Derivatives of 1,3-propanediol

A process which can be used to prepare a biobased emulsifying agent which is effective in formulating an oil-in-water emulsion or a water-in-oil emulsion which contains ingredients that have hygienic and/or beautifying properties such that one or more of the ingredients are effective for use in creams, moisturizers, shampoos, hair conditioners body care lotions, including facial and hand-care formulations, sunscreens, make-up removers, and liquid soaps, wherein said emulsifying agent (A) is present in an amount at least effective to form the emulsion and maintain its stability for more than one year, said emulsifying agent (B) has an HLB of about 1 to about 20, said emulsifying agent comprising at least one fatty acid ester in which the source of the acid residue of the ester is a fatty acid having a chain length of about 2 to about 40 carbon atoms (hereafter “a fatty acid”) and the source of the alcohol residue of the ester is one or more of (A) poly(1,3-propanediol)polymer;

• (B) 1,3-propandiol glycerol;
• (C) poly(1,3-propanediol glycerol)copolymer;
• or (D) (1,3-propandiol capped glycerol, where the emulsifying agent includes a mixture of fatty acid esters comprising an ester which has an HLB of less than about 8 and an ester which has an HLB of about 8 to about 13, said esters being present in an amount effective to impart to the emulsions a viscosity within the range of about 2000 cp to about 300.000 cp or about 10.000 cp to about 200.000 cp.

A fatty acid ester in which the source of the acid residue of the ester is a fatty acid having a chain length of about 2 to about 40 carbon atoms (hereafter a fatty acid) and the source of the alcohol residue of the ester is one or more of

• (A) Poly(1,3)-propanediol) polymer;
• (B) 1,3-propanediol glycerol;
• (C) Poly(1,3-propanediolglycerolcopolymer;
• or
• (D) 1,3-propanediol capped glycerol.