Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Cellular products or processes of preparing a cellular...
Patent
1999-09-10
2000-07-04
Foelak, Morton
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Cellular products or processes of preparing a cellular...
521183, 521184, 521189, 521134, C08J 936
Patent
active
060840005
ABSTRACT:
A shaped article composed of an aromatic polyimide has a hollow, essentially spherical structure and a particle size of about 100 to about 1500 .mu.m, a density of about 1 to about 6 pounds/ft.sup.3 and a volume change of 1 to about 20% by a pressure treatment of 30 psi for 10 minutes at room temperature. A syntactic foam, made of a multiplicity of the shaped articles which are bonded together by a matrix resin to form an integral composite structure, has a density of about 3 to about 30 pounds/ft.sup.3 and a compression strength of about 100 to about 1400 pounds/in.sup.2.
REFERENCES:
patent: 4407980 (1983-10-01), Gagliani et al.
patent: 4425441 (1984-01-01), Gagliani et al.
patent: 4433068 (1984-02-01), Gagliani et al.
patent: 4946737 (1990-08-01), Lindeman
patent: 4956393 (1990-09-01), Boyd et al.
patent: 5120769 (1992-06-01), Dyksterhouse et al.
patent: 5234752 (1993-08-01), Wong
patent: 5356958 (1994-10-01), Matthews
Echigo Yoshiaki
Kaneshiro Hisayasu
St. Clair Terry L.
Weiser Erik S.
Foelak Morton
Hawkins Hillary W.
The United States of America as represented by the Administrator
LandOfFree
Hollow polyimide microspheres does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Hollow polyimide microspheres, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Hollow polyimide microspheres will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1487105