Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – From reactant having at least one -n=c=x group as well as...
Patent
1985-02-04
1986-05-06
Welsh, Maurice J.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
From reactant having at least one -n=c=x group as well as...
528 61, 528 65, 528 66, 528 73, C08G 1838
Patent
active
045873224
ABSTRACT:
Urethane-modified polyisocyanate compositions are made by reacting (a) an organic polyisocyanate or mixture of polyisocyanates having an NCO-content of from 5 to 45 wt % with (b) a hydantoin having an OH number of from 56 to 596 and containing two alcoholic hydroxyl groups. These reactants are used in quantities such that the NCO:OH equivalent ratio is from 2:1 to 50:1. The preferred polyisocyanates are 4,4'-diisocyanatodiphenylmethane and isomer mixtures thereof. The most preferred hydantoin is 5,5-dimethyl hydantoin. These urethane-modified polyisocyanates are particularly useful in the production of polyisocyanate addition products such as polyurethanes and polyisocyanurates.
REFERENCES:
patent: 2850474 (1958-09-01), Marey
patent: 2995530 (1961-08-01), Frisch et al.
patent: 3365426 (1968-01-01), Walles
patent: 3635845 (1972-01-01), Porret et al.
patent: 3644457 (1972-02-01), Konig et al.
patent: 3681282 (1972-08-01), Preston
patent: 3839354 (1975-05-01), Habermeier et al.
patent: 3883571 (1975-05-01), Allport
patent: 3928289 (1975-12-01), Reilly et al.
patent: 4002798 (1977-01-01), Morgan
patent: 4017650 (1977-04-01), Morgan
patent: 4031026 (1977-06-01), Hobertson
patent: 4055548 (1977-10-01), Carleton et al.
patent: 4115429 (1978-09-01), Roliff
patent: 4118411 (1978-10-01), Roliff et al.
patent: 4125545 (1978-11-01), Kreplinski
patent: 4229347 (1980-10-01), Holt
patent: 4234714 (1980-11-01), Earing et al.
patent: 4261852 (1981-04-01), Carroll et al.
patent: 4321333 (1982-03-01), Alberimo et al.
Paul Reiner
Rasshofer Werner
Bayer Aktiengesellschaft
Gil Joseph C.
Harsh Gene
Welsh Maurice J.
Whalen Lyndanne M.
LandOfFree
Process for the production of urethane-modified polyisocyanate c 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 urethane-modified polyisocyanate c, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for the production of urethane-modified polyisocyanate c will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1575293