Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Cellular products or processes of preparing a cellular...
Patent
1996-01-26
1997-02-25
Foelak, Morton
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Cellular products or processes of preparing a cellular...
521174, 521176, 568675, C08G 1862
Patent
active
056059396
ABSTRACT:
High resilience polyurethane foams exhibiting little or no shrinkage may be prepared from low unsaturation double metal cyanide catalyzed polyoxyalkylene polyols in amounts greater than 20 weight percent of the total polyol component, when low unsaturation poly(oxypropylene/oxyethylene) random polyols having less than 35 weight percent of an all polyoxypropylene block catalyzed by double metal cyanide catalysts and one or more external random polyoxypropylene/polyoxyethylene blocks each containing 2 weight percent or more oxyethylene moieties, and an unsaturation of less than 0.02 meq/g are employed.
REFERENCES:
patent: 4690955 (1987-09-01), Kilgour et al.
patent: 5010117 (1991-04-01), Herrington et al.
patent: 5157056 (1992-10-01), McGovern
patent: 5158922 (1992-10-01), Hinney et al.
patent: 5171759 (1992-12-01), Hager
patent: 5177119 (1993-01-01), Motte
patent: 5364906 (1994-11-01), Critchfield et al.
patent: 5496894 (1996-03-01), Critchfield et al.
"Urethane Applications for Novel High Molecular Weight Polyols", R. L. Mascioli, 32nd Ann. Polyurethane Technical/Marketing Conference, Oct. 1-4, 1989 pp. 139-142.
"Standard Methods of Testing Urethane Foam Polyol Raw Materials" ASTM Designation No.: D 2849-69.
Arco Chemical Technology L.P.
Foelak Morton
Kozak Dennis M.
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