IP Library Granted Patent US 7,855,247
Granted Patent B2
US 7,855,247 · App. 11/917,381 · Granted Dec 21, 2010

Particle dispersed resin composition and process for producing the same

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Quick Facts
Patent No.
US 7,855,247
App. No.
11/917,381
Granted
Dec 21, 2010
Kind
B2
Abstract

A particle dispersed resin composition ( 19 ) is a composition in which a particle dispersed solvent ( 17 ) with and in which functional particulate powder is mixed and dispersed is mixed with a heated and melted resin ( 16 ). The amount of the resin ( 16 ) is set at a capable amount thereof which the resin ( 16 ) impregnates.

Claims (23)

1. A particle dispersed resin composition, wherein

a particle dispersed solvent in which functional particulate powder is dispersed is mixed with a heated and melted resin,

an amount of the particle dispersed solvent is 50 g or larger per 1 kg of the resin and equal to or less than a maximum amount which the resin is capable of impregnating,

the functional particulate powder is dispersed in the resin without chemical bonding between the functional particulate powder and the resin, and

the resin is a styrene based resin or a polylactide resin.

2. The particle dispersed resin composition of claim 1 ,

wherein the solvent does not substantially allow the resin to be dissolved therein.

3. The particle dispersed resin composition of claim 1 ,

wherein the solvent is a glycol solvent or a glycol ether solvent.

4. A process for producing a particle dispersed resin composition containing a resin in which functional particulate powder is dispersed, the process comprising steps of:

mixing and dispersing the functional particulate powder with a solvent to obtain a particle dispersed solvent; and

then, mixing a heated and melted resin with the particle dispersed solvent, wherein:

an amount of the particle dispersed solvent is 50 g or larger per 1 kg of the resin and equal to or less than a maximum amount which the resin is capable of impregnating,

the functional particulate powder is dispersed in the resin without chemical bonding between the functional particulate powder and the resin, and

the resin is a styrene based resin or a polylactide resin.

5. The process of claim 4 ,

wherein the solvent does not substantially allow the resin to be dissolved therein.

6. The process of claim 4 ,

wherein the solvent is a glycol solvent or a glycol ether solvent.

7. The process of claim 4 ,

wherein the particle dispersed solvent is reduced in pressure by suction after being mixed with the heated and melted resin.

8. The process of claim 4 ,

wherein after the particle dispersed solvent is heated at a temperature substantially equal to a temperature of the heated and melted resin, the heated particle dispersed solvent is mixed with the heated and melted resin.

Assignments (2)
CHANGE OF NAME Recorded Nov 20, 2008
From: MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD.
To: PANASONIC CORPORATION
Reel/Frame 021897/0534 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Apr 1, 2008
From: YAMASHITA, TAKEHIKO; HISAZUMI, TAKAO
To: MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD.
Reel/Frame 020735/0608 →