Results 31 to 40 of about 12,723 (223)

Novel Cobalt Dichloride Complexes with Hindered Diphenylphosphine Ligands: Synthesis, Characterization, and Behavior in the Polymerization of Butadiene

open access: yesMolecules, 2019
Two novel cobalt diphenylphosphine complexes were synthesized by reacting cobalt(II) chloride with tert-butyl(diphenyl)phosphine (PtBuPh2) and (S)-(+)neomenthyldiphenylphosphine [(S)-NMDPP].
Giovanni Ricci   +4 more
doaj   +1 more source

"Preparation of high vinyl polybutadiene/sepiolite nanocomposite

open access: yesHecheng xiangjiao gongye, 2022
High vinyl polybutadiene / sepiolite nanocomposites were prepared by in-situ polymerization using sepiolite as catalyst carrier for the coordination polymerization of butadiene catalyzed by molybdenum-based catalyst.
WANG Xiao-tong, XIE Ting-hao, TANG Jian, HUA Jing
doaj   +1 more source

Effect of liquid polybutadiene rubber on processability and fatigue resistance of cis-1,4-butadiene rubber /natural rubber blends

open access: yesHecheng xiangjiao gongye, 2022
Effects of liquid polybutadiene rubber activity-50 on the processability and fatigue resistance of cis-1,4-polybutadiene rubber (BR)/natural rubber (NR) blends were investigated.
HAN Liu; LIU Zi-yan; WANG Rui-jia; FENG Qiang
doaj   +1 more source

Infrared Spectra of Polybutadienes [PDF]

open access: yesRubber Chemistry and Technology, 1965
AbstractIt is shown, by analytical resolutions of the spectra of isomerized cis‐1,4‐polybutadienes, that the band due to hydrogen out‐of‐plane vibrations of cis‐CHCH groups appears at 740 cm.−1 and that the apparent shift of this band to lower frequencies, as the amount of cis‐CHCH decrease in a polybutadiene, is due to the presence of other bands in
openaire   +1 more source

"Effect of cis-1,4-unit on properties of rare earth-based polybutadiene rubber with narrow distribution"

open access: yesHecheng xiangjiao gongye, 2023
"The structures of three self-made rare earth-based cis-1,4-polybutadiene rubber with narrow distribution were analyzed, and the relationships between cis-1,4-unit content and properties were studied.
SONG Yu-ping1,2, HE Wen-heng1,2, XUE Wen-hui1, LIANG Sheng-kai3, TANG Tian-ming3
doaj   +1 more source

Studies on thermo-oxidative degradation of synthetic rubbers 1-4 and 1-2 polybutadienes

open access: yesVietnam Journal of Science, Technology and Engineering, 2017
The production of natural latex is limited, and the related demand for terrestrial transportation has increased. The synthesis of rubber has become necessary and the resulting synthetics’ properties must be known.
Quoc Hung Nguyen   +3 more
doaj   +1 more source

Amine-Functionalized Polybutadiene Synthesis by Tunable Postpolymerization Hydroaminoalkylation

open access: yes, 2023
Early transition metal-catalyzed hydroamino­alkylation is a powerful single-step method to selectively add amines to polybutadienes, offering an efficient strategy to access amine-functionalized polyolefins. Aryl and alkyl secondary amines were used with
Sabrina S. Scott (11520367)   +5 more
core   +1 more source

Basic characteristics of polycarbonate-based dual cantilever sensors for detecting VOC

open access: yesMechanical Engineering Journal, 2014
We have developed and evaluated polycarbonate (PC)-based dual cantilever sensors as part of a low-cost sensor network system for monitoring VOCs (volatile organic compounds).
Naoki SHIRAISHI   +2 more
doaj   +1 more source

The Structure of Cyclized Polybutadiene

open access: yes, 1958
Polybutadiene was cyclized with sulfuric acid under rather drastic conditions. The cyclization was confirmed by the decrease of unsaturation and the change of physical properties. The low degree of unsaturation of cyclized polybutadiene, as determined by
J. Reid Shelton, Lieng-huang Lee
core   +1 more source

"Preparation of Mooney viscosity reference material for low cis-1,4-polybutadiene rubber"

open access: yesHecheng xiangjiao gongye, 2023
The low cis-1,4-polybutadiene rubber material that had been filtrated and passed the homogeneity and stability tests and conformed to requirements for the reference material, was jointly determined the value by several laboratories, and the results of ...
LIU Jun-bao1, HUANG Shi-ying1, MA Li-Li2, CAO Shuai-ying1
doaj   +1 more source

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