Hyperbranched Polyols via Copolymerization of 1,2-Butylene Oxide and Glycidol: Comparison of Batch Synthesis and Slow Monomer Addition

2015 ◽  
Vol 49 (1) ◽  
pp. 38-47 ◽  
Author(s):  
Jan Seiwert ◽  
Daniel Leibig ◽  
Ulrike Kemmer-Jonas ◽  
Marius Bauer ◽  
Igor Perevyazko ◽  
...  
Keyword(s):  
Hyperbranched Polyols

One-pot synthesis of hyperbranched polyols and their effects as crosslinkers on HTPB-based polyurethane

2014 ◽  
Vol 71 (10) ◽  
pp. 2671-2693 ◽  
Author(s):  
Hu Mingjie ◽  
Fu Wei ◽  
Gao Le ◽  
Wu Weibing ◽  
Liu Xinghai ◽  
...  
Keyword(s):  
One Pot ◽  
One Pot Synthesis ◽  
Hyperbranched Polyols

Hyperbranched grafting enabling simultaneous enhancement of the boric acid uptake and the adsorption rate of a complexing membrane

2016 ◽  
Vol 4 (30) ◽  
pp. 11656-11665 ◽  
Author(s):  
Jianqiang Meng ◽  
Jingjing Cao ◽  
Ruisong Xu ◽  
Zhe Wang ◽  
Rongbo Sun
Keyword(s):  
Boric Acid ◽  
High Capacity ◽  
Adsorption Rate ◽  
Acid Uptake ◽  
Boron Removal ◽  
High Adsorption ◽  
Step Process ◽  
Hyperbranched Polyols

Hyperbranched polyols were grafted onto a PAN membrane via a two-step process for boron removal. The grafted hyperbranched scaffold was utilized to optimize the ligand distribution so that a complexing membrane with both high capacity and high adsorption rate was obtained.

Functional polyurethane–urea coatings from sulfur rich hyperbranched polymers and an evaluation of their anticorrosion and optical properties

2016 ◽  
Vol 40 (9) ◽  
pp. 8081-8092 ◽  
Author(s):  
Nagaraj Goud Ireni ◽  
Ramanuj Narayan ◽  
Pratyay Basak ◽  
Kothapalli Venkata Suryanarayana Raju
Keyword(s):  
Optical Properties ◽  
Hyperbranched Polymers ◽  
Solvent Free ◽  
One Pot ◽  
Corrosion Resistant ◽  
Multistep Synthesis ◽  
Hyperbranched Polyols

Solvent free, one pot, multistep synthesis of sulfur rich hyperbranched polyols (SHBPs). SHBPs yielded excellent corrosion resistant, transparent polyurethane–urea coatings.

Tethering of hyperbranched polyols using PEI as a building block to synthesize antifouling PVDF membranes

2017 ◽  
Vol 419 ◽  
pp. 546-556 ◽  
Author(s):  
Xushan Wang ◽  
Zihong Wang ◽  
Zhe Wang ◽  
Yu Cao ◽  
Jianqiang Meng
Keyword(s):  
Building Block ◽  
Hyperbranched Polyols

Phosphorus-containing hyperbranched structures. Phosphorylation of hyperbranched polyols with 2-(diethylamino)-1,2,3-dioxaphosphinane

2008 ◽  
Vol 78 (7) ◽  
pp. 1338-1340 ◽  
Author(s):  
I. S. Nizamov ◽  
R. R. Shamilov ◽  
E. M. Mart’yanov ◽  
G. G. Sergeenko ◽  
G. A. Kutyrev ◽  
...  
Keyword(s):  
Phosphorus Containing ◽  
Hyperbranched Polyols

Effect of Hyperbranched Vegetable Oil Polyols on Properties of Flexible Polyurethane Foams

2007 ◽  
Vol 555 ◽  
pp. 459-465 ◽  
Author(s):  
Z.S. Petrović ◽  
I. Javni ◽  
X. Jing ◽  
D.P. Hong ◽  
A. Guo
Keyword(s):  
Molecular Weight ◽  
Crosslinking Density ◽  
Polyurethane Foams ◽  
Hydroxyl Groups ◽  
Secondary Hydroxyl ◽  
Car Seats ◽  
Molecular Weights ◽  
Foam Properties ◽  
Hyperbranched Polyols ◽  
Very High

Molded polyurethane foams for car seats are based on petrochemical polyols of molecular weight 4000-6000 and copolymer polyols containing micron size polymeric particles. Copolymer polyols (CPP) typically constitute 30% of the mixture with the base polyol. They help cell opening, increase load bearing and tear strength of the foams, but they are relatively expensive. Hyperbranched polyols of petrochemical origin were used in molded foams.[1] They are solid in the pure form and due to high crosslinking density could be incorporated at low concentration in conjunction with copolymer polyols. Instead, we have made hyperbranched polyols which could be a total replacement for CPP in molded foams. Six hyperbranched polyols with primary and secondary hydroxyl groups and different hydroxyl numbers were prepared from soybean oil and tested in flexible foams. Novel polyols were liquid even at very high molecular weights and could completely replace copolymer polyols. Functionality of these polyols increased linearly with molecular weight to very high values, resulting eventually in their high crosslinking power. The effects of the type of hydroxyl groups (primary vs. secondary), hydroxyl number (from 85 to 135 mg KOH/g), and concentration (7.5-30%) in the mixture with the base polyol on foam properties were analyzed. It was found that hyperbranched polyols could replace copolymer polyols completely but their effect on cell morphology and mechanical properties varied with the type of polyol and concentration.

Solid-state structure and properties of hyperbranched polyols

2000 ◽  
Vol 77 (6) ◽  
pp. 1207-1217 ◽  
Author(s):  
M. Rogunova ◽  
T.-Y. S. Lynch ◽  
W. Pretzer ◽  
M. Kulzick ◽  
A. Hiltner ◽  
...  
Keyword(s):  
Solid State ◽  
Structure And Properties ◽  
State Structure ◽  
Solid State Structure ◽  
Hyperbranched Polyols
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