C - Chemistry – Metallurgy – 08 – L
Patent
C - Chemistry, Metallurgy
08
L
C08L 75/04 (2006.01) C03C 17/32 (2006.01) C03C 25/26 (2006.01) C03C 25/32 (2006.01) C08G 18/08 (2006.01) C08G 18/12 (2006.01) C08G 18/28 (2006.01) C08G 18/32 (2006.01) C08G 18/70 (2006.01) C08G 18/72 (2006.01) C08L 75/02 (2006.01) C09D 175/04 (2006.01)
Patent
CA 2492338
Size compositions that include one or more polyurethane-polyurea dispersions; optionally further film-forming resins; and optionally crosslinkers. The dispersions are obtained by preparing an NCO-containing polyurethane prepolymer by reacting polyisocyanates with polymeric polyols and/or polyamines, optionally low molecular weight compounds, isocyanate-reactive, ionically or potentially ionically hydrophilicizing compounds and/or isocyanate- reactive nonionically hydrophilicizing compounds, and optionally in inert solvents with the proviso that none of components contains primary or secondary amino groups; followed by either dissolving the prepolymer in aliphatic ketones or, diluting the prepolymer solution by further addition of aliphatic ketones; and reacting the remaining free NCO groups of the prepolymer with a chain extender component. The dispersions are used in mouldings and/or coatings that can be used to caot substrates, such as glass fibers.
Feller Thomas
Meixner Juergen
Rische Thorsten
Bayer Materialscience Ag
Ogilvy Renault Llp/s.e.n.c.r.l.,s.r.l.
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