摘要:
The present invention provides a phosphonate-containing polymer and use thereof and a phosphonate-containing polymer viscosity reducer for drilling fluid. The phosphonate-containing polymer comprises structural units expressed by formula (1), structural units expressed by formula (2), and structural units expressed by formula (3) and/or structural units expressed by formula (4), wherein, the ratio of the mole number of the structural units expressed by formula (1), mole number of the structural units expressed by formula (2), and total mole number of the structural units expressed by formula (3) and structural units expressed by formula (4) is 10-85:10-75:5-55. The phosphonate-containing polymer still has outstanding viscosity reducing effect after high-temperature aging when it is applied in brine drilling fluids and high-density drilling fluids.
摘要:
The invention relates to a method for the production of polymers, comprising one or more of the recurring structural units of formula (1), where R1 is hydrogen, methyl, or ethyl, A is C1-C8-alkylene, Q+ is H+, NH4+, Na+, K+, ½ Mg++, ½ Ca++, or ½ Zn++, and where Q+ has a different meaning than H+ or NH4+ in 50 to 100 mol % of the structural units of formula (1), and one or more structural units derived from one or more further monomers, characterized in that the corresponding salts of said polymers are suspended in an organic suspension, where however the cations Q+ in the structural units of the formula (1) are NH4+ and optionally also H+, and an ion exchange is carried out by adding one or more bases comprising Na+, K+, Mg++, Ca++, or Zn++ ions.
摘要:
A resin composition for forming a top coat which can be formed on a photoresist film without causing intermixing with the photoresist film, can maintain a stable film coating which is not eluted into a medium during immersion lithography, does not impair pattern profiles during dry exposure (which is not immersion lithography), and can be easily dissolved in an alkaline developer. The resin is a copolymer which has a recurring unit (I) having a carboxyl group, a recurring unit (II) having a sulfo group and a recurring unit obtained by copolymerizing fluoroalkyl(meth)acrylates having 1 to 20 carbon atoms in a fluoroalkyl group thereof other than a recurring unit having a side chain that includes an alcoholic hydroxyl group having a fluoroalkyl group at least in an α-position thereof, the copolymer having a weight average molecular weight determined by gel permeation chromatography of 2,000 to 100,000.
摘要:
A resin composition for forming a top coat which can be formed on a photoresist film without causing intermixing with the photoresist film, can maintain a stable film coating which is not eluted into a medium during immersion lithography, does not impair pattern profiles during dry exposure (which is not immersion lithography), and can be easily dissolved in an alkaline developer. The resin is a copolymer which comprises at least one recurring unit (I) selected from the group consisting of a recurring unit having a group shown by the following formula (1), a recurring unit having a group shown by the following formula (2), and a recurring unit having a carboxyl group, and a recurring unit (II) having a sulfo group, the copolymer having a weight average molecular weight determined by gel permeation chromatography of 2,000 to 100,000, wherein at least one of R1 and R2 is a fluoroalkyl group having 1 to 4 carbon atoms and R3 in the formula (2) represents a fluoroalkyl group having 1 to 20 carbon atoms.
摘要:
The invention relates to mixtures for producing transparent plastic, which mixtures comprise: a) compounds of formulae (I) and (II), wherein R1 independently represents hydrogen or a methyl group, R2 independently represents a linear or branched, aliphatic or cycloaliphatic group or a substituted or unsubstituted aromatic or heteroaromatic group and m and n independently represent an integer ≧0, with m+n>0, b) a prepolymer produced from polymethacrylate and alkyldithiols or polythiols, preferably HS—R3—SH (III), wherein R3 is the same or different from R2 and may have the definition of R2, and c) aromatic vinyl compounds.
摘要:
The present invention relates to mixtures for preparing transparent plastics, encompassing a) a prepolymer prepared from compounds of the formula (I) and (II) where each R1, independently of the others, is hydrogen or a methyl radical, each R2, independently of the others, is a linear or branched, aliphatic or cycloaliphatic radical, or a substituted or unsubstituted aromatic or heteroaromatic radical, and each of m and n, independently of the other, is a whole number greater than or equal to 0, where m+n>0, and from compounds of the formula (III), or from alkyl dithiols or from polythiols, preferably HS—R3—SH (III) where R3, identical with or different from R2, can be as defined for R2, and b) at least one monomer (A) capable of free-radical polymerization and having at least 2 methacrylate groups, and c) aromatic vinyl compounds, such as styrene, and d) if appropriate, a monomer capable of free-radical polymerization and having at least two terminal olefinic groups whose reactivity differs, and/or e) if appropriate, at least one monomer (B) from the group of the methacrylates, preferably 2-hydroxyethyl methacrylate.
摘要:
The instant invention is directed to a polymer, having an intrinsic viscosity of 1.0 to 7.0, preferably 1.5 to 5.0, dl/g in 1.0M NaCl, prepared from:(A) 2.5 to 45%, by weight, of at least one unsaturated carboxylic acid, or its salt;(B) 5.0 to 85%, by weight, of at least one unsaturated sulfonic acid, or its salt;(C) 2.5 to 15%, by weight, of at least one unsaturated cationic-containing monomer; and(D) 0 to 90%, by weight, of at least one unsaturated non-ionic monomer.The instant invention is also directed to the polymer in combination with an aqueous clay dispersion and the use of the admixture as a filtration aid in drilling muds.
摘要:
The invention relates to new, pharmaceutically active copolymers with heparin-like activity, pharmaceutically acceptable salts thereof and a process for their preparation. The new copolymers comprise the units of the formula I ##STR1## wherein X stands for hydrogen or methyl and Y is hydrogen, units of the formula III ##STR2## optionally units of the formula II ##STR3## wherein Z' is hydrogen, and chain terminating units, formed from the units of the formulae I, III and optionally II under the conditions of copolymerization, in a statistical arrangement, and the pharmaceutically acceptable salts thereof, which contain, in addition to the above chain-members, units of the formulae IV and/or V ##STR4## wherein A is a cation/ satisfactorily replace the organogenic heparin, or give a synergistic combination with that,
摘要翻译:本发明涉及具有肝素样活性的新的药物活性共聚物及其药学上可接受的盐及其制备方法。 新的共聚物包含式I的单元/ I /其中X代表氢或甲基,Y是氢,式III的单元/ III /任选的式II单元/ IMAGE /其中Z'为氢,以及由式I,III和任选II的单元在统计学排列的共聚条件下形成的链终止单元及其药学上可接受的盐,除了 上述链成员,式IV和/或V的单元/ IV / / V /其中A
摘要:
Provided are a curable composition including a compound expressed by General Formula (1) below; a polymerization initiator; and a chain transfer agent, and a cured polymer product. In General Formula (1), m represents an integer of 1 to 4, and n represents an integer of 1 to 4. Here, a sum of m and n is not greater than 5. MA represents a hydrogen ion, an inorganic ion, or an organic ion. Here, an inorganic ion and an organic ion may be bivalent or higher ions. Each of R1 and R2 independently represents a hydrogen atom or an alkyl group.