57 results about "Natural resin" patented technology

The invention relates to the technical field of polymer composite materials, in particular to a polycaprolactone-based composite material as well as a preparation method and application thereof. The preparation method comprises the following steps: carrying out surface grafting treatment on nano cellulose to obtain modified nano cellulose; mixing the modified nanocellulose, polycaprolactone and a solvent to obtain slurry; carrying out melt blending and granulation on the slurry to obtain composite granules; and carrying out melt blending and granulation on the composite granules, a metal soap stabilizer and a natural resin derivative to obtain the polycaprolactone-based composite material. The polycaprolactone-based composite material prepared by a novel composite process of nano cellulose graft modification-solvent replacement synergetic melt co-extrusion has the core advantages of high mechanical strength, excellent light transmittance, long-acting weather resistance and the like, is good in processing adaptability and simple and convenient to operate, can realize continuous large-scale production, and remarkably reduces energy consumption and raw material cost.

The invention discloses an environment-friendly odorless sealing strip adhesive as well as preparation and application thereof, and the environment-friendly odorless sealing strip adhesive is prepared from the following components in parts by mass: 15 to 20 parts of polyacrylate resin, 10 to 15 parts of dammar resin, 5 to 10 parts of fir resin, 3 to 5 parts of hydrogenated terpene resin, 2 to 5 parts of tributyl citrate and 45 to 65 parts of n-decane. The preparation method comprises the following steps: uniformly mixing natural resin (dammar resin, fir resin and hydrogenated terpene resin), polymeric monomers (n-octyl acrylate, methyl methacrylate and hydroxyethyl acrylate) and an environment-friendly solvent (n-decane), and then polymerizing to obtain the environment-friendly adhesive. The synthetic resin (polyacrylate resin) and the natural resin are sufficiently and mutually dissolved in n-decane to form stable and uniform composite resin glue, so that the problems of health risk and environmental pollution caused by harmful solvents such as xylene in the traditional sealing glue are effectively avoided, and the characteristics of no toxicity, no odor and environmental protection of the product are realized; meanwhile, the stability and the bonding performance of the section sealing glue are improved, the matching performance of the optical transmittance and the refractive index of the section sealing glue is enhanced, and the section sealing glue has quick-drying performance and is suitable for medical pathological sections.

The invention discloses a natural resin adhesive, a production method and application in paper-plastic composite packaging, and belongs to the technical field of adhesives, raw materials adopt bio-based rosin resin and amber resin as main materials and polyimide resin containing antioxidant modified polysilsesquioxane as an auxiliary material, and the requirements of green and environmental protection are met. The adhesive has excellent ultraviolet shielding function, can meet the requirement of long-time adhesion of packaging without aging in paper-plastic composite packaging, and structurally contains rigid structures of polysilsesquioxane and titanium-based MOF, so that the overall strength of the adhesive can be improved, cracking and stripping are avoided, and the adhesive has high adhesive strength. And the porosity of the polysilsesquioxane and the titanium-based MOF can improve the heat dissipation capability of the adhesive.

The invention discloses a biomass-based degradable waterproof and oilproof coating as well as a preparation method and application thereof. The biomass-based degradable waterproof and oil-proof coating is composed of a waterproof coating and an oil-proof coating, and the waterproof coating is composed of a stearic acid emulsion, nano cellulose, a waterproof agent, an inorganic filler, a dispersant, a defoaming agent, a coalescing agent, a pH regulator and water. The oil-proof coating is prepared from natural resin, plant-based fatty acid ester, chitosan, nano cellulose, a waterproof agent, an oil-proof agent, inorganic filler, a dispersing agent, a defoaming agent, a preservative, a pH regulator and water. The biomass-based degradable waterproof and oil-proof coating has the advantages that the raw materials are natural in source, degradable and convenient to use, a formed coating has excellent waterproof and oil-proof performance and excellent thermal stability, and the like, can be used for products needing waterproof and oil-proof performance such as paper pulp molded products, and is suitable for large-scale industrial production and application.

The present invention relates, in particular, to a cosmetic composition for makeuping and / or caring for the skin and / or lips and / or eyelashes and / or hair, especially the skin, comprising in a physiologically acceptable aqueous medium: a) natural chitosan having a molecular weight strictly greater than 3,000 daltons, in an amount of at least 0.01% by mass relative to the total mass of the composition, and this amount being strictly less than 15% by mass; and b) at least one natural resin. The present invention also relates to a method for makeuping and / or caring for the skin and / or skin appendages, wherein the composition according to the present invention is applied to the skin and / or skin appendages.

The present invention relates to a chewing gum for mucosal delivery of cannabinoids, the chewing gum including water-soluble chewing gum ingredients and water-insoluble gum base, wherein the gum base has one or more natural resins in an amount of 10-40% by weight of the gum base, one or more elastomers in an amount of 3-30% by weight of the gum base, and one or more elastomer plasticizers in an amount of 8-50% by weight of the gum base, and wherein the water-soluble chewing gum ingredients include one or more sugar alcohols in an amount of 35-80% by weight of the chewing gum, and wherein the chewing gum has one or more cannabinoids.

Title: COSMETIC COMPOSITION COMPRISING A PARTICULAR POLYESTER, AT LEAST ONE VOLATILE SOLVENT AND AN UNMODIFIED HECTORITE TYPE FILLER AND METHOD USING IT The present invention relates to a cosmetic composition, in particular for making up human keratin materials, in particular the skin and / or the lips, preferably the lips, comprising:- at least one natural resin,- at least one polyester which is the reaction product of the following components (i), (ii) and (iii): (i) at least one polyglycerol-3 (ii) at least one dimer acid, and (iii) at least one fatty monoacid having from 8 to 30 carbon atoms, the reacted components (i), (ii) and (iii) being in a molar ratio of 1 mole of polyglycerol-3, from 0.5 to 1 mole of dimer acid and from 0.1 to less than 2.0 moles of fatty monoacid,- at least one volatile solvent, - optionally at least one non-volatile hydrocarbon oil, - at least one unmodified hectorite type filler.It also relates to a method of treatment, in particular of makeup, of human keratin materials, in which this composition is applied to said keratin materials.

Title: COSMETIC COMPOSITION COMPRISING A NATURAL RESIN, A CELLULOSE ETHER, A PARTICULAR POLYESTER, VOLATILE COMPOUNDS AND A CELLULOSE-TYPE FILLER, AND METHOD USING IT The present invention relates to a cosmetic composition, in particular for making up human keratin materials, in particular the skin and / or the lips, comprising:- at least one natural resin,- at least one alkylcellulose whose alkyl group is C2-C3,- at least one polyester which is the reaction product of the following components (i), (ii) and (iii):(i) at least one polyglycerol-3(ii) at least one dimer acid, and(iii) at least one fatty monoacid having from 8 to 30 carbon atoms,the components (i), (ii) and (iii) reacted being in a molar ratio of 1 mole of polyglycerol-3, from 0.5 to 1 mole of dimer acid and from 0.1 to less than 2.0 moles of monofatty acid,- at least one C2-C6 monoalcohol,- at least one volatile oil;- optionally at least one non-volatile hydrocarbon oil, different from the aforementioned polyester, or silicone, as well as their mixtures; - at least one cellulose-type filler. It also relates to a method of treatment, in particular of makeup, of human keratin materials, in which this composition is applied to said keratin materials.;

The present invention relates to a cosmetic composition comprising, in a physiologically acceptable medium: at least one volatile oil, at least one volatile alcohol, at least one natural resin, and at least one crystallizable fatty substance; and the use of such a composition for improving the durability and / or friction resistance of a film obtained by applying said composition to a keratin material.

The invention relates to a lubricant for drilling fluid, a lubricant additive and a preparation method and application of the lubricant and the lubricant additive. The lubricant additive comprises C8-C14 vegetable oil, molybdenum disilicide, natural resin and / or modified natural resin, an algal polysaccharide solution, a nonionic surfactant and a defoaming agent. The C8-C14 vegetable oil with excellent thermal stability and the anti-extreme-pressure molybdenum disilicide are used as core lubricating components, and are compounded with the anti-salt emulsification system consisting of the natural resin, the algal polysaccharide and the surfactant and the defoaming agent, so that the lubricant still keeps stable lubricating property and emulsification state in extreme environments such as high temperature (more than 200 DEG C) and high salt; the defects that a traditional product is easy to decompose and demulsify are effectively overcome, the defoaming agent has excellent defoaming capacity and wide universality, and the efficiency and safety of deep well and ultra-deep well drilling operation are remarkably improved.

Polymer concrete as a material consisting of fillers, a binder, and a hardener, wherein the weight fraction of the fillers is between 75% and 95%, the weight fraction of the vegetable oil or natural resin is between 3% and 18%, and the weight fraction of the hardener is between 2% and 15%, wherein the fillers comprise quartz flour with a weight fraction of 10% to 20%, sand with a grain size of 0 mm to 2 mm and a weight fraction of 20% to 30%, gravel with a grain size of 2 mm to 8 mm and a weight fraction of 30% to 40%, and gravel with a grain size of 8 mm to 16 mm and a weight fraction of 20% to 40%, characterized in that the binder consists of chemically modified vegetable oil or chemically modified natural resin, wherein the binder is triglycerides from vegetable oil or terpenes from natural resin, preferably from rosin. are modified to acrylates or polyols or epoxy resins or polyesters, wherein modified polyols are hardened by the addition of isocyanates or polyisocyanates, and / or wherein polyesters are hardened by the addition of polyols and / or wherein native acrylates or native unsaturated polyesters are polymerized by radicals.

The application discloses a method for preparing direct-writing carbon nanotube conductive ink by using microfluidic technology, which comprises the following steps: (1) pumping carbon nanotube dispersion liquid, polysaccharide derivative solution and natural resin binder into different sample inlets of a microfluidic chip respectively, mixing in a microchannel to obtain mixed liquid A; (2) pumping rheological modifier and crosslinking agent into an auxiliary sample inlet of the microfluidic chip, and continuing to mix mixed liquid A in a mixing channel to obtain mixed liquid B; and (3) performing concentration treatment on mixed liquid B, adjusting solid content and viscosity, and obtaining the product directly. The microfluidic chip is used to mix the components uniformly in the microchannel within several seconds, and the efficiency is improved by hundreds of times. The obtained ink has excellent dispersion stability, resistivity of less than or equal to 10 ohm*cm and direct-writing printing adaptability, realizes continuous production of the carbon nanotube conductive ink, has good batch consistency, and the process is green and environmentally-friendly.

The present invention relates to a cosmetic composition, notably for making up human keratin materials, in particular the skin and / or the lips, preferably the lips, comprising: - at least one natural resin; - at least one polyester which is the product of reaction of components (i), (ii) and (iii) below: (i) at least one polyglycerol-3, (ii) at least one dimer acid, and (iii) at least one fatty monoacid containing from 8 to 30 carbon atoms; the reacted components (i), (ii) and (iii) being in a mole ratio of 1 mol of polyglycerol-3, 0.5 to 1 mol of dimer acid and from 0.1 to less than 2.0 mol of fatty monoacid, - at least one volatile solvent, - optionally at least one nonvolatile hydrocarbon-based oil, - at least one filler of diatomaceous earth, silica or unmodified hectorite type. The invention also relates to a process for treating, notably for making up, human keratin materials, in which this composition is applied to said keratin materials.

The invention discloses an ibuprofen transdermal patch based on core-shell structure viscous electrostatic spinning fibers and a preparation method of the ibuprofen transdermal patch, and belongs to the technical field of external transdermal patches. A viscous fiber membrane constructed based on core-shell structure electrospun fibers is used as a functional layer; a shell layer of the fibers is formed by curing a spinning solution formed by dissolving a thermoplastic elastomer and natural resin in an organic solvent B, and provides stable viscosity; the core layer is formed by curing a spinning solution formed by dissolving ibuprofen, a hydrophobic polymer and a penetration enhancer in an organic solvent A, and efficient loading and controllable release of drugs are achieved. By optimizing the shell-core flow rate ratio, spinning voltage and other key process parameters, the patch has the characteristics of strong adhesion in the initial stage and easy stripping in the later stage, and meanwhile, it is ensured that the transdermal permeation amount and release rate of the medicine meet the treatment requirements. The patch has the characteristics of high porosity and biphasic drug release which takes effect quickly in the initial stage and is maintained slowly in the subsequent stage, effectively avoids the first-pass effect and the skin irritation risk, and is particularly suitable for local treatment of inflammatory diseases such as acute gouty arthritis and the like.

Composition comprising a natural resin and a specific organic compound. The present invention relates to a cosmetic composition, particularly for makeup and / or skin and / or lip care, especially for the skin, comprising, in a physiologically acceptable medium: a) at least one saturated organic compound, linear or branched, cyclic or non-cyclic, of general formula CnH2nO3 in which the subscript n is an integer such that 5 ≤ n ≤ 9, preferably such that 6 ≤ n ≤ 9; and said compound comprises at least one hydroxyl group and at least one ester or ether functional group; and b) at least one natural resin. Figure for the abstract: none

The present invention discloses a solid depilatory wax and a preparation method thereof, relating to the technical field of depilatory wax. The solid depilatory wax comprises the following raw material components by mass fraction: 30-70% natural resin, 5-20% fatty alcohol, 3-20% natural wax, 2-10% tackifier, 0.2-5% natural plant oil, 0.2-5% anti-inflammatory, soothing and repairing agent, 0.2-3% skin conditioner, 0.2-3% antioxidant, and 0.2-2% stabilizer; wherein the tackifier is selected from at least one of polyisobutylene, hydrogenated polydicyclopentadiene, hydrogenated (styrene / methylstyrene / indene) copolymer, and hydrogenated (styrene / butadiene) copolymer; and the anti-inflammatory, soothing and repairing agent comprises component A and component B, wherein component A is guaiacyl ether, and component B is peppermint oil, purslane extract, golden chamomile extract, houttuynia cordata extract, and scutellaria baicalensis extract. The depilatory wax provided by the present invention has a low melting point and a good depilatory effect, and can improve the damaged skin barrier function caused by hair plucking, thereby preventing skin or skin follicle inflammation caused by hair removal.

The invention discloses biomass-based food-grade water-based gloss oil as well as a preparation method and application thereof. The biomass-based food-grade water-based gloss oil comprises the following preparation raw materials in percentage by weight: 15-25% of macromolecular natural resin; 3%-15% of small molecule natural resin; 2%-5% of vegetable fat; 1%-3% of inorganic filler; 10%-18% of a low-boiling-point cosolvent; 1%-3% of a high-boiling-point cosolvent; 0.3%-0.6% of a metal ion cross-linking agent; 0.1%-0.3% of a defoaming agent; and the balance of water. The biomass-based food-grade water-based gloss oil disclosed by the invention has the advantages of high solid content, low viscosity, high drying speed, good film-forming property, no plastic, no fluorine, degradability and the like, and a uniform and compact film formed by coating a paper product with the biomass-based food-grade water-based gloss oil can endow the paper product with high glossiness and excellent wear resistance and waterproof and oil-proof properties; raw paper recycling and re-pulping are not affected, and the method is suitable for large-scale industrial application.

The invention relates to a cosmetic composition, in particular for making up and / or caring for skin and / or lips and / or eyelashes and / or hair, in particular skin, the invention relates to a composition comprising, in a physiologically acceptable aqueous medium, a) at least 0.01% by weight, relative to the total weight of the composition, of a natural chitosan having a molecular weight strictly greater than 3000 Daltons in an amount strictly less than 15% by weight, and b) at least one natural resin. The invention also relates to a method for making up and / or caring for the skin and / or skin appendages, wherein a composition according to the invention is applied to the skin and / or skin appendages.

Wadding (1), in particular as an insulating layer for textiles, wherein the wadding (1) comprises at least one layer of fibers (2), wherein the fibers (2) of the layer (3) are bonded to one another at their contact points (5) by means of at least one natural resin (4).

The invention provides a method for salt-free dyeing of a cationic assistant modified cotton textile, which comprises the following steps: preparing a natural resin nano-particle solution from natural resin by an anti-solvent method, adding a quaternization reagent into the natural resin nano-particle solution, and reacting to obtain a cationic assistant; the cotton textile is treated in a pretreatment solution containing the cationic auxiliary agent and then is subjected to salt-free dyeing. According to the invention, the quaternary ammonium salt group is firmly grafted on the fiber surface through chemical bonding by utilizing the large specific surface area of the nanoparticles, so that the fiber is positively charged, and the dye uptake and the fixation efficiency of the reactive dye are effectively improved through electrostatic adsorption under the salt-free condition.

Animal entertainment device Animal entertainment device (1) comprising a tubular body (2), a support (3) which passes through the tubular body (2) through its hollow portion for attaching the device (1) to surfaces, and at least one retaining member (4) which attaches the tubular body (2) to the support (3), wherein the material of the tubular body (2) is a natural resin. [FIG. 1]

The invention relates to the field of medicine preparation, and particularly discloses an anti-allergic heavy-metal-free black plaster and a preparation method thereof. The method comprises the following steps: crushing and sieving medicinal materials to obtain medicinal powder; mixing the medicinal powder with vegetable oil, and frying at a low temperature of 150-200 DEG C until the medicinal powder is carbonized and burnt black; grinding and refining the obtained mixture by using a colloid mill until the particle size of solid particles is less than 10 microns to obtain uniform slurry; heating the slurry, adding natural rubber and / or natural resin, and stirring to form uniform colloidal paste; and finally cooling, coating and forming. According to the invention, yellow lead and artificial color in the traditional process are completely abandoned, so that a heavy metal sensitization source is completely eradicated from the source; low-temperature stir-frying is combined with refining of a colloid mill, so that the paste is fine, uniform and natural in color while medicinal components are retained; and a natural high polymer material is used as a forming matrix, so that the biocompatibility of the product is further ensured. The prepared black plaster has a good anti-allergic characteristic, and keeps the appearance and the curative effect of the traditional black plaster at the same time.

This invention discloses a sampling and observation device and operating method for preliminary judgment of the natural resin formation of agarwood, relating to the field of guiding mechanism technology. It includes a main body, a sampling structure at one end of the main body, a pushing component at the end of the sampling structure away from the main body, and a sampling channel at the axis of the sampling structure. One end of the sampling channel is connected to the main body. The sampling structure includes a sampling component and a gripping part for sampling agarwood. The pushing component includes a pushing part, the outer diameter of which is the same as the inner diameter of the sampling channel. The sampling component allows for minimally invasive sampling of the agarwood tree, avoiding destructive sampling methods such as cutting down trees or drilling holes. Only a small incision needs to be made in the tree to obtain samples from inside the trunk. Furthermore, because agarwood is relatively viscous, the pushing part can push the sample inside the sampling channel into the main body, preventing the agarwood from clogging the sampling channel.

Title: COSMETIC COMPOSITION COMPRISING A NATURAL RESIN, A CELLULOSE ETHER, A PARTICULAR POLYESTER, VOLATILE COMPOUNDS AND A FILLER, AND METHOD FOR IMPLEMENTING IT The present invention relates to a cosmetic composition, preferably for making up human keratin materials, in particular the skin and / or the lips, comprising:- at least one natural resin,- at least one alkylcellulose whose alkyl group is C2-C3,- at least one polyester which is the reaction product of the following components (i), (ii) and (iii): (i) at least one polyglycerol-3 (ii) at least one dimer acid, and (iii) at least one fatty monoacid having from 8 to 30 carbon atoms, the components (i), (ii) and (iii) reacted being in a molar ratio of 1 mole of polyglycerol-3, from 0.5 to 1 mole of dimer acid and from 0.1 to less than 2.0 moles of fatty monoacid,- at least one C2-C6 monoalcohol,- at least one volatile oil;- optionally at least one non-volatile hydrocarbon oil, different from the aforementioned polyester, or silicone, as well as their mixtures; - at least one filler. It also relates to a process for treating human keratin materials, in particular makeup, in which this composition is applied to said keratin materials.;

The present application relates to the technical field of papermaking, and particularly relates to a coating material for a high-transparency drawing paper surface coating layer, a high-transparency drawing paper prepared by the coating material and application of the high-transparency drawing paper in high-end packaging paper. The coating material for the high-transparency drawing paper surface coating layer is composed of the following components in percentage by mass: polyvinyl alcohol 10-20%, nano-silicon dioxide 2.0-8.0%, glycerol 1.0-5.0%, polyurethane particles 1.0-3.0%, natural resin 0.5-3.0%, and water in a remainder to 100%. By using the coating material of the present application on the surface coating layer of the drawing paper, the phenomenon of crease whitening of the high-transparency drawing paper is improved, and the composite requirements of transparency, flexibility and environmental protection of the high-transparency drawing paper in the high-end packaging field are met.

The invention relates to the field of preparation and processing of food packaging bags, in particular to a polylactic acid and natural plant fiber compounded food packaging bag and a preparation method thereof. The preparation method comprises the following steps: grafting modified polylactic acid with maleic anhydride, modifying natural plant fibers with laccase, blending the modified polylactic acid, the modified natural plant fibers and rosin-based natural resin according to a ratio, carrying out twin-screw extrusion grafting compounding, and then preparing composite granules with a nano-microporous structure by adopting a supercritical CO2 foaming process. And carrying out blow molding to obtain the food packaging bag. The natural antibacterial property is achieved through phenolic hydroxyl groups of the rosin-based natural resin, adsorption and slow release of gas are achieved in combination with the nano-microporous structure of the composite material, and the packaging bag is endowed with the inherent modified atmosphere fresh-keeping performance. The prepared packaging bag is free of any chemical additive, simple in preparation process and suitable for industrial production, and has a good application prospect in the field of food packaging.

The invention relates to the technical field of plate manufacturing, in particular to a low-formaldehyde integrated plate which comprises the following raw materials: a wood raw material, a modified MDI adhesive, a modified environment-friendly additive and modified nano silicon dioxide. According to the invention, the modified MDI adhesive is a formaldehyde-free bonding system modified by polyether polyol, and provides excellent basic bonding strength; the modified environment-friendly additive is a natural resin-vegetable oil composite system grafted and modified by maleic anhydride, and the water resistance and the flexibility of the board can be improved; the modified nano silicon dioxide is nano particles modified by a silane coupling agent KH-560, and interface gaps can be filled so as to enhance the mechanical property. The three modified materials and the wood raw materials are cooperatively matched, so that the low-formaldehyde and environment-friendly characteristics of the board are ensured, and good balance among the bonding strength, the water resistance and the mechanical property is realized, so that the board has the environment-friendly property and the practical property.

Title: COSMETIC COMPOSITION COMPRISING A PARTICULAR POLYESTER, AT LEAST ONE VOLATILE SOLVENT AND A SILICA-TYPE FILLER AND METHOD USING IT The present invention relates to a cosmetic composition, in particular for making up human keratin materials, in particular the skin and / or the lips, preferably the lips, comprising:- at least one natural resin,- at least one polyester which is the reaction product of the following components (i), (ii) and (iii): (i) at least one polyglycerol-3 (ii) at least one dimer acid, and (iii) at least one fatty monoacid having from 8 to 30 carbon atoms, the components (i), (ii) and (iii) reacted being in a molar ratio of 1 mole of polyglycerol-3, from 0.5 to 1 mole of dimer acid and from 0.1 to less than 2.0 moles of fatty monoacid,- at least one volatile solvent,- optionally at least one non-volatile hydrocarbon oil, - at least one silica-type filler.It also relates to a method of treatment, in particular of makeup, of human keratin materials, in which this composition is applied to said keratin materials.

This invention discloses a Peak racket made of wood fiber reinforced composite material and its preparation method, belonging to the field of sports equipment manufacturing. The racket surface uses softwood fiber, hardwood fiber, or nanocellulose fiber as the reinforcing phase, combined with biodegradable bioplastics, natural resins, and other matrix materials, and is manufactured through hot pressing, winding / layout, or 3D printing processes. This invention uses renewable wood fiber raw materials, resulting in a low carbon footprint and biodegradability, aligning with environmental protection principles. The product combines lightweight, high specific strength, and excellent damping performance, providing good vibration absorption, comfortable and stable use, while retaining the aesthetic appeal of natural wood grain. The manufacturing process is flexible and adaptable to different needs, enabling mass production or personalized design. The raw materials are readily available, and the process is mature, facilitating industrial promotion and effectively solving the problem of balancing environmental friendliness, performance, and aesthetics in existing rackets.

The present invention relates to a chewing gum for delivering cannabinoids to mucous membranes, the chewing gum being characterized in that it comprises water-soluble chewing gum ingredients and a water-insoluble chewing gum base, the chewing gum base comprising one or more natural resins in an amount of 10-40% by weight of the gum base, one or more elastomers in an amount of 3-30% by weight of the gum base, and one or more polyvinyl acetate elastomeric plasticizers in an amount of 8-50% by weight of the chewing gum base, wherein the water-soluble chewing gum ingredients comprise one or more sugar alcohols in an amount of 35-80% by weight of the chewing gum, and wherein the chewing gum comprises one or more cannabinoids in an amount of 0.1 to 200 mg per piece of chewing gum.