Process for preparing polyhydroxystyrene with a novolak type str

Details Process for preparing polyhydroxystyrene with a novolak type str Process for preparing polyhydroxystyrene with a novolak type str

1995-06-16

1996-10-15

Foelak, Morton

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

Synthetic resins

From phenol, phenol ether, or inorganic phenolate

528207, 528210, 528214, 528217, 528332, 528361, 528363, 528271, C08G 6538

Patent

active

055655440

ABSTRACT:
A process for preparing a polyhydroxystyrene having a novolak type structure which comprises the step of polymerizing a mixture of carboxylic acid and at least one substituted phenyl carbinol whose formula is: ##STR1## wherein (a) R.sub.1 is selected from the group consisting of H, alkyl C.sub.1 -C.sub.20, substituted and unsubstituted phenyl, and C(O)R.sub.8 (where R.sub.8 is alkyl C.sub.1 -C.sub.20); (b) R.sub.2 is selected from the group consisting of H and alkyl C.sub.1 -C.sub.20 ; and (c) R.sub.3 -R.sub.7 are each independently selected from the group consisting of H, alkyl C.sub.1 -C.sub.20, OR.sub.9 (where R.sub.9 is H, alkyl C.sub.1 -C.sub.20, esters thereof, or substituted and unsubstituted phenyl), halogen, BZT, nitro, or amino, with the proviso that at least one of R.sub.3 -R.sub.7 is OR.sub.9, in the presence of a suitable catalyst for a sufficient period of time and under suitable conditions of temperature and pressure to form said novolak type polymer.

REFERENCES:
patent: Re34122 (1992-11-01), Sheehan et al.
patent: 4032513 (1977-06-01), Fujiwara et al.
patent: 4880487 (1989-11-01), Sheehan et al.
patent: 5264528 (1993-11-01), Sheehan et al.
patent: 5342727 (1994-08-01), Vicari et al.

Affiliated with

Also associated with

Rating

Process for preparing polyhydroxystyrene with a novolak type str does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Process for preparing polyhydroxystyrene with a novolak type str, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for preparing polyhydroxystyrene with a novolak type str will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1247172