Results 181 to 190 of about 947 (216)
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Development of a Renewable Hybrid Resin System by Blending Isocyanate with Novolac Phenolic Resins
Forest Products Journal, 2020Abstract The objective of this study was to develop a performance-competitive bio-based hybrid resin system composed of methylene diphenyl diisocyanate (MDI) resin and novolac phenol-formaldehyde (PF) resin for engineered wood panel manufacturing. A novolac PF resin and a bio-oil–modified PF resin were blended with MDI at weight ratios of PF to
Qi Li +4 more
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Structure and property relationships of fractionated novolac resins
SPIE Proceedings, 1997In previous paper', we described the performance of near-monodisperse novolak resins obtained through supercritical fluid extraction. The low molecular weight partner was found to be the key element for high contrast and high resolution of the reconstructed tandem resists.
K. Rex Chen +4 more
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The use of liquid chromatography for the characterization of novolac resins
Journal of Applied Polymer Science, 1993AbstractNovolac resins made by condensation of phenol or p‐cresol with formaldehyde in various mole ratios were analyzed by reversed‐phase high‐performance liquid chromatography (HPLC) and gel permeation chromatography (GPC). Number‐average molecular weights (Mn) of phenol novolacs were determined by GPC and vapor‐phase osmometry (VPO) and compared.
Ŝ. Podzimek, L. Hroch
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Hydrogen bonding in the novolac type phenolic resin blended with phenoxy resin
Polymer, 1997Abstract The hydrogen bond formation between novolac type phenolic resin (phenolic) and polyhydroxyl ether of bisphenol A (Phenoxy resin) were verified by infra-red (i.r.), gel permeation chromatography (g.p.c.) and nuclear magnetic resonance (n.m.r.). The i.r. spectrum of the ‘free’ hydroxyl group of the blend shows a maximum absorption area with 25
Hew-Der Wu, Chen-Chi M. Ma, Peter P. Chu
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Preparation and performances of bisphthalonitrile resin and novolac cyanate ester resin blends
Polymer Bulletin, 2019Bisphthalonitrile (BPh) resin was modified by diallyl bisphenol A/bismaleimide resin prepolymer (DP/BMI). Differential scanning calorimeter (DSC) and Fourier transform infrared spectroscopy were used to characterize the curing acceleration of modified bisphthalonitrile (MBPh) resin.
Hongfeng Li +5 more
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Journal of Macromolecular Science, Part A, 1997
Abstract To study the effect of water affinity of the cured epoxy resin on water sorption and permeation in the cured epoxy resin, a novel hardener (esterfied phenol novolac was synthesized and used for obtaining the cured product without free hydroxyl group.
X. W. Luo +4 more
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Abstract To study the effect of water affinity of the cured epoxy resin on water sorption and permeation in the cured epoxy resin, a novel hardener (esterfied phenol novolac was synthesized and used for obtaining the cured product without free hydroxyl group.
X. W. Luo +4 more
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The chemistry of novolac resins — V. Reactions of benzoxazine intermediates
Polymer, 1998Abstract As part of our study on the curing reactions between novolac resins and hexamethylenetetramine (HMTA), a model benzoxazine, 3-(3,5-dimethyl-2-hydroxybenzyl)-6,8-dimethyl-3,4-dihydro-(2H)-1,3-benzoxazine, was heated under carefully controlled conditions, and the structural changes were studied by 13 C and 15 N n.m.r. spectroscopy.
Xiaoqing Zhang +2 more
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Photocrosslinkable resins from novolac–epoxide reaction
Journal of Polymer Science: Polymer Chemistry Edition, 1975S. P. Panda, D. S. Sadafule
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Study on curing of novolac epoxy resin
Journal of Thermal Analysis, 1993J. P. Agrawal, N. M. Bhide, S. R. Naidu
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Novolacs: Synthetic Resins Suitable for Mounting Biological Materials
Transactions of the American Microscopical Society, 1980W G, Crumpton, R G, Wetzel
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