Chemistry of carbon compounds – Miscellaneous organic carbon compounds
Patent
1974-05-03
1976-11-09
Lee, Lester L.
Chemistry of carbon compounds
Miscellaneous organic carbon compounds
260 49, 260 50, 260 65, 260 78R, 2602564Q, C08G 6926, C08G 6940
Patent
active
039910156
ABSTRACT:
High molecular weight aromatic copolyamides which contain a small proportion of structural units having 2,3-(1H,3H)-quinazoline dione rings are disclosed. The presence of quinazolinedione ring units in the copolyamide results in an increased moisture absorption capacity. By using small amounts of quinazoline dione units, the good physical properties of the corresponding quinazoline dione-free polyamide are substantially retained while the moisture absorption is significantly increased. Larger amounts of quinazoline dione units than contemplated (15 mol percent and more) do not improve the moisture absorption further and adversely affect the physical properties. The copolyamides are useful in textile applications in which the improved moisture absorption serves to make clothing prepared from such textiles more comfortable.
REFERENCES:
patent: 3527732 (1970-09-01), Wolf et al.
patent: 3671614 (1972-06-01), Kunzel et al.
Bentz Francis
Blankenstein Gunther
Kleinschmidt Peter
Kunzel Hans Egon
Wolf Gerhard Dieter
Bayer Aktiengesellschaft
Lee Lester L.
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