111 research outputs found
ΠΠ·ΡΡΠ΅Π½ΠΈΠ΅ ΠΎΡΠ²Π΅ΡΠΆΠ΄Π΅Π½ΠΈΡ ΠΏΠΎΠ»ΠΈΡΡΠ΅ΡΠ°Π½ΠΎΠ²ΡΡ ΠΏΠΎΠΊΡΡΡΠΈΠΉ ΠΌΠ΅ΡΠΎΠ΄ΠΎΠΌ ΠΈΠΊ-ΡΠΏΠ΅ΠΊΡΡΠΎΡΠΊΠΎΠΏΠΈΠΈ
The results of the study of the curing process of polyurethane compositions with participation of two different catalysts by the method of IR spectroscopy are given. The time dependences of curing of polyurethane coatings from concentrations of catalysts were determined, on the basis of which the most effective catalyst was selected.ΠΡΠΈΠ²Π΅Π΄Π΅Π½Ρ ΡΠ΅Π·ΡΠ»ΡΡΠ°ΡΡ ΠΈΡΡΠ»Π΅Π΄ΠΎΠ²Π°Π½ΠΈΡ ΠΏΡΠΎΡΠ΅ΡΡΠ° ΠΎΡΠ²Π΅ΡΠΆΠ΄Π΅Π½ΠΈΡ ΠΏΠΎΠ»ΠΈΡΡΠ΅ΡΠ°Π½ΠΎΠ²ΡΡ
ΠΊΠΎΠΌΠΏΠΎΠ·ΠΈΡΠΈΠΉ Ρ ΡΡΠ°ΡΡΠΈΠ΅ΠΌ Π΄Π²ΡΡ
ΡΠ°Π·Π»ΠΈΡΠ½ΡΡ
ΠΊΠ°ΡΠ°Π»ΠΈΠ·Π°ΡΠΎΡΠΎΠ² ΠΌΠ΅ΡΠΎΠ΄ΠΎΠΌ ΠΠ-ΡΠΏΠ΅ΠΊΡΡΠΎΡΠΊΠΎΠΏΠΈΠΈ. ΠΠΏΡΠ΅Π΄Π΅Π»Π΅Π½Ρ Π²ΡΠ΅ΠΌΠ΅Π½Π½ΡΠ΅ Π·Π°Π²ΠΈΡΠΈΠΌΠΎΡΡΠΈ ΠΎΡΠ²Π΅ΡΠΆΠ΄Π΅Π½ΠΈΡ ΠΏΠΎΠ»ΠΈΡΡΠ΅ΡΠ°Π½ΠΎΠ²ΠΎΠ³ΠΎ ΠΏΠΎΠΊΡΡΡΠΈΡ ΠΎΡ ΠΊΠΎΠ½ΡΠ΅Π½ΡΡΠ°ΡΠΈΠΉ ΠΊΠ°ΡΠ°Π»ΠΈΠ·Π°ΡΠΎΡΠΎΠ², ΠΏΠΎ ΠΊΠΎΡΠΎΡΡΠΌ Π²ΡΠ±ΡΠ°Π½ Π½Π°ΠΈΠ±ΠΎΠ»Π΅Π΅ ΡΡΡΠ΅ΠΊΡΠΈΠ²Π½ΡΠΉ ΠΊΠ°ΡΠ°Π»ΠΈΠ·Π°ΡΠΎΡ
ΠΠ΄Π΅Π½ΡΠΈΡΠΈΠΊΠ°ΡΠΈΡ ΠΌΠΎΠ½ΠΎΠΌΠ΅ΡΠ½ΠΎΠ³ΠΎ ΡΠΎΡΡΠ°Π²Π° ΠΏΠΎΠ»ΠΈ(ΡΡΠΈΡΠΎΠ»)Π°ΠΊΡΠΈΠ»Π°ΡΠΎΠ²
The work is devoted to qualitative analysis of poly(styrene)acrylates, the definition of the content of styrene in them. The methods of IR, NMR spectroscopy and gas chromatography-mass spectrometry were used for analysis. It was shown that the integrated use of modern spectral methods allows unambiguous to lead identification of the components in the copolymer and to use of spectral data for quantitative determinations.Π Π°Π±ΠΎΡΠ° ΠΏΠΎΡΠ²ΡΡΠ΅Π½Π° ΠΊΠ°ΡΠ΅ΡΡΠ²Π΅Π½Π½ΠΎΠΌΡ Π°Π½Π°Π»ΠΈΠ·Ρ ΠΏΠΎΠ»ΠΈΡΡΠΈΡΠΎΠ»Π°ΠΊΡΠΈΠ»Π°ΡΠΎΠ², ΠΎΠΏΡΠ΅Π΄Π΅Π»Π΅Π½ΠΈΡ ΡΠΎΠ΄Π΅ΡΠΆΠ°Π½ΠΈΡ Π² Π½ΠΈΡ
ΡΡΠΈΡΠΎΠ»Π°. ΠΠ»Ρ ΠΏΡΠΎΠ²Π΅Π΄Π΅Π½ΠΈΡ Π°Π½Π°Π»ΠΈΠ·Π° Π±ΡΠ»ΠΈ ΠΈΡΠΏΠΎΠ»ΡΠ·ΠΎΠ²Π°Π½Ρ ΠΌΠ΅ΡΠΎΠ΄Ρ ΠΠ-, Π―ΠΠ ΡΠΏΠ΅ΠΊΡΡΠΎΡΠΊΠΎΠΏΠΈΠΈ ΠΈ Π³Π°Π·ΠΎΠ²ΠΎΠΉ Ρ
ΡΠΎΠΌΠ°ΡΠΎ-ΠΌΠ°ΡΡ-ΡΠΏΠ΅ΠΊΡΡΠΎΠΌΠ΅ΡΡΠΈΠΈ. ΠΡΠ»ΠΎ ΠΏΠΎΠΊΠ°Π·Π°Π½ΠΎ, ΡΡΠΎ ΠΊΠΎΠΌΠΏΠ»Π΅ΠΊΡΠ½ΠΎΠ΅ ΠΈΡΠΏΠΎΠ»ΡΠ·ΠΎΠ²Π°Π½ΠΈΠ΅ ΡΠΎΠ²ΡΠ΅ΠΌΠ΅Π½Π½ΡΡ
ΡΠΏΠ΅ΠΊΡΡΠ°Π»ΡΠ½ΡΡ
ΠΌΠ΅ΡΠΎΠ΄ΠΎΠ² ΠΏΠΎΠ·Π²ΠΎΠ»ΡΠ΅Ρ ΠΎΠ΄Π½ΠΎΠ·Π½Π°ΡΠ½ΠΎ ΠΏΡΠΎΠ²Π΅ΡΡΠΈ ΠΈΠ΄Π΅Π½ΡΠΈΡΠΈΠΊΠ°ΡΠΈΡ ΠΊΠΎΠΌΠΏΠΎΠ½Π΅Π½ΡΠΎΠ² Π² ΡΠΎΠΏΠΎΠ»ΠΈΠΌΠ΅ΡΠ΅, Π° ΡΠ°ΠΊΠΆΠ΅ ΠΈΡΠΏΠΎΠ»ΡΠ·ΠΎΠ²Π°ΡΡ ΡΠΏΠ΅ΠΊΡΡΠ°Π»ΡΠ½ΡΠ΅ Π΄Π°Π½Π½ΡΠ΅ Π΄Π»Ρ ΠΊΠΎΠ»ΠΈΡΠ΅ΡΡΠ²Π΅Π½Π½ΡΡ
ΠΎΠΏΡΠ΅Π΄Π΅Π»Π΅Π½ΠΈΠΉ
Synthesis and kinetics of the cyclization of 3-(dialkylaminophenyl)-2- (phenylcarbonyl)-prop-2-enenitriles
The reaction of ortho-(N,N-dialkylamino)benzaldehydes with benzoylacetonitrile gave fused 1,2,3,4-tetra-hydroquinolino-5-carbonitriles due to cyclization of the intermediate 2-(phenylcarbonyl)-3-[2-[(dialkyl-amino) phenyl]prop-2-enenitriles through a tert-amino effect mechanism. Kinetic studies were carried out on the cyclization of 2-(phenylcarbonyl)-3-[2-(piperidin-1-yl) phenyl]prop-2-enenitrile. Β© 2013 Springer Science+Business Media New York
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