scholarly journals Ring-Opening Polymerization of Suit Ones. VIII. Initial Reaction on Ring-Opening Polymerization of 3-Hydroxy-1-propane Sulfonic Acid Sultone with Tertiary Amines

1976 ◽  
Vol 8 (1) ◽  
pp. 15-20 ◽  
Author(s):  
Shizunobu Hashimoto ◽  
Takayuki Yamashita
Keyword(s):  
Ring Opening ◽  
Sulfonic Acid ◽  
Ring Opening Polymerization ◽  
Initial Reaction ◽  
Tertiary Amines

Tripodal hydrogen bond donor binding with sulfonic acid enables ring-opening polymerization

2016 ◽  
Vol 7 (7) ◽  
pp. 1368-1374 ◽  
Author(s):  
Xiaopei Li ◽  
Qiguo Zhang ◽  
Zhenjiang Li ◽  
Songquan Xu ◽  
Chengxu Zhao ◽  
...  
Keyword(s):  
Hydrogen Bond ◽  
Ring Opening ◽  
Sulfonic Acid ◽  
Ring Opening Polymerization ◽  
Cyclic Ester ◽  
Cyclic Carbonates ◽  
Hydrogen Bond Donor ◽  
Acidic Catalysis

The first Brønsted acidic catalysis platform workable in all of the three major types of cyclic ester monomers including lactides, cyclic carbonates, and lactones, is described in this paper.

Nucleation loci in the ring-opening polymerization of octamethyl- cyclo-tetrasiloxane in Winsor I system with dodecylbenzene sulfonic acid sodium salt and sulfuric acid

e-Polymers ◽  
2010 ◽  
Vol 10 (1) ◽  
Author(s):  
Kiyoshi Suzuki ◽  
Daisuke Andoh ◽  
Akira Hyodoh ◽  
Shuzaemon Satoh ◽  
Mamoru Nomura
Keyword(s):  
Sulfuric Acid ◽  
Aqueous Phase ◽  
Sodium Salt ◽  
Ring Opening ◽  
Sulfonic Acid ◽  
Average Diameter ◽  
Ring Opening Polymerization ◽  
Acid Sodium Salt ◽  
Dodecylbenzene Sulfonic Acid ◽  
Sulfonic Acid Sodium Salt

AbstractThe ring-opening polymerization of octamethylcyclotetrasiloxane (OTS) was carried out in an Winsor I system with dodecylbenzene sulfonic acid, sodium salt (DBSNa) as emulsifier and sulfuric acid as initiator, to clarify the mechanism of the polymerization, especially focusing on the nucleation loci, the rate of generation of nonvolatile molecules and the average diameter of generated polymer droplets. In the system where DBSNa concentration is higher than the critical micellar concentration (CMC), nonvolatile molecules were generated in the aqueous phase and their generation rate became higher with an increase in DBSNa concentration, while nonvolatile molecules were not generated at emulsifier concentrations lower than the CMC. These experimental results support that nucleation did not take place in the true aqueous phase, but originated from the micelles.

Internal Lewis pair enhanced H-bond donor: boronate-urea and tertiary amine co-catalysis in ring-opening polymerization

2016 ◽  
Vol 7 (44) ◽  
pp. 6843-6853 ◽  
Author(s):  
Songquan Xu ◽  
Herui Sun ◽  
Jingjing Liu ◽  
Jiaxi Xu ◽  
Xianfu Pan ◽  
...  
Keyword(s):  
Tertiary Amine ◽  
Ring Opening ◽  
Ring Opening Polymerization ◽  
Tertiary Amines

A new protocol of internal Lewis pair enhanced H-bond (LPHBD) catalysis for ring opening polymerisation was developed using boronate-urea (BU) as a representative LPHBD combined with tertiary amines.

Phenols and Tertiary Amines: An Amazingly Simple Hydrogen-Bonding Organocatalytic System Promoting Ring Opening Polymerization

2011 ◽  
Vol 353 (7) ◽  
pp. 1049-1054 ◽  
Author(s):  
Coralie Thomas ◽  
Frédéric Peruch ◽  
Alain Deffieux ◽  
Anne Milet ◽  
Jean-Pierre Desvergne ◽  
...  
Keyword(s):  
Hydrogen Bonding ◽  
Ring Opening ◽  
Ring Opening Polymerization ◽  
Tertiary Amines
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