Difference between revisions of "Novolac"
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Soluble in ethanol. | Soluble in ethanol. | ||
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* G.S.Brady, ''Materials Handbook'', McGraw-Hill Book Co., New York, 1971 Comment: p. 297 | * G.S.Brady, ''Materials Handbook'', McGraw-Hill Book Co., New York, 1971 Comment: p. 297 | ||
Revision as of 13:15, 1 May 2016
Description
A thermoplastic phenol formaldehyde resin made in a two step process. The first step involves mixing formaldehyde with excess phenol to form a brittle, thermoplastic phenolic resin. Novolac is then crosslinked to produce an insoluble, thermoset material. This is done by reaction with epichlorohydrin, hexamethylenetetramine (hexa), or p-formaldehyde. Novolac has been made into fibers (novoloid) and used a high strength adhesive (Novolac® DEN 438).
Synonyms and Related Terms
novolac; novolak; novoloid fiber; phenol formaldehyde resin; Novolac®; Kynol®
Other Properties
Soluble in ethanol.
Sources Checked for Data in Record
- G.S.Brady, Materials Handbook, McGraw-Hill Book Co., New York, 1971 Comment: p. 297
- Theodore J. Reinhart, 'Glossary of Terms', Engineered Plastics, ASM International, 1988
- Richard S. Lewis, Hawley's Condensed Chemical Dictionary, Van Nostrand Reinhold, New York, 10th ed., 1993
- Marjory L. Joseph, Introductory Textile Science, Holt, Rinehart and Winston, Fort Worth, TX, 1986