Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Mixing of two or more solid polymers; mixing of solid...
Reexamination Certificate
2005-08-16
2005-08-16
Robertson, Jeffrey B. (Department: 1712)
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Mixing of two or more solid polymers; mixing of solid...
C525S418000, C525S425000, C525S437000, C525S439000, C525S440030, C525S443000, C525S444000, C525S452000, C525S453000, C525S454000, C525S457000, C525S458000, C525S459000, C524S589000, C524S590000, C524S599000, C524S601000, C524S602000, C524S606000
Reexamination Certificate
active
06930155
ABSTRACT:
A polyurethane composition comprising:A) from 3 to 35% by weight of a polymeric composition comprising1) at least one polymer and2) at least one thermoset in amounts of from 0.5 to 50% by weight, based on the sum of A1) and A2), prepared by reaction in the polymer matrix A1) ofa) at least one starting component containing NH2groups andb) at least one starting component containing NCO groups, a) and b) having simultaneously or independently a functionality of ≧2 and at least one starting component having a functionality of >2 being present in amounts of from 0.5 to 100% by weight, based on the weight of A2);B) from 15 to 45% by weight in the polymeric composition A), based thereon, of at least one amorphous and/or crystalline polyester having an OH number of from 10 to 250 mg KOH/g;C) from 7 to 25% by weight in the polymeric composition A), based thereon, of at least one curing agent based on blocked polyisocyanates, isocyanurates and/or uretdiones having a functionality of at least 1.7;D) from 1 to 50% by weight in the polymeric composition A), based thereon, of auxiliaries and additives; there being from 0.6 to 1.2 NCO groups per OH group of A) and B).
REFERENCES:
patent: 4847321 (1989-07-01), Hess et al.
patent: 4859760 (1989-08-01), Light, Jr. et al.
patent: 4880872 (1989-11-01), Thomas
patent: 4920173 (1990-04-01), Gras
patent: 5059634 (1991-10-01), Smith
patent: 5342884 (1994-08-01), Tabor et al.
patent: 5405920 (1995-04-01), Barbee et al.
patent: 5422414 (1995-06-01), Smith
patent: 5859164 (1999-01-01), Gras et al.
patent: 6025433 (2000-02-01), Shibatoh et al.
patent: 6420493 (2002-07-01), Ryckis-Kite et al.
patent: 6710136 (2004-03-01), Grenda et al.
patent: 2002/0045717 (2002-04-01), Grenda et al.
patent: 2004/0024114 (2004-02-01), Wenning et al.
U.S. Appl. No. 09/939,686, filed Aug. 28, 2001, Grenda et al.
U.S. Appl. No. 09/939,831, filed Aug. 28, 2001, Grenda et al.
U.S. Appl. No. 10/306,215, filed Nov. 29, 2002, Weiss et al.
U.S. Appl. No. 10/306,220, filed Nov. 29, 2002, Weiss et al.
U.S. Appl. No. 10/306,222, filed Nov. 29, 2002, Weiss et al.
U.S. Appl. No. 10/306,221, filed Nov. 29, 2002, Weiss et al.
Grenda Werner
Weiss Jörn Volker
Degussa - AG
Robertson Jeffrey B.
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