Process for the production of compounds containing hydroxyl grou

Details Process for the production of compounds containing hydroxyl grou Process for the production of compounds containing hydroxyl grou

1995-04-26

1996-04-16

Foelak, Morton

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

Synthetic resins

Process of treating scrap or waste product containing solid...

C08J 1104

Patent

active

055083129

ABSTRACT:
Compounds containing hydroxyl groups, which are suitable for the polyisocyanate addition polymerization process, are prepared from polyurethane-polyurea and/or polyurea waste materials. These compounds are produced by reacting a finely divided polyurethane-polyurea and/or polyurea waste material with a low molecular weight diol and/or polyol (and optionally a higher molecular weight polyol) and a low molecular weight urea and/or carbamic acid ester. This reaction may be carried in either one stage or two stages. In the two stage process, the waste material and diol/polyol are reacted in a first stage at a temperature of from about 100 to about 260.degree. C. In the second stage, the amine-containing alcoholysis product obtained in the first stage is reacted with a low molecular weight urea and/or carbamic acid ester. In the single stage process, the polyurethane-polyurea and/or polyurea waste material is reacted with a low molecular weight diol and/or polyol in the presence of a low molecular weight urea and/or carbamic acid ester.

REFERENCES:
patent: 3983087 (1976-09-01), Tucker et al.
patent: 4039568 (1977-08-01), Sakai et al.
patent: 4316992 (1982-02-01), Gerlock et al.
patent: 4317939 (1982-03-01), Gerlock et al.
patent: 4439546 (1984-03-01), Brennan et al.
patent: 4451583 (1984-05-01), Chesler
patent: 4511680 (1985-04-01), Niederellmann et al.
patent: 5338763 (1994-08-01), Munzamy et al.
patent: 5410008 (1995-04-01), Bauer
Database WPI, Wk 7931, AN 79-57188B & JP-A-54 078 798 (Asahi Electrochem Ind KK) Jun. 1979.

Affiliated with

Also associated with

Rating

Process for the production of compounds containing hydroxyl grou 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 the production of compounds containing hydroxyl grou, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for the production of compounds containing hydroxyl grou will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-325539