Abstract: The thermal degradation of the biodegradable bacterial polyesters poly(3-hydroxybutyrate), PHB, and poly(3-hydroxybutyrate-co-3-hydroxyvalerate), PHB/V produces a macromer, especially a 1000-6000 g/mol macromolecule, which contains an unsaturated end group as well as a carboxylic acid end group. The macromers may be polymerized to produce homopolymers and copolymers for different applications in which amphiphilic and biocompatible properties are required, for example, drug delivery systems.

Abstract: Mercaptans are normally used as chain transfer agents in emulsion polymerizations. The mercaptans used in commercial applications are typically complex mixtures of hundreds of similar compounds having boiling points within a narrow range. The chain transfer activity of different mercaptans with such mixtures can vary substantially. To further complicate the situation, the distribution of various mercaptans can also vary substantially between lots of material obtained from commercial sources. Thus, consistent molecular weight control is typically difficult to attain in free radical emulsion polymerizations. This invention is based upon the unexpected discovery that dibenzyltrithiocarbonate will act as a pure compound to effectively and consistently control molecular weight in free radical emulsion polymerizations. The polydispersity of polymers made using dibenzyltrithiocarbonate as a molecular weight regulator is similar to that obtained using conventional mercaptan systems.

Abstract: A process for preparing microgel(s) that uses a wide range of activatable prepolymers; in the process, a polymer composition of crosslinked component A and soluble components B and C is formed from mono-olefinic and multi-olefinic monomers in the presence of catalyst and initiator; the process comprises: I) introducing mono-olefinic monomer, catalyst, and initiator into a reactor in the absence of multi-olefinic monomer and producing an activatable prepolymer, component B; II) contacting the product of I) with multi-olefinic monomer to produce components A and C, optionally in the presence of additional initiator; also optionally in the presence of additional mono-olefinic monomer and initiator; the ratio of components A/(B+C) can be controlled by varying the mole ratio of Component B/ multi-olefinic monomer from 0.05/1 up to 5/1, by decreasing the mole ratio to increase the ratio of A/(B+C), and increasing the mole ratio to decrease the ratio of A/(B+C).

Abstract: Nitroxides having an alpha-carbon atom with a destabilizing moiety are effective control agents for emulsion and water-based polymerizations, including the formation of block copolymers from a wide range of monomers. The nitroxide radicals may be used as a free radical or as an adduct with a residue from the initiator. The emulsions have living characteristics, including the re-initiation of polymer chains. Also, a seeded process for emulsions, which includes the step-wise addition of monomer is disclosed, providing access to a wide range of initiator types.

Abstract: A process for producing a cationic emulsion stable to alkalis having an average particle diameter of 0.01 to 0.1 micron, in which using, as an emulsifier, a water-soluble polymer A2 obtained by subjecting a polymer A1 having a weight average molecular weight of 5,000 to 100,000 obtained by copolymerizing an amino group-containing compound with a compound copolymerizable therewith in the presence of a polymerization initiator, to neutralization with an organic or inorganic acid in a proportion of 0.5 to 1.

Abstract: An invention is disclosed which pertains to components for gel coat compositions, a process for making such gel coat compositions, and a process for making gel coated articles. Low molecular weight unsaturated polymers which incorporate multiple pendent and/or terminal acrylic or methacrylic vinyl groups are made by the addition polymerization of acrylate/methacrylate monomers with epoxy acrylates such as glycidyl methacrylate, followed by ring opening of the oxirane via action of an (meth)acrylic acid in combination with a ring-opening catalyst to produce the final unsaturated polymer. Gel coat compositions containing such polymers possess improved rheological properties and may be used to create durable in-mold coatings for articles requiring good hydrolytic stability and UV resistance.

Abstract: The present invention provides a liquid water-swellable coating compound, which is substantially devoid of volatile non-reactives. The water-swellable coating compound can be applied, to an article and cross-linked in place on the article to create a water-swellable, super absorbent polymer coating. The super absorbent polymer coating of the present invention is a flexible water-absorbent coating and comprises a cross-linked polymer prepared by polymerizing a reactive mixture, which comprises: substantially between thirty-five weight percent (35%) and ninety-nine and nine-tenths weight percent (99.9%) of one or more amine neutralized monomer; substantially between one tenth of one weight percent (0.1%) and fifteen weight percent (15%) cross-linking monomer; substantially between zero weight percent (0%) and fifty weight percent (50%) water soluble, substantially monofunctional oligomer; and substantially between one-half of one weight percent (0.

Abstract: A process for preparing rac/meso-metallocenes, the rac/meso-metallocenes themselves and the use of the rac/meso-metallocenes for preparing isotactic polyolefins are described.

Abstract: Processes for the living polymerization of olefin monomers with terminal carbon-carbon double bonds are disclosed. The processes employ initiators that include a metal atom and a ligand having two group 15 atoms and a group 16 atom or three group 15 atoms. The ligand is bonded to the metal atom through two anionic or covalent bonds and a dative bond. The initiators are particularly stable under reaction conditions in the absence of olefin monomer. The processes provide polymers having low polydispersities, especially block copolymers having low polydispersities. It is an additional advantage of these processes that, during block copolymer synthesis, a relatively small amount of homopolymer is formed.

Abstract: The invention relates to polyfunctionally reactive polymeric substances which contain at least two structural units of the general formulae (I) and/or (II) in the molecule and whose polymer backbone linkages are C—C bonds, ether bonds, urethane bonds, amide bonds, ketone bonds or combinations thereof. The substances are useful as binders for various applications.

Abstract: The present invention relates to a semiconductor device using a copolymer-containing photoresist, and a process for manufacturing the same. As a norbornene derivative (monomer) having a hydrophilic group is synthesized and introduced to the backbone chain of a polymer, the polymer according to the present invention has excellent etching resistance and heat resistance, which are the characteristic points of alicyclic olefin structure, and provide excellent resolution due to prominent enhancement of adhesiveness resulted from introducing a hydrophilic group (—OH).

Abstract: The present invention relates to a latex containing two populations of particles of polymers based on vinyl chloride. Other subjects of the present invention are processes for producing this latex and its use in the manufacture of fluid plastisols which are stable on storage.

Abstract: Disclosed is a method for the preparation of norbornene and substituted norbornene compounds via a Diels-Alder reaction, in which a cyclic diene is reacted with an olefinic compound in order to prepare a norbornene compound. According to the invention a cyclic diene is gradually added to react with an olefinic compound, in order to keep the concentration of the cyclic diene in the reaction mixture as low as possible during the reaction. It is possible to obtain a very pure product, high yield, short reaction time and high concentrations of the exo diastereomer with the method of the invention.

Abstract: Process for the manufacture of a composition comprising ethylene polymers, in at least two polymerization reactors connected in series, according to which, in a first reactor, from 30 to 70% by weight with respect to the total weight of the composition of an ethylene homopolymer (A) having a melt flow index MI2 of 5 to 1000 g/10 min is formed and, in a subsequent reactor, from 30 to 70% by weight with respect to the total weight of the composition of a copolymer of ethylene and of hexene (B) having a melt flow index MI5 of 0.01 to 2 g/10 min is formed. The compositions obtained by this process exhibit a good compromise between the processing properties and the mechanical properties, which renders them capable of being used in the manufacture of articles shaped by extrusion and extrusion blow-molding, such as films and pipes.

Abstract: A process of producing polyethylene, the process comprising copolymerizing ethylene and an alpha-olefinic comonomer comprising from 3 to 8 carbon atoms in the presence of a chromium-based catalyst in a main polymerization reactor and, in a gas-phase preliminary reactor upstream of the main polymerization reactor, chemically treating the chromium-based catalyst with at least one treatment agent prior to introduction of the catalyst into the main polymerization reactor and releasing from the preliminary reactor waste gases produced during the chemical treatment.

Abstract: A continuous process for making a comb-branched copolymer of an acrylic monomer and a polyether macromonomer is disclosed. The process is performed by continuously feeding a reaction zone with a monomer stream that contains an acrylic acid and a polyether macromonomer, and an initiator stream. The comb-branched copolymer made thereby performs better as water reducing agent in cement compared to that made by a batch process.

Abstract: A method for the preparation of latexes with hollow polymer particles useful as opacifying agents. The process comprises the preparation of hollow polymer particle latex by emulsion copolymerization with water soluble initiator and anionic surfactant as follows: a) preparation of seed latex of copolymer containing methyl methacrylate and methacrylic acid; b) preparation of latex of highly carboxylated copolymer containing methyl methacrylate and a cross-linking agent and optionally a vinyl aromatic compound; c) using highly carboxylated latex synthesized at stage b) in the preparation of the intermediate shell comprising a copolymer of methyl methacrylate, acrylic acid ester, a cross-linking agent and optionally vinyl aromatic compound, said intermediate shell copolymer having a glass transition temperature below 80° C.

Abstract: The invention relates to a novel olefin polymerization catalyst system comprising a reaction product of a transition metal compound. A stable and active single active site catalyst is obtained by producing said reaction product by: (I) contacting in an organic solvent the following reactive components (a) a transition metal compound, which is at least partially soluble in the organic solvent and contains in its molecule at least one organic group and a transition metal chosen from periods 4-7 and groups 3-10 of the Periodic Table (IUPAC 1990), and (b) 0.05-500 moles of an unsaturated organic compound per mole of transition metal of the transition metal compound, which unsaturated organic compound is at least partially soluble in the organic solvent, has in its molecule 2-30 carbon atoms and at least one terminal double bond,  to obtain a reaction product dissolved in the organic solvent; and (II) recovering the reaction product of the transition metal compound.

Abstract: Process for the manufacture of a composition comprising ethylene polymers, in at least two polymerization reactors connected in series, according to which, in a first reactor, from 30 to 70% by weight with respect to the total weight of the composition of an ethylene homopolymer (A) having a melt flow index MI2 of 5 to 1000 g/10 min is formed and, in a subsequent reactor, from 30 to 70% by weight with respect to the total weight of the composition of a copolymer of ethylene and of hexene (B) having a melt flow index MI5 of 0.01 to 2 g/10 min is formed. The compositions obtained by this process exhibit a good compromise between the processing properties and the mechanical properties, which renders them capable of being used in the manufacture of articles shaped by extrusion and extrusion blow-molding, such as films and pipes.

Abstract: Methods are disclosed for preparing a highly active solid metallocene-containing catalyst system and its use in the polymerization of olefins. The catalyst system is prepared by creating a catalyst system solution by combining an aluminoxane with a metallocene having a substituent which has olefinic unsaturation in a suitable liquid to form a liquid catalyst system, conducting prepolymerization of an olefin in the liquid catalyst system, and separating the resulting solid metallocene-containing catalyst system from the reaction mixture. Also polymerization of olefins using the inventive solid catalyst system is disclosed.

Abstract: A method for coating a textile includes applying a substantially water-free, energy-curable, polymer-forming composition to the textile and exposing the textile and composition to a source of energy under such conditions as to generate chemically active sites on the surface of the textile and polymerize the composition. The resulting polymer is grafted onto the textile. Preferably, the energy is derived from electron beam radiation. The composition includes an epoxy oligomer having at least two ethylenically unsaturated moieties, and at least one alkoxylated polyol monomer having at least two ethylenically unsaturated moieties and capable of being copolymerized with the epoxy oligomer. Preferably, the composition also includes a surface active agent capable of rendering the uncured composition dispersible in water. Optionally, the composition can contain a colorant, and photoinitiator. The composition is especially suitable for use as a screen printing ink and coating material for textiles.

Abstract: A two-step olefin polymerization process is disclosed. A single-site catalyst precursor reacts with a boron-containing activator and a first olefin substantially in the absence of an alumoxane to produce a stable, prepolymer complex, which is then used to polymerize a second olefin in the presence of a scavenging amount of an alumoxane. The process gives high molecular weight polyolefins with low residual aluminum contents. Boron-containing activators can be used, even at reaction temperatures greater than 100° C., while maintaining high catalyst activity.

Abstract: Metallocene having two cyclic dienyl groups connected by a single carbon having an aryl substituent and a terminally unsaturated hydrocarbyl substituent, olefin polymerization catalyst systems prepared therefrom, and the use of such catalyst systems are disclosed.

Abstract: An aqueous dispersion comprising a copolymer which is the polymerization product of a mixture of vinylic monomers wherein from about 5% to about 90% by weight of the vinylic monomers are selected from co-esters of a drying oil acid and an unsaturated &agr;, &bgr;-polymerizable unsaturated carboxylic acid, contains from about 0.5% to about 50% by weight based on the weight of the copolymer of a hydrophobic ester or partial ester of a drying oil acid and a polyol. The copolymer polymerized in the presence of the hydrophobic ester or partial ester is characterized by a relatively low gel content, and by a relatively broad, multi-nodal, molecular weight distribution, including a low molecular weight component which acts as a transient plasticizer and coalescing agent. The aqueous dispersions can be formulated into quick drying coating compositions which form smooth protective films on various substrates, without requiring volatile coalescing agents.

Abstract: Provided is a method for producing an amphoteric resin which comprises reacting (1) a copolymerizable basic prepolymer A2 which is obtained by reacting a prepolymer A1 being obtained by polymerization of an amino group-containing &agr;, &bgr;-ethylenically polymerizable compound, other &agr;, &bgr;-ethylenically polymerizable compound and a polymerization initiator containing a carboxyl group at an end, with a compound having an epoxy group represented by the following formula (I): (wherein R1 represents H or a methyl group, and R represents a straight or branched chain alkyl group of 1-10 carbon atoms) in an amount of 0.1-1.0 equivalent for the amino group equivalent of the prepolymer A1 and (2) an &agr;, &bgr;-ethylenically polymerizable acidic prepolymer B2 which is obtained by carrying out the reaction in the same manner as above with (3) other &agr;, &bgr;-ethylenically polymerizable compound C.

Abstract: A method for producing a low density copolymer of ethylene and 1-hexene having a density in the range of about 0.915 to about 0.930 grams/cc in a continuous loop reactor under slurry phase reactor conditions in the presence of a liquid diluent comprising (a) using a prepolymerized solid particulate metallocene catalyst system, (b) combining the catalyst system with a liquid diluent, and (c) agitating the mixture of (b) to form a liquid mixture containing catalyst system particles that are substantially uniform in size, (d) passing this liquid mixture into the loop reactor, (e) not adding any hydrogen, (f) employing the temperature in the range of about 170.degree. F. to about 180.degree. F., (g) employing ethylene in an amount equal to about 5 to about 6 weight % of the liquid diluent and the loop reactor, and (h) employing 1-hexene in an amount equal to about 1.5 to about 2.5 weight % of the liquid diluent in the loop reactor.

Abstract: An olefin (co)polymer composition comprising, as major components, (a) 0.01 to 5 parts by weight of an olefin (co)polymer having an intrinsic viscosity [.eta..sub.a ] as measured in 135.degree. C. tetralin of 15 to 100 dl/g and (b) 100 parts by weight of an olefin (co)polymer obtained by using a metallocene catalyst and having an intrinsic viscosity [.eta..sub.b ] as measured in 135.degree. C. tetralin of 0.2 to 10 dl/g. When polyethylene having a high degree of polymerization is produced before a so-called metallocene catalyst is used to polymerize, e.g., propylene in the presence of the polyethylene as a component of a catalyst composition, a polypropylene composition having a high melt tension and a high crystallization temperature is produced.

Abstract: A method for tailoring the viscosity of a conjugated polymer precursor, the method comprising synthesizing the precursor by a polymerization reaction and, during the polymerization reaction, applying a shear to the reactants of the polymerization reaction so as to define the viscosity of the precursor at a desired value.

Abstract: Components and catalysts for the polymerization of olefins comprising the product obtained by contacting a compound of a transition metal M, containing at least one M-.pi. bond, with an olefinic prepolymer obtained by polymerization of one or more olefins with a coordination catalyst comprising a compound of Ti or V supported on a magnesium halide.

Abstract: Functionalized cyclic olefins and methods for making the same are disclosed. Methods include template-directed ring-closing metathesis ("RCM") of functionalized acyclic dienes and template-directed depolymerization of functionalized polymers possessing regularly spaced sites of unsaturation. Although the template species may be any anion, cation, or dipolar compound, cationic species, especially alkali metals, are preferred. Functionalized polymers with regularly spaced sites of unsaturation and methods for making the same are also disclosed. One method for synthesizing these polymers is by ring-opening metathesis polymerization ("ROMP") of functionalized cyclic olefins. The metathesis catalysts for both RCM and ROMP reaction are ruthenium or osmium carbene complex catalysts of the formula ##STR1## where M is Os or Ru; R and R.sup.1 each may be hydrogen, C.sub.2 -C.sub.20 alkenyl, C.sub.2 -C.sub.20 alkynyl, C.sub.1 -C.sub.20 alkyl, aryl, C.sub.1 -C.sub.20 carboxylate, C.sub.1 -C.sub.20 alkoxy, C.sub.2 -C.sub.

Abstract: A microgel is produced by a two-stage process wherein the monomers are first polymerized in the absence of solvent for a controlled period, and in a second stage solvent is added and polymerization is completed. The polymer is preferably a polyurethane formed from a polyalkylene glycol, a triol and a diisocyanate. The molecular weight is typically 100,000 to 200,000. The microgels form granules which may be compressed into solid form. Such solid forms containing an active agent, such as a protein, are useful as sustained delivery devices.

Abstract: A novel process is provided which integrates the cracking of hydrocarbon containing feedstocks with the olefins purification and olefins derivative process utilizing dilute olefin feedstocks.

Abstract: Protected, functionalized telechelic polymers, hydrogenated and/or deprotected analogues thereof, and processes to prepare these polymers are disclosed. In the invention, a lithium initiator is added to a compound having at least two independently polymerizable vinyl groups to form a dilithium initiator. Monomer is then added to grow or polymerize polymer arms having living ends and the living ends functionalized.

Abstract: The present invention is a free radical bulk polymerization process for the preparation of high molecular weight polymers from vinyl aromatic monomers, characterized in that the polymerization is conducted in the presence of a vinyl acid containing either a sulfur or phosphorus atom within the acid functional group.

Abstract: A process is described for the preparation of olefin polymers by polymerization over a transition metallocene catalyst with the addition of at least one phosphorus(III) compound, sterically hindered amine, sterically hindered phenol or acid scavenger, alone or in combination with one another; the polymers which can be obtained in this way are of outstanding stability.

Abstract: A photo-curable resin composition suitable as a material for photo-fabricating and capable of producing cured products with excellent mechanical strength and high heat resistance. Further disclosed is a process for molding a resin-based mold which provides superior molding dimensional precision and superb repetition durability. The resin composition contains a monomer component containing (A) 30-70 wt % of a polyfunctional unsaturated monomer having a cyclic structure and (B) 70-30 wt % of a monofunctional unsaturated monomer having a cyclic structure of which the homopolymer has a glass transition temperature (Tg) of 70.degree. C. or higher; (C) a photo-initiator; and (D) an inorganic filler having an average particle diameter or an average fiber length of 1-50 .mu.

Abstract: Processes for the living polymerization of olefin monomers with terminal carbon-carbon double bonds are disclosed. The processes employ initiators that include a metal atom and a ligand having two group 15 atoms and a group 16 atom or three group 15 atoms. The ligand is bonded to the metal atom through two anionic or covalent bonds and a dative bond. The initiators are particularly stable under reaction conditions in the absence of olefin monomer. The processes provide polymers having low polydispersities, especially block copolymers having low polydispersities. It is an additional advantage of these processes that, during block copolymer synthesis, a relatively small amount of homopolymer is formed.

Abstract: A composite tack-free film having a film substrate with opposing surfaces, bearing on at least one of said surfaces a highly crosslinked, film-forming acrylate composition containing from about 25 to about 78 of at least one lower alkyl (meth)acrylate ester and from about 10 to about 60 percent vinyl acetate and at least about 1 percent of a polar monomer, wherein the acrylate composition is capable of attaching temporarily to polyimide film surface to provide a substantially air-tight seal and being cleanly removable from said polyimide film surface leaving no visible residue, even after being subjected to elevated temperatures.

Abstract: A process of polymerizing ethylene with a catalyst using a single metallocene catalyst comprising a bridged metallocene compound having two cyclopentadienyl rings, one substituted with a bulky group in a distal position and one substituted such that a fused ring, substituted or unsubstituted, is formed, which produces a copolymer of ethylene. The metallocene catalyst promotes simultaneous oligomerization of a fraction of ethylene to form a comonomer in situ and copolymerization of the remaining ethylene and the comonomer to form a copolymer.

Abstract: The invention comprises a method of inhibiting the formation of foulants and residues, gums and precipitates, polymeric tars and other highly oxidized carbonaceous tars which can be formed in the process of manufacture and recovery of acrylonitrile. The method comprises adding to the liquid or gaseous phases passing through, or stored in acrylonitrile process equipment, an effective antifouling amount of a dispersant which is stable in the environment within an acrylonitrile process and is neutral to the equipment used for the manufacture of acrylonitrile.

Abstract: A resin composition comprises an EVOH (A) and a thermoplastic polymer (B) having at least one functional group selected from the group consisting of boronic acid group, borinic acid group and boron-containing groups convertible into boronic acid group or borinic acid group in the presence of water. The composition may further comprise a thermoplastic polymer (C) other than (A) or (B). The resin compositions thus obtained have good compatibility and give molded products having superior transparency and good mechanical properties.

Abstract: This invention relates to block polymers containing both crystalline and elastomeric blocks, the block copolymer having an A block and a B block. The A block is a polyethylene or an ethylene polymer optionally containing an alpha-olefin and is generally crystalline. The B block contains an ethylene, .alpha.-olefin copolymer segment and optionally contain an ethylene, .alpha.-olefin, non-conjugated diene terpolymer segment. If the B block contains a diene containing segment, the diene containing segment is furthest from the junction of the A and the B blocks. Also disclosed is a process for manufacture of the block copolymers and methods for coupling the block copolymers. Coupled block copolymers are useful as thermoplastic elastomers exhibiting physical properties approaching those of crosslinked EP or EPDM elastomers, but showing thermal processability after coupling.

Abstract: Process for the gas-phase polymerization of ethylene and ethylene mixtures with .alpha.-olefins CH.sub.2 .dbd.CHR in the presence of a high activity catalyst comprising a titanium compound containing at least one Ti-halogen bond, supported on magnesium dichloride in active form said process comprising the steps of: (a) contacting the catalyst component; (b) prepolymerizing ethylene or ethylene mixtures with .alpha.-olefins in order to produce a polymer amount of from approximately 5 g per g of solid component, up to an amount corresponding to about 10% of the final catalyst yield; (c) polymerizing ethylene or ethylene mixtures with .alpha.-olefins in the gas-phase, in the presence of the prepolymer-catalyst system obtained in (b), while maintaining in the gas phase a molar concentration concentration of the alkane comprised between 20 and 90% with respect to the total gases.

Abstract: A process is described for the preparation of olefin polymers by polymerization over a transition metallocene catalyst with the addition of at least one phosphorus(III) compound, sterically hindered amine, sterically hindered phenol or acid scavenger, alone or in combination with one another; the polymers which can be obtained in this way are of outstanding stability.

Abstract: Branched low-pressure polyethylenes are prepared by oligomerization of ethylene on a nickel-containing catalyst and polymerization of the oligomers obtained, if appropriate in the presence of ethylene, on a chromium-containing catalyst.

Abstract: Branched low-pressure polyethylenes are prepared by oligomerization of ethylene on a nickel-containing catalyst and polymerization of the oligomers obtained, if appropriate in the presence of ethylene, on a chromium-containing catalyst.

Abstract: A process for producing a polymer containing immobilized cyclodextrin comprising reacting a cyclodextrin derivative with an acid halide monomer of an .alpha.,.beta.-unsaturated acid or a derivative thereof or with an .alpha.,.beta.-unsaturated acid monomer having a terminal isocyanate group or a derivative thereof, said cyclodextrin derivative being obtained by reacting cyclodextrin with a carbonyl halide, an acid anhydride or a compound of one of the following formulas, etc.A polymer having immobilized cyclodextrin can be obtained wherein one unit of the cyclodextrin derivative is immobilized with respect to the monomer and which shows high reactivity in the polymer reaction.

Abstract: Nondigestible fat compositions useful as replacements for triglyceride fats or oils in foods are disclosed. These compositions have relatively flat solid Fat Content (SFC) profile slopes between typical room temperature and body temperature. The nondigestible fat compositions comprise a liquid nondigestible oil and nondigestible solid polyol polyester particles dispersed in the oil in an amount sufficient to control passive oil loss. The solid polyol polyester particles of the composition herein comprise from about 10% to 50% polyol polyester polymer and from 50% to about 90% polyol polyester monomer. The polyol polyester material which forms these solid particles must contain a relatively high proportion of long chain saturated fatty acid ester groups. Edible fat-containing products comprising these nondigestible fats can be less waxy tasting due to the lower level of solids required for passive oil loss control.

Abstract: A novel process for preparing an acrylic polymer containing a tertiary amino group which is not quaternized or not salt formed and having a high molecular weight, characterized by reacting an aqueous solution of an acrylic monomer containing a tertiary amino group with carbonic acid gas to generate an acrylic monomer containing a tertiary ammonium carbonate, homopolymerizing the obtained monomer or copolymerizing the obtained monomer with the other vinyl monomer copolymerizable with the obtained monomer to give a polymer containing a structural unit of a tertiary ammonium carbonate, and decarboxylating the polymer with heating and/or reducing the pressure is provided, and particularly, an article containing a water-soluble vinyl polymer which contains at least 5% by mole of the above-mentioned structural unit of a tertiary amino group and whose intrinsic viscosity [.eta.] is at least 1 dl/g is available as an excellent dewatering agent for sludge.

Abstract: A process for processing a cracked feed stream so as to provide a feed stream, having a requisite concentration of isobutylene and butene-1, to a polymerization unit for polymerization of isobutylene.