a cover which contains a combination of a polyamide component and an ionomeric component or a non-ionomeric terpolymer component. The cover composition has excellent durability and resistance to cracking, even at cold temperatures. The nylon-ionomer blend is a useful substitute for an ionomer golf ball cover, particularly when a low spin golf ball is desired.

Abstract: The invention relates to impact modifiers for polyamide compositions which improve the impact strength of the polyamides without adversely affecting the flexural modulus of the composition. The impact modifiers comprise blends of halogenated copolymers of a C4 to C7 isomonoolefin and an alkyl/styrene with a polyolefin.

Abstract: The invention relates to a thermoplastic composition comprising at least one polymer (M) forming a matrix in which are dispersed at least one polymer (S) and at least one polymer (K) and such that its tensile strength is greater than that of a composition comprising only (M) and (S), the proportion by weight of (M) being the same.

Abstract: There is provided a thermoplastic resin composition and interior or exterior parts for vehicle using thereof, which is excellent in flexibility, surface appearance, heat deformation property at heating and has low tackiness at a high temperature. The thermoplastic resin composition comprises 25 to 90 parts by weight of a (meth)acrylic ester copolymer (X), which is prepared by polymerizing 40 to 95% by weight of a (meth)acrylic ester, 0 to 40% by weight of a vinyl cyanide compound, not more than 60% by weight of an aromatic vinyl compound and 0 to 40% by weight of a monomer copolymerizable therewith, and has a glass transition temperature of not more than 20° C. and a gel content of not more than 50% by weight, 5 to 75 parts by weight of a copolymer (Y), which has a glass transition temperature or a melting point not less than 50° C.

Abstract: This invention is a toughened alpha-polyamide composition which has been admixed at a maximum shear rate of at least 400 sec−1 and which comprises: (a) 10 to 30, preferably 15 to 25, percent by weight (%wt) of a maleic anyhydride or acid functionalized polydiene polymer, (b) 60 to 89% wt of an alpha-polyamide, and (c) 1 to 10% wt of a polyamide prepared by copolymerizing a diamine and a dicarboxylic acid.

Abstract: The invention relates to a thermoplastic composition comprising at least one polymer (M) forming a matrix in which are dispersed nodules of (K), nodules of (K) entirely or partly encapsulated in at least one polymer (S) and nodules of (S) and such that the nodules of (K) entirely or partly encapsulated in (S) are smaller than the nodules of (S).

Abstract: The invention relates to an article based on a mixture of polyamide and polyolefin, which article includes at least one weld line due to multi-port injection molding, said article characterized in that the ratio of the viscosities of the polyolefin to the polyamide, measured at a shear rate higher than 100 s−1, is greater than 0.70, and that the quantity of polyamide is sufficient for the elongation at break to be greater than 10%. A typical application is the production of an injection molded automobile fender.

Abstract: A resin matrix with resistances to alkali and acid such as a fluorene-containing epoxy acrylate and/or a benzocyclobutene resin includes at least any one of insulative organic particles and insulative composite particles having an organic component and an inorganic component with the total amount of these particles being in the range of 5-50% by volume, wherein the insulative organic particles and the organic component of the insulative composite particles are allowed to be corroded by either alkali or acid, and wherein not less than 90% by volume of the insulative organic particles and insulative composite particles have a particle diameter in the range of 1-20 micrometers.

Abstract: A game ball comprising an ionomeric cover which includes a combination of ionomeric crosslinks and radiation induced covalent crosslinks. The game ball cover may include non-ionomeric materials. The game ball cover is superior in at least one of cut resistance and scuff resistance to a conventional cover that does not have the covalent crosslinks but is otherwise substantially identical in composition. The game ball cover of the invention is particularly useful for improving the durability of golf balls to be struck with sharp-grooved clubs.

Abstract: Grafting a polymer at the surface of a carbonated material containing carboxyl amine and/or hydroxyl functions at its surface. This material is suspended in a solution comprising the polymer to be grafted, which includes a carboxyl amine and/or hydroxyl function, the solution also comprising a solvent of the polymer. This is followed by a treatment causing dehydration into a carboxyl function, an amide and/or hydroxyl function and the polymer is thus grafted on the carbonated material by means of ester or amide bonds. Utilization in the cathode or anode of an electrochemical generator, in a polymer material with low polarity, in an ink, and as a conductive deposit on flexible plastic used as electrical contact, electromagnetic protection and antistatic protection.

Abstract: Polar polymers having the following formula: FG-(Q)d-Rn-Z-J-[A(R1R2R3)]x   (I) wherein FG is H or a protected or non-protected functional group; Q is a polar hydrocarbyl group derived by incorporation of a polar compound selected from group consisting of esters, amides, and nitrites of acrylic and methacrylic acid, and mixtures thereof; d is an integer from 10 to 2000; R is a saturated or unsaturated hydrocarbyl group derived by incorporation of a compound selected from the group consisting of conjugated diene hydrocarbons, alkenylsubstituted aromatic hydrocarbons, and mixtures thereof; n is an integer from 0 to 5; Z is a branched or straight chain hydrocarbon group which contains 3-25 carbon atoms, optionally containing aryl or substituted aryl groups; J is oxygen, sulfur, or nitrogen; [A(R1R2R3)]x is a protecting group, in which A is an element selected from Group IVa of the Periodic Table of Elements; R1, R2, and R3 are each independently selected from the group consisting

Abstract: A thermoplastic resin composition containing a polyetherimide resin, a glycidyl ester impact modifier and a organometallic compound exhibits improved impact strength and ductility.

Abstract: The invention concerns a mixture or polymer composite of a copolymer (CP) comprising between 70 and 99.9 wt % methylmethacrylate, between 0.1 and 5 wt % maleic acid anhydride and between 0 and 25 wt % further vinylically copolymerizable monomers which, apart from the vinyl function, have no further function groups, with a polymethacrylate-compatible plastics (VK) and a polymer (PN) which contains at least one terminal nucleophilic groups.

Abstract: Composite including a rubber/thermoplastic blend adherent by itself to a thermoplastic material; the blend is in the form of a thermoplastic matrix containing rubber nodules functionalized and vulcanized during the mixing with the thermoplastic. Composite articles obtained by overmolding the vulcanized rubber/thermoplastic blend onto the thermoplastic.

Abstract: A polyimide-based composite according to the invention is formed using a precursor comprising (A) a polyimide component and (B) another polymer component, wherein the polyimide forms a continuous phase and the other polymer forms a discontinuous phase, and the elastic modulus is less than 10 GPa. This structure provides both the properties of insulation, etc. contributed by the polyimide and the properties of low elastic modulus and satisfactory adhesion, moldability, etc. contributed by the other polymer. The polyimlde-based aqueous dispersion of the invention has dispersed therein particles with a mean particle size of 0.03-5 &mgr;m comprising the precursor of the polyimide-based composite, the dispersed particles including in the same particles the (A) polyimide component and (B) other polymer component comprising a hydrophilic polymer. This gives satisfactory storage stability to the aqueous dispersion.

Abstract: Thermoplastic molding compositions comprise A) from 10 to 97.9% by weight of a partly crystalline polyamide, B) from 0.1 to 50% by weight of a copolyamide composed of B1) from 60 to 90 mol % of units derived from s-caprolactam and B2) from 10 to 40 mol % of units derived from aliphatic dicarboxylic acids and from aliphatic diamines, C) from 1 to 40% by weight of a copolymer based on styrene or on substituted styrenes and on unsaturated nitriles, D) from 1 to 50% by weight of a fibrous filler and E) from 0 to 30% by weight of other additives, where the percentages by weight of components A) to E) are 100% in total.

Abstract: The present invention relates to a golf ball, comprising a cover, a core and optional intermediate layers, wherein the various ball components are formed from compositions comprising compatible blends of a relatively hard polyamide, in the form of a homopolymer, copolymer or block copolymer, with a relatively soft ionomer resin. The compositions include a substantially compatibilizer-free blend of about 10% to 80% of an ionomer resin and about 90% to 20% of at least one polyamide polymer, with the proviso that the polyamide polymer is not a block polyamide copolymer comprising main-chain polyether blocks. The present invention also relates to a golf ball comprising a cover layer, a core layer and at least one intermediate layer interposed there-between, wherein at least one of said layers consists essentially of up to about 99 wt. % of an ionomer and about 100 wt. % to about 1 wt.

Abstract: High-frequency-weldable polymer mixture containing: a copolymer of ethylene with comonomers selected from vinyl esters of saturated C.sub.2 -C.sub.8 carboxylic acids, C.sub.1 -C.sub.12 -alkyl acrylates and -methacrylates, optionally with carbon monoxide as termonomer; and polyamide-containing thermoplastic polyolefin which, in turn, contains a polyamide, polyolefin and, optionally, compatibilizing agents. The polyolefins can be a propylene copolymer with polypropylene blocks and random copolymer blocks, or a mixture of polypropylene and random copolymers. The polymer mixture has good high-frequency weldability and good weld seam strength as well as thermal stability accompanied by a low temperature dependency of the dielectric loss factor.

Abstract: A hot alkaline liquid soluble or dispersable composition made from a first polymer of an ethylene-acrylic acid copolymer having an acrylic acid portion, an ethylene-methacrylic acid copolymer having a methacrylic acid portion, or a mixture thereof, where the acrylic acid portion and the methacrylic acid portion each, independently, comprise from 10 to 30 wt. % of the total copolymer weight and also including an Ionomer-type copolymer having an acrylic acid portion, a methacrylic acid portion, or a combination thereof, comprising from 10 to 30 wt. % of the total Ionomer copolymer weight. Methods of making articles from such compositions. Methods of disposal of such compositions in hot liquid and alkaline conditions.

Abstract: An agent for providing an electrostatic coating property and improving the water resistance of a coating film comprises 100 weight parts of an aromatic ring-containing polyetheresteramide (A) derived from a polyamide having carboxyl groups at both ends and having a number average molecular weight of 500 to 5,000 and an alkylene oxide adduct of bisphenols having a number average molecular weight of 1,600 to 3,000; and 5 to 100 weight parts of a vinyl copolymer comprising as essential constituent units a vinyl monomer (b1) having a sulfonic acid (or sulfonate) group and at least one monomer (b2) selected from vinyl monomers having a functional group that is reactive with (A).

Abstract: A polyalkenyl derivative of an unsaturated acidic reagent prepared by the process of reacting a polyalkene having a Mn of at least 300 with an unsaturated acidic reagent at elevated temperatures in the absence of a strong acid until at least 25% of the polyalkene is converted to a polyalkenyl derivative of an unsaturated acidic reagent, continuing the reaction of the polyalkene with an excess of the unsaturated acidic reagent at elevated temperatures in the presence of a strong acid to convert at least some of the unreacted polyalkene to additional polyalkenyl derivative of an unsaturated acidic reagent, and removing the unreacted unsaturated acidic reagent.

Abstract: Disclosed is a polymer blend composition and shaped article, and a process of blending and making shaped articles of polymer blends in which the biocompatibility of various polymers is improved by blending with them a polymer including a zwitterionic group. The zwitterionic group is usually an ammonium phosphate ester, preferably a choline, zwitterionic group and the polymer containing it may be produced by the free radical polymerization of ethylenically unsaturated monomers including a monomer bearing the zwitterionic group. Blending of the two polymers may be achieved by dry blending particulate polymers or by mixing the polymers in liquid dispersion or solution followed by removal of the liquid medium. The fibrinogen absorption and/or platelet activation of polymers may be reduced to a value of less than 80% or even less than 60% of the base polymer by introducing amounts of more than 10% or more than 30% of the zwitterionic group containing polymer.

Abstract: The present invention relates to a multiphase thermoplastic composition consisting of a mixture (I) including at least one ethylene polymer (A) which has units derived from unsaturated epoxy and at least one thermoplastic resin (B) partly encapsulated by the said ethylene polymer (A), the said mixture (I) being dispersed in a matrix of thermoplastic resin (C).

Abstract: The present invention relates to a method for producing a thermoplastic resin composition by melt mixing Thermoplastic Resin (A) with Thermoplastic Resins (B) and (C) having a lower melting temperature or glass transition point than Thermoplastic Resin (A) by 10.degree. C. or more. The method comprises feeding Thermoplastic Resin (A) containing volatile components having a molecular weight of 300 or less at an amount of 500 to 30,000 ppm and Thermoplastic Resin (B) containing fewer volatile components than Component A from a top supply port of a melt kneader, removing volatile components under reduced pressure, and feeding Thermoplastic Resin (C) from a side supply port. According to the present invention, it is possible to produce a thermoplastic resin composition which satisfies inconsistent properties, i.e., improved impact strength and fewer volatile components, while at the same time having advantages in energy consumption and operation.

Abstract: The invention relates to a thermoplastic composition comprising at least one polymer (M) forming a matrix in which are dispersed nodules of at least one polymer (K) which are encapsulated in at least one polymer (S) in such a way that these encapsulated nodules are smaller than the nodules of the polymer (S) which are dispersed in the matrix (M).

Abstract: Pulverulent coating compositions exhibiting excellent adhesion to metal substrates are formulated from a polyamide, e.g., nylon 6, nylon 11, nylon 12, or copolyamide thereof, and minor amounts of at least one phenolic polycondensate and/or at least one polyalkyl (meth)acrylate.

Abstract: The invention relates to a thermoplastic composition comprising at least one polymer (M) forming a matrix in which are dispersed at least one polymer (S) and at least one polymer (K) and such that its tensile strength is greater than that of a composition comprising only (M) and (S), the proportion by weight of (M) being the same.

Abstract: A copolymer comprising:(a) from 10 to 70% by moles of ethylene,(b) from 30 to 90% by moles of a fluorinated monomer selected from tetrafluoroethylene, chlorotrifluoroethylene, or their mixtures,(c) from 0.1 to 30% by moles, with respect to the total amount of monomers (a) and (b), of a hydrogenated monomer having the formula:CH.sub.2 =CH--(CH.sub.2).sub.n --R.sub.1 (I)where R.sub.1 =--OR.sub.2, --(O).sub.t CO(O).sub.p R.sub.2 with t and p as integers: t=0 or 1 and p=0 or 1 and R.sub.2 is a hydrogenated radical from 1 to 20 carbon atoms C.sub.1 -C.sub.20, branched and/or linear alkyl and cyclo-alkyl radical or R.sub.2 is H. The R.sub.2 radical may optionally contain: heteroatoms preferably Cl, O, N; one or more functional groups, preferably chosen among OH, COOH, epoxide, ester and ether; and double bonds. The n subscript is an integer number between 0 and 10.

Abstract: A method of preparing fiber reinforced acrylic thickened compositions which can be molded under low pressures and temperatures to provide thermoset articles, wherein liquid reactive components are slowly absorbed in high molecular weight solid acrylic resin in the form of large particles. The acrylic resin functions as a thickener which delays the viscosity build allowing fiber reinforcement to be incorporated before molding. The molding composition is well suited for use in dentistry and other fields where small amounts or molding composition are used occasionally.

Abstract: The invention relates to a polymeric blend having a major amount of an elastomeric material and a minor amount of at least one particulate polyimide. Additionally, the polymeric blend may further contain lubricants.

Abstract: A polystyrene-based resin composition, comprising (A) a styrene-based resin with a mainly syndiotactic configuration, (B) a polyolefin, and (C) rubber polymer particles as main components, exhibits excellent heat resistance and impact resistance.

Abstract: A polymer composition containing carboxyl groups which has excellent water solubility, thickening properties and flow characteristics. The composition comprises (A) a crosslinked polymer comprising (a) an .alpha.,.beta.-unsaturated carboxylic acid and (b) a compound having at least two ethylenically unsaturated groups, and (B) at least one polymer comprising N-vinylpyrrolidone as essential monomer.

Abstract: A water-redispersible powder composition comprising (a) 100 parts by weight of a powder consisting of a water-insoluble film-forming polymer prepared from at least one ethylenically unsaturated monomer and at least one monomer selected from monomers having a carboxylic function and acrylamide or methacrylamide, and (b) 2-40 parts by weight and preferably 8-22 parts by weight of at least one amino acid or a salt thereof. A method for preparing said composition and the use thereof are also disclosed.

Abstract: The present invention provides a highly impact resistant polyamide composition which comprises a polyamide resin and an acid modification product of a metallocene catalyzed polyolefin elastomer. The invention also provides a less hygroscopic and highly impact resistant polyamide composition which comprises a polyamide resin, novolak phenol and an acid modification product of a metallocene catalyzed polyolefin elastomer. Used as the polyamide resin is less expensive nylon 6.

Abstract: The present invention uses high molecular weight polyethene glycol copolymer with high antistatic property, and other solubilizer agent to proceed blending and enhancing the co-solublization property of the polyamide. The long-term antistatic plastic particles obtained by blending the modified antistatic composition and the polyamide material are made into different articles according to various composites. The molded articles are divided into three types: (1) an antistatic polyamide article with surface resistance of about 10.sup.10 -10.sup.11 (.OMEGA./sq.), and the dissipation time of electrostatic charge is less than 1.5 sec; (2) an antistatic polyamide fiber with surface resistance of about 6.times.l0.sup.10 -1.2.times.10.sup.12 (.OMEGA./sq.), and the dissipation time of electrostatic charge is less than 60 sec; (3) a polishing resistant antistatic polyamide with surface resistance of about 10.sup.10 -10.sup.11 (.OMEGA./sq.), and the dissipation time of electrostatic charge is less than 1.5 sec.

Abstract: The present invention provides a sheet molding compound consisting in a sandwich structure comprising a central layer of reinforced uncured heat hardenable sheet molding compound; and two outer layers of a release film having low permeability to hydrocarbons comprising at least one layer (i) of a polyamide/polyolefin alloy having a polyamide matrix and at least one layer (ii) of a polyolefin.

Abstract: Polyamide coating compositions that demonstrate strength and toughness, flame and corrosion resistance and resistance to hydrolysis and thermal degradation at coating thicknesses of less than or equal to 0.25 mm or 0.15 mm are provided. Such coating compositions are extremely useful for coating wires or cables that are housed in automotive electrical harnesses.

Abstract: A thermoplastic composition with improved properties for making fuel containers, e.g. for fuel oil, petrol, diesel oil or alcohol, and specifically for making fuel lines for feeding fuel to a fuel tank or engine. The thermoplastic composition includes a thermoplastic polymer matrix and at least one compound that enhances the resilience of thermoplastic compositions. Said matrix consists of a mixture of: at least one first thermoplastic copolymer produced by copolymerising .epsilon.-caprolactam with at least one monomer selected from the group which includes an amino acid having at least nine carbon atoms, or the corresponding lactam, and a mixture of hexamethylediamine and a diacid having at least nine carbon atoms, the weight ratio of the .epsilon.-caprolactam to the total amount of hexamethylenediamine and diacid being 4-9; and at least one second thermoplastic polymer or copolymer produced by polymerising monomers having at least nine carbon atoms.

Abstract: A composition amenable to injection molding and extrusion comprises a syndiotactic styrene resin, a thermoplastic resin such as a polyolefin and an inorganic filler optionally contains a rubber.

Abstract: The present invention relates to a crosslinked elastomer with thermoplastic conversion and to a process for its manufacture. The elastomer with thermoplastic conversion is characterized in that it includes at least one polyoctene and a grafted polyolefin. The invention has numerous industrial applications, especially in the manufacture of insulating and/or leakproofing gaskets and packings as employed for thermal and sound insulation and/or leakproofing against water and moisture, as well as of conduits, tubes, pipes, tubings, couplings and the like for the transfer of fluids.

Abstract: Dynamic vulcanizates of an engineering thermoplastic ("plastic"), e.g. a polyamide or polyester, with acrylate rubbers having dissimilar functional groups are prepared with a metal fatty acid salt in the absence of a conventional curative, provided the rubbers are molecularly intermixed. An acrylate rubber with halogen functionality ("AcrRubHal") is thus crosslinked in a single mixing stage with an acrylate rubber having carboxyl, hydroxyl or epoxy functionality ("AcrRubX") in a "plastic". Quaternary ammonium salts and tertiary amines do not function as curatives, as one might expect. But a metal fatty acid salt, preferably a metal stearate or oleate and concentrates thereof effectively crosslink the rubbers. TPVs produced without conventional curing agents are relatively "soft", but have highly desirable low temperature physical properties and oil resistance.

Abstract: Curable coating compositions comprising either a liquid or particulate curable film-forming resinous material, a flow control agent which is a copolymer and optionally a carrier for the liquid resinous material. The copolymer is from at least one non-amino, non-hydroxyl and non-acid functional alkyl acrylate or methacrylate containing from 1 to 20 carbon atoms in the alkyl group, and functional monomer of either (i) amino functional acrylates and methacrylates in an effective amount to give the copolymer an amine value in the range from 2 to 70, or (ii) acid functional acrylate and methacrylate in an effective amount to give the copolymer an acid value in the range of from 10 to 30. Additionally, with either functional monomer (i) or (ii) another functional comonomer (iii) can be present in the copolymer which is hydroxyalkyl acrylate and/or hydroxyalkyl methacrylate and/or caprolactone polyol monomer.

Abstract: This invention describes a staged process in which successive dynamic vulcanizations of plural curable rubber blend components are based on condensation reactions of a functional group (reactive site) carried by each curable rubber. The process is carried out in three stages during each of which gases evolved during the condensation reactions are removed. It is essential to form an intermediate fully dense hard blend in the second stage. This intermediate hard blend contains a relatively large amount of plastic (relative to curable rubbers) and is therefore much harder than the desired final blend. In the third stage, additional rubber and curative for uncured rubber are added to achieve the desired softness. This process, carried out in an extruder, results in fully dense pellets which are injection moulded to produce articles having essentially the same specific gravity as that of the pellets.

Abstract: The present invention relates to a golf ball, comprising a cover, a core and optional intermediate layers, wherein the various ball components are formed from compositions comprising a polyamide, in the form of a homopolymer, a copolymer or mixtures thereof. The compositions include a blend of about 1 wt. % to about 99 wt. % of at least one sulfonated and/or phosphonated polymer and about 99 wt. % to about 1 wt. % of at least one polyamide polymer. The polyamides of the present invention comprise polyamides and polyamide copolymers, such as polyamide block copolymers. The sulfonated and/or phosphonated polymer preferably comprises sulfonated thermoplastic elastomers, sulfonated thermoplastic polymers, and mixtures thereof.

Abstract: The present invention relates to a mixture of polymers (A) having polyamide blocks and copolymers (B) comprising vinylaromatic units and unsaturated carboxylic anhydride units, the quantity of (B) being sufficient for the melt index (or melt flow index, MFI) of the mixture of (A) and (B) to be less than the melt index of (A) alone.It also relates to masterbatches of (A) and (B).

Abstract: The instant invention teaches a method for enabling the formation of a high damping, soft polymer gel. The method includes: reacting a poly(maleimide-co-alkenyl benzene) polymer with a nylon and an alkyl diamine under substantially dry conditions sufficient to form a nylon grafted poly(maleimide-co-alkenyl benzene) polymer product; and, dispersing the nylon grafted poly(maleimide-co-alkenyl benzene) polymer product with an extender oil sufficient to form the gel. The instant invention also contemplates a polymer gel composition, a polymer composition and an article manufactured from the polymer gel composition.

Abstract: Disclosed is a golf ball having excellent shot feel, control properties as well as satisfactory flight performance and cut resistance. The golf ball of the present invention has a core and a cover for covering the core, wherein the cover has a stiffness modulus of 100 to 250 MPa, and is prepared from a resin composition comprising, as a base resin, a mixture of the following resin (A) and resin (B) in a weight ratio of 60:40 to 90:10:resin (A): an ionomer resin (i) obtained by neutralizing with metal ion at least a part of carboxyl groups in a copolymer of ethylene and an .alpha., .beta.-unsaturated carboxylic acid, or a mixture of the ionomer resin (i) and an ionomer resin (ii) obtained by neutralizing with metal ion at least a part of carboxyl groups in a terpolymer of ethylene, an .alpha., .beta.-unsaturated carboxylic acid and an .alpha., .beta.

Abstract: A method of bookbinding comprising the steps of a) applying a film comprising at least one hot melt polyamide at an application temperature of between about 175.degree. C. and about 190.degree. C. to the backbone of a book block said film having a tensile strength greater than about 400 psi and a Young's modulus of less than about 12,000 psi and b) covering said book block having said film of polyamide with a book cover having a portion thereof in substantially parallel relation to said film.