摘要:
Methods of sorbing carbon dioxide on porous, hydrolyzed divinylbenzene/maleic anhydride polymeric sorbents are provided. Additionally, compositions resulting from sorbing carbon dioxide on porous, hydrolyzed divinylbenzene/maleic anhydride polymeric sorbents are provided. The porous polymeric sorbents typically have micropores, mesopores, or a combination thereof and can selectively remove carbon dioxide from other gases such as methane or hydrogen.
摘要:
The present invention provides A RAFT agent of formula (I) where Ra is selected from C1 Br, I, F, CF3, CN, C02R, CONR2, OMe, N02; R is selected from H, optionally substituted alkyl and optionally substituted aryl; and Rb is selected from:
摘要:
A resin composition capable of producing a molded article excellent in transparency, heat resistance, surface hardness, impact resistance and hue is provided. According to the present invention, there is provided a resin composition comprising 15 to 100 mass% of a styrene-based copolymer (A) and 0 to 85 mass% of a methacrylic resin(B), wherein the styrene-based copolymer (A) comprises 45 to 85 mass% of an aromatic vinyl monomer unit, 5 to 45 mass% of a (meth)acrylic ester monomer unit, and 10 to 30 mass% of an unsaturated dicarboxylic anhydride monomer unit, and has a weight average molecular weight(Mw) of 100,000 to 300,000, and a total light transmittance of 89 % or more for a thickness of 2 mm.
摘要:
A silane-modified copolymer comprising constituent units of butadiene, constituent units having a hydrolysable silyl group, and constituent units having acid anhydride functionality is low volatile because of its molecular weight. It may be synthesized from relatively inexpensive reactants.
摘要:
Provided is a novel copolymer that can express an excellent calcium ion-trapping ability. The copolymer of the present invention includes: 0.1 mol% to 99 mol% of a structural unit (A) derived from a monoethylenically unsaturated monocarboxylic acid (salt) monomer (a); 0.1 mol% to 99 mol% of a structural unit (B) derived from a monomer (b) serving as a monoethylenically unsaturated dicarboxylic acid (salt) or an anhydride thereof; and 0.1 mol% to 50 mol% of a structural unit (C) derived from an ether bond-containing hydrophobic monomer (c).
摘要:
The present invention provides polymer compositions of one or more phosphorus acid group containing, polymers of six-membered cyclic methacrylic acid imide comprising a backbone polymer having one or more one methacrylic acid in polymerized form or its salt, quaternary ammonium group, ester side chain group or amide side chain group, wherein the backbone polymers comprise from 60 to 100 wt. %, based on the total weight of monomers used to make the backbone polymer, of total methacrylic acid polymerized units, regardless of their form, and wherein a total of from 7.5 to 95 wt. %, or, preferably, less than 70 wt. % of the methacrylic acid polymerized units comprise methacrylic anhydride groups or six-membered cyclic methacrylic imide groups. The polymer can be readily tailored to boost modulus and modify surface energies when added to polymers like polyolefins, and to make them compatible with other polymers, like polyamide.
摘要:
A method for the preparation of a copolymer containing at least one alkyl methacrylate and maleic anhydride having a number average molecular weight of 4000 to 18000 g/mol proceeds by solution polymerization in the presence of a radical initiator.
摘要:
The invention relates to a chemically modified polymer and to a method for producing the chemically modified polymer, in particular chemically modified polyolefins. First, a polymer to be modified and additionally a modifying reagent are fed to a reaction zone of a reactor and then the polymer and the modifying reagent are fed through the reaction zone, wherein at the same time energy is input into the polymer such that the polymer is activated and a chemical reaction of the activated polymer with the modifying reagent into the modified polymer occurs as a result of the input energy. The dwell time of the polymer in the reaction zone and the temperature in the region of the reaction zone are selected in such a way that polymerization and depolymerization stay approximately in balance.
摘要:
Hydrolyzed divinylbenzene/maleic anhydride polymeric materials and methods of making these polymeric materials are provided. These polymers have a high BET specific surface area that results from the presence of micropores and/or mesopores. The polymers are useful for the adsorption of low molecular weight (e.g., no greater than 150 gram/mole), basic nitrogen-containing compounds.