CN106905570A - Distribute latex product of fragrance and preparation method thereof - Google Patents

Abstract

The invention discloses latex product for distributing fragrance and preparation method thereof.The raw material for distributing the latex product of fragrance includes following components according to mass parts：100 parts of Heveatexes, 1~12 part of tripolite loading essence and 0.5~3 part of vulcanizing agent.Latex product of the invention, comprising tripolite loading essence, in tripolite loading essence essence be adsorbed in the way of physical absorption it is diatomaceous it is porous in, the rate of volatilization of such essence can be substantially reduced so that distributing for fragrance can be more lasting.

Description

Fragrant latex product and method for preparing same

technical field

The present invention relates to the technical field of latex products, in particular to latex products emitting fragrance and a preparation method thereof.

Background technique

In recent years, with the rapid improvement of people's living standards and the increasing awareness of health, the leisure and fitness equipment industry is ushering in a spring of vigorous development. Natural rubber latex has the characteristics of excellent tensile strength, super high elasticity, and elongation at break of more than 700%. It is the best elastic material for fitness equipment. A series of leisure and fitness equipment prepared from natural latex through various special processes, such as latex tensioners, yoga tension belts, etc., have bright and colorful colors, high tensile strength, high stretching multiples, excellent resilience, and good anti-aging properties. features. Compared with traditional spring-type tensioners or cotton yoga stretching belts, natural latex fitness equipment is not easy to disconnect because of the latex tube, which has high safety and reliability and will not cause mechanical damage to the human body. It is mainly used for chest and arm muscle exercises. It is the most popular and practical tensioner accessory in the world (Europe and the United States) for fitness and body-building exercises.

Natural latex itself produces a non-toxic, harmless and non-irritating smell, which is similar to human milk and has a light taste accepted by many people, and it will slowly disappear in the air. However, the natural rubber products we come into contact with every day, especially traditional molded vulcanized products, will have an unpleasant smell more or less, and the smell of latex products is relatively inconspicuous. This may be caused by the volatilization of internal substances such as vulcanizers, plasticizers, lubricants, antioxidants, coupling agents and other additives in the product, or it may be caused by the oxidation or decomposition of small molecules produced by rubber during thermal processing. The result of volatilization. To effectively eliminate or reduce the concentration of volatile organic compounds, it is mainly achieved through the following two points: one is to control the production conditions, production environment, and standardize the production process during the production process, so as to reduce the possible pollution caused by external conditions on product pollution; the other is to Strictly screen the types of raw materials and control the dosage, use purer raw materials, try not to use materials containing pollutants or materials that produce harmful substances due to high temperature or reaction during the production process, and control the dosage of materials according to the specifications to avoid overdose resulting in exudation and volatilization.

Contents of the invention

In view of this, one aspect of the present invention is to provide an aromatic latex product that can emit a pleasant aroma for a long time.

A fragrance-emitting latex product, the raw materials of which include the following components in parts by mass: 100 parts of natural rubber latex, 1-12 parts of diatomite-loaded essence and 0.5-3 parts of vulcanizing agent.

Further, the diatomite-loaded essence contains 5-80wt% of essence, based on the total mass of the diatomite-loaded essence as 100wt%.

Further, the essence is hydrocarbons, alcohols, ethers, acids, esters, lactones, aldehydes, ketones, acetals (ketones), nitriles, phenols, heterocycles and various One or at least two of the sulfur- and nitrogen-containing compounds.

Further, the raw materials also contain 1 to 5 parts of active agent in parts by mass;

Preferably, the activator is zinc oxide.

Further, the raw materials also contain 0.5-3.0 parts of accelerator according to parts by mass;

Preferably, the accelerator is accelerator PX or TMTD.

Further, the raw materials also contain 0.5-3 parts of anti-aging agent according to parts by mass;

Preferably, the antioxidant is antioxidant 1010 or antioxidant MB.

Further, the raw materials also contain 0.1-5 parts of pigments according to parts by mass.

Another aspect of the present invention is to provide a method for preparing an aromatic latex product, the latex product obtained by the preparation method can emit a pleasant aroma.

A kind of preparation method as above-mentioned latex product, comprises the following steps:

mixing raw materials including natural rubber latex, diatomaceous earth loaded flavor and vulcanizing agent;

And, vulcanizing the mixed raw materials.

Further, the mixing speed is 100-300 rpm, and the mixing time is 0.5-4 hours.

Further, the vulcanization temperature is 60-110°C;

Preferably, drying is also included after the mixing;

Preferably, the drying method is drying, and the drying temperature is 60-85°C.

The latex product of the present invention contains diatomaceous earth-loaded essence. In the diatomite-loaded essence, the essence is adsorbed in the pores of the diatomite by physical adsorption, so that the volatilization rate of the essence will be greatly reduced, and the fragrance will last longer.

detailed description

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. In case of conflict, the definitions in this specification shall prevail.

As used herein:

"Prepared from" is synonymous with "comprising". As used herein, the terms "comprises," "including," "has," "containing," or any other variation thereof, are intended to cover a non-exclusive inclusion. For example, a composition, step, method, article, or device comprising listed elements is not necessarily limited to those elements, but may include other elements not explicitly listed or inherent to such composition, step, method, article, or device. element.

The conjunction "consisting of" excludes any unspecified elements, steps or components. If used in a claim, this phrase will make the claim closed so that it does not contain material other than those described except for the customary impurities associated therewith. When the phrase "consisting of" appears in a clause of the subject of a claim rather than immediately following the subject matter, it only defines the elements described in that clause; other elements are not excluded from the claims as a whole. beyond the claims.

When amounts, concentrations, or other values or parameters are expressed in terms of ranges, preferred ranges, or ranges bounded by a series of upper preferred values and lower preferred values, it is to be understood that any range upper or preferred value combined with any lower range limit is specifically disclosed. All ranges formed by any pairing of values or preferred values, whether or not such ranges are individually disclosed. For example, when the range "1-5" is disclosed, the described range should be construed to include the ranges "1-4", "1-3", "1-2", "1-2 and 4-5" , "1 ~ 3 and 5" and so on. When a numerical range is described herein, unless otherwise stated, that range is intended to include its endpoints and all integers and fractions within the range.

"Parts by mass" refers to the basic measurement unit that expresses the mass ratio relationship of multiple components, and 1 part can represent any unit mass, such as 1g or 2.689g. If we say that the mass part of A component is a part, and the mass part of B component is b part, it means that the mass ratio of A component to B component is a:b. Alternatively, it means that the mass of component A is aK, and the mass of component B is bK (K is an arbitrary number, representing a multiple factor). It should not be misunderstood that, unlike the parts by mass, the sum of parts by mass of all components is not limited to 100 parts.

"And/or" is used to indicate that one or both of the stated situations may occur, for example, A and/or B includes (A and B) and (A or B);

In addition, the indefinite articles "a" and "an" preceding an element or component of the present invention have no limitation on the quantity requirement (ie, the number of occurrences) of the element or component. Thus "a" or "an" should be read to include one or at least one, and elements or components in the singular also include the plural unless the number is clearly intended to be in the singular.

The fragrance-emitting latex product of the present invention comprises the following components in parts by mass: 100 parts of natural rubber latex, 1-12 parts of diatomite-loaded essence and 0.5-3 parts of vulcanizing agent. Specifically, the mass parts of vulcanizing agent can be 1 part, 1.5 parts, 2 parts, 2.5 parts, 3 parts, 4 parts, 6 parts, 8 parts, 9 parts, 11 parts, 11.5 parts or 12 parts etc.; The parts by mass can be 0.50 parts, 0.52 parts, 0.55 parts, 0.6 parts, 0.8 parts, 1 part, 1.5 parts, 1.8 parts, 2 parts, 2.5 parts, 2.8 parts or 3 parts, etc.

The water content of the above-mentioned natural rubber latex is not particularly strictly limited, preferably, its dry rubber content is 60%. It should be noted that 100 parts of natural rubber latex is based on dry rubber of natural rubber latex. For example, 167 parts of natural latex with a dry rubber content of 60% has 100 parts of natural latex.

The aforementioned diatomaceous earth-loaded essence means that the essence is supported on diatomaceous earth. The preparation method of diatomite-loaded essence can use the conventional method of diatomite-loaded known in the art, for example, diatomite and essence are physically adsorbed on diatomite at 30-80°C. Of course, in order to improve the adsorption capacity of diatomite, the diatomite can be activated. One activation method can be listed: first bake in a muffle furnace at 500°C for 2 hours, and then soak in 1mol/L NaCl solution for about 3 hours.

The average particle size of the diatomite used for diatomite loaded essence can be 3-10μm, the pore size distribution is 50-3000nm, the specific surface area is 40-65㎡/g, and the pore volume is 0.45-0.98m ³ /g.

In the diatomite-loaded essence, the essence is adsorbed in the pores of the diatomite by physical adsorption, so that the volatilization rate of the essence will be greatly reduced, and the fragrance will last longer.

Diatomaceous earth-loaded essence contains 5-80wt% essence, such as 5wt%, 5.5wt%, 6wt%, 10wt%, 20wt%, 30wt%, 40wt%, 50wt%, 60wt%, 70wt%, 78wt%, or 80wt% %, based on the total mass of diatomite-loaded essence as 100wt%.

The flavors used in diatomite-loaded flavors can be hydrocarbons, alcohols, ethers, acids, esters, lactones, aldehydes, ketones, acetals (ketones), nitriles, phenols, heterocycles One or at least two kinds of synthetic flavors such as phytochemicals and various sulfur- and nitrogen-containing compounds. Specifically, ethyl butyrate, butyl butyrate, hexyl butyrate, phyllyl butyrate, n-pentyl butyrate, ethyl phenylacetate, phenylethyl phenylacetate, anisaldehyde, anise Alcohol trans-2-hexenoate, trans-2-hexenoate, trans-2-hexenoate methyl ester, trans-2-hexenoate ethyl ester, citronellyl formate, geranyl formate , butyl lactate, ethyl lactate, isoamyl salicylate, thiogeraniol, phylloyl caproate, ethyl caproate, ethyl dodecanoate, ethyl myristate, ethyl cinnamate, Isoamyl Isovalerate, Ethyl Heptanoate, Allyl Heptanoate, Ethyl Propionate, Linalyl Acetate, 2-Methyl Butyl Acetate, Isoamyl Acetate, Benzyl Acetate, Neryl Acetate, Acetic Acid Geranyl, Menthyl Acetate, Citronellyl Acetate, Butyl Acetate, Isobutyl Acetate, Linalyl Acetate, 2-Methyl Acetate, Phenylethyl Acetate, Trans-2-Hexenyl Acetate, Isobutyl Ethyl isovalerate, ethyl isovalerate, ethyl 2-methylbutyrate, 2-methylbutyl 2-methylbutyrate. In addition, it can also be natural flavors, such as lavender essential oil, rose essential oil, osmanthus essential oil, lemon essential oil, rosemary essential oil, jasmine essential oil, bergamot oil, chamomile essential oil, Atlantic cedar essential oil, nutmeg oil, ginger oil, thyme oil , Cypress, Sweet Orange and Benzoin essential oils.

Examples of the vulcanizing agent include sulfur and peroxide vulcanizing agents, preferably sulfur. Peroxide vulcanizing agents such as DCP (dicumyl peroxide), BPMC (1,1-bis(tert-butyl peroxy)-3,3,5-trimethylcyclohexane) BIBP ([bis (tert-butyl peroxycumene) benzene]), BCP (tert-butyl cumene peroxide), etc.

In order to increase the rate of vulcanization, the raw materials of latex products can contain 1 to 5 parts of active agent, and the active agent can be 1 part, 1.5 parts, 2 parts, 2.5 parts, 3 parts, 3.5 parts, 4 parts, 4.5 parts or 5 parts, etc. .

The active agent may preferably be zinc oxide, but of course other known forms such as magnesium oxide and the like may also be used.

In order to increase the rate of vulcanization, the raw material of latex products may contain 0.5-3.0 parts of accelerator. The accelerator is accelerator PX or TMTD.

Of course, other known forms such as Accelerator ZDC, Accelerator EZ or Accelerator M can also be used.

As the latex product of the present invention, its raw materials also contain 0.5-3 parts of anti-aging agent according to parts by mass. The anti-aging agent is preferably Antioxidant 1010 or Antioxidant MB, and may also be other known forms in the art, such as anti-aging agent BHT264. Here, the anti-aging agent BHT264 is anti-aging agent 264, another name is antioxidant 264, and its chemical name is 6-di-tert-butyl-p-cresol, etc.

The raw materials also contain 0.1-5 parts of pigment according to parts by mass. Pigments can be selected according to color requirements.

In addition to the above, dispersants can of course also be added. Examples of the dispersant include sodium methylene dinaphthalene sulfonate, sodium triphosphate, polyvinyl alcohol, and the like. As for the amount of dispersant, it can be routinely adjusted as needed.

The preparation method of the present invention as above-mentioned latex product, comprises the following steps:

mixing raw materials including natural rubber latex, diatomaceous earth loaded flavor and vulcanizing agent;

And, vulcanizing the mixed raw materials.

In the preparation method of the present invention, the mixing speed is 100-300 rpm, and the mixing time is 0.5-4 hours.

In the preparation method of the present invention, the vulcanization temperature is 60-110°C;

Drying is also included after mixing; the drying method is drying, and the drying temperature is 60-85°C.

It should be noted that sealing and packaging the latex products (such as rubber tubes or films) prepared above, or using methods such as pasting plastic films on the surface of latex products can reduce the volatilization of fragrance substances during storage and prolong the life of fragrance.

What is not mentioned above is applicable to the prior art.

Example 1

Step 1. First, stir industrial diatomaceous earth powder with plant essential oils (osmanthus essential oil and jasmine essential oil in a ratio of 2:3) in a ratio of 1:2 (rotational speed is 200-300rpm), and keep it at 60°C for about 4 hours to promote The adsorption balance of diatomite can obtain the diatomite-loaded essence with the essence content of about 60%.

Step 2, in parts by mass, add 10 parts of diatomite-loaded essence, 3 parts of sulfur, 5 parts of zinc oxide, 1.5 parts of accelerator PX and 2 parts of anti-aging agent 1010 into 100 parts of natural rubber latex, and use mechanical stirring, Stir at a stirring speed of 300rpm for 0.5h, evenly disperse it in the natural rubber latex, and set aside.

Step 3: Dip the square aluminum plate impregnated with the coagulant (mainly composed of calcium nitrate and bentonite) into the above-mentioned latex for a certain period of time at room temperature according to the conventional method, so that the latex is solidified and formed on the surface of the square aluminum plate to reach the required thickness. Then take it out, and then place the whole mold in a hot air oven at 110°C for 30 minutes to vulcanize and shape, and then go through demoulding, chlorination (soaking in sodium hypochlorite solution for 5 minutes), boiling and leaching (boiling temperature is 70°C), hot air Processes such as drying and post-vulcanization (drying temperature is 85 ℃) obtain the square latex film with aromatic smell.

Step 4: Seal the latex film prepared above with a sealing bag and store it in the dark at room temperature.

Tested by known methods, the latex film still retains the mixed fragrance of osmanthus and jasmine after being sealed for two months.

Example 2

Step 1. First, stir industrial natural diatomaceous earth powder with p-methylbenzyl acetate, isobutyl benzoate, and geraniol (the ratio of the three is 1:1:2) in a ratio of 1:2, and the rotation speed is 200-300rpm , kept at 50° C. for about 6 hours to promote the adsorption balance of diatomite to obtain a diatomite-loaded flavor with a flavor content of about 65%.

Step 2, in parts by mass, add 8 parts of the above-mentioned diatomite-loaded essence, 2 parts of sulfur, 4 parts of zinc oxide, 1 part of accelerator PX and 2 parts of antioxidant MB into 100 parts of natural rubber latex, and use mechanical stirring , stirred at a stirring speed of 200rpm for 1h, evenly dispersed in natural latex, and set aside.

Step 3: Dip the square aluminum plate impregnated with the coagulant (mainly composed of calcium nitrate and bentonite) into the above-mentioned latex for a certain period of time at room temperature according to the conventional method, so that the latex is solidified and formed on the surface of the square aluminum plate to reach the required thickness. After taking it out, put the whole mold in a hot air oven at 100°C for 30 minutes to vulcanize and shape, and then go through demoulding, chlorination (soaking in sodium hypochlorite solution for 3 minutes), boiling and leaching (at a temperature of 60°C), hot air drying and Post-vulcanization (75°C) and other procedures to obtain a square latex film with an aromatic smell.

Step 4: Seal the latex film prepared above with a sealing bag and store it in the dark at room temperature.

Tested by known methods, the latex film still retains the mixed smell of flowers and fruits after being sealed for four months.

Example 3

Step 1. First, industrial natural diatomaceous earth powder is stirred with a mixture comprising ethyl butyrate, allyl heptanoate and ethyl laurate (the ratio of the three is 1:1:1) in a ratio of 1:2 (rotating speed is 200-300rpm), kept at 60° C. for about 2 hours to promote the adsorption balance of diatomite to obtain a diatomite-loaded essence with an essence content of about 80%.

Step 2, in parts by mass, add 12 parts of the above diatomite-loaded essence, 1.5 parts of sulfur, 3 parts of zinc oxide, 1.5 parts of accelerator PX and 1.5 parts of antioxidant MB into 100 parts of natural rubber latex, and use mechanical stirring , stirred at a stirring speed of 250rpm for 2h, evenly dispersed in natural rubber latex, and set aside.

Step 3: Dip the square aluminum plate impregnated with the coagulant (mainly composed of calcium nitrate and bentonite) into the above-mentioned latex for a certain period of time at room temperature according to the conventional method, so that the latex is solidified and formed on the surface of the square aluminum plate to reach the required thickness. After taking it out, put the whole mold in a hot air oven at 90°C for 30 minutes for vulcanization and finalization, and then go through demoulding, chlorination (soaking in sodium hypochlorite solution for 4 minutes), boiling and leaching (at a temperature of 50°C), hot air drying and Post-vulcanization (70°C) and other processes to obtain a round latex hose with an aromatic smell.

Step 4: Seal the above-prepared latex hose with a sealing bag and store it in the dark at room temperature.

Tested by known methods, the latex film still retains the fruity fragrance of mixed pineapple and apple after being sealed for four months.

Example 4

Step 1. First, industrial natural diatomaceous earth powder is stirred (200- 300 rpm), kept at 60° C. for about 2 hours to promote the adsorption balance of diatomite, and obtained the diatomite-loaded essence with an essence content of about 40%.

Step 2: In terms of parts by mass, add 1 part of the above diatomite-loaded essence, 0.5 part of sulfur, 1 part of zinc oxide, 0.5 part of accelerator PX and 0.5 part of antioxidant MB into 100 parts of natural rubber latex, and use mechanical stirring , stirred at a stirring speed of 250rpm for 2h, evenly dispersed in natural rubber latex, and set aside.

Step 3: Dip the square aluminum plate impregnated with the coagulant (mainly composed of calcium nitrate and bentonite) into the above-mentioned latex for a certain period of time at room temperature according to the conventional method, so that the latex is solidified and formed on the surface of the square aluminum plate to reach the required thickness. After taking it out, put the whole mold in a hot air oven at 90°C for 30 minutes for vulcanization and finalization, and then go through demoulding, chlorination (soaking in sodium hypochlorite solution for 4 minutes), boiling and leaching (at a temperature of 50°C), hot air drying and Post-vulcanization (70°C) and other processes to obtain a round latex hose with an aromatic smell.

Step 4: Seal the above-prepared latex hose with a sealing bag and store it in the dark at room temperature.

Tested by known methods, the latex film still retains the fruity fragrance of mixed pineapple and apple after being sealed for four months.

Example 5

Step 1. First, industrial natural diatomaceous earth powder is stirred (200- 300rpm), kept at 60° C. for about 2 hours to promote the adsorption balance of diatomite, to obtain a diatomite-loaded essence with an essence content of about 5%.

Step 2, in parts by mass, add 6.5 parts of the above-mentioned diatomite-loaded essence, 2 parts of sulfur, 5 parts of zinc oxide, 3 parts of accelerator PX and 3 parts of antioxidant MB into 100 parts of natural rubber latex, and use mechanical stirring , stirred at a stirring speed of 250rpm for 2h, evenly dispersed in natural rubber latex, and set aside.

Step 3: Dip the square aluminum plate impregnated with the coagulant (mainly composed of calcium nitrate and bentonite) into the above-mentioned latex for a certain period of time at room temperature according to the conventional method, so that the latex is solidified and formed on the surface of the square aluminum plate to reach the required thickness. After taking it out, put the whole mold in a hot air oven at 90°C for 30 minutes for vulcanization and finalization, and then go through demoulding, chlorination (soaking in sodium hypochlorite solution for 4 minutes), boiling and leaching (at a temperature of 50°C), hot air drying and Post-vulcanization (70°C) and other processes to obtain a round latex hose with an aromatic smell.

Step 4: Seal the above-prepared latex hose with a sealing bag and store it in the dark at room temperature.

Tested by known methods, the latex film still retains the fruity fragrance of mixed pineapple and apple after being sealed for four months.

Since the numerical ranges of the various process parameters involved in the present invention cannot be fully embodied in the above-mentioned embodiments, those skilled in the art can fully imagine that the present invention can be implemented as long as any numerical value falls within the above-mentioned numerical ranges, Of course, any combination of specific values within the numerical range of several items is also included. Here, for the sake of space, the examples giving specific values within one or more numerical ranges are omitted, which should not be regarded as insufficient disclosure of the technical solution of the present invention.

The applicant declares that the present invention illustrates the detailed process equipment and process flow of the present invention through the above-mentioned examples, but the present invention is not limited to the above-mentioned detailed process equipment and process flow, that is, it does not mean that the present invention must rely on the above-mentioned detailed process equipment and process flow process can be implemented. Those skilled in the art should understand that any improvement of the present invention, the equivalent replacement of each raw material of the product of the present invention, the addition of auxiliary components, the selection of specific methods, etc., fall within the protection scope of the present invention.

Claims (10)

1. A fragrant latex product, characterized in that its raw materials comprise the following components in parts by mass: 100 parts of natural rubber latex, 1 to 12 parts of diatomaceous earth-loaded essence and 0.5 to 3 parts of vulcanizing agent. 2 . The latex product according to claim 1 , wherein the diatomite-loaded essence contains 5-80 wt % of essence, based on the total mass of the diatomite-loaded essence as 100 wt %. 3 . 3. latex product according to claim 2, is characterized in that, described essence is hydrocarbons, alcohols, ethers, acids, esters, lactones, aldehydes, ketones, acetals (ketones) One or at least two kinds of compounds, nitriles, phenols, heterocycles and various sulfur- and nitrogen-containing compounds. 4. latex product according to claim 1, is characterized in that, its raw material also comprises 1～5 active agent according to mass parts; Preferably, the activator is zinc oxide. 5. The latex product according to claim 1, characterized in that, its raw materials also include 0.5 to 3.0 parts of accelerator in parts by mass; Preferably, the accelerator is accelerator PX or TMTD. 6. The latex product according to claim 1, characterized in that, its raw materials also include 0.5 to 3 parts of anti-aging agent in parts by mass; Preferably, the antioxidant is antioxidant 1010 or antioxidant MB. 7 . The latex product according to claim 1 , wherein the raw material further comprises 0.1 to 5 parts of pigment in parts by mass. 8. a preparation method of latex product as claimed in claim 1, is characterized in that, comprises the following steps: mixing raw materials including natural rubber latex, diatomaceous earth loaded flavor and vulcanizing agent; And, vulcanizing the mixed raw materials. 9 . The preparation method according to claim 8 , characterized in that, the mixing speed is 100-300 rpm, and the mixing time is 0.5-4 hours. 10. The preparation method according to claim 8, characterized in that, the vulcanization temperature is 60-110°C; Preferably, drying is also included after the mixing; Preferably, the drying method is drying, and the drying temperature is 60-85°C.