Composite clarifying agent, composition for neutral borosilicate medicinal glass as well as glass prepared from composition, and applications

A composite clarifying agent and medicinal glass technology, applied in the field of glass manufacturing, can solve the problems of reducing the content of harmful heavy metals in neutral borosilicate glass containers, failing to meet safety requirements, reducing the surface tension of neutral borosilicate glass liquid, etc., to achieve effective Conducive to drug safety, reducing the content of harmful heavy metals, clarifying the effect of a wide temperature range

Active Publication Date: 2021-04-09
东旭药玻(北京)科技有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to overcome the existing neutral borosilicate medical glass in the prior art, where the clarifying agent is dissolved out by arsenic, antimony, etc., which is not safe Requirements and other issues, provide a composite clarifying agent, neutral borosilicate pharmaceutical glass composition and the glass prepared therefrom and application, the composite clarifying agent can significantly reduce the surface tension of the neutral borosilicate glass liquid, utilize the glass liquid The discharge of air bubbles, and the composite clarifying agent does not contain arsenic and antimony, effectively reducing the harmful heavy metal content of neutral borosilicate glass containers, which is conducive to drug safety

Method used

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  • Composite clarifying agent, composition for neutral borosilicate medicinal glass as well as glass prepared from composition, and applications
  • Composite clarifying agent, composition for neutral borosilicate medicinal glass as well as glass prepared from composition, and applications
  • Composite clarifying agent, composition for neutral borosilicate medicinal glass as well as glass prepared from composition, and applications

Examples

Experimental program
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preparation example Construction

[0034] In the above preparation method, the raw materials can be used after premixing, which specifically includes:

[0035] a. Pre-mixing: first pre-mixing at least part of the quartz sand and at least part of the composite clarifier;

[0036] b. Add batching materials: add the pre-mixed materials as a raw material according to the proportion, mix well and set aside;

[0037] c. Put the above-mentioned uniformly mixed materials into a quartz crucible, keep warm at 1400-1450°C for 40-80 minutes, rise to 1580-1620°C for 120-180 minutes in 20-50 minutes, take out the crucible and keep warm at 530-570°C for 30-80 minutes Minutes for annealing treatment, and then lowered to room temperature with the furnace to prepare the neutral borosilicate medical glass.

[0038] In a specific embodiment of the present invention, the composite clarifying agent is weighed according to the proportion, 100 parts of quartz sand and 10 parts of composite clarifying agent are pre-mixed evenly with a...

Embodiment 1-12

[0045] The composite clarifying agent is weighed according to the ratio shown in the following table 1, 100 parts by weight of quartz sand and 10 parts by weight of composite clarifying agent are pre-mixed evenly with a small mixer, and the pre-mixed composite clarifying agent is used as The raw materials are added into the above-mentioned neutral borosilicate glass batch according to the calculated ratio (relative to 100 weight of neutral borosilicate glass batch, the addition amount of the composite clarifier is 0.8 parts by weight), mixed evenly, put into a quartz crucible, and Heat at 1430°C for 60 minutes, rise to 1600°C for 150 minutes in 30 minutes, take out the crucible and hold at 550°C for 60 minutes for annealing treatment, and then cool down to room temperature with the furnace to produce neutral borosilicate glass.

Embodiment 13-21

[0049] Carried out under the same conditions as in Example 11, the ratio of chloride salt: fluoride salt: cerium oxide in the composite clarifier is 1: 1.5: 2.5, the difference is: relative to 100 weight of neutral borosilicate glass batch material, according to Add the composite clarifying agent in the ratio shown in Table 3.

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Abstract

The invention relates to the field of glass manufacturing, and discloses a composite clarifying agent, a composition for neutral borosilicate medicinal glass as well as glass prepared from composition, and applications. The clarifying agent comprises chlorate, fluoride salt and valence-variable oxide, wherein the chlorate is selected from one or more of sodium chloride, calcium chloride, potassium chloride, barium chloride and ammonium chloride, the fluoride salt is sodium fluosilicate and / or calcium fluoride, and the variable valence oxide is tin oxide and / or cerium oxide. When the composite clarifying agent provided by the invention is applied to neutral borosilicate medicinal glass, the surface tension of molten glass can be remarkably reduced, and a good clarifying effect is achieved by utilizing the discharge of bubbles in the molten glass.

Description

technical field [0001] The invention relates to the field of glass manufacturing, in particular to a composite clarifier, a composition for neutral borosilicate medical glass, the prepared glass and applications thereof. Background technique [0002] Neutral borosilicate pharmaceutical glass belongs to neutral glass and Class I glass in category, and it is far superior to low borosilicate in terms of water resistance, acid and alkali resistance, freezing resistance, thermal stability and filling speed. Glass, and it is not easy to cause "flaking" phenomenon due to drug soaking and erosion. Compared with other medicinal glass bottles, it has incomparable advantages in ensuring the quality of drugs. It is an internationally recognized safe pharmaceutical packaging material. In my country, the proportion of neutral borosilicate glass used is less than 15%, and there is a great hidden danger of drug safety. [0003] The existing neutral borosilicate glass for medicine has problem...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03C3/091C03C1/00
CPCC03C3/091C03C1/004
Inventor 李青李赫然胡恒广安利营王博李志勇闫冬成
Owner 东旭药玻(北京)科技有限公司
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