Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – From carboxylic acid or derivative thereof
Patent
1989-06-07
1992-04-28
Kight, III, John
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
From carboxylic acid or derivative thereof
528125, 528129, 528170, 528172, 528173, 528310, 528331, 528332, 528336, 528345, 528348, 528353, C08G 6926, C08F 2240, C08F 2606
Patent
active
051091054
ABSTRACT:
Polyamide advanced composites are formed by the condensation of diacid halides (or dicarboxylic acids) and diamines in a linear or multidimensional morphology with crosslinkable end caps that provide improved solvent-resistance. The diamines and diacid halides generally include "sulfone" linkages in aryl chains to impart the desired combination of physical properties to the oligomers, prepregs, and composites. Linear oligomers have mono- or difunctional crosslinking end caps at the ends of polyarylamide chains. Multidimensional oligomers have a hub and three or more radiating amide arms, each arm having a mono- or difunctional crosslinking end cap at its distal end.
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Lubowitz Hyman R.
Sheppard Clyde H.
Hampton-Hightower P.
Kight III John
The Boeing Company
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