摘要:
A basic copolymer whose main chain is cross-linked which comprises about 6 to about 98% by weight of recurring units of Formula (A) or (B), ##STR1## wherein R.sub.1, R.sub.2 and R.sub.3, which may be the same or different, each represents a hydrogen atom or a hydrocarbon group selected from the group consisting of C.sub.1-20 alkyl groups, C.sub.3-10 cycloalkyl groups, C.sub.3-8 alkenyl groups, C.sub.6-15 aryl groups, C.sub.7-12 arylalkyl groups and C.sub.1-15 aminoalkyl groups; and X is an acid radical, and about 2 to about 94% by weight of cross-linked units based on the total weight of the recurring units of Formula (A) or (B) and the cross-linked units and, if desired, up to about 92% by weight of units of a monoethylenically unsaturated monomer or a conjugated monomer based on the total weight of the recurring units of Formula (A) or (B), the cross-linked units and the units of the monoethylenically unsaturated monomer or the conjugated monomer.
摘要:
A mixture of xylenols and cresols is contacted with a zeolite with aperture of 5.5 A or more containing at least one cations selected from lithium, potassium, cesium, rubidium, calcium, barium, strontium, cadmium, chromium, molybdenum, manganese, iron, nickel, cobalt, and ammonium to separate xylenols from cresols.
摘要:
A method of producing a polar, porous polymer comprising polymerizing a monomer mixture comprising:(A) about 2 to about 98 percent by weight of at least one cross-linkable monomer having a plurality of CH.sub.2 .dbd.C
摘要:
Novel imidazolylmethylstyrene compounds which are basic compounds and have excellent resistance to oxidation and high polymerizability are disclosed. The basic compound of the present invention is prepared by reacting a halogenomethyl-styrene with an imidazole compound, and can be used, for example, as a curing agent for epoxy resins. The imidazolymethylstyrene compounds are readily homopolymerized or copolymerized to provide linear homopolymers, linear copolymers or cross-linked copolymers having pendant imidazolylmethylphenyl groups. These polymers have greater resistance to oxidation than the homologues, and are useful as an ion exchange resin, extractant of metals, sizing agent and antistatic agent.
摘要:
A nitrogen-containing acrylic copolymer composition comprising:(i) a linear copolymer comprising about 2 to about 90% by weight of recurring units of Formula (A), ##STR1## wherein R.sub.1 and R.sub.2, which may be the same or different, each represents a hydrogen atom, a C.sub.1-20 alkyl group, a C.sub.3-10 cycloalkyl group, a C.sub.3-8 alkenyl group, a C.sub.1-15 aminoalkyl group, a C.sub.6-20 aryl group or a C.sub.7-12 arylalkyl group,based on the total weight of the linear copolymer, about 10 to about 98% by weight of recurring units of formula (B), ##STR2## wherein R.sub.3 represents a hydrogen atom, a methyl group, a C.sub.1-6 alkoxy group, a halogen atom or a --CH.sub.2 COOR.sub.6 group wherein R.sub.6 represents a hydrogen atom, a C.sub.1-10 alkyl group or a C.sub.7-12 arylalkyl group,R.sub.4 represents a hydrogen atom, a C.sub.1-20 alkyl group, a C.sub.3-10 cycloalkyl group, a C.sub.3-10 halocycloalkyl group, a C.sub.6-20 aryl group, a C.sub.6-20 haloaryl group, a C.sub.7-12 arylalkyl group, a C.sub.1-12 haloalkyl group, a C.sub.1-12 hydroxyalkyl group, a C.sub.2-12 alkoxyalkyl group, a tetrahydrofurfuryl group, a glycidyl group, a --CH.sub.2 --CH.sub.2 --O--.sub.m R.sub.7, wherein R.sub.7 is a C.sub.1-8 alkyl group and m is an integer of 1 to 30, or a C.sub.3-20 dialkylaminoalkyl group, andR.sub.5 represents a hydrogen atom or a --COOR.sub.8 group wherein R.sub.8 is a hydrogen atom or a C.sub.1-20 alkyl group,based on the total weight of the linear copolymer and 0 to about 88% by weight of recurring units of at least one of Formulae (C.sup.1), (C.sup.2) and (C.sup.3), ##STR3## wherein V and W each independently is a hydrogen atom, a C.sub.1-8 alkyl group, a phenyl group or a halogen atom,based on the total weight of the linear copolymer,(ii) about 0.1 to about 10% by weight of an amine-modified epoxy compound where all or part of the epoxy group has been replaced by the unit of Formula (I), ##STR4## wherein R.sub.12 and R.sub.13 each independently is a hydrogen atom, a C.sub.1-20 alkyl group, a C.sub.3-10 cycloalkyl group, a C.sub.1-12 hydroxyalkyl group, a C.sub.1-15 aminoalkyl group, a H--NH--CH.sub.2 --CH.sub.2 --.sub.n wherein n is an integer of 1 to 8, a C.sub.6-15 aryl group or a C.sub.7-12 arylalkyl group,based on the weight of the linear copolymer and(iii) about 0.05 to about 12% by weight of a blocked polyisocyanate where all or part of the isocyanate groups has been replaced by an alcohol and/or an amine, based on the weight of the linear copolymer.
摘要:
An isotope separation apparatus comprises a plurality of independent developing units, each comprising 2 to 20 adsorbent-packed columns forming a continuous developing circuit or passageway, and the developing units are connected to at least one common main pipe for supplying an isotope mixture solution, a regenerating agent solution, or an eluent solution. Also, in a further embodiment the developing units are connected to common liquid-discharge main pipes.The separation or concentration of isotopes such as uranium isotopes, nitrogen isotopes, boron isotopes, etc., is performed by continuously developing the isotope mixture solution passed through the individual adsorbent-packed columns successively in each developing units.
摘要:
A process for continuously separating uranium isotopes by an oxidation-reduction reaction using an anion exchanger comprising the steps of feeding an eluant containing a deactivated oxidizing agent and a deactivated reducing agent to an anion exchanger to regenerate them and to form an oxidizing agent zone in the anion exchanger, and reusing the regenerate reducing agent and the oxidizing agent zone for further uranium isotope separation.
摘要:
Novel benzimidazolyl compounds which are basic compounds and have high polymerizability are disclosed. The basic compound of the present invention is prepared by reacting a vinylbenzaldehyde with an o-phenylenediamine compound, and can be used, for example, as a monomer for polymers. The benzimidazolylstyrene compounds are readily homopolymerized or copolymerized to provide linear homopolymers, linear copolymers or cross-linked copolymers having pendant benzimidazolylphenyl groups. These polymers have greater resistance to oxidation and chemicals than the homologues, and are useful as ion exchange resins, and as extractants of metals.
摘要:
At least one resin component which is selected from a biodegradable resin and a plant-based resin, and a flame retardancy-imparting component are kneaded to obtain a resin composition having flame retardancy. This resin composition makes it possible to apply the environment-friendly resin such as the biodegradable resin and the plant-based resin, for example, polylactic acid and polybutylene succinate to exterior bodies of home appliances. Particularly, in the case where polylactic acid is used with the acetylacetonatoiron as the flame-retardant component, a resin composition having excellent flame retardancy can be provided as a non-halogen material.
摘要:
A resin composition is provided which is made flame retardant using a non-halogen flame retardancy-imparting component, and the resin composition containing HIPS as a resin component is particularly provided. A salt of succinic acid and/or a salt of malic acid or a metal sulfide is used as the flame retardancy-imparting component and this component is kneaded with the resin component such as a polystyrene polymer to produce the resin composition. Further, the resin composition is injection-molded into exterior bodies of home electric appliances. The use of molybdenum disulfide, disodium succinate or dipotassium succinate, as the flame retardancy-imparting component makes it possible to provide the resin composition of excellent flame retardancy as a non-halogen material.