Results 41 to 50 of about 21,919,772 (121)

Chemoenzymatic Synthesis and Chemical Recycling of Poly(ester-urethane)s

open access: yes, 2011
Novel poly(ester-urethane)s were prepared by a synthetic route using a lipase that avoids the use of hazardous diisocyanate. The urethane linkage was formed by the reaction of phenyl carbonate with amino acids and amino alcohols that produced urethane ...
Hiroto Hayashi   +2 more
core   +1 more source

Poly(hydrazide-ester)s and poly(1,3,4-oxadiazole-ester)s containing pendent phenoxy groups

open access: yes, 1997
A series of new arornatic poly(hydrazide-ester)s has been synthesized by solution polycondensation of two diacid dichlorides containing preformed ester groups with phenoxyterephthaloyl dihydrazide or with a mixture of phenoxyterephthaloyl dihydrazide ...
Hamciuc, Elena   +4 more
core  

Ester e il fragile potere delle donne

open access: yes, 2008
Ho analizzato la figura biblica di ester alla luce della ricezione che ne ha avuto nella predicazione pre ...
VALERIO, ADRIANA
core  

EFFECTS OF THE IMIDIZATION TEMPERATURE OF POLY(IMIDE-SILOXANE) ON THE ADHESION STRENGTH OF EPOXY-RESIN POLY(IMIDE-SILOXANE) JOINTS

open access: yes, 1994
The effects of the imidization temperature of poly(imide-siloxane) on the adhesion strength of epoxy resin/poly(imide-siloxane) joints were studied. The effects of the content and molecular weight of polydimethylsiloxane in poly(imide-siloxane) on the ...
CHO, K   +5 more
core   +1 more source

A review on aromatic poly(ester-carbonate)s and transesterification resistant polyesters

open access: yes, 2008
The review discusses poly(ester-carbonate)s (PECAs for brief), their production, characterization and their use. Great emphasis is on their production via ester-carbonate exchange and in particular on the copolymer obtained when mixing and heating poly ...
Maurizio S, Montaudo
core  

Investigation of the surface rearrangement of poly(imide-siloxane) using dynamic contact angle measurements

open access: yes, 2019
Dynamic contact angle measurements and X-ray photoelectron spectroscopy (XPS) were used to investigate the surface compositions and surface rearrangement of poly(imide-siloxane) with various molecular weights and contents of amine-terminated poly ...
An, YT   +5 more
core   +1 more source

Preparation and characterization of semi-flexible thermotropic poly(ester-imide)s [PDF]

open access: yes, 1989
A series of novel poly(ester-1m1de)s were prepared by the reaction of meta- and para-substituted trlmellltimide dicarboxylic diacid chlorides with various diols containing four, five, six, seven, eight, nine, ten and twelve methylene groups by a solution
Facinelli, John V.
core   +1 more source

Thermoplastic Poly(ester urethane)s with Novel Soft Segments

open access: yes, 2016
A new class of thermoplastic poly(ester urethane)s containing novel soft segments are prepared using a one-step synthesis. Amorphous polyester prepolymers (⟨Mn⟩ = 1.5 × 103−3.4 × 103 g/mol) were incorporated as soft segments in poly(ester urethane)s ...
Andrew H. Brown (1987858)   +2 more
core   +1 more source

Water ingression into poly(imide-siloxane)s

open access: yes, 2008
The interaction of water vapor with the surface and bulk of poly(imidesiloxane) copolymers has been characterized in an attempt to determine the important factors in the copolymer's resistance to water ingression.
Kaltenecker-Commerçon, Joyce Marie, 1965-
core  

Siloxane-Based Main-Chain Poly(ionic liquid)s via a Debus–Radziszewski Reaction

open access: yes
Herein, we synthesized a series of siloxane-based poly­(ionic liquid)­s (PILs) with imidazolium-type species in the main chain via the multicomponent Debus–Radziszewski reaction.
Jiayin Yuan (1462375)   +3 more
core   +1 more source

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