Reference

Nonstaining antiozonant enamines

Nonstaining antiozonant enamines. Danielson, Arthur C. (Uniroyal, Inc., USA). U. 67278-89-1 are also occured in this study.S. US 4082706 4 Apr 1978, 5 pp. (English). (United States of America). CODEN: USXXAM. CLASS: IC: C08L007-00. NCL: 260005000. APPLICATION: US 75-586829 13 Jun 1975. DOCUMENT TYPE: Patent CA Section: 38 (Elastomers, Including Natural Rubber) Section cross-reference(s): 23, 24, 27 Enamines (RR1NCR4:CR2R3, R, R1 = primary or secondary, satd. or unsatd., C1-8 alkyl groups R2, R3 = H or C1-6 alkyl groups; R4 = H or C1-4 primary or secondary alkyl groups; RR1 or R2R3 may optionally be alkylene) prepd. from aldehydes or ketones may be incorporated into a whitewall tire stock to enhance the ozone resistance of the stock while reducing discoloration or staining of the stock. Thus, 1-(2,6-dimethylmorpholino)-2-ethyl-1-hexene (I) [67278-89-1] was prepd. by refluxing 2,6-dimethylmorpholine [141-91-3] and 2-ethylhexanal [123-05-7] in toluene and a Dean Stark trap and was compounded into a whitewall stock recipe. A sample contg. I had static O3 resistance at 50% stretch of 216 h, passed a dynamic O3 resistance test, and was nonstaining in the compn.; a similar compn. contg. tetrahydrobenzaldehyde ethylene acetal failed in 24 h in the static O3 resistance test and stained the compn.Except for chemicals metioned above, 67278-89-1 is also used. ..

Methyl radical expulsions occurring with kinetic energy release

Methyl radical expulsions occurring with kinetic energy release. Kalman, John R.; Fairweather, Robert B.; Hvistendahl, Georg; Williams, Dudley H. (Univ. Chem. Lab., Univ. Cambridge, Cambridge, Engl.). J. Chem. Soc., Chem. Commun., (15), 604-5 (English) 1976. CODEN: JCCCAT. DOCUMENT TYPE: Journal CA Section: 22 (Physical Organic Chemistry) Cation radicals derived by ionization of 2,5-dimethylpiperazine (I) and morpholines II (R = H, Me) in a mass spectrometer expelled Me.bul.There are some commonly used reagents with their cas registry numbers 141-91-3 and 61207-32-7 in this article. with a kinetic energy release of 36-41 kJ/mole. The dissocn. of II (R = Me) cation radical proceeds through ring contraction to cation radical III which expels Me.bul.. .