摘要:
An ethylene-vinyl alcohol copolymer has an ethylene content of 20 to 60 mol % and includes a carboxylic acid group and a lactone ring group present at terminals thereof, wherein the molar concentration (Y/Z) of a lactone ring molar content (Y) to a sum (Z) of a carboxylic acid molar content (X) and the lactone ring molar content (Y) is not less than 58 mol %. The ethylene-vinyl alcohol copolymer is excellent in high-temperature thermal stability substantially without thermal decomposition, and is free from odor emanation and coloration even if being processed at a higher temperature.
摘要:
The present invention relates to an unsaturated polyester resin composition comprising (a) an unsaturated polyester, (b) a vinyl group containing organic compound as reactive diluent and (c) a transition metal compound, wherein the resin composition comprises (d) a compound according to formula (1) as reactive diluent whereby n=0-3; R1 and R2 each individually represent H, C1-C20 alkyl, C3-C20 cycloalkyl, C6-C20 aryl, C7-C20 alkylaryl or C7-C20 arylalkyl; X=O, S or NR3 whereby R3=H, C1-C20 alkyl, C3-C20 cycloalkyl, C6-C20 aryl, C7-C20 alkylaryl, C7-C20 arylalkyl, part of a polymer chain or attached to a polymer chain, and the composition comprises at least one transition metal compound (c) selected from the group consisting of Co, Cu, Mn and Fe compounds; and the resin composition comprises, as vinyl group containing organic compound (b), styrene, a styrene derivative, a vinyl ether, a vinyl amine, a vinyl amide or a mixture of at least two of these compounds
摘要:
An automatic dishwashing detergent composition having at least two components. The first component is a polymer containing polymerized residues of at least one C3-C6 carboxylic acid monomer and a lactone end group. The second component is a biodegradable builder selected from among nitrilotriacetic acid, ethylenediaminetetraacetic acid, diethylenetriaminepentaacetic acid, glycine-N,N-diacetic acid, methylglycine-N,N-diacetic acid, 2-hydroxyethyliminodiacetic acid, glutamic acid-N,N-diacetic acid, 3-hydroxy-2,2′-iminodisuccinate, S,S-ethylenediaminedisuccinate aspartic acid-diacetic acid, N,N′-ethylenediamine disuccinic acid, iminodisuccinic acid, aspartic acid, aspartic acid-N,N-diacetate, beta-alaninediacetic acid, polyaspartic acid, salts thereof and combinations thereof.
摘要:
The present invention provides: a photosensitive resin composition, which can form uniform coating films having higher coating film strength without causing surface contamination, decrease of evenness of coating films, decrease of film thickness, and coloring by decomposition in heat treatment of subsequent steps, and has good sensitivity of exposure. The photosensitive resin composition comprises a lactone-ring-containing polymer (A) as an essential component, wherein: the lactone-ring-containing polymer (A) is obtained by carrying out polymerization of comonomers and lactonization at the same time wherein the comonomers include a 2-(hydroxyalkyl)acrylate ester and an acidic-group-containing monomer; and the lactone-ring-containing polymer (A) is obtained by almost quantitatively carrying out lactonization of a 2-(hydroxyalkyl)acrylate ester structural unit.
摘要:
The invention relates to the stabilization of alkaline solutions of peroxide bleaching compounds using, as stabilizing agent, a water-soluble poly-.alpha.-hydroxyacrylic acid salt which in the sodium salt form has an average molecular weight Mw from 2000 to 10,000 and to the preparation of such a salt.
摘要:
Hydroxyl terminated polymeric C.sub.5 -C.sub.9 lactone adducts are made by reacting a C.sub.5 -C.sub.9 lactone with the reaction product of a C.sub.2 -C.sub.10 olefin polymer or a halogenated derivative thereof having a number average molecular weight of 300 to about 10,000, with an amine containing from 2 to 60 total carbon atoms and from 1 to 12 nitrogen atoms. The resulting adducts are useful per se as oil soluble dispersant additives. They are also useful in fuel and lubricating oil compositions, as well as in concentrates and additive packages.
摘要:
Lactone polyol ester reaction products of hydrocarbon substituted lactone carboxylic acid, with polyols such as pentaerythritol and their derivatives are useful additives in oleaginous compositions, such as varnish-inhibiting dispersants for lubricating oils, and fuels.
摘要:
The invention relates to a process for the production of cyclocopolymers, characterised in that compounds of the general formula 1
In which n is 1 - 4; R.sup.3 is H, CH.sub.3 or --CH.sub.2 --CH; Y is OH or NH.sub.2 ; and R.sup.4 and R.sup.5 may be identical or different and mean hydrogen or (C.sub.1 -C.sub.4)-alkyl, Preferably in equimolar amounts, and possibly with the use of further unsaturated compounds which are copolymerisable with compounds of the formula 1 and to copolymers obtainable by the process of the invention.
Where R means hydrogen, an aliphatic or aromatic radical, are copolymerised with unsaturated compounds of the general formula 2
In which R.sup.1 and R.sup.2 may be identical or different and mean H, CH.sub.3, C1 or Br; and X means
摘要:
The present invention relates to a process for producing lactonized acrylic fibers having a high Young''s modulus and improved elongation at break by treating an acrylic fiber made from an acrylic copolymer containing at least 50 percent by mol of acrylonitrile and a monomer having a hydroxyl group and/or a monomer capable of forming a hydroxyl group in an acid medium at a pH of not more than 2, said medium containing an organic and/or inorganic acid present in such concentrations as to avoid swelling or dissolving the treated material.