摘要:
Compounds useful as plasticizers and the synthesis thereof are disclosed. In general, the invention includes mixed alkyl/aryl diesters where the aryl and alkyl ester moieties are attached to a cyclic structure at vicinal carbons. The invention also includes synthetic processes of making such compounds.
摘要:
Gegenstand der Erfindung ist die Verwendung von Organosilicon-Copolymeren als Schlagzähmodifizierer, dadurch gekennzeichnet, dass die Organosilicon-Copolymere a) ein oder mehrere Polysiloxan-Einheiten und b) ein oder mehrere Vinylpolymer-Einheiten enthalten und die Einheiten a) und b) kovalent so miteinander verknüpft sind, dass sie eine Kamm-, Block- oder Leiter-Struktur bilden; sowie (Meth) acrylsäureester-Silicon-Copolymere mit Kamm-, Block- oder Leiter-Struktur erhältlich mittels radikalisch initiierter Substanz- oder Lösungspolymerisation von a) einem oder mehreren (Meth) acrylsäureestern, b) einem oder mehreren einfach oder mehrfach ethylenisch ungesättigten Polyorganosiloxanen, und gegebenenfalls c) einem oder mehreren weiteren ethylenisch ungesättigten Monomeren mit der Maßgabe (proviso), dass keine der Komponenten a) bis c) ausgewählt wird aus der Gruppe umfassend mit Alkoxy-Resten substituierte ethylenisch ungesättigte Silane, Hydroxy-substituierte (Meth) acrylsäureester, Hydroxy-substituierte (Meth) acrylsäureamide, Amino-substituierte (Meth) acrylsäureester, ungesättigte Carbonsäuren, ungesättigte Carbonsäureanhydride und PoIyorganosiloxane, die Reste mit freien Hydroxygruppen tragen.
摘要:
An improved non-toxic soft tissue filler is provided. The soft non-toxic tissue filler consists of textured surfaced spherically shaped solid particles of a size range of between about 32 and 90 microns (depending on the concentration that is desired) that are suspended evenly in a gel as a carrier. The solid particles are preferably a non-ceramic cured polymer such as polymethylmethacrylate (PMMA). The gel is a combination of a cellulose polysaccharide such as carboxymethylcellulose (CMC) and an alcohol such as polyvinyl alcohol (PVA) dissolved in water or some other solvent. The filler is used by injection in order to augment a patient's soft tissue as well as to correct soft tissue defects.
摘要:
C4-C7 secondary aliphatic alcohol esters of cyclohexanediacid are especially useful as plasticizers for PVC. In embodiments, these fast fusing plasticizers are useful in plastisol formulations to help improve the processability of flexible PVC material. In preferred embodiments these same plasticizers can be used in blends with other plasticizers, especially slower fusing plasticizers or plasticizers with reduced solvency, such as di-2- propylheptyl phthalate or di-isononyl cyclohexanedicarboxylic acid, to improve processability.
摘要:
A polyvinyl chloride (PVC) composition is provided, comprising an epoxy system, with a heat distortion temperature (HDT) of above 65°C. In an embodiment of the invention the PVC is a rigid PVC. In an embodiment of the invention, the PVC resin is at K value, of between 55 and 70. In an embodiment of the invention, the rigid polyvinyl chloride composition is in the form of an article, sheet, pipe, coating or film.
摘要:
A rubbery polymer comprising: (a) butyl acrylate or a mixture of butyl acrylate and 2-ethylhexyl acrylate, (b) at least one member selected from the group consisting of methyl methacrylate, ethyl methacrylate, methyl acrylate, and ethyl acrylate, (c) acrylonitrile, (d) styrene, (e) a half ester maleate soap, and (f) a crosslinking agent selected from allyl methacrylate, and mixtures of allyl methacrylate with glycidyl methacrylate, trimethylolpropanetrimethyl acrylate, dicyclopentenyloxyethyl methacrylate and divinylbenzene.
摘要:
Foamable compositions based on rigid organic polymers such as polyvinyl chloride contain as the plasticizer a blend of a) a liquid oligomeric ester of phthalic acid, at least one aliphatic dicarboxylic acid or a mixture thereof; and b) a total of at least 15 weight percent, based on total plasticizer, of at least one ester of benzoic acid and/or an alkyl-substituted benzoic acid.