Polyisocyanurate foams of improved friability and process of pre

Details Polyisocyanurate foams of improved friability and process of pre Polyisocyanurate foams of improved friability and process of pre

1976-02-17

1986-02-04

Welsh, Maurice J.

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

Synthetic resins

Cellular products or processes of preparing a cellular...

521118, 521130, 521131, C08G 1814

Patent

active

045687013

ABSTRACT:
In a process of preparing a polyisocyanurate foam, which process comprises: reacting a plasticized polyisocyanate in the presence of a trimerization catalyst and an expanding amount of an inert blowing agent to provide a polyisocyanurate foam, the improvement which comprises: carrying out the reaction in the presence of from about four to twenty percent by weight of a surface-active organic silicone compound characterized by an active hydrogen functionality, and having a hydroxyl number of greater than about 30 and an equivalent weight of less than about 2000 and in the presence of a nonvolatile plasticizer to provide a polyisocyanurate foam of improved friability and good flame, heat and stability properties.

REFERENCES:
patent: 2834748 (1958-05-01), Bailey et al.
patent: 2917480 (1959-12-01), Bailey et al.
patent: 3634345 (1972-01-01), Diehr et al.
patent: 3799896 (1974-03-01), Moss
patent: 3872035 (1975-03-01), Papa et al.
patent: 3940517 (1976-02-01), De Leon
patent: 3981828 (1976-09-01), Demou et al.
patent: 3981829 (1976-09-01), Cenker et al.

Affiliated with

Also associated with

Rating

Polyisocyanurate foams of improved friability and process of pre does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Polyisocyanurate foams of improved friability and process of pre, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Polyisocyanurate foams of improved friability and process of pre will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2341234