Multibranched acid terminated oligomers of itaconic acid including vinylidine unsaturations
AssigneeItaconix Corporation
InventorsYvon Durant, Madeleine Anderson, John Shaw
Life of this patent
Estimating the term…
Abstract
The present invention is directed at multibranched acid terminated oligomers of itaconic acid. Such multibranched acid terminated oligomers also contain six or more vinylidine groups providing unsaturations that can then be relied upon for subsequent Michael nucleophilic addition type reactions. The subject oligomers have particular use for treatment of damaged hair or skin.
Claims16
A composition comprising a multibranched acid terminated oligomer including 6 or more vinylidene groups, derived from itaconic acid, a hydroxy terminated polyol and a multifunctional hydroxy compound, wherein said oligomer is characterized by:
- (a) a maximum weight average molecular weight (Mw) of 30,000 g/mole;
- (b) a maximum number average molecular weight (Mn) of 10,000 g/mole;
- (c) an acid value of 100 mg KOH/gram to 250 mg KOH/gram;
- and (d) a hydroxyl value of less than or equal to 35 mg KOH/gram;
- wherein said multibranched acid terminated oligomer including 6 or more vinylidene groups comprises the following structure:
- wherein R is selected from an alkyl group having 2-3 carbon atoms and n has a value in the range of 2-20.
A method of forming a multibranched acid terminated oligomer including 6 or more vinylidene groups comprising reacting itaconic acid, a hydroxy terminated polyol and a multifunctional hydroxy compound, in the presence of a free-radical inhibitor, wherein itaconic acid is present in molar excess to said hydroxy terminated polyol and said multifunctional hydroxy compound and forming said multibranched acid terminated oligomer including six or more vinylidene groups, wherein said oligomer is characterized by:
- (a) a maximum weight average molecular weight (Mw) of 30,000 g/mole;
- (b) a maximum number average molecular weight (Mn) of 10,000 g/mole;
- (c) an acid value of 100 mg KOH/gram to 250 mg KOH/gram;
- and (d) a hydroxyl value of less than or equal to 35 mg KOH/gram.
A method of treating hair comprising:
- (1) supplying a multibranched acid terminated oligomer including 6 or more vinylidene groups, derived from itaconic acid, a hydroxy terminated polyol and a multifunctional hydroxy compound, wherein said oligomer is characterized by:
- (a) a maximum weight average molecular weight (Mw) of 30,000 g/mole;
- (b) a maximum number average molecular weight (Mn) of 10,000 g/mole;
- (c) an acid value of 100 mg KOH/gram to 250 mg KOH/gram;
- and (d) a hydroxyl value of less than or equal to 35 mg KOH/gram;
- and
- (2) treating hair with said multibranched acid terminated oligomer including 6 or more vinylidene groups.
A method of treating skin comprising:
- (1) supplying a multibranched acid terminated oligomer including 6 or more vinylidene groups, derived from itaconic acid, a hydroxy terminated polyol and a multifunctional hydroxy compound, wherein said oligomer is characterized by:
- (a) a maximum weight average molecular weight (Mw) of 30,000 g/mole;
- (b) a maximum number average molecular weight (Mn) of 10,000 g/mole;
- (c) an acid value of 100 mg KOH/gram to 250 mg KOH/gram;
- and (d) a hydroxyl value of less than or equal to 35 mg KOH/gram;
- and
- (2) treating skin with said multibranched acid terminated oligomer including 6 or more vinylidene groups.
A composition comprising a multibranched acid terminated oligomer including 6 or more vinylidene groups, derived from itaconic acid, a hydroxy terminated polyol and a multifunctional hydroxy compound, wherein said oligomer is characterized by:
- (a) a maximum weight average molecular weight (Mw) of 30,000 g/mole;
- (b) a maximum number average molecular weight (Mn) of 10,000 g/mole;
- (c) an acid value of 100 mg KOH/gram to 250 mg KOH/gram;
- and (d) a hydroxyl value of less than or equal to 35 mg KOH/gram;
- wherein said multibranched acid terminated oligomer including 6 or more vinylidene groups comprises the following structure:
- wherein R is selected from an alkyl group having 2-3 carbon atoms and n has a value in the range of 2-20.
A composition comprising a multibranched acid terminated oligomer including 6 or more vinylidene groups, derived from itaconic acid, a hydroxy terminated polyol and a multifunctional hydroxy compound, wherein said oligomer is characterized by:
- (a) a maximum weight average molecular weight (Mw) of 30,000 g/mole;
- (b) a maximum number average molecular weight (Mn) of 10,000 g/mole;
- (c) an acid value of 100 mg KOH/gram to 250 mg KOH/gram;
- and (d) a hydroxyl value of less than or equal to 35 mg KOH/gram;
- wherein said multibranched acid terminated oligomer including six or more vinylidene groups comprises the following structure:
- wherein R is selected from an alkyl group having 2-3 carbon atoms and n has a value in the range of 2-20.
Dependencies are inferred from the claim text.