Simultaneous control over the molecular weight and tacticity of poly(vinyl acetate) using a low-temperature photoinitiated RAFT process in fluoroalcohols

2013 ◽  
Vol 4 (21) ◽  
pp. 5449 ◽  
Author(s):  
So-Hee Shim ◽  
Min-kyoung Ham ◽  
June Huh ◽  
Young-Ku Kwon ◽  
Young-Je Kwark
Keyword(s):  
Molecular Weight ◽  
Low Temperature ◽  
Vinyl Acetate ◽  
Simultaneous Control

Influence of low-molecular-weight copolymers of ethylene with vinyl acetate on the low-temperature properties of diesel fuel

1974 ◽  
Vol 10 (8) ◽  
pp. 615-618 ◽  
Author(s):  
G. G. Krasnyanskaya ◽  
B. V. Gryaznov ◽  
V. A. Kryunina ◽  
S. L. Lyubimova ◽  
V. N. Monastyrskii ◽  
...  
Keyword(s):  
Molecular Weight ◽  
Low Temperature ◽  
Vinyl Acetate ◽  
Diesel Fuel ◽  
Low Molecular Weight

Preparation of n-Alkylacrylate and Vinyl Acetate Copolymer and Its Influence on Low-Temperature Fluidity of Diesel Fuel

2011 ◽  
Vol 236-238 ◽  
pp. 708-714 ◽  
Author(s):  
Hong An ◽  
Shu Gang Gao ◽  
Shuang Li ◽  
Yan Xin Xie
Keyword(s):  
Molecular Weight ◽  
Low Temperature ◽  
Vinyl Acetate ◽  
Diesel Fuel ◽  
Mass Fraction ◽  
Raw Materials ◽  
Cold Filter Plugging Point ◽  
Point Depressant ◽  
Petrochemical Company ◽  
Acetate Copolymer

The n-tetradecylacrylate-vinyl acetate copolymer (PPV) was prepared from n-tetradecylacrylate and vinyl acetate. The PPV was employed as pour point depressant to improve the low-temperature fluidity of the -20# diesel from Daqing Petrochemical Company. The result indicated that the solidification (SP) and the cold filter plugging point (CFPP) were affected largely by PPV. And when mass fraction of PPV -14(copolymerization conditions: 80 °C,w（benzoyl peroxide）1％（total weight of raw materials）, n（vinyl acetate）∶n（n- tetradecanolacrylate） = 4∶1 ) in diesel fuel was 0.1%wt, the SP reduced by 15.0 °C, the CFPP reduced by 6.0 °C simultaneously; We analysise the different molecular weight of PPV-14, and discover that the molecular weight of PPV-14 is ralated to the the low-temperature fluidity of the -20# diesel from Daqing Petrochemical Company. When mass fraction of PPV -14(molecular weight is 15000, distribution coefficient is 3.11) in diesel fuel was 0.1% wt, the SP reduced by 18.0 °C, the CFPP reduced by 7.0 °C, simultaneously.

Preparation of high molecular weight poly(vinyl alcohol) with high yield using low-temperature solution polymerization of vinyl acetate

2001 ◽  
Vol 80 (7) ◽  
pp. 1003-1012 ◽  
Author(s):  
Won Seok Lyoo ◽  
Sung Soo Han ◽  
Jin Hyun Choi ◽  
Han Do Ghim ◽  
Sang Woo Yoo ◽  
...  
Keyword(s):  
Molecular Weight ◽  
Low Temperature ◽  
High Molecular Weight ◽  
Vinyl Acetate ◽  
Vinyl Alcohol ◽  
High Yield ◽  
Poly Vinyl Alcohol ◽  
Solution Polymerization ◽  
Temperature Solution ◽  
High Molecular Weight Poly

Iodine Transfer Radical Polymerization of Vinyl Acetate in Fluoroalcohols for Simultaneous Control of Molecular Weight, Stereospecificity, and Regiospecificity

2006 ◽  
Vol 39 (12) ◽  
pp. 4054-4061 ◽  
Author(s):  
Kazuhiko Koumura ◽  
Kotaro Satoh ◽  
Masami Kamigaito ◽  
Yoshio Okamoto
Keyword(s):  
Molecular Weight ◽  
Radical Polymerization ◽  
Vinyl Acetate ◽  
Simultaneous Control ◽  
Iodine Transfer

Synthesis of high-molecular weight poly(vinyl alcohol) by low-temperature emulsifier-free emulsion polymerization of vinyl acetate and saponification

2012 ◽  
Vol 125 (4) ◽  
pp. 2771-2778 ◽  
Author(s):  
Bin Wang ◽  
Xiaoming Bao ◽  
Mengjin Jiang ◽  
Guangdou Ye ◽  
Jianjun Xu
Keyword(s):  
Molecular Weight ◽  
Low Temperature ◽  
Emulsion Polymerization ◽  
High Molecular Weight ◽  
Vinyl Acetate ◽  
Vinyl Alcohol ◽  
Poly Vinyl Alcohol ◽  
High Molecular Weight Poly

Application of ultra-high molecular weight polyethylene in a hydraulic drive

2020 ◽  
pp. 77-78
Keyword(s):  
Molecular Weight ◽  
Low Temperature ◽  
High Molecular Weight ◽  
Hydraulic Drive ◽  
Control Valve ◽  
Hydraulic Control ◽  
Hydraulic Motor ◽  
Hydraulic Pump ◽  
Hydraulic Oil ◽  
Ultra High Molecular Weight

The use of ultra-high molecular weight polyethylene (UHMW PE) for the manufacture of various parts, in particular cuffs for hydraulic drives, is proposed. The properties and advantages of UHMW PE in comparison with other polyethylene materials are considered. Keywords ultra-high molecular weight polyethylene, hydraulic pump, hydraulic motor, hydraulic control valve, hydraulic oil, low temperature. [email protected]

Effect of syndiotacticity on the morphology of water-soluble low molecular weight poly(vinyl alcohol) by solution copolymerization of vinyl pivalate/vinyl acetate in tetrahydrofuran and saponification

Polymer ◽  
2004 ◽  
Vol 45 (12) ◽  
pp. 4037-4043 ◽  
Author(s):  
Jeong Hyun Yeum ◽  
Byung Chul Ji ◽  
Seok Kyun Noh ◽  
Han Yong Jeon ◽  
Jin Woo Kwak ◽  
...  
Keyword(s):  
Molecular Weight ◽  
Vinyl Acetate ◽  
Vinyl Alcohol ◽  
Water Soluble ◽  
Poly Vinyl Alcohol ◽  
Low Molecular Weight
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