Eugene Francis Reilly

US Patent:

43200362, Mar 16, 1982

Filed:

Oct 16, 1980

Appl. No.:

6/197479

Inventors:

Riad H. Gobran - New Hope PA
Akio Takahashi - Solebury PA
Eugene P. Reilly - Lawrenceville NJ

Assignee:

American Can Company - Greenwich CT

International Classification:

C08G 828
C08H 502

US Classification:

524 14

Abstract:

Ligno-novolak resins, either in the form of physical blends of lignin and novolak resins or as synthetically derived from the reaction of lignin, phenol and an aldehyde in the presence of an acidic catalyst, are provided. The resins, including the physical blends, are curable to thermoset, substantially completely cross-linked resins in which the lignin is interreacted and cross linked through the action of a curing agent such as hexamethylenetetramine. The resins are useful in the production of molding compounds that exhibit properties that are at least comparable to those of compounds derived from novolak resins. Moreover, excellent heat deflection temperatures and superior electrical properties are exhibited by such molding compounds.