Neutralization of phosphate esters, compositions based upon and methods using same
AssigneeWalter Merton Co., Inc.
InventorArnold W. Fogel
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Abstract
The present invention relates to synthetic, novel, preferably fatty phosphoric acid esters which, when neutralized with a neutralizing agent, is revealed as a new surface active agent. Formulations are presented which demonstrate a method for using the disclosed surface active agent to prepare stable oil-in-water, water-in-oil emulsions and various solutions of varying polarity and viscosity for use in a variety of dermatological applications, and/or wherever emulsions or solutions according to the present invention may be used.
Claims15
A composition comprising:
- an oil phase and a water phase, said oil phase comprising about 10% to about 90% by weight of said composition and said water phase comprising about 10% to about 90% by weight of said composition, said oil phase comprising about 70% to about 99.75% by weight of an oil and about 0.25% to about 30% by weight of a phosphoric acid ester compound according to the structure:
- where R1 and R2 are H or a linear, cyclic or branch chained saturated or unsaturated C8-C40 hydrocarbon group, a —(R3—O)m—R4 group, a —R5—O—(R3—O)m—R4 group or a
- group,
- where R3 is a C2-C6 alkylene group or a mixture of ethylene and propylene groups, R4 is H or a linear, cyclic or branch chained saturated or unsaturated C8-C40 group, a
- group or a
- group, R5 is a C2-C18 alkylene group, R6 is a linear, cyclic or branch chained saturated or unsaturated C8-C40 hydrocarbon group and m is an integer from 0 to 150, R7 is H or a linear, cyclic or branch-chained saturated or unsaturated C1-C22 hydrocarbon group or a C1-C22 alcohol group and R8 is a C1-C22 linear, cyclic or branched chain saturated or unsaturated hydrocarbon group, with the proviso that when R1 is H, R2 cannot also be H;
- and X is Na2B4O7, said composition being free from diethanolamine cetyl phosphate.
An emulsion composition comprising:
- 1) about 0.5% to about 15% by weight of the reaction product of a phosphoric acid ester compound of the formula:
- where R1 and R2 are H or a linear, cyclic or branch chained saturated or unsaturated C3-C40 hydrocarbon group, a —(R3—O)m—R4 group, a —R5—(R8—O)m—R4 group or a
- group,
- where R3 is a C2-C6 alkylene group or a mixture of ethylene and propylene groups, R4 is H or a linear, cyclic or branch chained saturated or unsaturated C8-C40 group, a
- group or a
- group, R5 is a C2-C18 alkylene group, R6 is a linear, cyclic or branch chained saturated or unsaturated C8-C40 hydrocarbon group and m is an integer from 0 to 150, R7 is H or a linear, cyclic or branch-chained saturated or unsaturated C1-C22 hydrocarbon group or a C1-C22 alcohol group and R8 is a C1-C22 linear, cylic or branched chain saturated or unsaturated hydrocarbon group, with the proviso that when R1 is H, R2 cannot also be H;
- and an amount of an active boron salt neutralizing agent effective to neutralize said phosphoric acid ester compound;
- 2) about 15% to about 89.5% by weight of an oil;
- 3) optionally, from 0.1% to about 20% by weight of a secondary emulsifier;
- and
- 4) about 10% to about 75% water, said composition being free from diethanolamine cetyl phosphate.
A composition comprsing:
- an emulsion, said emulsion being formed by mixing an oil phase and a water phase, said oil phase comprising about 10% to about 90% by weight of said composition and said water phase comprising about 10% to about 90% by weight of said composition, said oil phase comprising at least about 70% to about 99.75% by weight of an oil;
- and about 0.25% to about 30% by weight of a phosphoric acid ester compound of the formula:
- where R1 and R2 are H or a linear, cyclic or branch chained saturated or unsaturated C8-C40 hydrocarbon group, a —(R3—O)m—R4 group, a —R5—O—(R3—O)m—R4 group or a
- group,
- where R3 is a C2-C6 alkylene group, preferably an ethylene group, a propylene group or a mixture of ethylene and propylene groups, R4 is H or a linear, cyclic or branch chained saturated or unsaturated C8-C40 group, a
- group or a
- group, R5 is a C2-C18 alkylene group, R6 is a linear, cyclic or branch chained saturated or unsaturated C8-C40 hydrocarbon group and m is an integer from 0 to 150, R7 is H or a linear, cyclic or branch-chained saturated or unsaturated C1-C22 hydrocarbon group or a C1-C22 alcohol group and R8 is a C1-C22 linear, cylic or branched chain saturated or unsaturated hydrocarbon group, with the proviso that when R1 is H, R2 cannot also be H;
- and an amount of an active boron salt neutralizing compound effective to produce an emulsion when said oil phase and said water phase are mixed, said composition being free from diethanolamine cetyl phosphate.
Dependencies are inferred from the claim text.