Results 311 to 320 of about 311,275 (344)

Synthesis of copolymers of poly(ether sulfone ether ketone ketone) and poly(ether ketone diphenyl ketone ether ketone ketone) by electrophilic Friedel–Crafts solution polycondensation

Polymers for Advanced Technologies, 2011
AbstractA new monomer, 4,4′‐bis(4‐phenoxybenzoyl)diphenyl(BPOBDP), was synthesized via a two‐step synthetic procedure. A series of novel poly(ether sulfone ether ketone ketone)/poly(ether ketone diphenyl ketone ether ketone ketone) copolymers were prepared by electrophilic Friedel–Crafts solution copolycondensation of isophthaloyl chloride (IPC) with a
Meihua Zhu, Nengwen Ding, Fen Xiao, Mingzhong Cai, Caisheng Song   +4 more
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Heavy Ketones, the Heavier Element Congeners of a Ketone

Accounts of Chemical Research, 2000
AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
Norihiro Tokitoh, Renji Okazaki
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Synthesis and properties of novel copolymers of poly(ether ketone biphenyl ketone ether ketone ketone) and poly(ether ketone sulfone amide)

Journal of Polymer Research, 2014
The monomer containing sulfone and amide linkages, namely N,N'-bis(4-phenoxybenzoyl)-4,4'-diaminodiphenyl sulfone (BPBDAS), was conveniently prepared by the condensation of 4,4′-diaminodiphenyl sulfone with 4-phenoxybenzoyl chloride in N,N-dimethylacetamide (DMAc).
Pingping Wang, Qiang Xu, Yu Wang, Mingzhong Cai, Tao Yan   +4 more
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Synthesis and properties of novel copolymers of poly(ether ketone ether ketone ketone) and poly(ether amide amide ether ketone ketone)

Polymer Engineering & Science, 2013
A new monomer,N,N′‐bis(4‐phenoxybenzoyl)‐m‐phenylenediamine (BPMPDA), was prepared via the reaction ofm‐phenylenediamine with 4‐phenoxybenzoyl chloride inN,N‐dimethylacetamide. Novel copolymers of poly(ether ketone ether ketone ketone) and poly(ether amide amide ether ketone ketone) (PEAAEKK) were synthesized by the modified electrophilic Friedel ...
Yikai Yu, Wenxiang Zhou, Jiangping Qian, Mingzhong Cai   +3 more
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Mutagenicity studies on ketone solvents: methyl ethyl ketone, methyl isobutyl ketone, and isophorone

Mutation Research/Genetic Toxicology, 1988
3 ketone solvents (methyl ethyl ketone (MEK), methyl isobutyl ketone (MiBK), and isophorone) were tested for potential genotoxicity. The assays of MEK and MiBK included the Salmonella/microsome (Ames) assay, L5178Y/TK+/- mouse lymphoma (ML) assay, BALB/3T3 cell transformation (CT) assay, unscheduled DNA synthesis (UDS) assay, and micronucleus (MN ...
John L. O'Donoghue, P.E. Kirby, R.D. Curren, S.R. Haworth, A. Thilagar, Richard D. Phillips, A.M. Rogers-Back, D.L. Putnam, Elizabeth J. Moran, T. E. Lawlor, R.S. Slesinski   +10 more
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Properties of poly(ether ketone ketone) [PDF]

, 2015
This chapter gives a brief account on preparation and processing methods of poly(ether ketone ketone). It is a commonly used high-performance engineering thermoplastics. Important properties of poly(ether ketone ketone) are also given.
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Structural study on poly(ether ether ketone ketone)‐poly(ether biphenyl ether ketone ketone) copolymers

Macromolecular Rapid Communications, 1996
AbstractStructures of poly(ether ether ketone ketone)‐poly(ether biphenyl ether ketone ketone) copolymers were studied by using small angle X‐ray scattering and the one‐dimensional electron density correlation function method. The results revealed that structures of the aggregated state of the copolymers depend closely on the biphenyl content (nb ...
Zhongwen Wu, Baoquan Yang, Hongfang Zhang, Hui Na, Zhishen Mo   +4 more
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Preparation of trifluoromethyl ketones and related fluorinated ketones

Tetrahedron, 1991
AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
Danièle Bonnet-Delpon, Jean-Pierre Bégué   +1 more
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Nanotribological Properties of Poly(ether ketone ketone) (PEKK) and Sulfonated Poly(ether ketone ketone) (S-PEKK) Thin Films

High Performance Polymers, 2002
An atomic force microscope (AFM) was used to determine the nanotribological properties of poly(ether ketone ketone) (PEKK) and sulfonated poly(ether ketone ketone) (S-PEKK) thin films, by sliding the AFM tip on the polymer surfaces and stepwise increasing the loading forces on the cantilever.
Caisheng Song, Daoji Gan, Yiwang Chen, Zhijian Wang   +3 more
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Synthesis and characterization of poly(ether ketone ether ketone ketone)/poly(ether ether ketone ketone) copolymers containing naphthalene and pendant cyano groups

Journal of Applied Polymer Science, 2009
Abstract2,6‐Bis(β‐naphthoxy)benzonitrile (BNOBN) was synthesized by reaction of β‐naphthol with 2,6‐difluorobenzonitrile in N‐methyl‐2‐pyrrolidone (NMP) in the presence of KOH and K2CO3. Poly(ether ketone ether ketone ketone)(PEKEKK) /poly(ether ether ketone ketone) (PEEKK) copolymers containing naphthalene and pendant cyano groups were obtained by ...
Mingzhong Cai, Yikai Yu, Meihua Zhu
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