摘要:
An &agr;-olefin-alkenyl aromatic hydrocarbon-diene copolymer, a process for producing the copolymer, which comprises copolymerizing an &agr;-olefin, a mono-alkenyl aromatic hydrocarbon and a diene in the presence of a specific catalyst, and a molded article comprising the copolymer.
摘要:
Insoluble, only slightly swellable popcorn polymers containing a) from 50 to 99% by weight of styrene and/or at least one monounsaturated styrene derivative, b) from 0.1 to 40% by weight of at least one N-vinyllactam or N-vinylamine and c) from 0.1 to 10% by weight of at least one difunctional crosslinking component, the stated percentages by weight of the individual components a) to c) summing to 100%.
摘要:
The invention relates to a new improved catalyst to produce random copolymers of one or more iso-olefin monomers and one or more para-alkylstyrene monomers. The invention also relates to an improved continuous slurry polymerization process to produce random copolymers using the improved catalyst system. The process is carried out in an anhydrous polymerization system containing a mixture of the monomers in a polar solvent along with a Lewis acid and a stabilizing initiator.
摘要:
A drag-reducing polymer capable of dissolving even in cold fluids is described, along with a method for manufacturing said drag-reducing polymer. The drag-reducing polymer has at least one alpha-olefin monomer with between a four and nine carbon chain length and a co-monomer and has less than 25% monomers (molar content) with carbon chain lengths of 12 or longer. A drag-reducing polymer suspension is also described.
摘要:
Toner binder resins with low odor and excellent charging stability as toners, containing styrene-acrylic copolymers or mixtures thereof, wherein the total content of volatile components is no greater than about 1,500 ppm, the content of volatile components with benzene rings is no greater than about 1,400 ppm, and the content of volatile components with benzene rings and boiling point of below about 200° C. is no greater than about 500 ppm.
摘要:
The present invention relates to a polymer for a chemically amplified resist and a resist composition using the same. The present invention provides a polymer represented by the Formula (1) and a chemically resist composition for deep ultraviolet light comprising the same, The chemically amplified resist composition comprising the polymer represented by the formula (1) of the present invention responds process and can embody a micro-paten of high resolution on a substrate.
摘要:
Disclosed are functionalized styrene derivatives containing carbazole and their anionic polymerization. Styrene derivatives containing carbazole, and homopolymers or copolymers of the styrene derivatives can be synthesized by the anionic polymerization method. Thusly synthesized high molecular weight polymer containing carbazole has advantages of thermal stability, optical properties, and defined molecular weight and limited molecular weight distribution.
摘要:
A shrink film comprising a non-crystalline copolymer of ethylene with an alkenyl aromatic hydrocarbon, and having a transparency, a low temperature shrinking property, a high shrinkage ratio and a small natural shrinkage.
摘要:
A convergent process for synthesizing dendritic polymers typically having an average of three or more generations of branching and a narrow polydispersity. Precursor segments with living ends are coupled via a coupling agent to form branched units, each unit having a single living end. Further reaction with the coupling agent results in formation of a dendritic structure. Reaction of the coupling agent is controlled, such as by slow addition to the reaction mixture over an extended time, to promote development of the dendritic structure. The coupling agent typically has at least two functional groups capable of reacting with the living ends in the reaction mixture. One of the groups is capable of reacting with a living end in an addition reaction such as a vinyl addition, ring opening, or group transfer reaction. Optionally, a monomer can be added with the coupling agent to form longer branches. The structures may be terminated with a suitable functional group or with a linear polymer chain. One or more of the dendritic structures may be incorporated into a larger molecule.