Formo-phenolic resins

Castelain PY, Pirious A, Raulot-Lapointe H, Rabaglia JL (1980) Sensitization to abieto-formo-phenolic resin in printing ink. Contact Dermatitis 6 145... [Pg.595]

L. Baekeland developed the first industrial process for the production of a synthetic polymer formo-phenolic resins were produced under the name of bakelite. ... [Pg.3]

They correspond to the first industrial polymer synthesized since the process was first developed by Baekeland in 1907, and their production started in 1910. These materials are also called formo-phenolic resins but it is preferable to retain the term resin for the precursor of the network. These prepolymeric resins are obtained by polycondensation of formol (v = 2) with phenol (v = 3) or some of its analogs. [Pg.587]

On the contrary, certain formulations including polyfunctional resins tend to increase the viscosity of the prepolymeric mixture. This is true for epoxy resins prepared from prepolymeric novolac formo-phenolic resins (oligomerized in acidic medium) (see Section 16.3). These novolac resins are polyphenols that can react with epichlorhydrin to give polyepoxides. Their structure can be schematized by... [Pg.598]

Chemical structure of formo-phenolic resin precursors... [Pg.329]

The production of formo-phenolic materials is always carried out in two steps. The first one corresponds to the formation of an oligomer (resin) that is used as prepolymer, and its molecular structure depends on the pH of the reaction medium. The mechanism of these reactions is described in Section 7.4.2. [Pg.588]

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