Title:
NEAR-INFRARED-ABSORBING TRANSPARENT RESIN COMPOSITION AND MOLDED PRODUCT THEREOF
Document Type and Number:
Japanese Patent JP3279415
Kind Code:
B2
Abstract:
PURPOSE: To obtain a resin composition excellent in an ability to absorb near-infrared rays by mixing a transparent resin with lead sulfide, a specified thiourea derivative and an amide derivative and to obtain a near-infrared-absorbing transparent sheet or film by molding this composition.
CONSTITUTION: 100 pts. wt. transparent resin (A) is mixed with 0.01-5 pts.wt. lead sulfide (B). Components A and B are mixed with 0.001-1 pt.wt. thiourea derivative (C) represented by formula I (wherein R1 to R3 are each H, alkyl or aryl or they may be suitably combined with each other to form a ring) or 0.001-1 pt.wt. amide derivative (D) represented by formula II (wherein R4 and R5 are each H, alkyl, aryl or the like, and they may be suitably combined with each other to form a ring). As component A, a transparent resin such as a polycarbonate resin, a styrene resin or a vinyl chloride resin is used. As component B, lead sulfide having a mean particle diameter of 2μm or below and having a content of particles with a particle diameter of 20μm or above of 0 is desirable. It is effective to add a dispersing agent for lead sulfide such as sorbitan monostearate. According to this recipe, a near-infrared- absorbent showing absorptions uniformly over the near-infrared region of 800-2000nm, less colored and having excellent durability can be obtained.
Inventors:
Yuji Miyake
Sakae Takahashi
Sakae Takahashi
Application Number:
JP32704693A
Publication Date:
April 30, 2002
Filing Date:
December 24, 1993
Export Citation:
Assignee:
Daicel Chemical Industry Co., Ltd.
International Classes:
G03C1/76; B29D7/00; B32B7/02; C01G21/21; C07C233/02; C07C335/04; C08J5/18; C08K3/28; C08K3/30; C08K5/3412; C08K5/405; C08L101/00; B29K105/32; (IPC1-7): C08L101/00; C08J5/18; C08K3/30; C08K5/3412; C08K5/405
Domestic Patent References:
| JP5163400A | ||||
| JP363169A | ||||
| JP280486A |
Attorney, Agent or Firm:
Kaoru Furuya (3 outside)