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US 4,729,925 AGranted
Polyurethane elastomers comprising a charge-control agent and shaped elements therefrom
AssigneeEastman Kodak Company
InventorsTsang J. Chen, Donald A. Upson, Paul D. Yacobucci
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Abstract
Herein are disclosed polyurethane elastomers comprising a charge-control agent of the formula: ##STR1## The elastomers are useful in making shaped articles.
Claims7
A polyurethane elastomer formed from a composition comprising in approximately stoichiometric amounts:
- (a) a polyisocyanate prepolymer which is the reaction product of:
- (i) an aliphatic polyisocyanate, and
- (ii) an amine-based polyol;
- and
- (b) a hardening mixture comprising:
- (i) a polyol selected from the group consisting of amine-based polyols, polyether polyols and mixtures thereof, and
- (ii) from 1 to 8 weight percent based on the total weight of (b) of a charge-control agent having the formula:
- ##STR11## R.sup.1 represents ##STR12## R.sup.6 represents sulfonate, oxyphenylene sulfonate, oxycyclohexylene sulfonate or p-toluenesulfonamidosulfonyl;
- m and n are integers which together are of sufficient value to achieve an R.sup.1 molecular weight of 300 to 30,000;
- M represents hydrogen, an alkali metal, ammonium or P.sup.+ (C.sub.6 H.sub.5).sub.3 CH.sub.3.
7 more elements
A crosslinked polyurethane elastomer comprising from 0.004 to 0.01 mole percent of a copolymerized polyol charge-control agent having the formula:
- ##STR14## R.sup.1 represents ##STR15## R.sup.6 represents sulfonate, oxypheylene sulfonate, oxycyclohexylene sulfonate or p-toluenesulfonamidosulfonyl;
- m and n are integers which together are of sufficient value to achieve an R.sup.1 molcular weight of 300 to 30,000;
- and
- M represents hydrogen, an alkali metal, ammonium or P.sup.+ (C.sub.6 H.sub.5).sub.3 CH.sub.3.
1 more element
Dependencies are inferred from the claim text.