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Preparation method of environment-friendly condom

A condom, environmentally friendly technology, applied in male contraceptives, coatings, etc., can solve the problem of no research reports on the adaptability of condoms to the human body, and achieve reduced mucosal irritation, high human adaptability, and improved biocompatibility. Effect

Inactive Publication Date: 2013-02-20
SHANGHAI MINGBANG RUBBER PROD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] It has been mentioned in various documents that by changing the type of accelerator in the vulcanization process, the residue of amine nitrite in the condom will be reduced, but there is no such thing as the human adaptability (that is, the adaptability to the structure of the human body) of the condom. Any research report, and as the requirements for various performance indicators of condoms are getting higher and higher, human body adaptability will inevitably become an important indicator for measuring the quality of condoms

Method used

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Embodiment 1

[0026] The mixing ratio of raw materials is as follows:

[0027]

[0028] In the above table, the percentages in the "ingredients" column are the concentration of the aqueous solution of the ingredients, that is, the mass percentage of the solute contained in the solution per unit mass.

[0029] The preparation method of the environment-friendly condom of the present embodiment comprises the following steps:

[0030] S1: Prepare the corresponding aqueous solution or dispersion according to the raw materials in the above table, and then mix it with an appropriate amount of water (the amount of water is determined by the total solid content), control the total solid content at 49-51%, and at the same time, control the pH value at 10.5, 4 hours after mixing, pre-vulcanize at 40-45°C for 20 hours, control the swelling value at 2.0, park and mature for 5 days, and then centrifuge at high speed to obtain the mixed emulsion for use;

[0031] S2: Dip a condom mold with a suitable ...

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Abstract

The invention discloses a preparation method of an environment-friendly condom. The preparation method comprises the steps of blending natural latex and proper blending components for 4h, then conducting prevulcanization for 18-24h, staying for aging to obtain blended latex for standby; gumming a condom die with a proper shape in the blended latex for two or three times and drying to form a latex film; and filtering, crimping, drying, swelling, removing die, soaking and washing, and dewatering the latex film, and then conducting additional vulcanization on the latex film to form the condom. According to the method disclosed by the invention, the selected raw materials can be used for producing a nipple for a baby, and particularly, a selected accelerant and a selected anti-aging agent are environment-friendly. As known to all, the nipple for the baby has an extremely strict requirement on residual ammonium nitrite, and the adaptability of a human body to the nipple for the baby is indisputable. The condom prepared by the method can simultaneously achieve the needed tensile strength and elongation and is safe and comfortable.

Description

technical field [0001] The invention relates to a method for preparing a condom, in particular to a method for preparing an environment-friendly condom. Background technique [0002] With the progress of society and the improvement of people's living standards, everyone has a new understanding of condoms, and their requirements for the quality of condoms are getting higher and higher. [0003] At present, most condoms are basically made of natural latex, but there are many problems. For example, the residues of amine nitrite or its precursors, allergen protein residues and other trace residues of pathogenic and teratogenic chemical components in condoms, as well as human adaptability, all need to be improved. [0004] At present, the traditional anti-aging agent (BHT) is widely used in the production of natural latex condoms at home and abroad. It is one of the potential factors that lead to the phenol yellow phenomenon of rubber products such as natural latex condoms, so t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L7/00C08L89/00C08K13/02C08K5/39C08K3/22C08K3/06C08K5/16B29C41/14A61F6/04
Inventor 潘青青蔡启杰王佳
Owner SHANGHAI MINGBANG RUBBER PROD
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