Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Mixing of two or more solid polymers; mixing of solid...
Reexamination Certificate
2008-10-29
2011-10-25
Gulakowski, Randy (Department: 1766)
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Mixing of two or more solid polymers; mixing of solid...
C528S125000, C528S086000, C528S176000, C528S193000, C528S128000, C528S194000
Reexamination Certificate
active
08044151
ABSTRACT:
The present invention provides a wholly aromatic liquid-crystalline polyester consisting of the repeating units represented by formulae (I), (II), (III) and (IV):wherein:the molar proportion of the repeating unit represented by formula (I) based on the total repeating units constituting the wholly aromatic liquid-crystalline polyester is 40-80 mol %;the molar ratio of the total amount of the repeating units represented by formulae (II) and (III) to the repeating unit represented by formula (IV) is from 90/100 to 100/90;the molar proportion of the repeating unit represented by formula (II) based on the total amount of the repeating units represented by formulae (II) and (III) is 80-99.9 mol%; andthe two “—O—” attached to the benzene ring in formula (III) are positioned meta or para to each other and “Ar” in formula (IV) represents a bivalent aromatic group.The wholly aromatic liquid-crystalline polyester of the present invention exhibits excellent dielectric properties in high frequency regions as well as good mechanical properties such as impact strength.
REFERENCES:
patent: 2004/0152865 (2004-08-01), Okamoto et al.
patent: 2004/0164282 (2004-08-01), Okamoto et al.
patent: 2005/0256291 (2005-11-01), Okamoto et al.
patent: 2007-154169 (2007-06-01), None
Asahara Motoki
Kato Hiroyuki
Terada Hiroaki
Fang Shane
Gulakowski Randy
Sughrue & Mion, PLLC
Ueno Fine Chemicals Industry, Ltd.
LandOfFree
Wholly aromatic liquid-crystalline polyester does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Wholly aromatic liquid-crystalline polyester, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Wholly aromatic liquid-crystalline polyester will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4287354