Aqueous polyurethane dispersions based on 1-methyl-2,4-and/or -2

Details Aqueous polyurethane dispersions based on 1-methyl-2,4-and/or -2 Aqueous polyurethane dispersions based on 1-methyl-2,4-and/or -2

1997-03-06

1999-07-13

Niland, Patrick D.

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...

524839, 524840, C08J 300, C08K 320, C08L 7500

Patent

active

059228067

ABSTRACT:
The present invention relates to aqueous polyurethane dispersions having a resin solids content of 20 to 60 wt %, a viscosity at 23.degree. C. of 10 to 20,000 mPa.s and a pH of 5.5 to 8.5, wherein the polyurethane has a weight average molecular weight of 5,000 to 500,000 and a urethane group content (calculated as --NHCO--O--, molecular weight=59) of 2.5 to 15 wt %, and is based on a polyisocyanate component containing 50 to 100 wt % of 1-methyl-2,4- and/or -2,6-diisocyanatocyclohexane.
The present invention also relates to aqueous binder compositions containing these aqueous polyurethane dispersions and known crosslinking resins and to the use of the aqueous polyurethane dispersions and aqueous binder compositions as binders for glass fiber sizings.

REFERENCES:
patent: 3479310 (1969-11-01), Dieterich et al.
patent: 5055516 (1991-10-01), Fisch et al.
patent: 5157074 (1992-10-01), Metzger et al.
patent: 5194487 (1993-03-01), Jacobs
Kunststoffhandbuch, vol. 7, 3rd ed. (month unavailable) 1966, pp. 30 and 31.
D. Dieterich, Agnew. Makromol. Chem. 98 (month unavailable) 1981, 133.
H. Reiff, D. Dieterich, Agnew. Makromol. Chem. 26 (month unavailable) 1972, 85.

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