Method of preparing naphthol-modified phenolic resin

Details Method of preparing naphthol-modified phenolic resin Method of preparing naphthol-modified phenolic resin

1994-02-08

1995-10-17

Sellers, Robert E.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

From phenol, phenol ether, or inorganic phenolate

528129, 528137, 528143, 528155, 525480, 525481, 525501, 525534, C08G 804, C08G 1404

Patent

active

054592232

ABSTRACT:
A naphthol-modified phenolic resin having low softening point and good flowability is obtained by allowing a naphthol and a phenol to react with an aldehyde in the presence of an acid catalyst at 60.degree. to 110.degree. C. to obtain a primary reaction mixture, heating the primary reaction mixture in the presence of a strong acid, a super acid or a mixture thereof under ambient pressure at 120.degree. to 180.degree. C. for 1 to 12 hours to obtain a secondary reaction mixture, and subjecting the secondary reaction mixture to vacuum concentration or steam distillation, and the naphthol-modified phenolic resin is suited to use as a curing agent in epoxy resin molding materials for sealing electronic parts.

REFERENCES:
patent: 3862260 (1975-01-01), Sellers et al.
patent: 4404357 (1983-09-01), Taylor et al.
patent: 4424315 (1984-01-01), Taylor et al.
patent: 5023311 (1991-06-01), Kubota
patent: 5206333 (1993-04-01), Sue et al.
patent: 5302673 (1994-04-01), Naka et al.
Patent Abstracts of Japan, vol. 17, No. 668, 9 Dec. 1993.

Affiliated with

Also associated with

Rating

Method of preparing naphthol-modified phenolic resin does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method of preparing naphthol-modified phenolic resin, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method of preparing naphthol-modified phenolic resin will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-598273