Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – At least one aryl ring which is part of a fused or bridged...
Patent
1978-10-02
1985-11-19
Lieberman, Allan M.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
At least one aryl ring which is part of a fused or bridged...
524589, 524590, 524839, 524840, C08L 7504
Patent
active
045543089
ABSTRACT:
Stable aqueous dispersions of crosslinked polyurethane particles are disclosed. Preferably the aqueous dispersions coalesce, upon drying, to form continuous films. The aqueous dispersions of crosslinked polyurethane particles are formed by reacting a mixture of polyfunctional hydrogen compounds, one of which has an ionically neutralizable solubilizing group thereon and one of which has a functionality of three or more, with a diisocyanate to form a non-crosslinked or ungelled prepolymer. The solubilizing group is neutralized and the prepolymer is dispersed in water. The prepolymer is chain extended with water or an aqueous solution of a water soluble diamine to form an isocyanate free dispersion of crosslinked polyurethane polymer.
REFERENCES:
patent: 3412054 (1968-11-01), Milligan et al.
patent: 3870684 (1975-03-01), Witt et al.
patent: 3923713 (1975-12-01), Hermann
patent: 3948837 (1976-04-01), Schmitt et al.
patent: 4016122 (1977-04-01), Matsuda et al.
patent: 4046729 (1977-09-01), Scriven et al.
patent: 4092286 (1978-05-01), Noll et al.
patent: 4147679 (1979-04-01), Scriven et al.
patent: 4203883 (1980-05-01), Hangauer
patent: 4387181 (1983-06-01), Brown et al.
Flory, Principles of Polymer Chemistry, pp. 347-354, 1953.
Lieberman Allan M.
Wilmington Chemical Corporation
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