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Multifunctional Polyurethane For Personal Care, Home Care, Health Care and Institutional Care Formulations

IP.com Disclosure Number: IPCOM000250252D
Publication Date: 2017-Jun-19

Publishing Venue

The IP.com Prior Art Database

Related People

Mana Tamami, PhD; Laure Dupin; Angel Suarez; Christopher Belock; Hossein Birjandi Nejad, PhD; Lindsay Lipp; Denise Rafferty, PhD; Marie Ollagnier; Bryan Moran; Laurent Blasco, PhD; Mark Paczkowski, PhD: AUTHOR

Abstract

A new oil soluble polymer (INCI: Polyurethane-79) from Lubrizol is an innovative rheology modifier. It creates thickening with clarity and suspension in a broad spectrum of oils and oil mixtures such as natural oils/triglycerides, synthetic esters, and liquid UV filters. When used in anhydrous systems, it can improve sensory attributes by reducing the greasy after-feel and creating a tack-free film. This rheology modifier is very efficient in medium and high polarity oils (the recommended use level is 0.1 – 2.0 wt%, for specific applications, it can be up to 40 wt% use level). While the polymer is compatible with a wide range of oils and emollients, the exact polymer use level needed depends on the oil/emollient chosen, the properties desired, and the presence of other ingredients in the formulation.

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ABSTRACT

A new oil soluble polymer (INCI: Polyurethane-79) from Lubrizol is an innovative rheology modifier. It creates thickening with clarity and suspension in a broad spectrum of oils and oil mixtures such as natural oils/triglycerides, synthetic esters, and liquid UV filters. When used in anhydrous systems, it can improve sensory attributes by reducing the greasy after-feel and creating a tack-free film. This rheology modifier is very efficient in medium and high polarity oils (the recommended use level is 0.1 – 2.0 wt%, for specific applications, it can be up to 40 wt% use level). While the polymer is compatible with a wide range of oils and emollients, the exact polymer use level needed depends on the oil/emollient chosen, the properties desired, and the presence of other ingredients in the formulation.

INTRODUCTION & BACKGROUND

Polyurethane-79 from Lubrizol is an oil soluble, high molecular weight, hydrophobically modified polyurethane prepared by reacting a hydrogenated polyolefin diol, a linear aliphatic diisocyanate, a linear diol chain extender, and a hydrogenated dimerized fatty alcohol. The polyurethane is then end-capped with a fatty alcohol (Figure 1).

Figure 1. Polyurethane-79 general structure We postulate that upon polymer incorporation in oil, polymer-polymer associations and polymer- oil interactions promote thickening and eventually gelation. Detailed investigation of such interactions is beyond the scope of this report and remains subject of future work. Since the polymer interacts with the oil, there will be differences in thickening efficiency and texture for oils having various polarities and chemical structures. However, the thickener has been optimized to produce the most consistent results across a wide range of oil types.

APPLICATIONS

Polyurethane-79 can be used in various types of personal care, home care, health care, and institutional care formulations and/or products. The term “personal care” as used herein includes, without limitation, cosmetics, toiletries, cosmeceuticals, beauty aids, personal hygiene and cleansing formulations and products that are applied to the skin, lip, hair, scalp, and nails of humans and animals. The term “health care” as used herein includes, without limitation,

pharmaceuticals; including dermal topical or transdermal applications, dermocosmetics, oral care products (mouth, teeth), eye care products, ear care products and over-the-counter products and appliances, such as patches, plasters, dressings, and the like. The term “home care” as used herein includes, without limitation, formulations and products utilized in a household for surface protection and/or cleaning including biocidal cleaning products for maintaining sanitary conditions in the kitchen and bathroom, and laundry products for fabric cleaning and the like, degreasers, and fragrance gels. The term “institutional care" as used herein includes, without limitation, formulations and products employed for protection and/or c...