Nanoporous material fabricated using polymeric template strands

Details Nanoporous material fabricated using polymeric template strands Nanoporous material fabricated using polymeric template strands

2000-04-06

2000-12-05

Foelak, Morton

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

Synthetic resins

Cellular products or processes of preparing a cellular...

521134, 521138, 521139, 521181, 521182, 521184, 525450, 525534, C08J 902

Patent

active

061568120

ABSTRACT:
Compositions and methods are provided in which nanoporous polymeric materials are produced via stable, polymeric template strands having reactive groups that can be used for forming crosslinking functionalities and/or adding thermolabile groups, wherein at least some of the thermolabile groups are thermolyzed to produce voids. The template strands preferably comprise aromatic systems and vicinal keto groups, such as a polybenzil formed from fluorene bisphenol or 3,3'-dihydroxytolane with 4,4'-difluorobenzil. At least some of the reactive groups preferably react using an addition-elimination reaction. Especially preferred thermolabile groups comprise poly(propylene oxide), and especially preferred crosslinkers comprise ethynyl-moiety and tetracyclone moieties.

REFERENCES:
patent: 4661558 (1987-04-01), Bell et al.
patent: 5965679 (1999-10-01), Godschaix et al.

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