novolac resin

novolac resin

[′nō·və‚lak ′rez·ən]
(materials)
Any of the thermoplastic phenol-formaldehyde resins made with an excess of phenol in the reaction; used in varnishes.
References in periodicals archive ?
To overcome the challenges involved in installing flooring within this area, the MAIS team used fiberglass mesh reinforcement, epoxy novolac resin in each of the pits and the trenches and then completed the installation of a seamless monolithic surface from the top of the curbing to the floor drains.
Process for production of production of wood composites using a mixed pMDI/solid novolac resin binder.
The at least one silane can include a bis-amino silane, a vinyl silane, a bis-sulfur silane or mixtures thereof, and the polymeric resin may include an epoxy resin, acrylate resin, polyurethane resin, novolac resin, or mixtures thereof.
ii) A trifunctional novolac resin, DEN 431, which is produced by Dow, having an epoxy equivalent weight of 172-179 and an average functionality of 2.
Waterborne 1K co-dispersions of several Epoxy Resin and Phenolic Novolac Resin combinations are available that offer different levels of performance.
Thus, a composition containing epoxy resins, a cresol novolac modified epoxy resin, a brominated phenol novolac resin, modified siloxanes, silica and other additives was blended, crushed into a powder, transfer injection molded and cured for eight hours at 175[degrees]C to give a product having good spiral flow and crack resistance after 500 cycles at +150[degrees]C and -196[degrees]C and also good solder resistance (failure after 72 hours in steam and the next 10 seconds in solder at 260[degrees]C).
2, 3] prepared boron-containing novolac resin by modifying commercial novolac resin with bis(benzo-l,3,2-dioxaborolanyl)oxide.
A fusible (meltable) novolac resin is formed by cooking a phenol and a for-maldehyde blend in a reactor where the amount of formaldehyde is "shorted.
The aim of the present study was to improve the thermal properties of an epoxy cresol-formaldehyde novolac resin (ECN)/DDS system.
A Novolac resin also accounted for a significant proportion of the global demand and is the fastest growing product segment, deriving demand from the growing molded composites market as well as the laminates market.
At the present time, novolac resin polymers are widely applied to the matrix resin of g-line (436 nm), i-line (365 nm).
A is bisphenol-A novolac resin and B is phenolic novolac cure resin.