CN113456535A

CN113456535A - Nail polish gel meeting European Union personal use standard

Info

Publication number: CN113456535A
Application number: CN202110977353.7A
Authority: CN
Inventors: 周岚平; 罗德福
Original assignee: Guangdong Lantian Youchuangmei Cosmetics Co ltd
Current assignee: Guangdong Lantian Youchuangmei Cosmetics Co ltd
Priority date: 2020-10-21
Filing date: 2021-08-24
Publication date: 2021-10-01
Also published as: CN112168742A

Abstract

The invention provides a nail polish gel which meets the individual use standard of European Union, and the raw materials of the nail polish gel comprise oligomer, photoinitiator and reactive diluent which is treated by reduced pressure distillation; the oligomer is urethane acrylate; the photoinitiator consists of one or more of 184 photoinitiator, 1173 photoinitiator, 819 photoinitiator and TPO-L photoinitiator; the reactive diluent treated by reduced pressure distillation does not comprise HEMA. The nail polish gel meeting the individual use standard of European Union eliminates TPO and MEHQ which are harmful substances to human body, and an active diluent with low skin irritation, does not use HEMA which is an active diluent, and selects PUA with low skin irritation, thereby reducing allergic factors to human body and ensuring the individual use safety. The nail polish gel has the advantages of easy operation, low irritation, long retention time, wide application range, safety and the like.

Description

Nail polish gel meeting European Union personal use standard

Technical Field

The invention relates to nail polish gel, in particular to nail polish gel meeting the individual use standard of European Union.

Background

At present, nail art is a beautifying art for hand decoration, and has a history of over 500 years to date, and the modern nail art goes through three stages.

(1) An oily nail polish stage; it can reach the effect of film-forming nail beautification by solvent volatilization. The following drawbacks exist: the volatilization of the solvent causes environmental pollution, and the low ignition point easily causes fire hazard; the film is not long in retention time after being formed, and the dry film state is easily damaged by cleaning fluid and the like in daily life; the product contains nitrocellulose, a plasticizer, resin and volatile organic solvent, and can damage the natural protective layer on the surface of the nail after long-term use, so that the nail becomes thin and brittle, if the nail is coated too thickly, the nail can be prevented from breathing, and the nail can become yellow, dark and lustrous.

(2) A water-based nail polish stage; the film forming effect is achieved by volatilization of water, and the nail polish is environment-friendly; has the following disadvantages: the water resistance is insufficient, namely the water-resistant paint is easy to fall off after meeting water; the adhesive force is poor, and the difference is great compared with the ester solvent type nail polish; the problem that the detergent can fall off after being washed by warm water, soapy water and washing powder exists; after drying, the surface of the paint can be sticky again when meeting oil dirt; drying is too slow, and surface drying generally takes anywhere from a few minutes to tens of minutes, and even longer when it is dry.

(3) UV methyl lacquer glue stage; it is composed of light-cured resin, active diluent, photoinitiator, pigment, filler and the like; promoting a photoinitiator to generate free radicals by ultraviolet light, and then initiating the polymerization crosslinking of the resin and the reactive diluent; is the most popular nail art at present.

At present, the UV nail polish glue has the following advantages: the method is efficient: under the irradiation of an ultraviolet lamp, the curing can be completed within two minutes; environment-friendly: the oligomer and the reactive diluent both participate in the process of curing and film forming, and no solvent is volatilized; performance: the transparency is high after the film is solidified and formed; the toughness is good; fourthly, the coating film with excellent weather resistance and no yellowing can be prepared; the cross-linking density of the coating is high, the corrosion resistance is strong, and the retention time is long; sixthly, the UV nail polish gel with different performance requirements can be developed according to the difference of the application, such as: the glue is a diamond sticking glue, a carving glue, a line hooking glue, a metal glue, a gem glue, a transfer printing glue, a cat-eye glue, a transparent nail polish glue, a temperature-variable carving glue, a transfer printing glue, a temperature-variable glue, a water color glue, an optically variable glue, a one-step glue, a silk drawing glue, a bursting glue and the like.

The domestic nail polish gel is popularized and used in the market in the next half year of 2009, and compared with European Union, the regulations of the domestic nail polish gel on the aspect of use safety are yet to be further improved. The European Union has strict screening principles on nail polish gum components, and the composition standards and application ranges of the components of the UV nail polish gum used by professional lines and individuals of the European Union are as follows:

at present, most of domestic nail polish gel products are suitable for the category of professional lines of nail salons and nail shops; but does not meet personal use standards.

Therefore, there is a need to design a new nail polish gel which meets the use standards of individual European Union to overcome the above problems.

Disclosure of Invention

The invention aims to overcome the defects of the prior art and provide nail polish gel which meets the individual use standard of European Union, eliminates substances TPO and MEHQ which are harmful to human bodies, and active diluent with low skin irritation, does not use active diluent HEMA, selects PUA with low skin irritation, reduces allergic factors to human bodies, and ensures the individual use safety. The nail polish gel has the advantages of easy operation, low irritation, long retention time, wide application range, safety and the like.

The invention is realized by the following steps:

the invention provides a nail polish gel which meets the individual use standard of European Union, and the raw materials of the nail polish gel comprise oligomer, photoinitiator and reactive diluent which is treated by reduced pressure distillation;

the oligomer is urethane acrylate;

the photoinitiator consists of one or more of 184 photoinitiator, 1173 photoinitiator, 819 photoinitiator and TPO-L photoinitiator;

the reactive diluent treated by reduced pressure distillation does not comprise HEMA.

Further, the polyurethane acrylate is composed of dihydric alcohol, isocyanate, a blocking agent, a catalyst and a polymerization inhibitor.

Further, the isocyanate is isophorone diisocyanate, dicyclohexylmethane-4, 4-diisocyanate or hexamethylene diisocyanate.

Further, the catalyst is dibutyltin dilaurate, tetrabutylammonium bromide, triethylamine or triphenylphosphine;

further, the end-capping agent is a methacrylate functionalized with hydroxyl groups.

Further, the diol is polytetrahydrofuran and copolyether diol thereof, polytetrahydrofuran diol, polybutylene adipate diol, diethylene glycol adipate diol, polyhexamethylene glycol adipate diol, polyethylene glycol propylene glycol adipate diol, polyethylene glycol adipate diol, polybutylene glycol adipate diol, polyhexamethylene glycol neopentyl glycol adipate diol, 1.6-hexanediol polycarbonate diol, cyclohexanedimethanol polycarbonate-1.6-hexanediol diol, 1.5-pentanediol polycarbonate-1.6-hexanediol diol, 1.4-butanediol-1.6-hexanediol polycarbonate diol, polycaprolactone diol, or polycaprolactone diol.

Further, the polymerization inhibitor is 2, 6-di-tert-butyl-p-cresol.

Further, the nail polish glue is used for preparing a primer, and the primer comprises the following components in parts by mass:

LT 201035-45 parts

LT 201827-37 parts

25-35 parts of HPMA

1-4 parts of 184 photoinitiator

TPO-L photoinitiator 1-4 parts

0.1-0.5 part of BYK-333 leveling agent.

Further, the nail polish gel is used for preparing a color gel, and the color gel comprises the following components in parts by mass:

LT 202138-48 parts

LT 201313-23 parts

20-30 parts of PEG400DA 20

5-15 parts of HPMA

1-4 parts of 184 photoinitiator

819 parts of photoinitiator 0.1-3

TPO-L photoinitiator 1-4 parts

0.2-0.5 part of BYK-333 leveling agent

0.1 to 2 portions of color paste

0.1-1.6 parts of R974 anti-settling agent.

Further, the nail polish glue is used for preparing a seal layer, and the seal layer comprises the following components in parts by mass:

LT 201037-47 parts

LT 201520-30 parts

13-23 parts of PEGDMA

10-20 parts of HPMA

3-5 parts of TPO-L photoinitiator

0.1-0.5 part of BYK-333 leveling agent.

The invention has the following beneficial effects:

the nail polish gel meeting the individual use standard of European Union eliminates TPO and MEHQ which are harmful substances to human body, and an active diluent with low skin irritation, does not use HEMA which is an active diluent, and selects PUA with low skin irritation, thereby reducing allergic factors to human body and ensuring the individual use safety. The nail polish gel has the advantages of easy operation, low irritation, long retention time, wide application range, safety and the like.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The invention provides a nail polish gel which meets the individual use standard of European Union, and the raw materials of the nail polish gel comprise oligomer, photoinitiator and reactive diluent which is treated by reduced pressure distillation. The reactive diluent is a commercial reactive diluent for UV curing reaction, but does not contain HEMA, and the content of the IBOMA and the content of the MEHQ can be reduced after the vacuum distillation treatment of the commercial reactive diluent.

The oligomer is a urethane acrylate. The photoinitiator consists of one or more of 184 photoinitiator, 1173 photoinitiator, 819 photoinitiator, and TPO-L photoinitiator. The reactive diluent treated by reduced pressure distillation does not include HEMA (hydroxyethyl methacrylate).

Selection of the photoinitiator:

according to the classification of ECHA (European Chemicals Agency, ECHA for short) as a photoinitiator for LED and UV photocuring, TPO may be re-classified as a reproductive toxicity class 1B substance in CMR substance (hereinafter called as carcinogenic, mutagenic or reproductive toxicity class). TPO is now classified as reproductive toxicity 2 and has been classified based on actual data. With the addition of more experimental data, it is likely that TPO would be classified as reproductive toxicity class 1B.

The classification of CMR agents is based on the three separate classifications of carcinogenic, mutagenic and reproductive toxicity. In the CLP Regulation of the European Union (English name: Classification, laboratory and Packaging Regulation, Chinese name: Classification, labeling and Packaging Regulation), there are two categories of reproductive toxic substances, 1 and 2, respectively, and 1 is further classified into 1A and 1B. 1A refers to "Known reproductive toxicity (knock human reproductive toxin)" in humans, and is based on evidence from a large number of humans. And 1B means "Presumed to be reproductive toxic (pre-human reproductive toxin) to humans", and is evidence based on a number of animal experiments. For class 2, i.e., suspected of being reproductive toxic, based on evidence obtained from a human or laboratory animal, there may be additional evidence of adverse effects on sexual function and fertility, or development, but the evidence is not sufficient to convincingly list the substance as class 1, the substance is listed as reproductive toxic class 2.

Photoinitiators which have now been listed by the European Union ECHA as CMR reproductive toxicity 1B include morpholinobutyrophenone (CAS: 119313-12-1) (alias 369), 2-ethylhexyl 4- (dimethylamino) benzoate (CAS: 21245-02-3) (EHA for short), ethyl 4- (dimethylamino) benzoate (CAS: 10287-53-3) (EDB for short), 4-phenylbenzophenone (CAS: 2128-93-0) (PBZ for short) and 2-methyl-2- (4-morpholinyl) -1- [4- (methylthio) phenyl ] -1-propanone (CAS: 71868-10-5) (alias 907 for short). The use of all the photoinitiators listed in CMR 1B is very limited and can be banned in many products, in particular food-related products and products in close contact with the human body. From the data provided by ECHA, 819 and TPO-L present no reproductive health risk problems. Concerns for skin sensitivity are raised for 819, while there are no considerations that need to be addressed for TPO-L, neither risk being disabled.

Thus the photoinitiator of the present invention was selected from 184 photoinitiator, 1173 photoinitiator, 819 photoinitiator and TPO-L photoinitiator.

Selection of a polymerization inhibitor:

the MEHQ polymerization inhibitor is added to most of active diluents and oligomers on the market, and has the following characteristics: MEHQ (p-hydroxyanisole (4-Methoxyphenol)) application: the product is mainly used for polymerization inhibitors, ultraviolet inhibitors and dye intermediates of styrene, acrylic esters, acrylonitrile, vinyl acetate and other olefin monomers, and is used for synthesizing edible oil and fat, cosmetics and antioxidants BHA and the like. MEHQ is an effective polymerization inhibitor at low temperatures, but decomposes at high temperatures to lose its polymerization inhibiting effect, so that it is a good polymerization inhibitor for monomer storage and does not need to be removed before polymerization. Risk: is toxic; the toxic effects and even death after a single (or multiple 24-hour) dose of MEHQ are reported as: oral-rat LD 50: 1600 mg/kg; peritoneal cavity-mouse LD 50: 250 mg/kg; skin-rabbit 6000 mg/12 days mild intoxication; the flammability hazard property is flammable; the fire ground releases acrid and hot to stimulate smoke.

Because MEHQ has the potential safety hazard, a polymerization inhibitor which has good safety, low addition amount, light color and no yellowing or low yellowing in free radical polymerization needs to be found in the patent.

The polymerization inhibitor screening operation is as follows:

firstly, carrying out safety evaluation and hue screening on known polymerization inhibitors on the market, finding out polymerization inhibitors with light colors and good free radical polymerization inhibition effect, and respectively numbering the polymerization inhibitors A, B, C and D.

Secondly, sequentially adding the screened polymerization inhibitors A, B, C and D.once to the same reactive diluent and oligomer respectively, wherein the polymerization inhibitors have the same concentration, baking the mixture in a 70 ℃ oven after preparation, testing the viscosity change of the mixture in 6 days, 10 days and 15 days respectively, and finding out 1 group of polymerization inhibitor A1 with the minimum comprehensive viscosity change and hue change

Thirdly, 6-10 groups of polymerization inhibitor A1 screened out to have the best test result are respectively configured according to the principle of proportional increasing, further oven test is carried out, the temperature is constant at 75 ℃, the polymerization inhibitor A1 is taken out after 15 days, the viscosity value of the polymerization inhibitor A1 is tested, and a group of experimental data with low viscosity value change and the minimum addition amount of the polymerization inhibitor is found out, so that the type and the optimum addition amount of the polymerization inhibitor needed by the company are determined, and the polymerization inhibitor A1 is added into the active diluent and the oligomer.

According to the mode, the invention finds a BHT polymerization inhibitor which is named as 2, 6-di-tert-butyl-p-cresol.

Selection of reactive diluents:

HEMA is one of the most widely used hydroxyl functional methacrylic acid active monomers in the nail polish glue industry, and has the characteristics of high curing speed, small smell, good glossiness, moderate hardness, low price and the like. SCCS (european union consumer safety science committee) however, indicates that HEMA is a weak to moderate allergenic substance that poses sensitization risks in cases of abuse, misuse or contact with the skin around the nail cover when used under normal and reasonably foreseeable conditions. In the evaluation of "use under normal and reasonably predictable conditions", abuse, misuse or misuse situations that may occur must also be taken into account in the evaluation. Meanwhile, if the product needs to be matched with accurate conditions for use, the condition of not being accurate enough needs to be considered. SCCS considers that the use of a nail product containing a HEMA component by ordinary consumers should take into account the possibility of contacting the skin around the nail cover, with the risk of human health. The professional has more skill, experience and knowledge in cosmetic use than the ordinary consumer, and is safer when using the nail product containing the HEMA component.

Based on the above considerations, HEMA is only used by professional persons when used for nail products, and needs to add a specific warning slogan 'which is only used by professional persons and causes allergic reaction'. 2-hydroxyethyl methacrylate (HEMA, CAS number 868-77-9) was also approved by the European Committee on revision EU 2020/1682 on 12.11.2020, as a cosmetic limiting substance, and is only used by professional nail products. HEMA is regulated by european union cosmetic code appendix III, clause 313. Products not compliant with the new provisions will be banned from the market in the european union from 6/3/2021 and from the market in the european union from 9/3/2021.

Therefore, HEMA was not considered when choosing a reactive diluent.

Solution of MEHQ content reduction in reactive diluent (low MEHQ reactive diluent preparation):

the content of UV methyl lacquer MEHQ is less than 10ppm according to personal use standards. In most of the products in the market, the content of MEHQ in the active diluent and the oligomer is about 200ppm, so the content of MEHQ in the active diluent can be reduced by the following reduced pressure distillation method

1. In view of the fact that the MEHQ content of commercially available reactive diluents for UV curing reaction is about 200ppm, the object of this experiment was to reduce the MEHQ content of IBOMA (isobornyl methacrylate) and HPMA (hydroxypropyl methacrylate) reactive diluents by distillation under reduced pressure, and to enable the incorporation of the diluent into all reactive diluents.

(1) The data describes the relationship between boiling point and atmospheric pressure for MEHQ, HPMA and IBOMA as follows:

the corresponding relationship between the boiling point of MEHQ and the atmospheric pressure is as follows:

	boiling point	Atmospheric pressure	Mercury column
				MEHQ	223.8°C	101.325kPa	760 mmHg

The relationship between the boiling point of HPMA and the atmospheric pressure is as follows:

	boiling point	Atmospheric pressure	Mercury column
				HPMA	96℃	1.33kPa	9.9758204mmHg
HPMA	209.4℃	101.325kPa	760 mmHg
				HPMA	57℃	66.7Pa	0.50029114mmHg

The correspondence between the IBOMA boiling point and the atmospheric pressure is as follows:

	boiling point	Atmospheric pressure	Mercury column
				IBOMA	120℃	800pa	6.0004935mmHg
IBOMA	263.1°C	101.325kPa	760 mmHg

According to the data, the following data are estimated:

	boiling point after decompression	Boiling point at atmospheric pressure	Mercury column	Reduced pressure
					MEHQ	50℃	223.8℃	0.7mmHg	93.325pa
HPMA	42℃	209.4℃	0.7mmHg	93.325pa
					IBOMA	79℃	263.1℃	0.7mmHg	93.325pa

Accordingly, IBOMA and HPMA rectification products were obtained by vacuum distillation while controlling the pressure at 93.325 Pa.

1. The specific operation method of IBOMA rectification is as follows: adding IBOMA liquid to be distilled into a double-neck distillation flask to 1/2 of the volume of the flask, closing a piston on a safety bottle, adjusting the pressure in the distillation flask to 93.325pa by using an oil pump, starting heating by using an oil bath after the pressure is stabilized, controlling the temperature of a hot bath at 55 ℃, preferably controlling the distillation speed to be 0.5-1 drop/second, and keeping the pressure and the temperature until the distillation is finished to obtain the IBOMA with extremely low or even no MEHQ content in the distillation flask. After distillation, removing the heat source, opening the screw clamp of the rubber tube on the capillary, slowly opening the piston on the safety bottle, balancing the internal and external pressure, and finally closing the air pump.

2. The specific operation method of HPMA rectification is as follows: adding HPMA into a double-neck distillation flask until the liquid to be distilled reaches 1/2 of the volume of the flask, closing a piston on a safety bottle, adjusting the pressure in the distillation flask to 93.325pa by using an oil pump, starting heating by using an oil bath after the pressure is stabilized, controlling the temperature of a hot bath at 45 ℃, preferably controlling the distillation speed to be 0.5-1 drop/second, keeping the pressure and the temperature constant until the distillation is finished, and obtaining the HPMA with extremely low or even no MEHQ content in a receiver. After distillation, removing the heat source, opening the screw clamp of the rubber tube on the capillary, slowly opening the piston on the safety bottle, balancing the internal and external pressure, and finally closing the air pump.

2, 6-di-tert-butyl-p-cresol (BHT polymerization inhibitor) which is screened is added before vacuum distillation in order to prevent the product from polymerizing in the rectification process.

Through the reduced pressure distillation mode, monomers such as PEGDA (polyethylene glycol diacrylate), PEGDMA (polyethylene glycol dimethacrylate), PEGD400MA, PEGD400A and the like can be obtained through rectification.

Synthesis of oligomer PUA:

the advantage of the choice of the blocking agent required for the synthesis of oligomeric PUA, of the hydroxyl-functional methacrylate-type reactive monomers (e.g.HPMA, HEMA) over the choice of the hydroxyl-functional acrylate-type monomers (e.g.HPA, HEA), is:

the hydroxyl functional acrylate active monomer containing methyl has the advantages of more stable property than hydroxyl functional acrylate due to the existence of methyl, such as better hydrolysis resistance, better optical stability, more difficult double bond rotation, increased molecular weight, reduced volatilization rate, reduced anaphylaxis, better toughness, better wear resistance and reduced irritation.

Although the HEMA can not be used as a reactive diluent in personal methyl oil gel, the HEMA can be used as an end-capping agent of resin to participate in the synthesis of the resin, and the HEMA content in the system after the reaction is finished is very low or even none.

Thus, oligomer PUA with hydroxyl-functionalized methacrylate-based reactive monomers (HPMA, HEMA, etc.) as blocking agents was chosen.

The polyurethane acrylate consists of dihydric alcohol, isocyanate, a blocking agent, a catalyst and a polymerization inhibitor; wherein:

the isocyanate is one of the following: IPDI CAS No 4098-71-9 Isophorone diisocyanate, H₁₂MDI CAS No5124-30-1 dicyclohexylmethane-4, 4-diisocyanate, HDI CAS No 822-06-0 hexamethylene diisocyanate.

The dihydric alcohol is one of the following: polytetrahydrofuran and copolyether glycols thereof, polytetrahydrofuran glycol (PTMEG) CASNo: 25190-06-01,24979-97-3. Polybutylene adipate diol CAS No25103-87-1, polydiethylene adipate diol CAS No27925-07-1, polyhexamethylene adipate diol CAS No25212-06-0, polyethylenepropylene adipate diol CAS No26523-14-8, polydiethylene adipate diol CAS No25214-18-0, polytetramethylene adipate hexanediol CAS No25214-15-7, polyhexamethylene adipate neopentyl glycol CAS No25214-14-6, polycarbonic acid-1.6-hexanediol CAS No101325-00-2, polycarbonic acid cyclohexane dimethanol-1.6-hexanediol diol CAS No216691-97-3, polycarbonic acid-1.5-pentanediol-1.6-hexanediol CAS No 459-81-5, 1.4-butanediol-1.6-hexanediol polycarbonate CAS No149295-53-4, BDO polycaprolactone diol CAS No331831-53-5, NPG polycaprolactone diol CAS No69089-45-8, HDO polycaprolactone diol CAS No36609-29-7 L205AL.L208AL.L212AL.L220AL.L220PM.230AL.220NPI and other polycaprolactone CAS No86630-69-5, PTXG-1000, PDA-2000, PEDA-2000B and PETA-2000.

The end-capping agent is a methacrylate functionalized by hydroxyl; can be HPMA CAS NO 26099-09-02, HEMA CAS NO 868-77-9.

The catalyst comprises the following components: dibutyltin dilaurate, tetrabutylammonium bromide, triethylamine or triphenylphosphine were used.

The reaction route for synthesizing the polyurethane acrylate (PUA) comprises the following steps: diol is reacted with isocyanate to synthesize NCO-terminated polyurethane prepolymer, which is then reacted with hydroxyl-functionalized methacrylate to introduce methacryloxy. The preparation method comprises the following steps:

(1) firstly, adding dihydric alcohol into a four-neck flask provided with a mechanical stirring device, a thermometer and a vacuum device, and dehydrating for 1h at the temperature of 110 ℃ and the vacuum degree of 0.88 MPa;

(2) reducing the temperature of the dehydrated dihydric alcohol material to 65 ℃, keeping the temperature constant, adding isocyanate (the molar ratio of the glycol to the isocyanate is 1: 1) in a titration mode, and continuing to react for 1.5h after the titration is finished;

(3) reducing the temperature to 60 ℃, then adding a blocking agent, adding 2, 6-di-tert-butyl-p-cresol (BHT polymerization inhibitor) and a catalyst into a four-neck flask, reacting at a constant temperature, and stopping the reaction when the NCO content is reduced to below 0.1%;

(4) finally, the UV-cured resin with low MEHQ content and low skin irritation is prepared.

The UV curable resins synthesized by the present inventors through the above manner have been subjected to related certifications on INCI and CAS No by replacing different types of the above isocyanates, diols, and blocking agents to prepare different functional light curable resins, and specific types are LT2010, LT2012, LT2013, LT2015, LT2016, LT2017, LT2018, LT2019, LT2020, LT2021, LT2022, LT2023, LT2024, LT2025, LT2026, and LT 2027. The method comprises the following specific steps:

trade name	CAS number	Name of Chinese
			LT2010	2134562-92-6	Bis-hydroxyethyl methacrylate (1, 4-butanediol-1, 6-hexanediol polycarbonate) -/isophorone diisocyanate copolymer
LT2012	2123611-93-6	Bis-hydroxyethyl methacrylate (poly-epsilon-caprolactone-neopentyl glycol ester diol) -/isophorone diisocyanate copolymer
			LT2013	2134098-86-3	Bis-hydroxyethyl methacrylate (polytetrahydrofuran diol) -/isophorone diisocyanate copolymer
LT2015	2134562-93-7	Bis-hydroxyethyl methacrylate (poly-1, 4-butanediol adipate-diol) -/isophorone diisocyanate copolymer
			LT2016	2134562-94-8	bis-HPMA (Poly (trimethylene adipate) glycol) -/isophorone diisocyanate copolymer
LT2017	2134562-95-9	Bis-hydroxyethyl methacrylate (poly-3-methyl-1, 5-pentanediol adipate) -/isophorone diisocyanate copolymer
			LT2018	2139340-54-6	Bis-hydroxyethyl methacrylate (poly-epsilon-caprolactone-1, 4-butanediol ester diol) -/isophorone diisocyanate copolymer
LT2020	2139340-35-3	Bis-hydroxyethyl methacrylate (poly (1, 5-pentanediol-1, 6-hexanediol) diol) -/isophorone diisocyanate copolymer
			LT2021	2389147-80-0	Bis-hydroxyethyl methacrylate (poly neopentyl glycol-tetrahydrofuran ether glycol) -/isophorone diisocyanate copolymer
LT2022	2389147-81-1	Bis-hydroxyethyl methacrylate (poly (diethylene glycol adipate glycol) -/isophorone diisocyanate copolymer
			LT2023	2389129-40-0	Bis-hydroxyethyl methacrylate (poly (ethylene glycol-diethylene glycol ester diol) -/isophorone diisocyanate copolymer
LT2024	2389147-82-2	Bis-hydroxyethyl methacrylate (poly (ethylene glycol-trimethylolpropane ester diol))/isophorone diisocyanate copolymer
			LT2025	2389147-83-3	Bis-hydroxyethyl methacrylate (poly-epsilon-caprolactone-1, 6-hexanediol) -/isophorone diisocyanate copolymer
LT2026	2389147-84-4	Bis-hydroxyethyl methacrylate (poly-epsilon-caprolactone-diglycol ester diol) -/isophorone diisocyanate copolymer
			LT2027	2389147-85-5	Bis-hydroxyethyl methacrylate (poly (1, 4-cyclohexanedimethanol-1, 6-hexanediol) diol)/isophorone diisocyanate copolymer

The nail polish gel prepared by screening the photoinitiator, distilling the active diluent under reduced pressure and selecting the end-capping agent synthetic resin with low skin irritation through the obtained materials can meet the use requirements of individuals using UV phototherapy nail polish gel and meet the individual use standards of European Union.

LT 201035-45 parts

LT 201827-37 parts

25-35 parts of HPMA

1841-4 parts

TPO-L1-4 parts

0.1-0.5 part of BYK-333 leveling agent.

The primer formula takes HPMA as a diluent monomer, and mainly has the effects of reducing curing shrinkage, increasing film-forming property and improving adhesive force by matching with LT2010 and LT2018 oligomers, and finally promoting deep curing and complete surface curing by using a photoinitiator matched with TPO-L and 184.

In the preferred embodiment, the primer comprises the following components in parts by weight:

LT 201040 parts

LT2018 32

30 portions of HPMA

1843.5 parts

TPO-L3 parts

0.3 part of BYK-333 leveling agent.

LT 202138-48 parts

LT 201313-23 parts

20-30 parts of PEG400DA 20

5-15 parts of HPMA

1841-4 parts

8190.1-3 parts

TPO-L1-4 parts

0.2-0.5 part of BYK-333 leveling agent

0.1 to 2 portions of color paste

0.1-1.6 parts of R974 anti-settling agent.

The color paste uses PEG400DA monomer to increase curing speed, and the crosslinking density is improved while the brittleness after film forming is not too poor, HPMA is helpful to improve the wetting dispersibility of the pigment, high-efficiency photoinitiator 819 and TPO are matched to compete with the pigment to absorb light to promote deep curing to be complete, and finally R974 anti-settling agent is added to ensure that the color paste is dispersed stably and prevent settling.

In the preferred embodiment, the color glue comprises the following components in parts by weight:

LT 202143 parts

LT 201318 parts

PEG400DA 25 part

10 portions of HPMA

1843 parts of

8192 parts

TPO-L3 parts

0.3 part of BYK-333 leveling agent

Color paste 1 part

And 1.2 parts of R974 anti-settling agent.

LT 201037-47 parts

LT 201520-30 parts

13-23 parts of PEGDMA

10-20 parts of HPMA

TPO-L3-5 parts

0.1-0.5 part of BYK-333 leveling agent.

The sealing layer is a scrubbing formula, so that the problem of surface oxygen inhibition can be avoided, a TPO-L initiator is added to promote the bottom layer to be completely cured, the PEGDMA with good glossiness, the LT2010 and the LT2015 are matched, and the formula toughness is improved by the HPMA.

In the preferred embodiment, the seal layer comprises the following components in parts by weight:

LT 201042 parts

LT 201523 part

PEGDMA 18 parts

HPMA 15 parts

TPO-L4 parts

0.3 part of BYK-333 leveling agent.

In conclusion, the nail polish gel meeting the use standard of European Union individuals eliminates TPO and MEHQ which are harmful substances to human bodies, and active diluents with low skin irritation to the human bodies, does not use HEMA which is an active diluent, and selects PUA with low skin irritation, thereby reducing allergic factors to the human bodies and ensuring the use safety of individuals. The nail polish gel has the advantages of easy operation, low irritation, long retention time, wide application range, safety and the like.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims

1. A nail polish gel meeting the use standard of European Union individuals is characterized in that the raw materials of the nail polish gel comprise an oligomer, a photoinitiator and a reactive diluent which is treated by reduced pressure distillation;

the oligomer is urethane acrylate;

2. A nail polish gel according to the eu personal use standards according to claim 1, wherein: the polyurethane acrylate is composed of dihydric alcohol, isocyanate, a blocking agent, a catalyst and a polymerization inhibitor.

3. A nail polish gel according to the eu personal use standards according to claim 2, wherein: the isocyanate is isophorone diisocyanate, dicyclohexylmethane-4, 4-diisocyanate or hexamethylene diisocyanate.

4. A nail polish gel according to the eu personal use standards according to claim 2, wherein: the catalyst is dibutyltin dilaurate, tetrabutylammonium bromide, triethylamine or triphenylphosphine.

5. A nail polish gel according to the eu personal use standards according to claim 2, wherein: the end-capping agent is a methacrylate functionalized with hydroxyl groups.

6. A nail polish gel according to the eu personal use standards according to claim 2, wherein: the dihydric alcohol is polytetrahydrofuran and copolyether glycol thereof, polytetrahydrofuran diol, polybutylene adipate diol, polyethylene glycol adipate diol, polyhexamethylene glycol adipate diol, polyethylene glycol propylene glycol adipate diol, polyethylene glycol adipate diol, polybutylene glycol adipate diol, polyethylene glycol neopentyl glycol adipate diol, 1.6-hexanediol polycarbonate diol, cyclohexane dimethanol-1.6-hexanediol polycarbonate diol, 1.5-pentanediol-1.6-hexanediol polycarbonate diol, 1.4-butanediol-1.6-hexanediol polycarbonate diol, polycaprolactone diol or polycaprolactone diol.

7. A nail polish gel according to the eu personal use standards according to claim 2, wherein: the polymerization inhibitor is 2, 6-di-tert-butyl-p-cresol.

8. A nail polish gel according to the eu personal use standards according to claim 1, wherein: the nail polish glue is used for preparing a primer, and the primer comprises the following components in parts by mass:

LT 201035-45 parts

LT 201827-37 parts

25-35 parts of HPMA

1-4 parts of 184 photoinitiator

TPO-L photoinitiator 1-4 parts

0.1-0.5 part of BYK-333 leveling agent.

9. A nail polish gel according to the eu personal use standards according to claim 1, wherein: the nail polish gel is used for preparing a color gel, and the color gel comprises the following components in parts by weight:

LT 202138-48 parts

LT 201313-23 parts

20-30 parts of PEG400DA 20

5-15 parts of HPMA

1-4 parts of 184 photoinitiator

819 parts of photoinitiator 0.1-3

TPO-L photoinitiator 1-4 parts

0.2-0.5 part of BYK-333 leveling agent

0.1 to 2 portions of color paste

0.1-1.6 parts of R974 anti-settling agent.

10. A nail polish gel according to the eu personal use standards according to claim 1, wherein: the nail polish glue is used for preparing a sealing layer, and the sealing layer comprises the following components in parts by mass:

LT 201037-47 parts

LT 201520-30 parts

13-23 parts of PEGDMA

10-20 parts of HPMA

3-5 parts of TPO-L photoinitiator

0.1-0.5 part of BYK-333 leveling agent.