Copolymer having carbosiloxane dendrimer structure and acidic group, composition containing same, and cosmetic

1. A method for producing a copolymer polymerized from a monomer composition, the method comprising:

(i) adding a polymerization initiator to the monomer composition and carrying out a polymerization reaction; and

(ii) contacting an obtained polymerization reaction product with a palladium catalyst to produce the copolymer;

wherein the monomer composition comprises:

(A) a carbosiloxane dendrimer monomer having a radically polymerizable organic group and represented by general formula (1):

where, Y denotes a radically polymerizable organic group, and R 1 denotes an alkyl group having from 1 to 10 carbon atoms or an aryl group, and X 1 denotes a silylalkyl group represented by the following general formula for a case in which i=1:

where, R 1 is the same as above, R 2 denotes an alkylene group having from 2 to 10 carbon atoms, R 3 denotes an alkyl group having from 1 to 10 carbon atoms, and X i+1 is a hydrogen atom or a group selected from the group consisting of an alkyl group having from 1 to 10 carbon atoms, an aryl group, and the silylalkyl group above; i is an integer of from 1 to 10, which indicates a generation of the silylalkyl group, and a i is an integer of from 0 to 3;

(B) an unsaturated monomer having at least one acidic group or a salt per molecule; and

(C) a monomer having at least one carboxylate per molecule;

wherein the weight of the monomer (A) in the monomer composition is greater than or equal to 30 wt. % relative to the weight of the monomer composition;

wherein a ratio (A/B) of the weight of the monomer (A) to the weight of the monomer (B) is from 1.0 to 20.0;

wherein a total weight of the monomer (A) and the monomer (B) is greater than or equal to 40 wt. % relative to the weight of the monomer composition; and

wherein the acidic group of the monomer (B) or salt thereof is a carboxylic acid or salt thereof.

2. The method according to claim 1 , wherein a total weight of the monomer (A) and the monomer (B) is greater than or equal to 50 wt. % relative to the weight of the monomer composition.

3. The method according to claim 2 , wherein the monomer (B) is selected from the group consisting of acrylic acid, methacrylic acid, and combinations thereof.

4. The method according to claim 3 , wherein the monomer (C) is selected from the group consisting of methyl methacrylate, n-butyl acrylate, 2-ethylhexyl methacrylate, isostearyl acrylate, stearyl acrylate, stearyl methacrylate, benzyl methacrylate, and combinations thereof.

5. The method according to claim 1 , wherein the palladium catalyst is a catalyst having palladium supported on activated carbon.

6. The method according to claim 1 , further defined as a method for producing a composition comprising a copolymer polymerized from a monomer composition, and wherein the method further comprises:

(iii) dissolving or dispersing the copolymer and at least one component selected from the group consisting of (D) an oil agent and (E) an alcohol to produce the composition.

7. The method according to claim 6 , wherein the composition further comprises (F) a surfactant.

8. The method according to claim 6 , wherein the composition further comprises at least one component selected from the group consisting of water, inorganic powders, organic powders, colorants, thickeners, gelling agents, organically modified clay minerals, silicone resins, silicone gums, silicone elastomers, organo-modified silicones, ultraviolet light blocking components, water-soluble polymers, organic resins, moisturizing agents, antiseptic agents, antioxidants, antimicrobial agents, perfumes, salts, pH adjusting agents, chelating agents, refreshing agents, anti-inflammatory agents, skin beautifying components, vitamins, amino acids, nucleic acids, hormones, inclusion compounds, antistatic agents, and combinations thereof.

9. The method according to claim 1 , wherein the weight of the monomer (A) in the monomer composition is greater than 40 and less than 60 wt. % relative to the weight of the monomer composition.

10. The method according to claim 9 , wherein the ratio (A/B) of the weight of the monomer (A) to the weight of the monomer (B) is from 2 to 12.

11. The method according to claim 10 , wherein a total weight of the monomer (A) and the monomer (B) is greater than or equal to 55 wt. % relative to the weight of the monomer composition.

12. A method for producing a copolymer polymerized from a monomer composition, the method comprising:

(i) adding a polymerization initiator to the monomer composition and carrying out a polymerization reaction; and

(ii) contacting an obtained polymerization reaction product with a palladium catalyst to produce the copolymer;

wherein the monomer composition comprises:

(A) a carbosiloxane dendrimer monomer having a radically polymerizable organic group and represented by general formula (1):

where, Y denotes a radically polymerizable organic group, and R 1 denotes an alkyl group having from 1 to 10 carbon atoms or aryl group, and X 1 denotes a silylalkyl group represented by the following general formula for a case in which i=1:

where, R 1 is the same as above, R 2 denotes an alkylene group having from 2 to 10 carbon atoms, R 3 denotes an alkyl group having from 1 to 10 carbon atoms, and X i+1 is a hydrogen atom or a group selected from the group consisting of an alkyl group having from 1 to 10 carbon atoms, an aryl group, and the abovementioned silylalkyl group; i is an integer of from 1 to 10, which indicates a generation of the silylalkyl group, and a i is an integer of from 0 to 3; and

(B) an unsaturated monomer having at least one acidic group or a salt per molecule;

wherein the weight of the monomer (A) in the monomer composition is greater than or equal to 30 wt. % relative to the weight of the monomer composition, and a ratio (A/B) of the weight of the monomer (A) to the weight of the monomer (B) is from 1.0 to 20.0.

13. The method according to claim 12 , wherein a total weight of the monomer (A) and the monomer (B) is greater than or equal to 40 wt. % relative to the weight of the monomer composition.

14. The method according to claim 12 , wherein the acidic group of the monomer (B) or salt thereof is a carboxylic acid or salt thereof.

15. The method according to claim 12 , wherein the monomer composition further comprises (C) a monomer having at least one carboxylate per molecule.

16. The method according to claim 12 , wherein the palladium catalyst is a catalyst having palladium supported on activated carbon.

17. The method according to claim 12 , further defined as a method for producing a composition comprising a copolymer polymerized from a monomer composition, and wherein the method further comprises:

(iii) dissolving or dispersing the copolymer and at least one component selected from the group consisting of (D) an oil agent and (E) an alcohol to produce the composition.

18. The method according to claim 12 , wherein the weight of the monomer (A) in the monomer composition is greater than 40 and less than 60 wt. % relative to the weight of the monomer composition.

19. The method according to claim 18 , wherein the ratio (A/B) of the weight of the monomer (A) to the weight of the monomer (B) is from 2 to 12.

20. The method according to claim 19 , wherein a total weight of the monomer (A) and the monomer (B) is greater than or equal to 55 wt. % relative to the weight of the monomer composition.