Organic compounds -- part of the class 532-570 series – Organic compounds – Carboxylic acid esters
Reexamination Certificate
2006-05-16
2006-05-16
Sergent, Rabon (Department: 1711)
Organic compounds -- part of the class 532-570 series
Organic compounds
Carboxylic acid esters
C252S182200, C252S182220, C528S059000, C528S067000, C528S076000, C528S077000, C560S115000, C560S158000, C560S330000, C560S334000, C560S335000, C560S355000, C560S359000, C560S360000
Reexamination Certificate
active
07045650
ABSTRACT:
A polyol composition having a number average molecular weight of from about 1,000 to about 3,000 Daltons is made up of (1) at least 60% by weight of a low monol polyoxypropylene polyol having a number average molecular weight of from about 2,000 to 12,000 Da and a degree of unsaturation less than or equal to 0.02 meq/g and (2) no more than 40% by weight of a polyol having a number average molecular weight of from about 400 to about 1,000 Da and a polydispersity index greater than 1.1. This polyol composition is reacted with a diisocyanate, a polyisocyanate, an isocyanate-terminated prepolymer or an isocyanate-terminated quasi-prepolymer to produce polyurethane elastomers having good physical and mechanical properties. Any of the known processes for producing polyurethane elastomers, including one-shot processes, may be used to produce elastomers in accordance with the present invention.
REFERENCES:
patent: 5648447 (1997-07-01), Seneker et al.
patent: 5668239 (1997-09-01), Nodelman et al.
patent: 5670601 (1997-09-01), Allen et al.
patent: 5677413 (1997-10-01), Barksby et al.
patent: 5696221 (1997-12-01), Barksby et al.
patent: 5708118 (1998-01-01), Seneker et al.
patent: 5728745 (1998-03-01), Allen et al.
patent: 5739253 (1998-04-01), Nodelman et al.
patent: 5792829 (1998-08-01), Allen et al.
patent: 5843357 (1998-12-01), Seneker et al.
patent: 5849944 (1998-12-01), Allen et al.
patent: 5965778 (1999-10-01), Allen et al.
patent: 6008263 (1999-12-01), Thompson et al.
patent: 6066683 (2000-05-01), Beisner et al.
patent: 6420445 (2002-07-01), Barksby et al.
patent: 6824703 (2004-11-01), Lawrey et al.
patent: 93/24549 (1993-12-01), None
Barksby Nigel
Frisch Kurt C.
Lawrey Bruce D.
Bayer Materialscience LLC
Gil Joseph C.
Sergent Rabon
Whalen Lyndanne M.
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