Stable polymer latex and process for making same
Patent 3988278 Issued on October 26, 1976. Estimated Expiration Date: 
October 26, 1993. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
October 26, 1993. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent ReferencesInventorApplicationNo. 064564 filed on 08/17/1970US Classes:524/839, Solid polymer or SICP derived from -N=C=X (X is chalcogen) containing reactant528/45From at least one blocked -N=C=X groupExaminersPrimary: Lieberman, PaulAssistant: Koeckert, A. H. Attorney, Agent or FirmAbstractThe disclosed self-emulsified polyurethane polyurethane-polyurea latices are formed by chain extending in water a prepolymer which contains per molecule about two isocyanate groups at the ends of a chain and attached to some of the prepolymer chains a pendant group having at its remote end a salt-forming group or a hydrophilic group which produces the self-emulsifying characteristic. | |
