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Tinted plastic product and thermoplastic composition for preparing the product

A composition, thermoplastic molding technology, used in dyeing, textiles and papermaking, instruments, etc.

Inactive Publication Date: 2002-07-10
BAYER CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In contrast, counterparts molded from thermoplastic aromatic polycarbonate have so far not been successfully tinted using this dip-dye tinting method

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] In a series of experiments whose results are summarized in Table 1 showing an embodiment of the present invention, polycarbonate resin (Makrolon 2608 resin, a homopolymer based on bisphenol A, with an MFR value of about 12g / 10min) It was blended with the indicated amount of PCL (CAPA 640, supplied by Solvay) to make a molding composition. Each of these compositions was molded into a disk with a diameter of about 4 inches and a thickness of about 0.125 inches using conventional injection molding techniques. The molded article was first immersed in a surfactant (formulation 2 for plastics, manufactured by BPI) at 82°C for 30 seconds. The discs conditioned in this way were then immersed in an aqueous solution containing water-soluble black dye (46300, produced by BPI). The temperature of the solution is about 82°C; the soaking time is 30 minutes. The solution is prepared by mixing 3 ounces of dye per 1 liter of water. The disc was not cleaned before toning.

[0049] The light ...

Embodiment 2

[0054] In another experiment, a toned product was made with a composition containing 70% polycarbonate and 30% PCTG. The preparation, molding and toning procedures of the composition followed the same procedures given in Example 1 above. The corresponding optical data measured are as follows: %TLT 53%; UVB=0% and UVA=16%.

Embodiment 3～13

[0056] The optical properties of another series of compositions were measured as shown below. In this series, a composition containing Makrolon 2608 and PCL (CAPA 640) was prepared according to the procedure given above, molded into articles, and toned. The optical properties of the toning product have been measured, as shown in the following table:

[0057] Table 2 Toning product before PCL toning UVA UVB example (%) Haze TLT Haze Δ TLT Δ 1 3 1 0.64 91.5 1.5 0.8 86.8 4.7--4 2 0.74 91.9 1.3 0.5 86.9 5.0--5 3 1.38 91.9 1.4 0.0 86.3 5.6--6 4 0.92 91.9 1.7 0.7 84.8 7.1--7 5 2 1.53 90.5 1.9 0.4 83.2 7.4 44 18 6 2.6 90.2 1.3 -1.3 81.7 8.5 40 19 7 1.0 90.0 1.6 0.6 69.4 20.6 24 010 8 1.4 88.8 1.9 0.6 33.7 55.1 9 111 9 1.5 89.7 4.0 2.5 20.2 69.5 7 012 10 1.5 90.1 2.9 1.5 13.7 76.4 5 013 15 1.3 94.6 4.5 3.2 1.9 92.7-- 1 : TLT before color adjustment minus TLT after color adjustment 2 : Average of 2 experiments

[0058] For the above records, different operators addi...

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Abstract

A thermoplastic molding composition comprising a transparent resinous component suitable for tinting by dip-dye method is disclosed. The resinous component is selected from the group consisting of (i) a blend of (co)polycarbonate resin and (co) polycaprolacone, and (ii) a copolymer containing carbonate and caprolactone structural units. The composition, characterized in that it is free of photochromic colorants, may be molded by thermoplastic means, and the molded article is then dippeddyed by immersion in a tinting solution. The tinted articles are suitable for making, among others, optical lenses.

Description

Technical field [0001] The present invention relates to a thermoplastic molding composition, a method for preparing a color-adjustable product using the same, and the color-adjustable product. More specifically, the present invention relates to: a molding composition, the resin component of which contains a structural unit derived from aromatic polycarbonate and a unit derived from polycaprolactone; manufacturing a dip-dye molding containing the component The method of the product; and the dyed product thus prepared. Background technique [0002] Polycarbonate resin is known for its excellent mechanical and optical properties. It is easily available on the market and has been widely used, including the preparation of optical lenses. Thermosetting polycarbonate resins are known to differ from their thermoplastic counterparts in properties, uses, and manufacturing methods. Articles made of thermosetting polycarbonate can be toned by dipping (or soaking) in an appropriate solution c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B1/04C08J7/02C08L67/00C08L67/04C08L69/00D06P1/00D06P3/52
CPCC08L69/00D06P3/52D06P1/0004C08L69/005C08L67/04
Inventor S·弗里斯南R·A·派尔斯R·L·阿奇J·B·约翰森
Owner BAYER CORP
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