Synthesis and Properties of Novel Polyethylene‐Based Antioxidants with Hindered Phenols as Side Groups

2019 ◽  
Vol 221 (3) ◽  
pp. 1900410 ◽  
Author(s):  
Yin Zhang ◽  
Huayi Li ◽  
Mengru Li ◽  
Weiwei Liu ◽  
Qian Li ◽  
...  
Keyword(s):  
Hindered Phenols

Research changes in the properties of butadiene-nitrile rubber under various aging conditions

2021 ◽  
pp. 009524432110290
Author(s):  
Mariya L Davydova ◽  
Aytalina F Fedorova
Keyword(s):  
Accelerated Aging ◽  
Physical And Mechanical Properties ◽  
Exposure Period ◽  
Climatic Conditions ◽  
Nitrile Rubber ◽  
Sterically Hindered Phenols ◽  
Loading Mode ◽  
Hindered Phenols ◽  
The Republic ◽  
Butadiene Nitrile Rubber

This article represents the results of a study of changes in the properties of vulcanizates based on BNR-18 butadiene-nitrile rubber containing as stabilizers the experimental spatially hindered phenols Stafen, CO3, CO4, and industrial antioxidant 6PPD, after accelerated aging (100°C 96 h) and aging under full-scale exposure in extreme climatic conditions of the Republic of Sakha (Yakutia) during 2 years. In winter, the air temperature reached—48°C, in summer—+36.1°C. It is shown that the experimental sterically hindered phenols more effectively under natural exposure conditions. They are characterized by the most stability in terms of strength throughout the entire exposure period. Under conditions of accelerated aging, the vulcanizate containing the industrial antioxidant 6PPD is characterized by the greatest stability of physical and mechanical properties. According to the viscoelastic characteristics obtained in the dynamic loading mode, the contribution of the presented stabilizers in maintaining resistance to temperature and deformation effects compared with unstabilized rubber is confirmed.

Studies on hindered phenols and analogs. 2. 1,3-Benzoxathioles having SRS-A inhibiting activity

1990 ◽  
Vol 33 (5) ◽  
pp. 1491-1496 ◽  
Author(s):  
Yuichi Aizawa ◽  
Tsutomu Kanai ◽  
Kazuo Hasegawa ◽  
Takeshi Yamaguchi ◽  
Yoshio Iizuka ◽  
...  
Keyword(s):  
Inhibiting Activity ◽  
Hindered Phenols

Hindered Phenols Related to Metameconine1

1961 ◽  
Vol 26 (8) ◽  
pp. 2906-2910 ◽  
Author(s):  
MARJORIE ALLEN ◽  
A. L. PROMISLOW ◽  
R. Y. MOIR
Keyword(s):  
Hindered Phenols

Solid-phase bromination of hindered phenols

1996 ◽  
Vol 45 (5) ◽  
pp. 1249-1251 ◽  
Author(s):  
Y. B. Vol'eva ◽  
I. S. Belostotskaya ◽  
N. L. Komissarova ◽  
V. V. Ershov
Keyword(s):  
Solid Phase ◽  
Hindered Phenols
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