申请人:The United States of America as represented by the Secretary of the Navy
公开号:US04304896A1
公开(公告)日:1981-12-08
The synthesis and subsequent polymerization of highly aromatized phthalonile monomers which contain phenoxy linkages having a substantially aromatic spacer moiety between the two terminal phthalonitrile groups is disclosed. The phthalonitriles are synthesized by a nucleophilic displacement of a nitro substituent, which is activated by the ring cyano groups on the aromatic ring, by a phenoxide containing unit. The phthalocyanine polymers have improved toughness, low water absorptivity and higher thermal and oxidative resistance than currently available polymers.
BEARING INCLUDING A PHTHALONITRILE-BASED POLYMER MATERIAL
申请人:Roller Bearing Company of America, Inc.
公开号:EP3396183A1
公开(公告)日:2018-10-31
A bearing including a phthalonitrile-based polymer material. In one embodiment, the bearing is configured to withstand a temperature condition of at least 600°F.