Results 81 to 90 of about 12,701 (222)

EFSA Panel on Food Contact Materials, Enzymes, Flavourings and Processing Ai ds (CEF); Scientific Opinion on Flavouring Group Evaluation 208 (FGE.208): Consideration of genotoxicity data on representatives for 10 alicyclic aldehydes with the α , β - unsaturation in ring / side - chain and precursors from chemical subgroup 2.2 of FGE.19 b y EFSA [PDF]

open access: yes, 2013
The Panel on Food Contact Materials, Enzymes, Flavourings and Processing Aids of the European Food Safety Authority was requested to evaluate the genotoxic potential of one flavouring substance from subgroup 2.2 of FGE.19 in the Flavouring Group ...
Bowen   +18 more
core   +2 more sources

Quantum-chemical study of nucleophilic substitution of nitro group in N-alkyl-3-nitro-1,2,4-triazoles molecules in reactions with alicyclic alcohols and polyatomic phenols

open access: yesЖурнал Белорусского государственного университета: Химия, 2018
Nucleophilic substitution of nitro group in N-alkyl-3-nitro-1,2,4-triazoles molecules with alicyclic alcohols (cyclohexanol, menthol) and polyatomic phenols (pyrocatechol, resorcinol) in the gas phase and in aqueous solution was studied by means of ...
Vadim E. Matulis   +4 more
doaj  

Lower-curing-temperature PMR polyimides [PDF]

open access: yes
Partial substitution of a p-aminostyrene end-cap for the monomethyl ester of 5-norbornene-2, 3-dicarboxylic acid lowered the final cure temperature of typical PMR resins from 600 F to 500 F.
Delvigs, P.
core   +1 more source

Synthesis of Wholly Alicyclic Polyimides from N-Silylated Alicyclic Diamines and Alicyclic Dianhydrides

open access: yesSynthesis of Wholly Alicyclic Polyimides from N-Silylated Alicyclic Diamines and Alicyclic Dianhydrides
identifier:oai:t2r2.star.titech.ac.jp ...
  +3 more sources

Discogene Monothioscyllitol-Derivate

open access: yesCHIMIA, 1986
Two derivatives (3 and 4) of the hitherto unknown 1-deoxy- 1-mercapto-scyllo-inositol (monothioscyllitol), a sulfur analogue of the naturally occurring scyllo-inositol, have been prepared by nucleophilic substitution reaction from a hexaester of myo ...
Bernd Kohne   +2 more
doaj   +1 more source

New rapid-curing, stable polyimide polymers with high-temperature strength and thermal stability [PDF]

open access: yes, 1969
Additive-type polymerization reaction forms thermally stable polyimide polymers, thereby eliminating the volatile matter attendant with the condensation reaction.
Burns, E. A.   +5 more
core   +1 more source

Pyrolysis of asphaltenes and biomarkers for the fingerprinting of the _Amoco Cadiz_ oil spill after 23 years [PDF]

open access: yes, 2009
The chemical composition of the petroleum products accidently or deliberately released in the environment varies considerably with time under the action of biological (biodegradation) and physico-chemical (photo-oxidation) processes.
Fré, Jean Oudot
core   +1 more source

Fluorinated esters of polycarboxylic acids [PDF]

open access: yes, 1973
Fluorine containing esters of polycarboxylic acids are discussed.
Breed, L. L., Elliott, R. L.
core   +1 more source

Design and Theoretical Study of D–A–π–A Organic Sensitizers with [1,2,5]Thiadiazolo[3,4-c]pyridine, [1,2,5]Selenadiazolo[3,4-c]pyridine, and [1,2,5]Oxadiazolo[3,4-c]pyridine π Component

open access: yesJournal of Chemistry, 2015
The study concerns molecular design and theoretical study of novel prospective organic sensitizers based on D–A–π–A concept. A modification of the concept (DA–π–A) and new ways for design of organic sensitizers are proposed.
O. I. Bolshakov   +4 more
doaj   +1 more source

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