Abstract: A blend of a polyolefin, such as polypropylene, with a segmented copolymer containing both polyolefin segments and segments derived from greater than 20 to about 100% of a vinyl aromatic monomer is useful in applications where high melt strength is desired.

Abstract: Novel metallated polyolefins are produced by contacting a polyolefin having a vinylidene group in the terminal portion with organoalkali metal compound in the presence of alkali metal t-alkoxide or tertiary amine. The metallated polyolefin is used to initiate the polymerization of polymerizable monomers to produce block copolymers of at least two blocks, at least one of which is saturated polyolefin.

Abstract: Graft copolymers having improved phase binding between the graft base and the grafted-on polymer, are prepared from:a) a grafted-on polymer phase containing one or more monomers from the group consisting of (meth)acrylates of alcohols having 1 to 10 carbon atoms, vinyl esters of saturated aliphatic carboxylic acids having 2 to 10 carbon atoms, olefins, vinyl halides, styrene and styrene derivatives, andb) a peroxy group-containing copolymer phase containing from 0.01 to 20% by weight of an olefinically unsaturated peroxy compound of the general formula I or II ##STR1## where R.sup.1 is a chemical bond or a linear or branched alkyl chain having 1 to 10 carbon atoms or a cycloalkyl group having 3 to 10 carbon atoms, R.sup.2 and R.sup.3 are an alkyl group having 1 to 4 carbon atoms, R.sup.4 is an alkyl group or an alkyl-substituted phenyl group having 3 to 12 carbon atoms, and R.sup.5 is a cycloalkyl group having 3 to 12 carbon atoms, and from 80 to 99.

Abstract: The object of the present invention is to provide such a polyolefin that only the terminal of polypropylene or ethylene-propylene random copolymer is modified with a (meth)acrylic derivative unit to give a substantially monodipersed system. The feature thereof consists in such a polyolefin that the terminal of polypropylene or ethylene-propylene random copolymer obtained by living polymerization is modified with a (meth)acrylic derivative unit. As the (meth)acrylic derivative, there are used vinyl methacrylate, allyl methacrylate, trimethylsiloxyethyl methacrylate, 2-trimethylsiloxypropyl methacrylate, N, N-dimethylaminoethyl methacrylate, N,N-diethylaminoethyl methacrylate, glycidyl methacrylate, acrylic acid chloride and like.

Abstract: A modified polymer is described comprising a thermoplastic polymer composition comprising a graft copolymer between (1) a preformed thermoplastic polymer and (2) a monomer composition comprising (a) at least one polymerisable monomer containing a polymerisable group and at least one functional polymer-modifying group and (b) at least one comonomer containing at least two polymerisable groups, said copolymer being substantially free of unbound monomer. Such polymers can be produced by reacting together, in a melt and in the presence of free radicals whilst applying shear to the melt, the preformed thermoplastic polymer to be modified, the polymerisable monomer, and the comonomer, thereby to graft said monomer to said preformed polymer leaving substantially no unbound monomer, the reaction being continued for a period of time sufficient to produce a graft copolymer that is thermoplastic and can be blended with an unmodified polymer. A free radical generator can be added, if desired.

Abstract: The invention concerns graft copolymers, useful for the treatment of leather, comprising monomers of the formula ##STR1## grafted onto a base polymer comprising monomers of the formula ##STR2## wherein R.sub.1 and R.sub.2 stand for a hydrocarbon group having 2 to 24 carbon atoms, with the proviso that the groups R.sub.1 and R.sub.2 have van der Waals volumes which differ from one another by less than 30 percent.

Abstract: A syndiotactic graft copolymer is here disclosed in which a radical polymerizable unsaturated compound is grafted on a propylene homopolymer or copolymer, and this graft copolymer is obtained by heating a homopolymer having a substantially syndiotactic structure of propylene or a copolymer having a substantially syndiotactic structure of propylene and another .alpha.-olefin and a radical polymerizable unsaturated compound such as an unsaturated carboxylic acid or an unsaturated silane in the presence of a radical initiator up to the decomposition temperature or more of the radical initiator. This kind of graft copolymer can be used as a composition for adhesion. The graft copolymer in which the radical polymerizable unsaturated compound is a hydrolyzable unsaturated silane can be converted into a crosslinked polymer by heating in the presence of water, and it can also be converted into a water-crosslinkable resin composition by adding various additive thereto.

Abstract: An improved aqueous slurry process (with co-solvent) for the preparation of segmented copolymers of polyolefins and poly((meth)acrylates) is disclosed.

Abstract: A syndiotactic graft copolymer is here disclosed in which a radical polymerizable unsaturated compound is grafted on a propylene homopolymer or copolymer, and this graft copolymer is obtained by heating a homopolymer having a substantially syndiotactic structure of propylene or a copolymer having a substantially syndiotactic structure of propylene and another .alpha.-olefin and a radical polymerizable unsaturated compound such as an unsaturated carboxylic acid or an unsaturated silane in the presence of a radical initiator up to the decomposition temperature or more of the radical initiator. This kind of graft copolymer can be used as a composition for adhesion. The graft copolymer in which the radical polymerizable unsaturated compound is a hydrolyzable unsaturated silane can be converted into a crosslinked polymer by heating in the presence of water, and it can also be converted into a water-crosslinkable resin composition by adding various additive thereto.

Abstract: A particulate graft polymer A ofA1: a grafting base based on a polydiene rubber A1 of, based on A1,A11: 70 to 100% by weight of a polymerizable diene, andA12: up to 30% by weight of a copolymerizable, ethylenically unsaturated monomer having a first graft sheath A2 of, based on A2,A21: 75 to 99.8% of at least one C.sub.1 -C.sub.8 alkyl acrylate A21,A22: 0.1 to 5% by weight of at least one polyfunctional, crosslinking monomer A22,A23: 0.1 to 20% by weight of at least one monomer A23 containing one or more acidic or basic groups, and a second graft sheath A3 comprising, based on A3,A31: 40 to 89.9% by weight of at least one aromatic vinyl monomer A31,A32: 10 to 49.9% by weight of at least one polar, ethylenically unsaturated monomer A32,A33: 0.1 to 20% by weight of at least one monomer A33 containing one or more basic or acidic groups, andA34: up to 5% by weight of at least one polyfunctional, crosslinking monomer A34,A23 and A33 in each case being different groups.

Abstract: A lubricant for a thermoplastic resin, which is a three-stage polymer obtained by (A) polymerizing 80-100 w.t.% of methyl methacrylate and 0-20 w.t.% of other copolymerizable monomer so that the reduced viscosity .eta.sp/C of the obtained polymer is not higher than 2 dl/g, (B) polymerizing 30-70 weight parts of a monomer mixture composed of 20-80 w.t.% of an acrylic acid ester and 80-20 w.t.% of styrene or a substituted styrene in the presence of 10-60 weight parts of the polymer obtained at stage (A), so that the reduced viscosity .eta.sp/C of the copolymer obtained by polymerizing 5 to 30 weight parts of a monomer or monomer mixture composed of 50-100 w.t.% of a methacrylic acid ester and 0-50 w.t.% of other copolymerizable monomer in the presence of the two-stage polymer formed through stages (A) and (B), is that the total amount of the components used at staged (A), (B) and (C) is 100 weight parts and the reduced viscosity .eta.

Abstract: A composite for moldings having the high bending elastic modulus and the high bending strength, comprising a thermoplastic resin and a polymerizable monomer which is a multifunctional polymerizable monomer having an alicyclic strucure unit or a mixture consisting of a multifunctional polymerizable monomer having an alicyclic strucure unit and a monofunctional polymerizable monomer having at least two alicyclic structure units, is prepared by compounding them. Also, a composite for moldings having the high bending elastic modulus and the high bending strength, comprising a vinyl chloride resin, a (meth)acrylate monomer which is a multifunctional (meth)acrylate or a mixture consisting of a multifunctional (meth)acrylate and a monofunctional (meth)acrylate, and a polymerization initiator. The composite has good workability. Further, an unfluid precursor for moldings is prepared by heating the composite.

Abstract: Particulate graft copolymers for matt thermoplastic molding materials contain a base and a graft sheath. The base contains 75 to 99.8% of at least one alkyl acrylate, from 0.1 to 5% of at least one polyfunctional, crosslinking monomer having at least two ethylenic double bonds which are not conjugated in the 1,3-position, and from 0.1 to 20% of at least one ethylenically unsaturated monomer having one or more acidic groups. Alternatively, the base may contain at least 50% of one or more dienes, up to 50% of at least one further ethylenically unsaturated monomer, and up to 15% of at least one ethylenically unsaturated monomer having one or more acidic groups. The sheath contains from 0 to 99.8% of at least one aromatic vinyl monomer, from 0 to 99.8% of at least one polar, copolymerizable, ethylenically unsaturated monomer, from 0.1 to 20% of at least one ethylenically unsaturated monomer having one or more basic groups, and from 0.1 to 10% of at least one hydroxyalkyl (meth)acrylate.

Abstract: An acrylic molded product comprising an acrylic polymer coagulated material having excellent characteristics in impact resistance, optical properties, and hydrothermal resistance; an acrylic polymer coagulated material used for the preparation thereof; an composition comprising thereof; and a process for manufacture thereof; characterized by using an emulsion polymerization and a polymer with multiphase structured material comprising a hard phase and a soft phase and being freeze-coagulated.

Abstract: An unsaturated polyester resin composition for the production of cured molded article which comprises:an unsaturated polyester resin; anda core-shell polymer as a low shrinking agent which comprises:(a) a cross-linked core layer polymerized from a first monomer comprising an aromatic vinyl monomer in an amount of not less 50% by weight, the core layer being contained in the core-shell polymer in an amount of 50-90% by weight; and(b) a shell layer polymerized from a monomer comprising methyl methacrylate in an amount of not less 50% by weight;and the core-shell polymer having a refractive index in the range of 1.52-1.58 and within .+-.0.02 from the refractive index of the cured material of the unsaturated polyester resin.

Abstract: An actinic radiation-reactive pressure-sensitive adhesive composition which can be cured in air at a high speed, without irritation and bad smell, comprises1 a pressure-sensitive adhesive compound comprising an acrylate copolymer and2 an actinic radiation-curable resin comprising (1) one or more polythiol compounds and (2) one or more polyene compounds each having an least two actinic radiation-reactive acrylate carbon-to-carbon double bonds in the molecule.

Abstract: A resin composition including (A) 50 to 99% by weight of polycarbonate and (B) 1 to 50% by weight of a graft-copolymer; the graft copolymer (B) prepared by graft-polymerizing a monomer mixture (2) containing mainly 40 to 100% by weight of a C.sub.1 to C.sub.6 alkyl acrylate onto a rubber polymer (1) prepared by copolymerizing 60 to 100% by weight of a C.sub.6 to C.sub.10 alkyl acrylate, and small amounts of a crosslinking compound and a graftlinking monomer. The resin composition is remarkably excellent in impact strength at low temperature as well as excellent in thermal stability and weatherability.

Abstract: This invention relates to heat-sealable plastic films PF with at least two-phased structure in the thickness range up to 400 .mu.m that are suitable for tightly sealing plastic comprisinga) a high molecular weight or crosslinked polymer P with a molecular weight Mw greater than 50,000 and a glass transition temperature Tg below 10.degree. C.; andb) a copolymer CP with a glass transition temperature Tg above 20.degree. C. made up of.alpha.) 0-85 wt. % methyl methacrylate.beta.) 0-100 wt. ethyl methacrylate.gamma.) 0-100 wt. cyclohexyl methacrylate, cyclopentyl methacrylate, or a mixture thereof;.delta.) 0-20 wt. % of a monomer copolymerizable with the monomers .alpha.)-.gamma.), and different from them, provided that the sum of the components .alpha.) to .delta.) is 100 wt. %wherein at least 2 wt. % of copolymer CP is covalently bound to polymer P.

Abstract: Substantially linear ethylene polymers, e.g., polyethylenes prepared by constrained geometry catalysis (substantially linear ethylene), which are grafted with one or more unsaturated organic compounds containing both ethylenic unsaturation and a carbonyl group, e.g., maleic anhydride, exhibit desirable adhesive properties. These graft-modified substantially linear ethylene polymers also impart desirable compatibility and impact properties to various thermoplastic polymer blends.

Abstract: A process for crosslinking comprising (a) introducing into a reactor, under crosslinking conditions, a mixture comprising(i) one or more polyolefins;(ii) organic peroxide;(iii) an ester, ether, or ketone containing two or more unsaturated groups; and(iv) a compound having the formula: ##STR1## wherein R=hydrogen, methyl, or ethyl; R.sup.1 =an alkylene having 1 to 6 carbon atoms;andR.sup.2 =an alkyl having 8 or more carbon atoms or Si(R.sup.3).sub.3 wherein R.sup.3 is hydrogen or alkoxy having 1 to 6 carbon atoms; each R.sup.3 is the same or different; and at least one R.sup.3 is an alkoxy,and (b) crosslinking the polyolefin(s).

Abstract: The present invention provides a light-sensitive composition comprising specific photo-crosslinkable polymer compounds.The light-sensitive composition of the present invention exhibits excellent wear resistance when it is photo-hardened, and hence it can give lithographic printing plates capable of producing a lot of printed matter in good quality when it is used for presensitized plates for use in making lithographic printing plates.

Abstract: A molding material from a particulate graft polymer which consists ofA: a grafting base A based on an acrylate rubber andB: a graft B ofB1: from 40 to 89.9% by weight of at least one vinylaromatic monomer B1B2: from 10 to 49.9% by weight of at least one polar, coplymerizable, ethylenically unsaturated monomer B2B3: from 0.1 to 20% by weight of at least one monomer B3 containing one or more acidic groups.

Abstract: Star polymers having first polymeric arms comprising a hydrogenated conjugated diene and smaller second polymeric arms of a methacrylate resist coupling of methacrylate blocks attached to different cores and have improved performance as viscosity index improvers. The polymerized methacrylate units are converted to amide or imide groups by reaction with a primary or secondary amine to give the viscosity index improver dispersant properties.

Abstract: The invention relates to a heat-sealable plastic film PF with an at least two-stage construction ranging in thickness up to 400 micrometer, that is suitable for tightly sealing plastic containers, comprising:a) a high molecular weight or crosslinked polymer P with a molecular weight in excess of 50,000 and a glass transition point Tg of <10.degree. C.; andb) a copolymer CP with a glass transition point Tg higher than 20.degree. C. and where said copolymer comprises.alpha.) 20 to 80% by weight of at least one monomer of Formula I ##STR1## wherein R.sub.1 stands for methyl or ethyl (preferably methyl); .beta.) 80 to 20% by weight of at least one monomer of Formula II ##STR2## wherein R.sub.2 stands for a C.sub.4-18 alkyl residue, preferably C.sub.4-12 or a C.sub.4-12 cycloalkyl residue different from cyclopentyl or cyclohexyl; and.gamma.

Abstract: A particulate graft polymer comprisingA: from 30 to 80% by weight of one or more elastomeric polymers A having a mean particle size of from 30 to 1000 run, comprising, based on A,A1: from 85 to 99.8% by weight of one or more alkyl acrylates A1 having from 1 to 8 carbon atoms in the alkyl radical,A2: from 0.1 to 5% by weight of one or more polyfunctional, crosslinking monomers A2, andA3: from 0.1 to 10% by weight of one or more monomers A3 containing one or more acid groups, orA11: up to 100% by weight of a diene A11,A12: up to 50% by weight of one or more vinyl-aromatic monomers A12,A13: up to 10% by weight of one or more monomers A13 containing one or more acid groups, as the graft base, andB: from 20 to 70% by weight of a shell B grafted onto the elastomeric polymer A and comprising, based on B,B1: from 50 to 89.9% by weight of one or more vinylaromatic monomers B1,B2: from 10 to 49.9% by weight of one or more polar, copolymerizable, ethylenically unsaturated monomers B2, andB3: from 0.

Abstract: Disclosed is a methacrylic resin cast plate which is comprised of 100 parts by weight of [I] polymethyl methacrylate or a methyl methacrylate copolymer containing at least 90% by weight of methyl methacrylate units and, dispersed therein, a graft copolymer [IV] obtained by graft-polymerizing a hard resin component [III] containing at least 90% by weight of methyl methacrylate units onto a crosslinked rubbery copolymer [II] containing at least 45% by weight of butyl acrylate units and having an average particle diameter of 0.1 to 1 .mu.m, the amount of the graft copolymer [IV] being 2 to 30 parts by weight as the amount of the crosslinked rubbery copolymer.The methacrylic resin cast plate has a high transparency and impact resistance.

Abstract: Modified chlorinated polyethylene (CPE) for use as an impact modifier for polyvinyl chloride, comprising a thermoplastic grafted CPE prepared by polymerizing compatible monomers or comonomers, e.g. methyl methacrylate/styrene, methylmethacrylate or vinyl acetate, onto the CPE backbone via an aqueous slurry suspension polymerization and the process of producing the cited modified chlorinated polyethylene.

Abstract: A graft consisting of from 5 to 90% of a core A1 having a glass transition temperature above 25.degree. C. made up of, from 50 to 99.9% of a vinylaromatic monomer and from 0.1 to 10% of a polyfunctional crosslinking and/or graft-linking monomer optionally up to 49.9% of one or more copolymerizable monomers; from 5 to 90% of a first shell A2 of elastomeric material made up of from 50 to 99.8% of an alkyl acrylate and/or of a diene, from 0.1 to 10% of a polyfunctional graft-linking monomer, up to 49.8% of one or more copolymerizable unsaturated monomers and from 0.1 to 10% of one or more monomers containing acidic groups; from 5 to 90% of a second shell A3 of rigid material made up of from 50 to 99.9% of a vinylaromatic monomer, up to 10% of a polyfunctional cross-linking and/or graft-linking monomer, up to 49.9% of one or more copolymerizable monomers and from 0.

Abstract: A method for preparing a graft copolymer is here disclosed which is characterized by comprising the step of carrying out a living polymerization of at least one (meth)acrylic ester by the use of a polymeric compound as an initiator having one or more units represented by the following formula (I) in a molecular chain substantially in the absence of water in the presence of a Lewis acid or a donor compound of an anion selected from the group consisting of HF.sub.2.sup.-, (CH.sub.3).sub.3 SiF.sub.2.sup.- and F.sup.- : ##STR1## wherein R is hydrogen or an alkyl group having 1 to 6 carbon atoms, and R' is an alkyl group having 1 to 12 carbon atoms.

Abstract: A method for producing a graft-modified copolymer comprising the step of subjecting 100 parts by weight of an unsaturated copolymer comprising an .alpha.-olefin of 3 to 12 carbon atoms and a cyclic olefin represented by the following formula (I), and 0.1 to 300 parts by weight of a radically polymerizable monomer to the radical polymerization conditions: ##STR1## wherein R.sup.1 is a C.sub.2-5 alkylidene group or a C.sub.2-5 alkenyl group, R.sup.2 is a C.sub.1-5 hydrocarbon radical or H, and n is 0, 1 or 2.The graft-modified copolymer is imparted with various properties which are attributed to the polymer chain formed from the radically polymerizable monomer, without the excellent properties inherent in an .alpha.-olefin polymer being impaired. The copolymer is excellent in compatibility with other resins.

Abstract: A copolymer of an .alpha.-olefin with an aromatic diolefin such as divinylbenzene produced by means of Ziegler-Natta polymerization and having a vinylphenyl moiety is subjected to polymerization with an ethylenically unsaturated monomer by means of anion polymerization or free radical polymerization, whereby a graft-modified .alpha.-olefin copolymer is obtained.

Abstract: A two-part adhesive consisting of a first liquid comprising 100 parts by weight of a polymerizable vinyl monomer and from 0.1 to 20 parts by weight of an organic peroxide and a second liquid comprising 100 parts by weight of a polymerizable vinyl monomer and from 0.05 to 15 parts by weight of a reducing agent, wherein either one or both of the first and second liquids contain from 0.4 to 5% by weight of water, and the content of water is more than 0.2% by weight based on the total amount of the first and second liquids.

Abstract: A syndiotactic graft copolymer is here disclosed in which a radical polymerizable unsaturated compound is grafted on a propylene homopolymer or copolymer, and this graft copolymer is obtained by heating a homopolymer having a substantially syndiotactic structure of propylene or a copolymer having a substantially syndiotactic structure of propylene and another .alpha.-olefin and a radical polymerizable unsaturated compound such as an unsaturated carboxylic acid or an unsaturated silane in the presence of a radical initiator up to the decomposition temperature or more of the radical initiator. This kind of graft copolymer can be used as a composition for adhesion. The graft copolymer in which the radical polymerizable unsaturated compound is a hydrolyzable unsaturated silane can be converted into a crosslinked polymer by heating in the presence of water, and it can also be converted into a water-crosslinkable resin composition by adding various additive thereto.

Abstract: A methacrylate resin composition containing 20 to 99% by weight of a methacrylate resin and 80 to 1% by weight of a methacrylic two-layer polymer which has an inner layer and an outer layer and is characterized by the properties: (a) the inner layer having repeating units derived from methyl methacrylate and having a viscosity average molecular weight of 500,000 to 5,000,000, (b) the outer layer of the two-layer polymer having repeating units derived from methyl methacrylate and having a viscosity average molecular weight of 50,000 to 300,000, (c) a weight ratio of the inner layer to the outer layer of 1:9 to 9:1, (d) a glass transition temperature of 50.degree. to 120.degree. C. and (e) an average particle size of 200 to 5000 .ANG., which composition is excellent in moldability, resistance to heat distortion, mechanical properties and also solvent resistance.

Abstract: A toner for developing electrostatic images contains a binder resin and a colorant or a magnetic material. The binder is prepared by polymerizing ethylenically unsaturated monomer(s) in the presence of less than 0.1% by weight of the monomer(s) of a radical polymerization initiator. The resulting polymer or copolymer is dissolved in a polymerizable monomer and solution or suspension polymerized with a radical polymerization initiator. The resulting binder resin is substantially free of fragments of radical polymerization initiator which tend to bond to molecular chain terminals.

Abstract: Oxidatively crosslinking essentially isocyanate-free urethane resins, obtainable by reactingA) 100 parts by weight of an ester of(a.sub.1) an aliphatic C.sub.3 -C.sub.8 -alcohol having three or more hydroxyl groups and(a.sub.2) an unsaturated C.sub.8 -C.sub.40 -fatty acid and(a.sub.3) if required, an aliphatic or aromatic polycarboxylic acid of 4 to 20 carbon atoms or an anhydride thereof, in amounts of up to 60% by weight, based on the fatty acid a.sub.2),the ester containing sufficient free hydroxyl groups to correspond to an OH number of 50-150 mg of KOH/g, withB)(b.sub.1) 3-120 parts by weight of C.sub.5 -C.sub.15 -polyhydroxycarboxylic acids having two or more hydroxyl groups and(b.sub.2) 10-100 parts by weight of an aliphatic or cycloaliphatic polyisocyanate or a mixture thereof,at 50.degree.-150.degree. C. in the presence of a nonpolar solvent which is inert to isocyanates, are suitable for use as printing ink components.

Abstract: A segmented ionomeric copolymer when blended with a polyolefin improves sag resistance.

Abstract: A lubricant for a thermoplastic resin, which is a three-stage polymer obtained by (A) polymerizing 80-100 w.t. % of methyl methacrylate and 0-20 w.t. % of other copolymerizable monomer so that the reduced viscosity .eta.sp/C of the obtained polymer is not higher than 2 dl/g, (B) polymerizing 30-70 weight parts of a monomer mixture composed of 20-80 w.t. % of an acrylic acid ester and 80-20 w.t. % of styrene or a substituted styrene in the presence of 10-60 weight parts of the polymer obtained at stage (A), so that the reduced viscosity .eta.sp/C of the copolymer obtained by polymerizing 5 to 30 weight parts of a monomer or monomer mixture composed of 50-100 w.t. % of a methacrylic acid ester and 0-50 w.t. % of other copolymerizable monomer in the presence of the two-stage polymer formed through stages (A) and (B), is that the total amount of the components used at staged (A), (B) and (C) is 100 weight parts and the reduced viscosity .eta.

Abstract: A sliding property improving agent comprising a multi-phase structure thermosplastic resin which consists of a dispersion of 5 to 95 parts by weight of a non-polar .alpha.-olefin polymer (a) and 95 to 5 parts by weight of a vinyl polymer (b), with the dispersing polymer having a particle size from 0.001 to 10 .mu.m. A thermoplastic resin containing said resinous agent exhibits excellent mechanical strength, high anti-brasion and improved sliding properties.

Abstract: This invention relates to a two stage aqueous emulsion polymerization process for making graft copolymers. In the first stage, at least one first ethylenically unsaturated monomer is polymerized in the presence of at least one mercapto-olefin compound to form a macromonomer with terminal functional groups. In the second stage, at least one second ethylenically unsaturated monomer is polymerized in the presence of the macromonomer such that a copolymer is formed with a backbone of polymerized units of the at least one second ethylenically unsaturated monomer and side chains of the macromonomer.

Abstract: The present invention is directed to a process for the preparation of a finely divided vinyl chloride graft copolymer and to the use of this product as a viscosity-reducing agent for plastisols.

Abstract: A method for preparing a polyolefine-vinyl composite, in which method about 10-200 weight fractions of vinyl monomer and about 0.01-4.0 weight fractions of a free radical polymerization initiator, based on 100 weight fractions of vinyl monomer, are impregnated in 100 weight fractions of polyolefine particles by slowly mixing these at a temperature of about 20.degree.-100.degree. C. while continuously or discontinuously adding about 1-60% by weight of water, based on the total weight of the vinyl monomer and the polyolefine, during the maintenance of the particle structure of the polyolefine, is disclosed. A water suspension is prepared by adding water and stabilizing agents to the above-mentioned mixture after a completed impregnation. The total quantity of water is about 80-1000 weight fractions, based on 100 weight fractions of polyolefine+vinyl monomer. The temperature of the water suspension is then increased for polymerizing the vinyl monomer.

Abstract: A copolymer useful as a pour point depressant for hydrocarbon lubricating oils includes from about 15 mole percent to about 67 mole percent comonomeric units derived from a (C.sub.8 -C.sub.15) alkyl (meth)acrylate monomer, from about 3 mole percent to about 40 mole percent comonomeric units derived from a (C.sub.16 -C.sub.24) alkyl (meth)acrylate monomers and from greater than 30 mole percent to about 65 mole percent comonomeric units derived from a (C.sub.1 -C.sub.4)alkyl (meth)acrylate monomer.

Abstract: A toner for developing electrostatic latent images with a good combination of fixability, anti-offset characteristic, anti-sticking characteristic and pulverizability contains a composition comprising a colorant or magnetic material and a binder resin. The binder resin has 0.1 to 60 wt. % of a chloroform-insoluble or a THF (tetrahydrofuran)-insoluble component and a THF-soluble component, the THF-soluble providing a molecular weight distribution in the chromatogram of GPC (gel permeation chromatography) thereof such that there is a main peak in the molecular weight range of 1,000 to 25,000 and a sub-peak or shoulder in the molecular weight range of 2,000 to 150,000. The binder resin may suitably be obtained through two polymerization steps including a solution polymerization step and a suspension polymerization step.

Abstract: An improved process for the preparation of segmented copolymers of polyolefins and poly(methacrylates) is disclosed.

Abstract: The present invention relates to hydrogenated block copolymers of butadiene and at least one other diene, preferably isoprene. The copolymer is hydrogenated and comprises at least 10% by weight of at least one crystallizable segment and at least one low crystallinity segment.

Abstract: The present invention provides a thermosetting coating resin consisting of a branched polymer, which branched polymer is obtained by copolymerizing a macromolecular monomer having a radical-polymerizable group at one end in the molecule and having a weight-average molecular weight of 1,000-10,000, with another radical-polymerizable monomer, which branched polymer contains the unit of said macromolecular monomer in a proportion of 40-99.5% by weight based on the amount of total constitutional units, which branched polymer has a cross-linkable functional group, and which branched polymer has a weight-average molecular weight of 5,000-30,000. The present invention further provides a process for producing such a thermosetting coating resin.

Abstract: Disclosed are polymer having antistatic properties and having a multilayered structure comprising an innermost layer, a second layer, a third layer and an outermost layer; processes for preparing the multilayered polymer; and an antistatic resin composition comprising a thermoplastic resin and the multilayered polymer.

Abstract: An acrylic molded product comprising an acrylic polymer coagulated material having excellent characteristics in impact resistance, optical properties, and hydrothermal resistance; an acrylic polymer coagulated material used for the preparation thereof; an composition comprising thereof; and a process for manufacture thereof; characterized by using an emulsion polymerization and a polymer with multiphase structured material comprising a hard phase and a soft phase and being freeze-coagulated.

Abstract: Graft polymers are prepared by the free radical reaction of a base polymer such as polyethylene or polypropylene with an olefinic compound containing a tertiary alkyl ester group, which may be a simple carboxylic acid or a carbamic acid ester group. Upon melt blending or the like with polymers containing other functional groups, such as carboxy- or epoxy-functionalized polyphenylene ethers, the t-butyl groups are removed by thermal degradation and there are obtained copolymers which are useful to compatibilize blends of the corresponding polymeric constituents.