摘要:
The present invention relates to sodium carbonate (Na 2 CO 3 ) having a certain particle size distribution and its use in preparing poly(aryl ether ketone)s, especially PEEK. Poly(aryl ether ketone)s made using the described sodium carbonate also make up a part of the invention. The present invention relates also to a method for providing a sodium carbonate having a certain particle size distribution, which is especially well suited for the preparation of poly(aryl ether ketone)s.
摘要翻译:本发明涉及具有一定粒度分布的碳酸钠(Na 2 CO 3)及其在制备聚(芳醚酮),特别是PEEK中的用途。 使用所述碳酸钠制成的聚(芳醚酮)也构成了本发明的一部分。 本发明还涉及提供具有一定粒度分布的碳酸钠的方法,其特别适用于制备聚(芳基醚酮)。
摘要:
The present invention describes a process for preparing a poly(aryl ether ketone) by reacting a nucleophile with 4,4'-difluorobenzophenone (4,4'-DFBP) that is improved through the use of 4,4'-DFBP that meets one or more particular purity conditions. Also described are improved poly(aryl ether ketone) produced using the invention 4,4'-DFBP. Amounts of 2,4'-difluorobenzophenone (2,4'-DFBP), 4-monofluorobenzophenone (4-FBP), chlorine, and monochloromonofluorobenzophenone in 4,4'-DFBP are discussed.
摘要:
The presence of certain impurities in diphenyl sulfone have a deleterious effect on the properties of the poly(aryletherketone)s produced therein, including one or more of color, melt stability, molecular weight, crystallinity, etc. and here identify those impurities and provide processes for the removal of such impurities.
摘要:
The present invention relates to a method for the manufacture of a poly(aryl ether) such as a poly(aryl ethersulfone) or a poly(aryl ether ketone) including the use of an organic base having a pKa of at least 10.
摘要:
A method of: providing a solution of a dichloroaromatic compound having an electron-withdrawing group bound to each aromatic ring containing one of the chloride groups; an excess of a dihydroxyaromatic compound; an organic transition metal complex or a transition metal salt; a base; and a solvent; and heating the solution to a temperature at which the dichloroaromatic compound and the dihydroxyaromatic compound react to form an aromatic ether oligomer that is a dihydroxy-terminated compound or a dimetallic salt thereof. Water formed during the heating is concurrently distilled from the solution. A method of curing a phthalonitrile monomer in the presence of an acid and a curing agent to form a phthalonitrile thermoset.
摘要:
The present invention relates to sodium carbonate (Na 2 CO 3 ) having a certain particle size distribution and its use in preparing poly(aryl ether ketone)s, especially PEEK. Poly(aryl ether ketone)s made using the described sodium carbonate also make up a part of the invention. The present invention relates also to a method for providing a sodium carbonate having a certain particle size distribution, which is especially well suited for the preparation of poly(aryl ether ketone)s.
摘要翻译:本发明涉及具有一定粒度分布的碳酸钠(Na 2 CO 3)及其在制备聚(芳醚酮),特别是PEEK中的用途。 使用所述碳酸钠制成的聚(芳醚酮)也构成了本发明的一部分。 本发明还涉及提供具有一定粒度分布的碳酸钠的方法,其特别适用于制备聚(芳基醚酮)。
摘要:
Die vorliegende Erfindung betrifft ein Verfahren zur Herstellung von hydrosilylierbaren Eugenol-basierten Polyethern, deren Umsetzung zu Polyethersiloxanen, sowie die Produkte, die nach diesem Verfahren hergestellt werden können und deren Verwendung als grenzflächenaktive Substanzen.
摘要:
A method of manufacture of a bis(phthalimide) composition includes reacting, in the presence of a solvent and a catalytically active amount of an imidization catalyst selected from quaternary ammonium salts, quaternary phosphonium salts, and combinations thereof, a substituted phthalic anhydride with an organic diamine, wherein conversion to the bis(phthalimide) is 99% complete in less than 6 hours.
摘要:
A method of: providing a solution of a dichloroaromatic compound having an electron-withdrawing group bound to each aromatic ring containing one of the chloride groups; an excess of a dihydroxyaromatic compound; an organic transition metal complex or a transition metal salt; a base; and a solvent; and heating the solution to a temperature at which the dichloroaromatic compound and the dihydroxyaromatic compound react to form an aromatic ether oligomer that is a dihydroxy-terminated compound or a dimetallic salt thereof. Water formed during the heating is concurrently distilled from the solution. A method of curing a phthalonitrile monomer in the presence of an acid and a curing agent to form a phthalonitrile thermoset.
摘要:
An improved method for making a poly(phenylene ether) polymer comprises oxidative polymerization of at least one phenol of the general structure described herein, in the presence of a non-polar solvent, a liquid oxidant, an iron complex, an amine ligand, and a phase transfer catalyst, and in the absence of added water other than any water present in the liquid oxidant and phase transfer catalyst. The method is applicable to phenols that include 2,6-dimethylphenol, 2,4,6-trimethylphenol, 2-methyl-6-phenylphenol, 2,6-diphenylphenol, 2-allyl-6-methylphenol, o -phenylphenol, m -phenylphenol, or combination thereof. The iron complex can be Fe(II)(salen), Fe(III)(salen)Cl, [Fe(III)(salen)] 2 O, or combination thereof, and the liquid oxidant can be aqueous hydrogen peroxide. A poly(phenylene ether) made by the method is also disclosed.