Synthesis of bismaleate pentaerythritol ester and its application as PVC auxiliary heat stabilizer

2021 ◽  
pp. 51820
Author(s):  
Xinxin Gao ◽  
Pingping Jiang ◽  
Zheming Zhang ◽  
Zhenhua Li ◽  
Yuchao Li ◽  
...  
Keyword(s):  
Heat Stabilizer ◽  
Pentaerythritol Ester

Density Measurements under Pressure for Mixtures of Pentaerythritol Ester Lubricants. Analysis of a Density−Viscosity Relationship†

2007 ◽  
Vol 52 (4) ◽  
pp. 1429-1436 ◽  
Author(s):  
Olivia Fandiño ◽  
María J. P. Comuñas ◽  
Luis Lugo ◽  
Enriqueta R. López ◽  
Josefa Fernández
Keyword(s):  
Density Measurements ◽  
Pentaerythritol Ester

Effect of S-1 heat-stabilizer on the physicomechanical properties of complex polyester yarns

1993 ◽  
Vol 24 (2) ◽  
pp. 137-139
Author(s):  
D. V. Lopatik ◽  
O. M. Bondareva ◽  
I. F. Osipenko ◽  
T. N. Sidorenko ◽  
A. P. Gorbatenko ◽  
...  
Keyword(s):  
Physicomechanical Properties ◽  
Heat Stabilizer

scholarly journals Characteristics and Kinetics of Rosin Pentaerythritol Ester via Oxidation Process under Ultraviolet Irradiation

Molecules ◽  
2018 ◽  
Vol 23 (11) ◽  
pp. 2816 ◽  
Author(s):  
Yuanlin Li ◽  
Xiongmin Liu ◽  
Qiang Zhang ◽  
Bo Wang ◽  
Chang Yu ◽  
...  
Keyword(s):  
Light Intensity ◽  
Oxidation Kinetics ◽  
Pseudo First Order Reaction ◽  
Initial Oxidation ◽  
Photo Oxidation ◽  
Average Value ◽  
Pentaerythritol Ester ◽  
Fundamental Information ◽  
The Stability ◽  
Kinetics Of

A self-designed reaction device was used as a promising equipment to investigate the oxidation characteristics and kinetics of rosin pentaerythritol ester (RPE) under UV irradiation. Photo-oxidation kinetics and the initial quantum yield (Φ) of RPE were calculated. The initial oxidation product of the photo-oxidation reaction—peroxide was analyzed by iodimetry. The peroxide concentration is related to the light intensity (I) and the temperature (T), and the increasing T and I would destabilize the RPE by accelerating peroxide forming. Photo-oxidation of RPE follows the pseudo first-order reaction kinetics. The relationship between activation energy and logarithm of light intensity (ln I) is linear, and it is expressed as Ea = −4.937ln I + 45.565. Φ was calculated by the photo-oxidation kinetics, and the average value of Φ was 7.19% in the light intensity range of 200–800 μW cm−2. This research can provide fundamental information for application of RPE, and help obtain a better understanding of the stability of rosin esters.

Dynamic Viscosity under Pressure for Mixtures of Pentaerythritol Ester Lubricants with 32 Viscosity Grade:  Measurements and Modeling

2007 ◽  
Vol 46 (6) ◽  
pp. 1826-1835 ◽  
Author(s):  
L. Lugo ◽  
X. Canet ◽  
M. J. P. Comuñas ◽  
A. S. Pensado ◽  
J. Fernández
Keyword(s):  
Dynamic Viscosity ◽  
Pentaerythritol Ester ◽  
Viscosity Grade

Synthesis and characterization of Zn-doped MgAl-layered double hydroxide nanoparticles as PVC heat stabilizer

2013 ◽  
Vol 15 (9) ◽  
Author(s):  
Gongling Wang ◽  
Mei Yang ◽  
Zhiwen Li ◽  
Kaifeng Lin ◽  
Quan Jin ◽  
...  
Keyword(s):  
Layered Double Hydroxide ◽  
Synthesis And Characterization ◽  
Heat Stabilizer ◽  
Double Hydroxide ◽  
Layered Double Hydroxide Nanoparticles

Effect of Rosin Ester on Water-Resistant Adhesion Oximized RTV-1 Silicone Rubber Sealant

2010 ◽  
Vol 150-151 ◽  
pp. 626-629
Author(s):  
Sui Lian Luo ◽  
Yang Shan Hu ◽  
Guang Shi ◽  
Hui Ming Pan
Keyword(s):  
Silicone Rubber ◽  
Adhesive Bond ◽  
Hot Water ◽  
Adhesive Failure ◽  
Good Adhesion ◽  
Pentaerythritol Ester ◽  
High Adhesion ◽  
Rosin Ester

It is necessary to improve the adhesion of the cured rubber to a substrate as it is used extensively. It is well known that an improvement in adhesion can be realized by incorporating in the composition a sliane or siloxane. Although the composition provides good adhesion to many kinds of substrates, it has been found that the adhesive bond degrades rapidly under wet conditions. To be solved it, rosin eater was incorprated in the silcone ruber in the paper. Increasing the content of rosin ester could induce a relative high adhesion in hot water. Moreover, when the content of modified rosin pentaerythritol ester was above 4.5 phr, the immersion days in hot water before adhesive failure occured were three times than that of non-additive rosin esters.

Ferro extends heat stabilizer range for wire and cable applications

2002 ◽  
Vol 2002 (4) ◽  
pp. 2-3
Keyword(s):  
Heat Stabilizer

scholarly journals Ground Heat Stabilizer Work Research in Year-round Operation Mode

2015 ◽  
Vol 113 ◽  
pp. 282-286
Author(s):  
V.A. Maksimenko ◽  
V.S. Evdokimov
Keyword(s):  
Operation Mode ◽  
Heat Stabilizer

Organic Based Heat Stabilizers for PVC: A Safer and more Environmentally Friendly Alternatives

2015 ◽  
Vol 659 ◽  
pp. 321-326 ◽  
Author(s):  
Aran Asawakosinchai ◽  
Chanchra Jubsilp ◽  
Sarawut Rimdusit
Keyword(s):  
Room Temperature ◽  
New Technology ◽  
Environmentally Friendly ◽  
Mechanical Analysis ◽  
Pipe Production ◽  
Short Term ◽  
Zinc Compounds ◽  
Heat Stabilizer ◽  
Pvc Pipe ◽  
Potential Use

Organic based stabilizers have been considered as a new technology providing environmentally friendly heat stabilizer for PVC pipe production to substitute conventional lead stabilizer as well as calcium zinc stabilizer. In this research, PVC samples stabilized with 5 types of heat stabilizers i.e. 1) commercial lead stabilizer, 2) commercial calcium zinc stabilizer, 3) commercial organic based stabilizer (OBS), 4) 1,3-dimetyl-6-aminouracil (DAU) and 5) eugenol, were investigated. From dynamic mechanical analysis, storage modulus at room temperature of PVC stabilized with DAU was found to provide the highest value among those stabilizers. Glass transition temperature of the PVC stabilized with all types of heat stabilizers was determined to be approximately 99°C except the value of about 89°C in eugenol stabilized PVC. Furthermore, PVC stabilized with commercial lead, calcium zinc stabilizer and commercial OBS could be reprocessed up to at least 5 cycles. Whereas, PVC stabilized with DAU was found to be able to withstand the processing cycle up to 4 cycles. Additionally, PVC stabilized with DAU showed the most outstanding short term thermal stability and can maintain its original color for at least up to 4 processing cycles. Finally, repeated processing of PVC stabilized with each type of heat stabilizers showed negligible effect on mechanical properties for at least up to 3 processing cycles. From the above results, it is evident that DAU showed high potential use as a safe and effective organic based heat stabilizer for PVC to substitute traditional lead or calcium zinc compounds.

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