Provided is a low-odor polymer which is soluble in a solvent and with which a work environment load can be reduced. In addition, provided are a curable composition using the polymer and a cured product of the curable composition. The vinyl-based polymer of the present invention comprises a terminal structure derived from one or more of 3- to 20-mer of a (meth)acrylic monomer, wherein an acid value is 35 to 300 mgKOH/g.

The present disclosure relates to a one-pot process for synthesizing functional compounds or functional polymers by reacting an aldehyde with an alkyl-zinc or polymeryl-zinc composition in the presence of a specific Lewis acid, wherein the reaction is rapid and facile at high temperatures.

The present invention relates to a process for producing a stable fluorinated latex by emulsion polymerization in the absence of fluorinated surfactant, stabilized by an amphiphilic block copolymer formed in situ. The invention also concerns the aqueous dispersion comprising the fluorinated polymer chains and the amphiphilic block copolymers, obtained by this process.

A composition includes: at least one polymer represented by formula (1), formula (2), or both; and a solvent. A.sup.1 and A.sup.2 are each independently a structural unit having 2 or more carbon atoms; a plurality of A's are the same or different and a plurality of A.sup.2s are the same or different; n1 and n2 are each independently an integer of 2 to 500; R.sup.1, R.sup.2, and R.sup.3 are each independently an organic group having 1 or more carbon atoms, or R.sup.1 and R.sup.2 taken together represent a ring together with X.sup.1, Y.sup.1, and P; R.sup.1 and R.sup.2 are the same or different; X.sup.1, Y.sup.1, and Y.sup.2 are each independently a single bond, —O—, or —NR.sup.4—; R.sup.4 is an organic group having 1 or more carbon atoms; and Z.sup.1 and Z.sup.2 are each independently hydrogen or an organic group having 1 to 15 carbon atoms.

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A medium for an electro-optic element includes a first block copolymer unit including at least one of a first di-block copolymer and first tri-block copolymer and at least one of a first donor compound and first acceptor compound conjugated with the at least one of the first di-block copolymer and first tri-block copolymer, thereby forming the first block copolymer unit. The medium further includes a second block copolymer unit including at least one of a second di-block copolymer and second tri-block copolymer and at least one of a second donor compound and a second acceptor compound conjugated with the at least one of the second di-block copolymer and second tri-block copolymer, thereby forming the second block copolymer unit. The first block copolymer unit is polymerized with the second block copolymer unit.

The present invention discloses novel calibrants containing between 1 and 5 iodine atoms and methods of making them using linear polymers, hyperbranched polymers, and biological polymers (including but not limited to proteins and peptides.) Methods of using the calibrants are also disclosed, such as mass spectrometry. The novel calibrants disclosed herein have a more cost- and time-efficient synthesis than other calibrants.

A block copolymer is provided. The block copolymer includes a first block including repeat units represented by formula (I), and a second block connected to the first block and including repeat units represented by formula (II) or (III). The disclosure also provides a method for preparing the block copolymer and a thin film structure including the same.

The compatibility between silica fillers and synthetic rubbers which are synthesized utilizing lanthanide-based catalyst systems, such as neodymium catalyst systems can be improved by terminating the polymerization with a vinyl silane terminating agent. In doing so the vinyl silane is allowed to react with the polymer chain ends of the neodymium rubber to functionalize the chain ends of the polymer chains with silicon containing groups. This results in the rubber having better characteristics for utilization in tire rubber formulations, such a tire tread formulations, that exhibit improved wear characteristics and lower rolling resistance. The process for the synthesis of such functionalized polydiene rubber comprises (1) polymerizing a diene monomer in the presence of a lanthanide-based catalyst system, and (2) terminating the polymerization with a vinyl silane terminator. The functionalized polydiene rubber composition made by this method is comprised of a polydiene rubber which is functionalized at its chain ends with a silicon containing group.

Provided are a terminally modified diene-based polymer having excellent mechanical properties and also a method for producing the same. The terminally modified diene-based polymer is obtainable by allowing a diene-based polymer terminated with ketone or aldehyde groups to react with an aminophosphonic acid compound represented by general formula (1) or (2): ##STR00001##
wherein in formulas (1) and (2), R.sub.1 and R.sub.4 each represent a C.sub.1-10 alkanediyl group, R.sub.2 and R.sub.3 may be the same or different and each represent hydrogen, a C.sub.1-3 alkyl group, or a phenyl group, R.sub.5, R.sub.6, R.sub.8, and R.sub.9 may be the same or different and each represent hydrogen, a C.sub.1-3 alkyl group, or a phenyl group, and R.sub.7 represents hydrogen or a hydroxyl group.

The present invention pertains to an aqueous dispersion of a vinylidene fluoride polymer having a high molecular weight and possessing a substantially linear structure, leading to reduced amount of gels/insoluble fractions, to a method for its preparation and to its use for the manufacture of electrochemical cell components, such as electrodes and/or composite separators or for the manufacture of membranes.