Search

CN-122005892-A - Low-odor urine-displaying glue, preparation method thereof and product comprising urine-displaying glue

CN122005892ACN 122005892 ACN122005892 ACN 122005892ACN-122005892-A

Abstract

The invention discloses a low-odor urine-displaying glue, a preparation method thereof and a product comprising the urine-displaying glue, which relate to the technical field of high polymer materials for absorbing pads and the like, wherein the urine-displaying glue is prepared from the following components, by mass, 1-10% of liquid polybutadiene rubber, 1-10% of polymer SEPS, 10-30% of plasticizer, 20-70% of tackifying resin, 3-25% of surfactant, 0.01-4% of dye and 0.1-6% of ultraviolet absorbent, and the sum of the mass percentages of the components is 100%. The urine display glue has low odor, the color before and after meeting water is not affected by ultraviolet rays, the invalidation of a color developing agent is effectively avoided, and the urine display glue has no fluorescent effect and can be applied to disposable sanitary products such as baby diapers, pet diapers, adult incontinence products and the like.

Inventors

  • YU JUNLIANG
  • WEI BAOPING
  • CAO SHAOBO
  • WU YONGSHENG

Assignees

  • 佛山南宝高盛高新材料股份有限公司

Dates

Publication Date
20260512
Application Date
20260407

Claims (10)

  1. 1. The low-odor urine-developing adhesive is characterized by comprising, by mass, 1-10% of liquid polybutadiene rubber, 1-10% of polymer SEPS, 10-30% of plasticizer, 20-70% of tackifying resin, 3-25% of surfactant, 0.01-4% of dye and 0.1-6% of ultraviolet absorber, wherein the sum of the mass percentages of the components is 100%; The dye comprises a first dye selected from one or more than two of 3- (1, 2-dimethyl-3-indolyl) -3- [ 4-diethylamino-2-methylphenyl ] phthalide, 3-bis (2-diethoxy-4-N, N-diethylaminophenyl) -4-azaphthalide, 6- [ ethyl (4-methylphenyl) amino ] -3' -methyl-2 ' - (phenylamino) -spiro [ isobenzofuran-1 (3H), 9' - (9H) xanthen ] -3-one, 7- [4- (diethylamino) -2- (hexyloxy) phenyl ] -7- (1-ethyl-2-methyl-1H-indol-3-yl) furo [3,4-B ] pyridin-5 (7H) -one; the ultraviolet absorbent is prepared by compounding 2- (2 '-hydroxy-5' -methylphenyl) benzotriazole or 2- (-hydroxy-3-tert-butyl-5 '-methylphenyl) -5-chlorobenzotriazole and 2- (2' -hydroxy-3 ',5' -di-tert-pentylphenyl) benzotriazole according to a mass ratio of 1 (0.5-4).
  2. 2. The low-odor urine-developing adhesive according to claim 1, which is prepared from 3 to 8 mass percent of liquid polybutadiene rubber, 2 to 6 mass percent of polymer SEPS, 15 to 25 mass percent of plasticizer, 40 to 60 mass percent of tackifying resin, 5 to 20 mass percent of surfactant, 0.1 to 3 mass percent of dye and 0.5 to 4 mass percent of ultraviolet absorbent, wherein the sum of the mass percent of the components is 100 percent.
  3. 3. The low-odor urine-developing adhesive according to claim 1, which is prepared from the following components, by mass, 5-6% of liquid polybutadiene rubber, 3-4% of polymer SEPS, 18-22% of plasticizer, 45-55% of tackifying resin, 10-15% of surfactant, 2-3% of dye, and 1.5-3.5% of ultraviolet absorber, wherein the sum of the mass percentages of the components is 100%.
  4. 4. The low odor urine display rubber according to any one of claims 1 to 3, wherein said liquid polybutadiene rubber is a low molecular weight polybutadiene having no functional group at the end or containing a small amount of functional groups, selected from the group consisting of marks HB40, HBD40 of the division of chinese petrochemical company, inc; The polymer SEPS is selected from polymer SEPS with molecular weight of 60000-105000 and styrene content of 28-35%, and is selected from marks 4051 and 4052 of Hunan chemical industry Co., ltd.
  5. 5. The low odor urine-developing adhesive according to claim 1 to 3, wherein said plasticizer is one or a mixture of two or more selected from the group consisting of paraffin-based rubber oil, cycloalkyl-based rubber oil and aromatic-based rubber oil, and said tackifying resin is one or a mixture of two or more selected from the group consisting of hydrogenated petroleum resin and hydrogenated rosin resin.
  6. 6. The low-odor urine-developing adhesive according to any one of claims 1 to 3, wherein the surfactant is one or a mixture of two or more of a nonionic surfactant and an anionic surfactant, the nonionic surfactant is one or a mixture of two or more of a condensate of fatty alcohol and ethylene oxide and sorbitan monooleate, the anionic surfactant is one or a mixture of two or more of sodium dodecyl benzene sulfonate and sodium dodecyl sulfate, and when the surfactant is a mixture of the nonionic surfactant and the anionic surfactant, the nonionic surfactant and the anionic surfactant are compounded in a mass ratio of 1 (2-4).
  7. 7. A low odor urine display glue according to any of claims 1-3, further comprising a second dye selected from one or a mixture of more than two of solvent orange 54, solvent orange 99, solvent red 89, solvent orange 62, solvent orange 116, said first dye and second dye being compounded in a mass ratio of (40-60): 1.
  8. 8. A low odor urine-based adhesive according to any of claims 1-3, further comprising 0.1-2% by mass of an antioxidant.
  9. 9. A method for preparing a low odor urine-based adhesive according to any one of claims 1 to 8, comprising the steps of: s1, confirming that a bottom valve of a reaction kettle is closed, opening steam for heating, starting a stirring paddle, and adding a formula amount of plasticizer and surfactant; s2, raising the temperature of the reaction kettle of the step S1 to 140-155 ℃, adding the polymer SEPS with the formula amount, and stirring until the polymer is melted; s3, adding the dye with the formula amount into the reaction kettle of the S2, and fully mixing the dye after the dye is completely melted; S4, adding a formula amount of tackifying resin into the reaction kettle of the S3, and adding a formula amount of liquid polybutadiene rubber to fully mix after the tackifying resin is completely melted; S5, adding the ultraviolet absorbent with the formula amount into the reaction kettle in the S4, and fully mixing the ultraviolet absorbent after the ultraviolet absorbent is completely melted; S6, filtering the molten materials in the reaction kettle after vacuumizing and continuously stirring for 1h in the step S5; and S7, sequentially passing the filtered molten material in the step S6 through a cooling system and a drying system to finally obtain the low-odor urine display glue.
  10. 10. A disposable absorbent article comprising a first substrate and the low odor urine display adhesive of any one of claims 1-8 disposed on said first substrate, wherein the article is selected from the group consisting of a baby diaper, a pet diaper, and an adult incontinence product.

Description

Low-odor urine-displaying glue, preparation method thereof and product comprising urine-displaying glue Technical Field The invention relates to the technical field of high polymer materials for absorbent pads and the like, in particular to a low-odor hot melt adhesive capable of developing color after being wet in urine, a preparation method thereof and a product comprising the same. Background With the increasing market demand for diapers, diapers have generally replaced conventional diapers and are widely applied to infants and adult incontinents. The paper diaper on the current market has stronger liquid absorption capability, the paper diaper is not easy to find in time after being wet by urine, however, the paper diaper after being wet is easy to cause skin allergy of a user (infants, adult incontinent persons and the like) in a wet environment when being continuously used, so that the timely replacement of the paper diaper is very important, otherwise, the paper diaper is easy to cause skin allergy of infants in a wet environment. The urine wet color-developing hot melt adhesive is a hot melt adhesive which changes color when encountering liquid such as urine, and directly reacts to the urine condition through the color change, so that a user can know whether disposable sanitary products such as urine pads, paper diapers and the like need to be replaced or not through visual inspection, and the user does not need to judge through hand touch. The existing urine display glue is usually added with color developers (such as bromocresol green, bromophenol blue or bromocresol purple), and after the color developers are contacted with water, the color developers can change from a first color (such as yellow) to a second color (such as green) due to the change of pH, so that obvious color change can be rapidly generated, and the accurate requirement of products such as paper diapers and the like on humidity visualization can be met. Specifically, the urine display glue disclosed in patent number ZL201310108779.4 is the first urine display glue independently developed by the inventor. However, the urine display adhesive still has the following defects in practical application: 1. The existing bromophenol blue, bromocresol green, bromocresol purple and the like used as color developers or the existing rosin plasticizers and the like have heavier smell and are not suitable for the application requirements of paper diapers such as infants and the like sensitive to smell. 2. Meanwhile, the existing urine display glue lacks an ultraviolet resistance function, so that the paper diaper is not packaged in time in the actual paper diaper production process, changes color after encountering water vapor, then is discolored after being irradiated by ultraviolet rays, and completely loses the function of a color developing agent, so that once the paper diaper with the failure urine display flows into the market, the public praise of the whole industry and the credit of a merchant are greatly influenced. Therefore, it is necessary to develop a urine display glue which has low odor and a function of preventing losing display. Disclosure of Invention In order to overcome the defects in the prior art, one of the purposes of the invention is to provide a low-odor urine display adhesive. The second purpose of the invention is to provide a preparation method of the low-odor urine display glue. It is a further object of the present invention to provide a disposable absorbent article comprising a low odor urine-developing adhesive. The low-odor urine-displaying glue is prepared from the following components, by mass, 1-10% of liquid polybutadiene rubber, 1-10% of polymer SEPS, 10-30% of plasticizer, 20-70% of tackifying resin, 3-25% of surfactant, 0.01-4% of dye and 0.1-6% of ultraviolet absorbent, wherein the sum of the mass percentages of the components is 100%; The dye comprises a first dye selected from one or more than two of 3- (1, 2-dimethyl-3-indolyl) -3- [ 4-diethylamino-2-methylphenyl ] phthalide, 3-bis (2-diethoxy-4-N, N-diethylaminophenyl) -4-azaphthalide, 6- [ ethyl (4-methylphenyl) amino ] -3' -methyl-2 ' - (phenylamino) -spiro [ isobenzofuran-1 (3H), 9' - (9H) xanthen ] -3-one, 7- [4- (diethylamino) -2- (hexyloxy) phenyl ] -7- (1-ethyl-2-methyl-1H-indol-3-yl) furo [3,4-B ] pyridin-5 (7H) -one; the ultraviolet absorbent is prepared by compounding 2- (2 '-hydroxy-5' -methylphenyl) benzotriazole or 2- (-hydroxy-3-tert-butyl-5 '-methylphenyl) -5-chlorobenzotriazole and 2- (2' -hydroxy-3 ',5' -di-tert-pentylphenyl) benzotriazole according to a mass ratio of 1 (0.5-4). Further, the low-odor urine-developing adhesive is prepared from the following components, by mass, 3-8% of liquid polybutadiene rubber, 2-6% of polymer SEPS, 15-25% of plasticizer, 40-60% of tackifying resin, 5-20% of surfactant, 0.1-3% of dye and 0.5-4% of ultraviolet absorber, wherein the sum of the components is 100%. Further, the low-odor urine-develop