Method for producing polymer, composition for radical polymerization, and radical polymerization inhibitor
AssigneeKuraray Co., Ltd.
InventorsTakumi TAKAYAMA, Hinako TSUCHIYA, Kazuhiko MAEKAWA
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Abstract
A method of producing a polymer including a polymerization step of obtaining a polymer by controlled radical polymerization of a monomer (Y) in the presence of an organic compound (A) represented by formula (I) and its constituents and a radical generator (B), where a molar ratio (B/A) of (B) to (A) is from 0.5 to 20. The production method allows synthesis of a highly safe polymer with a high molecular weight while precisely controlling the molecular sequence and the end structure. In addition, the production method is low in toxicity, environmentally friendly, and operated at low costs.
Claims15
A method of producing a polymer, comprising obtaining a polymer by controlled radical polymerization of a monomer (Y) in the presence of an organic compound (A) represented by a formula (I) below and a radical generator (B), wherein
- a molar ratio (B/A) of (B) to (A) is from 0.5 to 20,
- wherein in the formula (I), R1 denotes an alkenyl group or an aryl group, R2 denotes a group represented by a formula (II) or a formula (III) below, and R1 and R2 optionally form a ring by coupling with each other;
- wherein in the formula (II), R3 denotes a hydrogen atom, a halogen atom, an alkyl group, an aryl group, an alkenyl group, an alkoxy group, an amino group, a nitro group, a cyano group, an acetyl group, a trifluoromethyl group, or a hydroxyl group, and * denotes a bond;
- wherein in the formula (III), R3 is the same as that in the formula (II) above and * denotes a bond.
A composition, comprising:
- an organic compound (A) represented by a formula (I) below;
- and a radical generator (B), wherein
- a molar ratio (B/A) of (B) to (A) is from 0.5 to 20.
- wherein in the formula (I), R1 denotes an alkenyl group or an aryl group, R2 denotes a group represented by a formula (II) or a formula (III) below, and R1 and R2 optionally form a ring by coupling with each other;
- wherein in the formula (II), R3 denotes a hydrogen atom, a halogen atom, an alkyl group, an aryl group, an alkenyl group, an alkoxy group, an amino group, a nitro group, a cyano group, an acetyl group, a trifluoromethyl group, or a hydroxyl group, and * denotes a bond;
- wherein in the formula (III), R3 is the same as that in the formula (II) above and * denotes a bond.
A radical polymerization control agent, comprising an organic compound (A) represented by a formula (I) below.
- wherein in the formula (I), R1 denotes an alkenyl group or an aryl group, R2 denotes a group represented by a formula (II) or a formula (III) below, and R1 and R2 optionally form a ring by coupling with each other;
- wherein in the formula (II) R3 denotes a hydrogen atom, a halogen atom, an alkyl group, an aryl group, an alkenyl group, an alkoxy group, an amino group, a nitro group, a cyano group, an acetyl group, a trifluoromethyl group, or a hydroxyl group, and * denotes a bond;
- wherein in the formula (III), R3 is the same as that in the formula (II) above and * denotes a bond.
A polymer, comprising an end structure represented by a formula (V) or a formula (VI) below:
- wherein in the formula (V), R1 denotes an alkenyl group or an aryl group, R2 denotes a group represented by a formula (II) or a formula (III) below, and R1 and R2 optionally form a ring by coupling with each other, and * denotes a bond;
- wherein in the formula (VI) R1 and R2 are the same as those in the formula (V) above and * denotes a bond;
- wherein in the formula (II), R3 denotes a hydrogen atom, a halogen atom, an alkyl group, an aryl group, an alkenyl group, an alkoxy group, an amino group, a nitro group, a cyano group, an acetyl group, a trifluoromethyl group, or a hydroxyl group, and * denotes a bond;
- wherein in the formula (III), R3 is the same as that in the formula (II) above and * denotes a bond.
Dependencies are inferred from the claim text.