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Terminally modified acrylic polymer and method for producing terminallly modified acrylic polymer

Inactive Publication Date: 2010-12-09
SEKISUI CHEM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0050]In accordance with the present invention, it is possible to provide a terminally modified acrylic polymer having excellent thermal decomposition properties at low temperatures, an inorganic fine particle dispersed paste composition obtained by using the terminally modified acrylic polymer and a method of producing of the terminally modified acrylic polymer.

Problems solved by technology

However, when considering a process in which inorganic fine particles are dispersed, a pattern is printed by screen printing, and degreasing and burning are performed to obtain an inorganic fine particle layer, since cellulose type resins have poor thermal decomposition properties, they have to be degreased at elevated temperatures and therefore they have problems that large energy is required in a production step or it takes much time to burn.
Furthermore, when a cellulose type resin is used as a binder resin of a paste in which glass frits are dispersed, there is a problem that a carbon derived from a resin remains in a sintered body since in the step of sintering glass frits, sintering of the glass frit starts before the resin is decomposed and removed.
However, even in such a case, when low melting point glasses having a softening point of 400° C. or lower or inorganic fine particles such as conductive fine particles of copper or silver, which are prone to being oxidized by sintering, are used, decomposition at lower temperatures is required.

Method used

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  • Terminally modified acrylic polymer and method for producing terminallly modified acrylic polymer
  • Terminally modified acrylic polymer and method for producing terminallly modified acrylic polymer
  • Terminally modified acrylic polymer and method for producing terminallly modified acrylic polymer

Examples

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example 1

(Production of Acrylic Polymer)

[0052]30 mol of methyl methacrylate (manufactured by Wako Pure Chemical Industries, Ltd.) as a monomer was added to 1 mol of an organic bismuth compound CH3C(CH3)(Bi(CH3)2)COOCH3 as a living radical polymerization initiator, and then, the resulting mixture was heated to 100° C. while stirring the mixture with a stirrer and maintained at this temperature for 3 hours. After the completion of a reaction, the reaction solution was dissolved in 15 mL of α,α,α-trifluorotoluene. To the resulting solution, 0.2 g of 2,2,6,6-tetramethylpiperidine 1-oxyl (TEMPO manufactured by Aldrich Chemical Co.) was further added and the resulting mixture was reacted at 80° C. for 1 hour. After the completion of a reaction, the resulting solution was charged into 250 mL of hexane (manufactured by Wako Pure Chemical Industries, Ltd.) being stirred. Thereafter, a precipitated polymer was filtered under suction and dried to obtain a terminally modified acrylic polymer (conversion...

example 2

(Production of Acrylic Polymer)

[0056]30 mol of isobutyl methacrylate (manufactured by Wako Pure Chemical Industries, Ltd.) as a monomer was added to 1 mol of an organic bismuth compound CH3C(CH3)(Bi(CH3)2)COOCH3 as a living radical polymerization initiator, and then, the resulting mixture was heated to 100° C. while stirring the mixture with a stirrer and maintained at this temperature for 3 hours. After the completion of a reaction, the reaction solution was dissolved in 15 mL of α,α,α-trifluorotoluene. To the resulting solution, 0.2 g of 2,2,6,6-tetramethylpiperidine 1-oxyl (TEMPO manufactured by Aldrich Chemical Co.) was further added and the resulting mixture was reacted at 80° C. for 1 hour. After the completion of a reaction, the resulting solution was charged into 250 mL of hexane (manufactured by Wako Pure Chemical Industries, Ltd.) being stirred. Thereafter, a precipitated polymer was filtered under suction and dried to obtain a terminally modified acrylic polymer (conversi...

example 3

(Production of Acrylic Polymer)

[0059]A mixture solution of 15 mol of isobutyl methacrylate (manufactured by Wako Pure Chemical Industries, Ltd.) and 15 mol of isobutyl methacrylate (manufactured by Wako Pure Chemical Industries, Ltd.) as a monomer was added to 1 mol of an organic bismuth compound CH3C(CH3)(Bi(CH3)2)COOCH3 as a living radical polymerization initiator, and then, the resulting mixture was heated to 100° C. while stirring the mixture with a stirrer and maintained at this temperature for 3 hours. After the completion of a reaction, the reaction solution was dissolved in 15 mL of α,α,α-trifluorotoluene. To the resulting solution, 0.2 g of 2,2,6,6-tetramethylpiperidine 1-oxyl (TEMPO manufactured by Aldrich Chemical Co.) was further added and the resulting mixture was reacted at 80° C. for 1 hour. After the completion of a reaction, the resulting solution was charged into 250 mL of hexane (manufactured by Wako Pure Chemical Industries, Ltd.) being stirred. Thereafter, a pre...

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Abstract

The present invention provides a terminally modified acrylic polymer having excellent thermal decomposition properties at low temperatures, an inorganic fine particle dispersed paste composition obtained by using the terminally modified acrylic polymer and a method of producing of the terminally modified acrylic polymer.The present invention pertains to a terminally modified acrylic polymer, which comprises a main chain composed of a repeating unit represented by the following formula (1), and a group represented by the following formula (2) at both ends or one end of the main chain,wherein R1 represents hydrogen atom, an organic group having 1 or more carbon atoms or a derivative of an organic group having 1 or more carbon atoms; R2 represents an organic group having 1 or more carbon atoms or a derivative of an organic group having 1 or more carbon atoms; R3 and R4 each represents hydrogen atom, an organic group having 1 or more carbon atoms or a derivative of an organic group having 1 or more carbon atoms; and n represents a positive integer.

Description

TECHNICAL FIELD[0001]The present invention relates to a terminally modified acrylic polymer having excellent thermal decomposition properties at low temperatures, an inorganic fine particle dispersed paste composition obtained by using the terminally modified acrylic polymer and a method of producing of the terminally modified acrylic polymer.BACKGROUND ART[0002]In recent years, paste compositions formed by dispersing inorganic fine particles such as conductive powder, ceramic powder and the like in a binder resin are employed in order to obtain sintered bodies having various shapes. Particularly, a paste composition formed by dispersing a phosphor as fine particles in a resin binder is used, for example, in plasma displays (PDP), field emission displays (FED, SED), and the like, and in recent years, its demand is being increased. Also in the case of a paste composition formed by dispersing glass frits in a resin binder, a resin for a lead-free frit glass, which does not impair conv...

Claims

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Application Information

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IPC IPC(8): C03C8/14C08F120/18C08L33/10C09K11/02C08K3/08C08K3/22
CPCC08F120/14C08F120/18C08F290/06C08F290/061C08F2438/00C08F2438/02C08K3/10C08F2810/30C08F2810/40C08F8/00C08F8/50C08F20/12C08L33/12
Inventor YAMAGO, SHIGERUFUKUI, HIROJI
Owner SEKISUI CHEM CO LTD
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