Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – From carboxylic acid or derivative thereof
Patent
1996-07-22
1997-04-08
Acquah, Samuel A.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
From carboxylic acid or derivative thereof
528272, 528288, 528298, 528302, 528308, 5283086, 524714, 524770, C08G 6346, C08K 516
Patent
active
056189087
ABSTRACT:
Aromatic polyester resins having improved color characteristics obtained incorporating in the resins in the preparation phase of the resin by polycondensation of a diol with an aromatic bicarboxylic acid a violet toner formed of 9,10 anthraquinone -2-hydroxy-4-p-toluidine or having an absorption spectrum comparable to that of the above anthraquinone compound.
REFERENCES:
patent: 4304838 (1981-12-01), Hasegawa et al.
patent: 5393651 (1995-02-01), Hoshi
patent: 5397676 (1995-03-01), Yokoya et al.
Acquah Samuel A.
Manzo Edward D.
Murphy Mark J.
Sinco Engineering S.p.A.
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