초록

Disclosed is a process for the production of organic aerogels, whereby the organic solvent in which the gel is immersed is directly extracted supercritically without the need for exchange with a low temperature solvent (i.e., CO.sub.2) prior to extraction of the pore fluid.

대표청구항 ▼

[ We claim:] [1.] A process for producing organic aerogels, said process comprising the steps of:(a.) forming a solution comprising a predetermined amount of organic aerogel precursor chemicals, a predetermined amount of polymerization promoting catalyst, and an organic solvent;(b.) adding said solu

[ We claim:] [1.] A process for producing organic aerogels, said process comprising the steps of:(a.) forming a solution comprising a predetermined amount of organic aerogel precursor chemicals, a predetermined amount of polymerization promoting catalyst, and an organic solvent;(b.) adding said solution to a mold;(c.) holding said mold containing said solution within a closed vessel;(d.) optionally heating and pressurizing said vessel sufficiently to cause said solution to form a stable gel;(e.) heating and pressurizing said vessel to the point where said organic solvent of said solution is near to, at, or above supercritical conditions; and,(f.) venting said vessel to extract said organic solvent from the pores of said gel.