Abstract: Provided are polymer compositions made by a process comprising: (a) providing a first reactive composition containing: (i) a polymerization initiator that is capable, upon a first activation, of forming two or more free radical groups, at least one of which is further activatable by subsequent activation; (ii) one or more ethylenically unsaturated compounds; and (iii) a crosslinker; (b) subjecting the first reactive composition to a first activation step such that the first reactive composition polymerizes therein to form a crosslinked substrate network containing a covalently bound activatable free radical initiator; (c) contacting the crosslinked substrate network with a grafting composition containing one or more ethylenically unsaturated compounds, wherein the contacting is conducted under conditions such that the grafting composition penetrates into the crosslinked substrate network; and (d) activating the covalently bound activatable free radical initiator at one or more selective regions of the crossli

Abstract: The present invention relates to a method for preparing a superabsorbent polymer that progresses dry mixing of fine powders and a specific powder type of polymer binder when reassembling fine powders generated during the preparation process of a superabsorbent polymer, and thus obviates the necessity for a moisture drying process after reassembling fine powders, thereby reducing thermal losses, improving productivity, and obtaining a superabsorbent polymer having excellent basic absorption properties, and a superabsorbent polymer prepared by the method.

Abstract: The present invention relates to a compound represented by Formula 1, a method for preparing the same, and a modified conjugated diene-based polymer having a high modification ratio and including a functional group derived from the compound.

Abstract: A non-frangible glass article strengthened by a dual or two-step ion exchange (IOX) process, where the first IOX step leads to a depth of compressive layer FSM_DOL>0.1·t or, in some embodiments, FSM_DOL>0.15·t, where t is the thickness of the glass, is provided. The glass article has a compressive stress CS1 after the first IOX step at the surface of from 100 MPa to 400 MPa or, in some embodiments, from 150 MPa to 300 MPa. The first IOX step is followed by a second IOX step, leading to a “spike” compressive stress CS2 after the second IOX step at the surface of greater than 500 MPa or, in some embodiments, 700 MPa. The width of the spike generated by the second IOX is between 1 ?m and 30 ?m, or between 8 ?m and 15 ?m, using the criteria where the magnitude (absolute value) of the slope of the spike is higher than 20 MPa/?m.

Abstract: The super absorbent polymer comprises: a base polymer powder including a first crosslinked polymer of a water-soluble ethylenically unsaturated monomer having at least partially neutralized acidic groups; and a surface crosslinked layer formed on the base polymer powder and including a second crosslinked polymer in which the first crosslinked polymer is further crosslinked via a surface crosslinking agent, wherein the super absorbent polymer has: a fixed height absorption (FHA) of 22.5 g/g to 29 g/g, a saline flow conductivity (SFC) of 35 (·10?7 cm3·s/g) or more, and T-20 of 180 seconds or less.

Abstract: The invention is generally related to a process for producing a relatively high molecular weight poly(methacrylic acid) (“PMAA”) in a water-based system. The process of the invention comprises polymerization of from about 1% to about 20% by weight of methacrylic acid in water or a water-based system in the presence of thiol compound and an azo radical initiator under controlled reaction and process conditions. A process of the invention can be easily scaled up into the pilot scale for producing large quantities of high molecular weight PMAAs. The invention is also related to high molecular weight poly(methacrylic acid)s obtained according to a process of the invention.

Abstract: The present invention relates to a carboxylic acid-modified nitrile-based copolymer latex, a preparation method for producing the same, a latex composition for dip-molding comprising the same, and a molding product prepared therefrom, more particularly to a carboxylic acid-modified nitrile-based copolymer latex capable of ensuring physical properties equivalent to or better than those using sulfur and vulcanization accelerators or cross-linking agents such as zinc oxide without using them by preparing the latex so that a large amount of anionic compound is present on the surface of the latex particles, a preparation method for producing the same, a latex composition for dip-molding comprising the same, and a molding product prepared therefrom.

Abstract: A method for producing a hydrogenated conjugated diene polymer latex includes: a hydrogenation step of dissolving or dispersing a hydrogenation catalyst containing a platinum group element in a latex of a conjugated diene polymer to hydrogenate a carbon-carbon unsaturated bond in the polymer; an insoluble complex formation step of complexing the platinum group element with a complexing agent to form an insoluble complex; and an insoluble complex removing step of continuously feeding the latex which has undergone the insoluble complex formation step to a centrifuge machine and continuously performing a centrifugation operation to continuously remove the insoluble complex from the latex and continuously discharge the insoluble complex out of the centrifuge machine. In the insoluble complex removal step the feed rate of the latex to the centrifuge machine is adjusted to 0.5 to 15 m3/hour, and the centrifugal force in the centrifugation operation is adjusted to 200 to 10,000 G.

Abstract: The present invention relates to a liquid composition comprising a monomer, a (meth)acrylic polymer and a multistage polymer. In particular the present invention it relates to liquid composition comprising a monomer, a (meth)acrylic polymer and a multistage polymer that can be used as a syrup. More particularly the present invention relates also to a process for preparing a liquid composition comprising a monomer, a (meth)acrylic polymer and a multistage polymer.

Abstract: The present invention relates to a compound having the structure of formula (I), wherein R1, R2, R3, R4, R5, R6, and R7 are as described herein. The present invention also relates to a process for the preparation of a compound of formula (I) and to a process for the synthesis of a polymer using the compound of formula (I) through controlled free radical polymerization.

Abstract: The invention includes a method of bonding a perfluoroelastomer material to first surface that includes: (a) contacting a first surface with a bonding agent comprising a curable perfluoropolymer and a curing agent; (b) curing the bonding agent to form a perfluoroelastomer material that is bonded to the first surface. In the practice of such method, the bonding agent may be a solution prepared by dissolving the curable perfluoroelastomer and the curing agent in a solvent. In an embodiment of the invention, the perfluoroelastomer material formed in step (b) is a coating layer or, alternatively, the first surface is a surface of a perfluoroelastomer member and the perfluoroelastomer material formed is a perfluoroelastomer weld.

Abstract: The invention relates to a method of making fluoropolymers without excessive degradation of the polymer backbone. The invention also relates to the fluoropolymers made by this method, and method of using the fluoropolymers.

Abstract: The invention relates to hydroxybenzophenone-based compounds of formula (I) that are used to improve UV, thermal, and thermo-oxidative stability of high performance aromatic polymers in a blend or as end-cappers of the same polymers.

Abstract: Nanoparticles having a plurality of PVP chains covalently bonded to a surface of the nanoparticle are provided, along with their methods of formation and the RAFT agents for the polymerization of the PVP chains. RAFT agents are generally provided, along with their methods of formation and use. Methods are also generally provided for grafting a PVP polymer onto a nanoparticle. In one embodiment, the method includes polymerizing a plurality of monomers in the presence of a RAFT agent to form a polymeric chain covalently bonded to the nanoparticle.

Abstract: A thermally conductive resin molded article having a resin and a thermally conductive filler is provided. The thermally conductive filler is oriented substantially in the thickness direction of the thermally conductive resin molded article. The volumetric filling factor of the thermally conductive filler in the thermally conductive resin molded article is 20-80% by volume. Weld lines in the resin are formed substantially in the thickness direction of the thermally conductive resin molded article. An oil component is included in the thermally conductive resin molded article.

Abstract: The present invention relates to a process for preparing a polyester (meth)acrylate resin (I), said process comprising the steps of: (a) Reacting a thermoplastic polyester with (a1) at least one polyhydric alcohol and, optionally, with (a2) at least one triglyceride, wherein the molar ratio of triglyceride to thermoplastic polyester is between 0 and 0.3, and the molar ratio of polyhydric alcohol to thermoplastic polyester is at most 1.9 to obtain a depolymerization product A that has a hydroxyl number within the range of from 200 to 800 mg KOH/g; (b) Reacting the depolymerization product A with (b1) at least one fatty acid and/or (b2) at least one polybasic carboxylic acid and, optionally, with (b3) at least one polyhydric alcohol to provide a polyester polyol B; (c) Reacting the polyester polyol B with (c) at least one (meth)acrylating compound to provide a (meth)acrylated compound (I), wherein the weight ratio of fatty acid (b 1) to the depolymerization product A is between 0 and 0.

Abstract: The disclosed relates to a polyalkylene carbonate resin composition, and more specifically, to a polyalkylene carbonate resin composition containing polyalkylene carbonate and polyketone. The polyalkylene carbonate resin composition particularly exhibits excellent thermal stability, while having excellent transparency and flexibility, oxygen barrier properties, and mechanical and chemical properties.

Abstract: Methods for providing new transparent near infrared absorptive fine particles having a wide range of near infrared absorption, which are an assembly of hexaboride fine particles, where when a particle shape of the number of particles contained in the assembly is approximately regarded as a spheroid body, there are 20% or more and less than 80% of particles having an aspect ratio [(long axis length)/(short axis length)] of 1.5 or more and less than 5.0, and there are 20% or more and less than 80% of particles having an aspect ratio of 5.0 or more and less than 20.0.

Abstract: The present invention relates to polymers functionalized with non-migratory internal plasticizers.

Abstract: Described herein is a composition comprising: a fluorinated thermosetting plastic comprising repeating divalent monomeric units derived from TFE, HFP and VDF and further comprising a least 0.1-1% by weight iodine endgroups, wherein the fluorinated thermosetting plastic has an MFI greater than 5 g/10 min at 265° C. and 5 kg; and a curing agent.