Aqueous urethane polyol and coating composition containing...

Details Aqueous urethane polyol and coating composition containing... Aqueous urethane polyol and coating composition containing...

2006-03-14

2006-03-14

Niland, Patrick D. (Department: 1714)

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

At least one aryl ring which is part of a fused or bridged...

C427S372200, C427S385500, C524S839000, C524S840000, C525S123000, C525S440030

Reexamination Certificate

active

07012115

ABSTRACT:
The present invention provides an aqueous urethane polyol comprising a hydroxyl group, a urethane group and a hydrophilic groups in a molecule, wherein: an average number of hydroxyl group is 3 to 20; a hydroxyl value is 10 to 200 (mg KOH/g); an equivalent ratio of (urethane group)/(hydroxyl group+hydrophilic group) is 1 to 2; and a number average molecular weight is 1,000 to 20,000.

REFERENCES:
patent: 5710209 (1998-01-01), Blum et al.
patent: 2 073 609 (1981-10-01), None
patent: 2 200 644 (1988-08-01), None
patent: 62-151419 (1987-07-01), None
patent: 63-175079 (1988-07-01), None
patent: 2-3465 (1990-01-01), None
patent: WO 96/40813 (1996-12-01), None
patent: WO 98/16583 (1998-04-01), None
Derwent abstract of JP 63175079 A.
Derwent abstract of JP 62151419 A.
Derwent abstract of JP 2-3465 A.

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