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Octanal diuracil as well as preparation method and application thereof

A technology of octanal diuracil and dimethyl uracil, which is applied in the field of PVC calcium zinc heat stabilizers, can solve the problems of PVC sheet yellowing, etc., and achieve high initial whiteness, good thermal stability, dynamic and static thermal stability The effect of prolonged

Pending Publication Date: 2022-02-08
慧科高新科技股份有限公司
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  • Abstract
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AI Technical Summary

Problems solved by technology

[0004] The traditional additives used to improve the whiteness of PVC bathroom panels are mostly fluorescent whitening agents. Fluorescent whitening agents have a half-life, and PVC panels will turn yellow after a period of use.

Method used

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  • Octanal diuracil as well as preparation method and application thereof
  • Octanal diuracil as well as preparation method and application thereof
  • Octanal diuracil as well as preparation method and application thereof

Examples

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Embodiment 1

[0026] Dissolve 69 parts by weight of DAU in deionized water, and perform magnetic stirring in a 35°C oil bath to completely dissolve the DAU, vacuumize the flask, and then fill it with nitrogen, repeat 3 times, and then fill it with nitrogen protection. 31 parts by weight of octanal was dropped into the flask by using a constant pressure dropping funnel, and the reaction was fully stirred for 48 hours. After the reaction, the precipitate was filtered out with suction, washed three times with deionized water, and dried in a vacuum oven at 45° C. to obtain the octanal bisuracil product (OSU for short).

[0027] Using the environmentally friendly nitrogen-containing PVC heat stabilizer octylaldiuracil for PVC bathroom foam board products produced in Example 1, the traditional calcium-zinc stabilizer was used as a comparative example, and PVC bath foam boards were prepared according to the existing process, as shown in the table 1 is the formula comparison (in parts by weight) of...

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Abstract

The invention belongs to the technical field of chemical synthesis, and particularly relates to octanal diuracil as well as a preparation method and application thereof. The octanal diuracil is prepared from 6-amino-1,3-dimethyluracil and octanal. According to the national standard GB2113-82 Plastic Whiteness Experimental Method, compared with an auxiliary agent used by a traditional calcium-zinc stabilizer, the caprylic aldehyde diuracil PVC heat stabilizer prepared by the invention has the advantages of excellent initial whiteness and good heat stability. A whiteness contrast test shows that a board produced by using the octanal uracil PVC heat stabilizer has higher initial whiteness. A dynamic stability performance comparison test also shows that the octanal uracil serving as the auxiliary agent of the PVC heat stabilizer prepared by the invention can be used for enabling the initial whiteness of a PVC bathroom board to be higher and the dynamic and static heat stabilization time to be obviously prolonged.

Description

technical field [0001] The invention belongs to the technical field of PVC calcium-zinc heat stabilizers, and in particular relates to octylaldiuracil and its preparation method and application. Background technique [0002] Polyvinyl chloride (PVC) is one of the five most commonly used general-purpose plastics. Its advantages lie in high strength, wide application fields and low price. Its biggest disadvantage is that it is prone to decomposition under processing temperature conditions or long-term heating. The solution is to add heat stabilizers during PVC processing to delay the degradation process. In addition, when polyvinyl chloride is heated or exposed to ultraviolet radiation, it will also cause polymer degradation and de-HCl. Stabilizer is a kind of chemical additive, which can inhibit the degradation and discoloration of PVC caused by heat and light during processing and use. [0003] PVC bathroom foam board is used in the manufacture of PVC bathroom cabinets. T...

Claims

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Application Information

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IPC IPC(8): C07D239/545C08K5/3462C08L27/06
CPCC07D239/545C08K5/3462C08L2201/08C08L27/06
Inventor 唐潇东唐守余杜东光张海昌聂荣华李廷希李德刚杨朝平
Owner 慧科高新科技股份有限公司
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