Permanent waving composition

• US 5,350,572 A
• Filed: 02/18/1993
• Issued: 09/27/1994
• Est. Priority Date: 02/18/1993
• Status: Expired due to Term

• Current Assignee: Shiseido Company Limited
• Original Assignee: Shiseido Company Limited
• Inventors: Savaides, Andrew, Salce, Ludwig
• Primary Examiner(s): Page, Thurman K.
• Assistant Examiner(s): LANE, SALLY GARDNER
• Application Number:
  US08/019,207
• Time in Patent Office: 586 Days
• Field of Search: 424/71, 424/72, 514/706, 514/712
• US Class Current: 424/70.5
• CPC Class Codes: A61K 8/46 containing sulfur A61K8/44 takes precedence
• CPC Class Codes: A61Q 5/04 Preparations for permanent waving or straightening the hair

Abstract

An entirely new class of reducing agents with substantially enhanced beneficial results is attained by employing polyoxyethyleneglycol dimercaptoalkylester compounds in a permanent waving lotion. This new class of reducing agents are water soluble, non-volatile and provide a substantially reduced malodor effect. Furthermore, by employing the dithiol compounds of the present invention as the reducing agent, long lasting hair conditioning and enhanced physical attributes, such as shine, luster, softness, manageability, and hair thickness, are also realized.

Claims

1. A hair reducing or permanent waving lotion for use in the permanent waving of hair, said lotion comprising

A. between about 5% and 40% by weight of the total composition of a reducing agent comprising at least one polyoxyethyleneglycol dimercaptoalkyl-ester having the formula

View Dependent Claims (2, 3, 4)

2. The permanent waving lotion defined in claim 1, wherein said lotion is further defined as comprising an alkaline agent selected from the group consisting of ammonium, monoethanolamine, diethanolamine, triethanolamine, ammonium carbonate, and bicarbonate in sufficient amount to adjust the pH of the lotion to range between about 6.5 and 10.

3. The permanent waving lotion defined in claim 2, wherein the penetrating agent is further defined as comprising one selected from the group consisting of urea, pyrrolidone and phytantriol.

4. The permanent waving lotion defined in claim 3, wherein the reducing agent is further defined as comprising between about 20% and 30% by weight of the lotion composition.

5. A process for providing enhanced permanent waving of hair with substantially less malodor being produced, said process comprising the steps of

A. forming a permanent waving lotion comprising

a. between about 5% and 40% by weight of a polyoxyethyleneglycol dimercaptoalkylester compound having the formula

View Dependent Claims (6, 7, 8, 9, 10, 11)

6. The process defined in claim 5, wherein said permanent waving lotion is further defined as comprising an alkaline agent selected from the group consisting of ammonium, monoethanolamine, diethanolamine, triethanolamine, ammonium carbonate, and bicarbonate in sufficient amount to adjust the pH of the permanent waving lotion to range between about 6.5 and 10.

7. The process defined in claim 5, comprising the additional step of

H. heating the hair during the processing of the permanent waving lotion.

8. The process defined in claim 7, wherein said hair is further defined as being heated to a temperature ranging between about 35°

C. and 75°

C.

9. The process defined in claim 5;

wherein the permanent waving lotion is further defined as being prepared by intermixing all of the components therefor except the "polyoxyethyleneglycol dimercaptoalkylester" reducing agent and intermixing the polyoxyethyleneglycol dimercaptoalkylester reducing agent with the previously prepared additives immediately prior to applying the permanent waving lotion to the head of hair to be permanently waved.

10. The process defined in claim 5, wherein said permanent waving lotion is further defined as comprising

c. at least one reducing booster selected from the group consisting of ammonium thioglycolate, ammonium thiolactate, glycerol monothioglycolate, glycerol monothiolactate, cysteamine, and cysteine.

11. The process defined in claim 10, wherein said reducing booster is further defined as comprising between about 1% and 6% by weight of the permanent waving lotion.

12. A hair reducing or permanent waving lotion for use in the permanent waving of hair, said lotion comprising

A. between about 5% and 40% by weight of the total composition of a reducing agent comprising at least one polyoxyethyleneglycol dimercaptoalkyl-ester having the formula