Coating processes – Heat decomposition of applied coating or base material – Base material decomposed or carbonized
Patent
1991-02-01
1992-12-29
Bell, Janyce
Coating processes
Heat decomposition of applied coating or base material
Base material decomposed or carbonized
427228, 4273855, 4273899, 427421, 4274342, B05D 302
Patent
active
051750252
ABSTRACT:
Sizing agent for carbonizable fiber contains a high molecular compound having a weight average molecular weight of not less than 10,000 as obtainable by reacting (A) a polyalkylene oxide compound having a weight average molecular weight of not less than 100 as obtainable by addition-polymerizing an ethylene oxide-containing alkylene oxide with an organic compound containing two active hydrogen groups with (B) a polycarboxylic acid or the corresponding anhydride or lower alkyl ester or a diisocyanate. The sizing agent not only inhibits napping and binds fiber but, because of its good thermal decomposition behavior, does not cause glueing of fiber so that a substantial upgrading of carbon fiber is achieved without detracting from its strength. Furthermore, as the sizing agent does not become a tar, deposits within the carbonizing furnace are minimized and the trouble of furnace obstruction prevented.
REFERENCES:
patent: 3607672 (1971-09-01), Schmitt
patent: 3632391 (1972-01-01), Whitfield et al.
patent: 3723157 (1973-03-01), Druin
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