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Titanium dioxide

A titanium dioxide, colored technology, applied in the field of colored compositions, which can solve the problems of reducing solar reflectivity, whitening of coatings, time-consuming and expensive

Active Publication Date: 2015-11-25
TIOXIDE EURO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] Although each provides solar reflectance, some disadvantages in using these currently available systems include: they provide a relatively pale color because high levels of conventional titanium dioxide are required to provide the desired level of solar reflectance; or more layers are time-consuming and expensive and can lead to colored spots or an uneven appearance of the coating which tends to whiten over time; and impurities contained in the system cause Absorbs, thereby reducing solar reflectivity

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1A

[0068] Example 1A. An experimental procedure was adopted to match the color to ral8007 (light brown). The goal is: L*=39.56, a*=12.20 and b*=18.01. Organic pigments PB60 (AlbionColoursBricoforBlue3GRP), PY154 (HighPerformanceColoursPY1540), and PR122 (HighPerformanceColoursPR1220), in which PB60 and PY154 are used in combination with titanium dioxide having an average particle size of 1.4 μm. Then, the system was compared with a system containing the combination of the present invention, which is a combination of organic pigments PY128 (Ciba8GNP), PR122 (High Performance ColoursPR1220) and PV23 (CibaCromophtal VioletGt) and titanium dioxide having an average particle size of 1.4 μm.

[0069] Tinter concentrates were prepared using acrylic resins, wetting and dispersing additives, solvents, and specific toners for each of specific pigments (PB60, PY154, PR122, PY128, PV23) . The amounts of the various components are shown in Table 1, and the toner concentrate was ground with ste...

Embodiment 1B

[0083] Example 1B: A PVC veneer was prepared in the color ral8007 (light brown) using titanium dioxide with an average particle size of 1.4 μm. By mixing 40 g of various pigments and 350 g of acetyl tributyl citrate, raw material solutions of PY128 (Ciba8GNP), PR122 (HighPerformanceColoursPR1220), and PV23 (CibaCromophtal VioletGt) were prepared.

[0084] Component

Gram per 100g resin

PVC resin

100

Stearic acid

0.5

Lankromark LZB320

2.5

DIMP

8.49

PV23 raw material solution

6.5

PR122 raw material solution

10.6

PY128 raw material solution

39.1

TiO 2

34.45

[0085] Table 5: PVC formulation

[0086] The PVC plaque was prepared as follows: a dry blend was prepared using a crypto-peerless mixer. Then, a J.R.Dare two-roll mill (140°C for the front roll and 135°C for the back roll) was used to manufacture PVC. Preheat the prepared PVC at 165℃ for 3 minutes, then at 15te / in 2 Press down for 2 minutes.

[0087] A UV / vis / NIR spectrometer with an integrating sphere and a ...

Embodiment 2

[0088] Example 2. The paint system uses titanium dioxide with an average particle size of 1.4μm and organic pigments PY180 (ClariantFastYellowHG), PR122 (HPCPR1220), PV23 (CibaCromophtalVioletGt), PB15:3 (HPCPB1530), PBlack32 (BASFPaliogenBlackL0086), PO71 (CibaIrgazinDCosmoPPray) invention system So that the colored paint matches the ral standards 6011, 7010, 7022 and 7034.

[0089] Toner concentrates were prepared using acrylic resins, wetting and dispersing additives, solvents, and specific toners for each specific pigment (PY180, PR122, PV23, PB15:3, PBlack32, PO71). The amounts of the various components are shown in Table 6, and the toner concentrate was ground with steel balls.

[0090]

[0091] Table 6: Composition of tinting paint concentrate

[0092] Then, the various required tinting paint concentrates in the specified amounts in Table 7 were extracted and vigorously mixed with the specified amount of another acrylic resin for 2 minutes, thereby preparing a colored resin ...

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Abstract

The present invention provides a colored solar reflective system comprising (1) a particulate material having a substantially rutile crystal habit and having an average particle size of between about 0.5 μm and about 2.0 μm and (2) an organic pigment having a maximum absorption coefficient of about 5,000 mm−1 or greater in the visible light region, a maximum scattering coefficient of about 500 mm−1 or less in the visible light region and an average absorption coefficient of about 50 mm−1 or less in the infrared region. The solar reflective system, which may be used in a coating composition or as a composition from which articles can be formed, exhibits a dark, intense color while also providing enhanced total solar reflectance.

Description

Technical field [0001] The present invention generally relates to an improved colored solar light reflection system, a colored composition containing the colored solar light reflection system, and various uses of such colored composition. Background of the invention [0002] New technologies are continuously being developed to improve energy efficiency. One such technique is to use infrared reflective pigments in coatings located on the exterior of buildings (or other objects). As far as people are concerned, about 50% of the energy emitted by the sun is near infrared radiation. When this near-infrared radiation is absorbed, it is physically converted into heat. The coating containing infrared reflective pigments works by reflecting off sunlight and blocking heat transfer, thereby reducing the heat load of the building. For example, white pigments such as titanium dioxide have been used in coatings to reflect most of the solar energy. Generally, for aesthetic reasons, it is d...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08K13/02C09D5/00C09D7/41C09D7/62
CPCC09D5/004C08K3/22C08K3/24C08K9/02C09D7/007C09D7/1225C09D7/1275C09D7/1283C09D11/50C09D7/41C09D7/62C09D7/68C09D7/69C09D7/40C08K13/02C09C1/3607C09D7/65C08K5/01C08K5/08C08K5/23C08K5/34C08K5/3415C08K5/3417C08K5/3437C08K5/357C08K2003/2241
Inventor J·L·爱德华兹K·劳里E·R·帕恩哈姆S·里德J·罗布R·L·汤金
Owner TIOXIDE EURO