Abstract:
PROBLEM TO BE SOLVED: To enable hydroformylating a polymer in the state of an aqueous dispersion by using a specific catalyst under specific conditions. SOLUTION: This method for hydroformylating an ethylenic unsaturated polymer comprises reacting (C) carbon monoxide and (D) hydrogen with (B) the aqueous dispersion of a polymer having ethylenic unsaturated double bonds in the presence of (A) a hydroformylation catalyst under a condition that the catalyst is at least partially impregnated into the phase of the polymer or at least into the boundary of the polymer/aqueous phase. The component A is preferably the salt or complex of cobalt, rhodium or ruthenium, especially rhodium. The reaction conditions are preferably selected from a temperature range of 50-150 deg.C and a pressure range of 20-300 bars. The polymer dispersion preferably contains a (co)polymer produced from 10-100wt.% of at least one conjugated diene and 0-90wt.% of at least one monoolefinic unsaturated monomer capable of copolymerizable with the diene.
Abstract:
Die vorliegende Erfindung betrifft ein Verfahren zur Hydroformylierung von Polymerisaten, die ethylenisch ungesättigte Doppelbindungen enthalten, durch Umsetzung wäßriger Dispersionen der Polymerisate mit Wasserstoff und Kohlenmonoxid in Gegenwart geeigneter Hydroformylierungskatalysatoren. Die Erfindung betrifft weiterhin die nach diesem Verfahren erhältlichen Polymerisatdispersionen sowie die hydroformylierten Polymerisate selbst.
Abstract:
Polymer (I) derived from the following monomer mixture (wt.%) is new: (A) a monomer whose homopolymer has a glass transition temperature (Tg) below 30 degrees C (45-74.9); (B) a monomer whose Tg is above 50 degrees C (25-54.9); (C) a crosslinking monomer having at least two nonconjugated vinyl groups (0.001-0.1); (D) a monomer containing acid groups (0-4); and (E) other monomer(s) (0-2). Independent claims are also included for the following: (1) a coating composition containing a binder comprising (I) produced by radical-initiated aqueous emulsion polymerization; and (2) an aqueous polymer dispersion comprising (I).
Abstract:
Aq. polymer dispersions, obtd. by radical polymerisation of monomers in aq. emulsion in presence of a polymeric protective colloid (A) with an average mol. wt. (Mw) of >20,000. Colloid (A) is a copolymer of 5-50 wt. % unsatd. monomer(s) with acid or acid anhydride gp(s). (monomers I), 0.1-80 wt.% (meth)acrylate ester(s) of at least 10C aliphatic alcohols (monomers II), 0-94.9 wt.% "principal monomers", comprising 1-9C alkyl (meth)acrylates, vinyl esters of 1-20C carboxylic acids, up to 20C vinylaromatics, unsatd. nitriles, vinyl halides and/or 2-8C aliphatic hydrocarbons with 1 or 2 double bonds (monomers III) and 0-60 wt.% other monomers (IV). Also claimed is the above process for the prodn. of aq. polymer dispersions.
Abstract:
A process for the hydroformylation of polymers containing ethylenic double bonds (I) by reacting (I) with carbon monoxide (CO) in presence of a hydroformylation catalyst, the reaction being carried out in an aqueous dispersion of (I) under conditions such that the catalyst is at least partly in the polymer phase or at least partly in the polymer/water interface. Also claimed are (i) polymer dispersions obtained by this process and (ii) polymers obtained from these dispersions by removing the aqueous solvent.
Abstract:
Masas de moldeo con una concentración en volumen de pigmentos 70 %, que contienen al menos un polímero como agente aglutinante, caracterizadas porque se obtiene al menos un polímero mediante polimerización acuosa en emulsión, iniciada por medio de radicales, en una mezcla de monómeros etilénicamente insaturados, que esta constituida por de 45 a 74, 9 % al menos de un monómero elegido, entre en peso un éster del alcohol vinílico y un ácido monocarboxílico con 1 hasta 10 átomos de carbono, acrilato de alquilo con 1 hasta 10 átomos de carbono, metacrilato de alquilo con 5 hasta 10 átomos de carbono, acrilato y metacrilato de cicloalquilo con 5 hasta 10 átomos de carbono, maleinato de dialquilo con 1 hasta 10 átomos de carbono y/o fumarato de dialquilo con 1 hasta 10 átomos de carbono, cuyo homopolímero presenta una temperatura de transición vítrea 50°C (monómero B), de 0, 001 a 0, 1 % al menos de un monómero de acción en peso reticulante con al menos dos grupos vinilo no conjugados (monómero C), y opcionalmente, de 0 a 4 % en al menos de un monómero que contenga peso grupos ácidos (monómero D) así como de 0 a 2 % en al menos de otro monómero (monómero E), peso referido respectivamente a la cantidad total de los monómeros etilénicamente insaturados, empleados para la polimerización.
Abstract:
The invention relates to the use of an emulsion polymer in aqueous cosmetic compounds. The emulsion polymer is obtained by emulsion polymerization of a monomer mixture (A) containing 50-100 wt.%, in relation to the monomer mixture, C1-C18 alkyl(meth)acrylates, vinylesters, vinyl aromatics or their mixtures, in the presence of a polymer (B). Said polymer (B) is composed of b1) 5-50 wt.% monomers with at least one ionic group, or group that can be converted to an ionic group, b2) 0-95 wt.% C1-C18 alkyl(meth)acrylates, vinylesters, vinyl aromatics or their mixtures, and b3) 0-50 wt.% other monomers. The glass transition temperature of the polymers obtained from monomer mixture (A) is lower than or equal to the glass transition temperature of polymer (B).