Antibacterial latex prophylactic and production method thereof

Abstract

The invention relates to an antibacterial latex prophylactic and a production method thereof. The antibacterial latex prophylactic is characterized by being produced by the following raw materials based on the parts by weight (dry ratio): 100 parts of centrifugal concentration natural latex, 0.1-0.3 part of potassium hydroxide, 0.1-0.5 part of ammonia water, 0.1-0.5 part of surface active agent, 0.5-1.5 parts of sulphur, 0.5-1.5 parts of vulcanizing accelerator, 1.0-1.5 parts of anti-aging agent, 0.2-1.0 part of zinc oxide and 0.5-1.5 parts of antibacterial agent. The protein content in the centrifugal concentration natural latex is less than 3.5%; the surface active agent is methylene dinaphthyl sodium sulfonate or nonyl phenol polyoxyethylene (9) ether; the vulcanizing accelerator is thiuram type accelerator; and the antibacterial agent is nano Ag-Zn composite antibacterial agent with oiliness carrier. The product of the invention can effectively change the comprehensive performanceof an adhesive film, has the functions of sanitation and self-cleaning, generates inhibitory action for ordinary bacteria contacted with the product, and can kill the self bacteria of the product within a certain time.

Description

technical field [0001] The invention relates to a natural latex condom and a production method thereof, in particular to an antibacterial natural latex condom and a production method thereof. Background technique [0002] Antibacterial materials are a new generation of functional materials that emerged in the 1990s and developed rapidly in the world. They have the function of independently inhibiting or killing microorganisms on their surfaces. At present, it has been widely used in domestic building materials, coatings, ceramics, and plastics industries. [0003] Natural latex condoms are one of the most widely used contraceptive devices in the world. Condoms are disposable non-sterile medical devices. Since they have not been sterilized and sterilized, there are inevitably problems with microorganisms and bacteria. Condoms are endowed with antibacterial properties on the basis of the original functions, which play a positive and important role in preventing the occurrenc...

AI Technical Summary

Problems solved by technology

This patent relies on adding antibacterial substances to the lubricant on the surface of the condom to achieve a certain antibacterial and sterilizing effect. The product itself has no antibacterial effect, and the antibacterial substances are easy to lose, have no persistence, and the antibacterial efficiency is not high

[0005] Chinese patent application 200610088066.6 "Formulation and Manufacturing Method of Antibacterial Rubber Gloves" simply adds nano-silver antibacterial agent directly to the latex to achieve a certain antibacterial effect, but the dispersion effect of nano-silver antibacterial agent is not good, and it is easy to precipitate , which brings difficulties to production and processing, and when the silver ion content is high, the product is easy to change color and turn yellow, which affects the appearance

On the other hand, compared to thick products such as rubber gloves, latex condoms are film products, and quality problems such as air bubbles, pinholes, and sticking are prone to occur during production, and the processing technology is more complicated and the technical requirements are higher.

Although this patent has innovations in the selection and use of antibacterial agents compared with existing condom formulations, its technology cannot be directly applied to the field of antibacterial condom production

If the technical means of adding antibacterial agents to antibacterial rubber gloves is directly applied to latex condoms, it will not be suitable for use due to the high protein content in natural latex raw materials, because protein is easy to absorb water and cause mildew, such as in latex condoms. If the protein content is too high, the product itself is easy to mold and breed bacteria, which is even more unfavorable to the production of antibacterial latex condoms

Casein is generally used as a dispersant in the formula of latex condoms in the prior art, and the main component of casein is protein, which is also not conducive to anti-mold and antibacterial

Condom is a film product with high comprehensive performance requirements. Due to the particularity of the production process of latex products, various compounding agents must be prepared into dispersions, that is, a relatively stable dispersed phase particle size between 0.1 and 10 μm. Suspensions, emulsions or solutions of natural latex or synthetic latex, latex, etc., can be combined with film forming, leaching, drying, vulcanization, surface treatment and other processes smoothly. The above processing process gives latex condoms Adding antimicrobial properties poses extreme difficulties

When simply adopting nano-inorganic silver-based antibacterial agent to realize antibacterial function, there are the following problems: when it is prepared into a solid dispersion and added to the latex system, it is easy to precipitate and affect the antibacterial effect; and a large amount is required to achieve antibacterial effect. In this way, the content of silver ions is higher, which makes the products easy to change color and turn yellow during storage, while latex condoms are light-colored products, which affect the appearance.