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Pigment composition with anti-warping property in plastics

A pigment composition and anti-warping technology, applied in the field of pigment compositions, can solve the problem of low anti-warping performance, and achieve the effect of improving anti-warping performance

Inactive Publication Date: 2013-04-03
CINIC CHEM SHANGHAI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, most of the technologies disclosed in the above-mentioned patents have the defect that the warpage resistance is not high enough.

Method used

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  • Pigment composition with anti-warping property in plastics
  • Pigment composition with anti-warping property in plastics
  • Pigment composition with anti-warping property in plastics

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Dry-mix 9.5g of Pigment Red 254 with 0.5g of the additive of the following structural formula (1-1), and use the mixture to color polyethylene boards to test the warpage of the polyethylene boards.

[0032]

[0033] (1-1)

[0034] The additive of formula (1-1) can be prepared by the method of US7417154.

[0035] Test method: Mix 600g of polyethylene pellets and 0.6g of the above pigment mixture evenly, disperse in a single-screw extruder at 200°C and granulate, then inject the masterbatch into a disc with a diameter of 15cm and a thickness of 2.5cm in an injection molding machine , the disc was kept warm in hot water at 90°C for 30 minutes, and placed at room temperature for 24 hours. The test was repeated 10 times, and the warpage height of 10 injection molded parts was measured and averaged.

[0036] The test results are as follows:

[0037] Example

[0038] The results show that polyethylene panels colored with the composition of the invention have sig...

Embodiment 2

[0040] Dry-mix 9.7g of Pigment Red 254 and 0.3g of the additives with the following structure evenly, and then use the mixture to color polyethylene boards, and test the warpage of polyethylene boards.

[0041]

[0042] The additive of formula (1-2) can be prepared by the method of US7417154.

[0043] Test method is with embodiment 1, and result is as follows:

[0044] Example

[0045] The results show that polyethylene panels colored with the composition of the invention have significantly lower warpage than polyethylene panels colored with pure Pigment Red 254.

Embodiment 3

[0047] Dry-mix 9g of Pigment Yellow 110 and 1g of the additive with the following structure, and then use the mixture to color polyethylene boards, and test the warpage of polyethylene boards.

[0048]

[0049] The additive of formula (1-3) can be prepared by the method of US7417154.

[0050] Test method is with embodiment 1, and result is as follows:

[0051] Example

[0052] The results show that polyethylene sheets colored with the composition of the invention have significantly lower warpage than polyethylene sheets colored with pure Pigment Yellow 110.

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PUM

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Abstract

The invention discloses a pigment composition with anti-warping property in plastics. The pigment comprises a compound shown in the formula (1), and a derivative in which two meta-positions or two meta-positions and para-position of a benzene ring with DPP structure are substituted with long-chain alkyl, alkoxy or alkyl sulphanyl in the body pigment, thereby improving the anti-warping property of the body pigment in the plastics.

Description

technical field [0001] The invention relates to a pigment composition for the warp-free coloring of plastics. Background technique [0002] Warpage (warpage) refers to the deformation phenomenon that occurs when the plastic is injected and cooled, especially those partially crystalline plastics. This can lead to deformation, shrinkage and crack formation of the injection molded part, making the processing of the material difficult. Injection molding with organic pigments often results in warpage. [0003] Many domestic and foreign companies have proposed methods to improve and eliminate this phenomenon before. In US4889562A, it is mentioned that the polymer coated with alkyl cellulose on the surface of the pigment improves the warpage resistance of the pigment; in US6180694B and US5274010A, polymers such as polyvinyl alcohol polyvinylpyrrolidone are used to improve the warpage resistance of the pigment; US6409956 and It is mentioned in US7417154 that the copolymer of acry...

Claims

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Application Information

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IPC IPC(8): C09B67/22
CPCC09B57/004
Inventor 龙夏珠
Owner CINIC CHEM SHANGHAI
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