Title: Lignosulfonate-phenol-formaldehyde resin binder

Abstract: A method of manufacturing a lignosulfonate-phenol-formaldehyde resin includes heating a mixture of phenol, formaldehyde, lignosulfonate and alkali at a temperature of 60° C. to 100° C. and a pH of 8-13. The lignosulfonate comprises about 5 to about 80 percent of the total weight of phenol, formaldehyde and lignosulfonate and the lignosulfonate is mixed with said phenol and formaldehyde before substantial reaction between said phenol and said formaldehyde. Also disclosed are fibrous articles manufactured using this resin as a binder.

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Inventors: Janiga, Eugene R. (Roselle, IL)

Application Number: 06/427841
Filing Date: 1982-09-29
Publication_date: 1983-12-27
Assignee: MASONITE CORP (US)

Primary Class(es): 524/14 527/403, 524/702, 524/595, 524/841
Other Classes: C08G8/28; C08G16/02; C08H5/02; C08L61/14; C08L97/02; C08G8/00; C08G16/00; C08H5/00; C08L61/00; C08L97/00; C08H5/02; C08
US Patent Ref:

2148893	February, 1939	Bauer	527/403	Process for preparing tanning agents
2168160	August, 1939	Hochwalt et al.	527/403	Production of phenol-aldehydelignin resins
3790442	February, 1974	Ashall	527/403
3940352	February, 1976	Wennerblom et al.	527/403	Process for preparation of lignin resin

Other Refs:
Primary Examiner: Nielsen, Earl A.
Assistant Examiner:
Attorney: Mason, Kolehmainen, Rathburn & Wyss

Claims: