Coating processes – With post-treatment of coating or coating material – Heating or drying
Patent
1995-01-05
1996-07-09
Lusignan, Michael
Coating processes
With post-treatment of coating or coating material
Heating or drying
4273855, 4273883, 4273898, 4273935, 525398, 525456, B05D 302
Patent
active
055343023
ABSTRACT:
A method for the preparation of a fiber reinforced modified phenolic resin composite, which comprises preparing a resole type phenolic resin having 60-75 wt % solid content and 5-10 wt % free aldehyde; preparing a blocked polyurethane resin having an average molecular weight of 2000-8000 and a viscosity of 500-1000 cps at 80.degree. C.; mixing the resole type phenolic resin, the blocked polyurethane resin and an acid catalyst at room temperature to form an impregnating resin, wherein the amount of the acid catalyst mixed is 2-10 wt %, based on the weight of the resole type phenolic resin, and the amount of the blocked polyurethane mixed is 5-20 wt %, based on the total weight of the mixed resins; and impregnating a plurality of filaments with the impregnating resin, and curing the impregnated filaments with a heat treatment to form a fiber reinforced modified phenolic resin composite.
REFERENCES:
patent: 3973071 (1976-08-01), Fahey
patent: 4919739 (1990-04-01), Dyksterhouse et al.
patent: 5176865 (1993-01-01), Beall et al.
Li Ming-Shiu
Ma Chen-Chi M.
Wu Hew-Der
Lusignan Michael
National Science Council
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