Sulfite or bisulfite hair-waving composition containing a wave accelerating agent
Patent 3966903 Issued on June 29, 1976. Estimated Expiration Date: 
June 29, 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.
June 29, 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 References 2116521 2540980 2719104 2836543 3025218 3071515 3075821 3215605 3567363 3715429 InventorsAssigneeApplicationNo. 462603 filed on 04/22/1974US Classes:424/70.4, Metal salt containing132/210, Hair deformation or set (e.g., curling, waving)424/70.5, Sulfur compound containing514/777, Carbohydrate or lignin, or derivative8/127.51HairExaminersPrimary: Turner, A. A.Assistant: Clarke, Vera C. Foreign Application Priority Data1973-05-04 JAAbstractA hair-waving composition which comprises (A) at least one main waving agent selected from sulfites and bisulfites and (B) at least one wave accelerating agent selected from alkylene carbonates of the general formula: ##EQU1## wherein R1, R2, R3 and R4 each stand independently for hydrogen atom, methyl group, ethyl group, hydroxyethyl group or hydroxy methyl group, alkyl carbamates of the general formula: ##EQU2## wherein R1, R2 and R3 each stand independently for hydrogen atom, methyl group, ethyl group or propyl group, and γ- or δ-lactones of the general formula: ##EQU3## wherein R1, R2 and R3 each stand for hydrogen atom or methyl group, and n for an integer of 0 or 1. This composition can set strong permanent waves with greater safety within the pH range of human skin at a low temperature without any unpleasant odor. | |
