Gelling agent, method for producing gelling agent, and cosmetic

A gelling agent comprising a water-swellable clay mineral in which ammonium group-modified organopolysiloxane represented by the following average composition formula (1) is incorporated in an interlayer space,

• (R31SiO1/2)a1(Rn2R3-n1SiO1/2)a2(R21SiO2/2)b(R1SiO3/2)c(SiO4/2)d (1)
• in the formula (1), R1 independently represents a group selected from an alkyl group having 1 to 10 carbon atoms, an aryl group having 6 to 10 carbon atoms, and an arylene group having 7 to 10 carbon atoms,
• R2 represents an ammonium group represented by the following formula (2),
• “a1” satisfies 0<a1≤20, “a2” satisfies 0<a2≤12, “b” satisfies 0≤b≤150, “c” satisfies 0≤c≤10, and “d” satisfies 0≤d≤5, provided that a1+a2+b+c+d is 2 to 170;
• and “n” represents an integer of 1 to 3,
• in the formula (2), R3 independently represents a hydrogen atom or a group selected from an alkyl group having 1 to 20 carbon atoms, an aryl group having 6 to 10 carbon atoms, and an arylene group having 7 to 10 carbon atoms,
• Y represents a group represented by any of following formulae (3), and
• A represents an anion that is a counterion to an ammonium ion,
• wherein “p” represents an integer of 1≤p≤10;
• “p1” satisfies 1≤p1≤10 and “p2” represents an integer of 1≤p2≤10, provided 1≤p1+p2≤15;
• “p3” represents an integer of 1≤p3≤10;
• “p4” represents an integer of 1≤p4≤12;
• and “p5” represents an integer of 1≤p5≤10, and
• R4 represents a hydrogen atom or a group selected from an alkyl group having 1 to 20 carbon atoms, an aryl group having 6 to 10 carbon atoms, and an arylene group having 7 to 10 carbon atoms.

A method for producing a gelling agent, comprising a step of:

• treating a water-swellable clay mineral with ammonium group-modified organopolysiloxane represented by the following average composition formula (1),
• (R31SiO1/2)a1(Rn2R3-n1SiO1/2)a2(R21SiO2/2)b(R1SiO3/2)c(SiO4/2)d (1)
• in the formula (1), R1 independently represents a group selected from an alkyl group having 1 to 10 carbon atoms, an aryl group having 6 to 10 carbon atoms, and an arylene group having 7 to 10 carbon atoms,
• R2 represents an ammonium group represented by the following formula (2),
• “a1” satisfies 0<a1≤20, “a2” satisfies 0<a2≤12, “b” satisfies 0≤b≤150, “c” satisfies 0<c<10, and “d” satisfies 0<d<5, provided that a1+a2+b+c+d is 2 to 170;
• and “n” represents an integer of 1 to 3,
• in the formula (2), R3 independently represents a hydrogen atom or a group selected from an alkyl group having 1 to 20 carbon atoms, an aryl group having 6 to 10 carbon atoms, and an arylene group having 7 to 10 carbon atoms,
• Y represents a group represented by any of following formulae (3), and
• A− represents an anion that is a counterion to an ammonium ion,
• wherein “p” represents an integer of 1≤p≤10;
• “p1” satisfies 1≤p1≤10 and “p2” represents an integer of 1≤p2≤10, provided 1≤p1+p2≤15;
• “p3” represents an integer of 1≤p3≤10;
• “p4” represents an integer of 1≤p4≤12;
• and “p5” represents an integer of 1≤p5≤10, and
• R4 represents a hydrogen atom or a group selected from an alkyl group having 1 to 20 carbon atoms, an aryl group having 6 to 10 carbon atoms, and an arylene group having 7 to 10 carbon atoms.