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US 7,115,683 B2Granted
Organic-inorganic nanocomposite and preparation thereof
AssigneeLG Chem, Ltd.
InventorsHee-Jung Kim, Dong-Ryul Kim
Life of this patent
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Abstract
The present invention relates to an organic-inorganic nanocomposite and preparation thereof and particularly to a method for preparing an organic-inorganic nanocomposite capable of uniformly dispersing a silicate compound in a polymer medium by adding monomers, an initiator, and an emulsifier to an ion-exchanged layered silicate salt that is prepared by adding a cationic initiator and a cationic chain transfer agent to a layered silicate compound to cause polymerization.
Claims18
An organic-inorganic nanocomposite composition, comprising:
- a) a layered silicate salt, wherein
- i) a cationic initiator and
- ii) a cationic chain transfer agent are ion-exchanged in a layered silicate compound;
- and
- b) a polymer medium;
- wherein the a) ii) cationic chain transfer agent is able to lead to living radical polymerization, represented by Chemical Formula 3:
- (In the Chemical Formula 3,
- Z is a hydrogen, a chlorine, an alkyl, an alkylthio, an alkoxycarbonyl, an aryoxycarbonyl (—COOR″), an carboxy (—COOH), an acyloxy (—O2CR″), a cabamoyl (—CONR″), a cyano (—CN), a dialkyl-phosphonato, a diaryl-phosphonato (—P(═O)OR″2), a dialkyl-phosphinato, a diaryl-phosphinato (—P(═O)R″2) which contains or does not contain substitutents,
- R″ is C1-18 alkyl, C18 alkenyl, aryl, heterocyclyl, aralkyl, or alkylaryl which contains or does not contain substitutents selected from the group of epoxy, alkoxycarbonyl, aryloxycarbonyl, isocyanto, cyano, silyl, haloyl, and dialkylamino,
- R1 is C1-18 alkyl, C2–18 alkenyl, aryl, heterocyclyl, aralkyl, or alkylaryl which contains or does not contain substitutents selected from the group of hydrogen, ester, keto, amide, ether, thio, hydroxy, cyano, silyl, haloyl, and dialkylamino, and
- R2 and R3 are independently C1-18 alkyl, C2-18 alkenyl, aryl, heterocyclyl, aralkyl, or alkylaryl which contains or does not contain substitutents are selected from the group of hydrogen, ester, keto, amide, ether, thio, hydroxy, cyano, silyl, haloyl, and dialkylamino, and at least one of R2 and R3 contains ammonium salt represented by Chemical Formula 4 or Chemical Formula 5 having a cationic substitutent at its end):
- (In the Chemical Formula 4:
- R4, R5, and R6 are independently an alkyl which contains branches, normal saturated or unsaturated alkyl which contain aryl substitutent, alkoxyalkyl, cyanoalkyl, or hydroxyalkyl,
- X is a halide or sulfate having a functional group capable of forming a salt or an anion),
- (In the Chemical Formula 5,
- The hetero ring is a ring compound having a 5,6-square shape, and can contain independently an alkyl or alkene,
- nitrogen can be 1 to 3,
- Q is a halide or a sulfate having a functional group capable of forming a salt or an anion).
15 more elements
A method for preparing an organic-inorganic nanocomposite composition comprising the steps of
- a) adding a cationic initiator and a cationic chain transfer agent to a layered silicate compound and causing an ion-exchange reaction to prepare an ion-exchanged layered silicate salt;
- and
- b) adding monomers, an initiator, and an emulsifier to the a) ion-exchanged layered silicate salt and causing polymerization.
An organic-inorganic nanocomposite composition, comprising:
- a) 1 to 150 weight parts of a layered silicate salt, wherein
- i) 1 to 100 moles of a cationic initiator and
- ii) 10 to 100 moles of a cationic chain transfer agent are ion-exchanged in 100 moles of a layered silicate compound;
- b) 100 weight parts of a polymer medium;
- c) 0.01 to 10 weight parts of an initiator;
- and
- d) 0.001 to 10 weight parts of an emulsifier.
4 more elements
An organic-inorganic nanocomposite composition, comprising:
- a) a layered silicate salt, wherein
- i) a cationic initiator and
- ii) a cationic chain transfer agent are ion-exchanged in a layered silicate compound;
- and
- b) a polymer medium;
- wherein the a) i) cationic initiator is represented by Chemical formula 1 or Chemical formula 2:
- (In the Chemical formula 1,
- A1 and A2 are independently a hydrogen, a C1-6 alkyl group, or cyano group,
- A3 and A4 are independently a hydrogen, alkyl, alkenyl, aryl, heteroaromatic, or heterocyclyl, which contains or does not contain substitutents selected from the group of ester, keto, ether, and amide, and at least one of A3 and A4 contains an ammonium salt represented by Chemical formula 4 or Chemical formula 5 having a cationic substituent at its end),
- T1O—O-T2 [Chemical Formula 2]
- (In the Chemical formula 2,
- T1 and T2 are independently an alkyl, alkenyl, aryl, heteroaromatic, or heterocyclyl which contains or does not contain substitutents selected from the group of ester, keto, ether, and amide, and at least on of T1 and T2 contains an ammonium salt represented by the Chemical formula 4 or the Chemical formula 5 having a cationic substituent at its end):
- (In the Chemical formula 4:
- R4, R5, and R6 are independently an alkyl which contains branches, normal saturated or unsaturated alkyl which contain aryl substitutent, alkoxyalkyl, cyanoalkyl, or hydroxyalkyl,
- X is a halide or sulfate having a functional group capable of forming a salt or an anion),
- (In the Chemical formula 5,
- The hetero ring is a ring compound having a 5,6-square shape, and can contain independently an alkyl or alkene,
- nitrogen can be 1 to 3,
- Q is a halide or a sulfate having a functional group capable of forming a salt or an anion).
16 more elements
Dependencies are inferred from the claim text.