Chemistry of carbon compounds – Miscellaneous organic carbon compounds
Patent
1977-04-07
1978-10-10
Rzucidlo, Eugene C.
Chemistry of carbon compounds
Miscellaneous organic carbon compounds
260 292TN, 528 45, C08L 7508
Patent
active
041196023
ABSTRACT:
Disclosed herein are aqueous dispersions of blocked hydrophilic polyether urethane prepolymers and codispersions thereof with synthetic polymer latices. Also disclosed are methods of preparing the dispersions as well as polyurethane coatings and films prepared therewith. The dispersion/codispersions are characterized by good mechanical stability and resistance to freeze - thaw cycles. Coatings, films and impregnated articles prepared therefrom possess good physical properties. Coatings and films prepared from codispersions containing acrylic latex possess physical properties, chemical solvent resistance, etc. comparable to solvent-based urethanes.
REFERENCES:
patent: 3898197 (1975-08-01), Guise et al.
patent: 3903232 (1975-09-01), Wood et al.
patent: 3998768 (1976-12-01), Pettit, Jr.
patent: 4039517 (1977-08-01), Hamamura et al.
Alexander Robert R.
Isgur Irving E.
Moy Thomas P.
McCarter Lowell H.
Parker C. Edward
Rzucidlo Eugene C.
W. R. Grace & Co.
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