INTERLAYER FILM FOR LAMINATED GLASS, LAMINATED GLASS, AND ZINC OXIDE FINE PARTICLE DISPERSION

• US 20110052922A1
• Filed: 03/31/2009
• Published: 03/03/2011
• Est. Priority Date: 03/31/2008
• Status: Abandoned Application

• Current Assignee: Sekisui Chemical Company Limited (Sekisui)
• Original Assignee: Sekisui Chemical Company Limited (Sekisui)
• Inventors: Fukatani, Juichi, Kitano, Hirofumi, II, Daizo
• Application Number:
  US12/935,072
• Publication Number:
  US 20110052922A1
• Time in Patent Office: Days
• US Class Current: 428/428
• CPC Class Codes: B32B 17/10605 Type of plasticiser
• CPC Class Codes: B32B 17/10633 Infrared radiation absorbing or reflecting agents
• CPC Class Codes: B32B 17/10761 containing vinyl acetal
• CPC Class Codes: B32B 2307/102 Insulating
• CPC Class Codes: B82Y 30/00 Nanotechnology for materials or surface science, e.g. nanocomposites
• CPC Class Codes: C01P 2002/50 Solid solutions
• CPC Class Codes: C01P 2002/52 containing elements as dopants
• CPC Class Codes: C01P 2002/54 one element only
• CPC Class Codes: C01P 2004/62 Submicrometer sized, i.e. from 0.1-1 micrometer
• CPC Class Codes: C01P 2004/64 Nanometer sized, i.e. from 1-100 nanometer
• CPC Class Codes: C01P 2004/84 one phase coated with the other
• CPC Class Codes: C09C 1/043 Zinc oxide

Abstract

It is an object of the present invention to provide an interlayer film for a laminated glass in which zinc oxide fine particles are excellently dispersed, a laminated glass, and a zinc oxide fine particle dispersion.

The present invention is an interlayer film for a laminated glass, which comprises: zinc oxide fine particles containing a trivalent metallic element and having a silicon compound adhered on a surface of the zinc oxide fine particles; a thermoplastic resin; a dispersant; and a plasticizer, the dispersant having a structure represented by the following general formula (1) and having a HLB value of 8 to 17:

• • wherein R¹ represents an alkyl group having 5 to 17 carbon atoms or an aryl group having 6 to 14 carbon atoms, R² represents an alkylene group having 2 to 5 carbon atoms, R³ represents a hydrogen atom or R⁴(OR⁵)_n—, wherein R⁴ represents an alkyl group having 5 to 17 carbon atoms or an aryl group having 6 to 14 carbon atoms, and R⁵ represents an alkylene group having 2 to 5 carbon atoms, and “n” is an integer of 1 or more.

Claims

1. An interlayer film for a laminated glass,

which comprises:

zinc oxide fine particles containing a trivalent metallic element and having a silicon compound adhered on a surface of the zinc oxide fine particles;

a thermoplastic resin;

a dispersant; and

a plasticizer,

said dispersant having a structure represented by the following general formula (1) and having a HLB value of 8 to 17;

2. The interlayer film for a laminated glass according to claim 1,

wherein R¹ is a 2-ethylhexyl group, a lauryl group, a tridecyl group, or an octylphenyl group.

3. The interlayer film for a laminated glass according to claim 1,

wherein the trivalent metallic element is gallium or aluminum.

4. The interlayer film for a laminated glass according to claim 1,

wherein the interlayer film comprises 1 to 50 parts by weight of the dispersant with respect to 100 parts by weight of the zinc oxide fine particles containing the trivalent metallic element.

5. The interlayer film for a laminated glass according to claim 1,

which further comprises a heat ray absorbent.

6. The interlayer film for a laminated glass according to claim 5,

wherein the heat ray absorbent is tin-doped indium oxide fine particles.

7. The interlayer film for a laminated glass according to claim 1,

wherein the interlayer film has a multi-layered structure obtained by laminating two or more resin layers,

the resin layers comprising a heat ray shielding layer,

the shielding layer containing:

the zinc oxide fine particles containing the trivalent metallic element;

the thermoplastic resin;

the dispersant having a structure represented by said general formula (1); and

the plasticizer.

8. A laminated glass,

which is obtained by using the interlayer film for a laminated glass according to claim 1.

9. A zinc oxide fine particle dispersion,

which comprises:

zinc oxide fine particles containing a trivalent metallic element and having a silicon compound adhered on a surface of the zinc oxide fine particles;

a dispersant; and

a plasticizer,

said dispersant having a structure represented by the following general formula (1) and having an HLB value of 8 to 17;

10. The zinc oxide fine particle dispersion according to claim 9,

wherein R¹ is a 2-ethylhexyl group, a lauryl group, a tridecyl group, or an octylphenyl group.

11. The zinc oxide fine particle dispersion according to claim 9,

wherein the trivalent metallic element is gallium, aluminum, or indium.

12. The zinc oxide fine particle dispersion according to claim 9,

wherein the dispersion comprises 1 to 50 parts by weight of the dispersant with respect to 100 parts by weight of the zinc oxide fine particles containing the trivalent metallic element.