WO2024076228A1 - Composition anti-pégosité et procédé de production d'un article élastomère sans poudre non pégueux - Google Patents

Composition anti-pégosité et procédé de production d'un article élastomère sans poudre non pégueux Download PDF

Info

Publication number
WO2024076228A1
WO2024076228A1 PCT/MY2023/050079 MY2023050079W WO2024076228A1 WO 2024076228 A1 WO2024076228 A1 WO 2024076228A1 MY 2023050079 W MY2023050079 W MY 2023050079W WO 2024076228 A1 WO2024076228 A1 WO 2024076228A1
Authority
WO
WIPO (PCT)
Prior art keywords
tack
elastomeric article
tacky powder
free elastomeric
composition
Prior art date
Application number
PCT/MY2023/050079
Other languages
English (en)
Other versions
WO2024076228A4 (fr
Inventor
Kok Ho TEE
Original Assignee
Ci Technology Sdn Bhd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Ci Technology Sdn Bhd filed Critical Ci Technology Sdn Bhd
Publication of WO2024076228A1 publication Critical patent/WO2024076228A1/fr
Publication of WO2024076228A4 publication Critical patent/WO2024076228A4/fr

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J7/00—Chemical treatment or coating of shaped articles made of macromolecular substances
    • C08J7/04—Coating
    • C08J7/06—Coating with compositions not containing macromolecular substances
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
    • A61L31/00—Materials for other surgical articles, e.g. stents, stent-grafts, shunts, surgical drapes, guide wires, materials for adhesion prevention, occluding devices, surgical gloves, tissue fixation devices
    • A61L31/04—Macromolecular materials
    • A61L31/048—Macromolecular materials obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • A61L31/049—Rubbers
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
    • C09D7/40—Additives
    • C09D7/60—Additives non-macromolecular
    • C09D7/61—Additives non-macromolecular inorganic
    • C09D7/62—Additives non-macromolecular inorganic modified by treatment with other compounds
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
    • C09D7/40—Additives
    • C09D7/66—Additives characterised by particle size
    • C09D7/68—Particle size between 100-1000 nm
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
    • C09D7/40—Additives
    • C09D7/66—Additives characterised by particle size
    • C09D7/69—Particle size larger than 1000 nm
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2321/00—Characterised by the use of unspecified rubbers
    • C08J2321/02—Latex
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/34—Silicon-containing compounds
    • C08K3/346—Clay
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K9/00—Use of pretreated ingredients
    • C08K9/04—Ingredients treated with organic substances

Definitions

  • the present invention relates to anti-tack coating for an elastomeric article, particularly an anti-tack composition and a method for producing a non- tacky powder-free elastomeric article.
  • the extent of stickiness or tackiness of a synthetic or natural rubber relate to the number of unsaturated molecules. High number of unsaturated molecules results in more tackiness, and vice versa.
  • the problem of tackiness in the thin rubber articles like dipped rubber causes poor donnability which then leads to unusable condition or uncomfortable when in use.
  • the tackiness inside the glove results in shrinking of the glove and causes difficulty in opening up the glove and put on the hands.
  • the outer tackiness of the glove results in sticking of the gloves when stacking and may lead to uncomfortable finger movement due to high friction between fingers caused by tackiness.
  • USP grade corn starch has been applied in a slurry form after curing and post-leaching for acting as an anti-tacking agent to avoid sticking inside the glove and ease the donning. It is known that corn starch carries natural protein. In the case of the natural rubber glove applied with the corn starch, corn starch dust tends to be released in the air and consequently create allergic reactions to the people that are allergic to the natural protein. Another disadvantage of using corn starch is the wearer’s hand will be coated with powder and messy. As for outer surface of the glove, calcium carbonate powder and metallic stearates salt are applied in the nitrile glove production to resolve the tackiness issue. Besides, off line chlorination is also being applied to remove sticking tendency on outer surface of the glove.
  • W02002032475A2 discloses a method of making a non-tacky powder- free neoprene article by dipping a former in a neoprene or neoprene copolymer latex comprises one or more anionic anti-tack to prevent any significant development of tack for a period of up to at least seven days when the article is stored at 70°C or at least 90 days when stored at 45°C, wherein the anti-tack is included in a latex formulation prior to formation of the article or, alternatively, or in addition, the article is washed in a solution of anti-tack agent after the article has been formed.
  • the prior art uses non-biodegradable synthetic materials for polymer coating. Further, the polymer coating will bind to the base neoprene elastomer and thus may influence film properties.
  • US5178676A discloses an anti-tack composition and a method of reducing the tack of uncured rubber compounds.
  • the method comprises a step contacting the surface of the uncured rubber with the anti-tack composition consisting essentially kaolin clay and a non-ionic surfactant via spraying for at least 5 seconds to provide a coating pickup value of said composition of 2.0% or less by weight.
  • Applying anti-tack coat via spraying can maintain high quality finish.
  • the anti-tack coat can easily be contaminated by the air contaminants.
  • US20030138579A1 discloses an article comprising a two-side treated formed rubber article and a process of making thereof.
  • the method comprises the steps of immersing a glove former in an aqueous polymer composition, immersing the glove former in a coagulant to produce a coated former, immersing the coated former into a rubber latex, chlorinating the latex on the coated former, curing the chlorinated latex and removing the finished article from the former.
  • the prior art combines polymer coating and chlorination to produce a powder-free glove with less tacky as well as good donnability and anti-blocking.
  • the high consumption of synthetic polymer materials and chlorine are not environmentally friendly. Further, the large amount of the synthetic polymer materials and chlorine create chemical reaction with the latex film which leads to damage of the latex film.
  • the present invention discloses a method or producing a non-tacky powder-free elastomeric article, the method characterized by the steps of dipping a latex film in a solution comprising antitack particles after a pre-leaching process, curing the latex film to entrap the anti-tack particles in the surface of the latex film for producing the non-tacky elastomeric article, wherein the anti-tack particles comprise clay minerals coated by secondary anti-tack materials.
  • the present invention also discloses an anti-tack composition for a non-tacky powder-free elastomeric article, wherein the composition comprising clay mineral, metal salt of fatty acid and surfactant, optionally starch, wax, silicone, thickener or any combinations thereof.
  • Figure 1 is a flow diagram showing a method for producing a non-tacky powder-free elastomeric article in accordance with an embodiment of the present invention
  • Figure 2 is a diagram illustrating the anti-tack coated film structure produced by dip coating in accordance with a preferred embodiment of the present invention
  • Figure 3 is a diagram illustrating the anti-tack and polymer coated film structure produced by dip coating followed by polymer coating in accordance with a second embodiment of the present invention
  • Figure 4 is a diagram illustrating the anti-tack and chlorine coated film structure produced by dip coating followed by chlorination in accordance with a third embodiment of the present invention.
  • Figure 5 is a diagram illustrating the anti-tack, polymer and chlorine coated film structure produced by dip coating followed by polymer coating and chlorination in accordance with a fifth embodiment of the present invention.
  • compositions or an element or a group of elements are preceded with the transitional phrase “comprising”, it is understood that we also contemplate the same composition, element or group of elements with transitional phrases “consisting of”, “consisting”, “selected from the group of consisting of, “including”, or “is” preceding the recitation of the composition, element or group of elements and vice versa.
  • Figure 1 is a flow diagram showing the method (100) for producing a non-tacky powder-free elastomeric article in accordance to an embodiment of the present invention.
  • the method (100) comprises conventional steps in the elastomeric article production process, the conventional steps include cleaning a former, drying the former, dipping the former in coagulant, drying the former with coagulant, dipping the former into a latex compound to obtain a latex film, gelling the latex film, optionally repeating the dipping and gelling, pre-leaching, beading, curing the latex film, post-leaching, drying and stripping.
  • the distinctiveness of the method (100) for producing the non-tacky powder-free elastomeric article lies on dipping the latex film in a solution comprising antitack particles (102) after the pre-leaching, curing the latex film to entrap the anti-tack particles in the surface of the latex film for producing the non-tacky elastomeric article, wherein the anti-tack particles comprise clay minerals. More specifically, the clay minerals are further coated by secondary anti-tack materials comprised of metal salt of fatty acid and surfactant, optionally, starch, wax, silicone, thickener or any combinations thereof.
  • the coating of secondary anti-tack materials keeps the clay minerals loosely entrapped in the surface of the latex film thereby preventing the clay minerals from attaching themselves with the latex film.
  • the anti-tack particles are partially or fully entrapped in the outer surface of the latex film.
  • the anti-tack particles get trapped in the surface of the latex film during curing.
  • the method of the present invention ensures the adherence of the antitack particles to the latex film using the curing characteristics of the latex film.
  • the anti-tack coating is not reacting with the latex film and thus making the anti-tack coating washable. Due to the anti-tack particles are entrapped in the surface of the latex film during curing, the anti-tack property is able to be retained even after washing in post-leaching.
  • the method (100) for producing the non-tacky powder-free elastomeric article further comprises subjecting the latex film to polymer coating (104) after antitack dipping (102) and prior to beading and curing, wherein polymer coating comprises polyacrylic, polyurethane, polyacrylate, poly-styrene acrylate or any combinations thereof, in a concentration of 0.01 to 8.0% w/v.
  • the method (100) for producing the non-tacky powder-free elastomeric article further comprises the step of subjecting the latex film to chlorination (106) after anti-tack dipping, beading and curing, wherein the chlorination comprises chlorine with a concentration less than 500 ppm.
  • the latex film can be subjected to cooling prior to chlorination.
  • the chlorinated latex film can further be subjected to neutralization after chlorination.
  • the method (100) for producing the non-tacky powder-free elastomeric article further comprises the step of subjecting the latex film to a second anti-tack dipping (108) or slurry overcoat after the first anti-tack dipping, beading, curing and post-leaching.
  • the method (100) for producing the non-tacky powder-free elastomeric article further comprise the steps of subjecting the latex film to polymer coating (104) before beading and curing, chlorination (106) after curing and second anti-tack dipping (108) after curing and post-leaching.
  • the present invention also discloses an anti-tack composition for a non- tacky powder-free elastomeric article.
  • the composition comprises clay mineral, metal salt of fatty acid and surfactant.
  • the composition further comprises starch, wax, silicone, thickener or any combinations thereof.
  • the clay mineral is hydrous aluminium phyllosilicates comprise transition metals, alkali metals, alkaline earth metals or any combinations thereof, in a concentration of 0.05 to 5.0% w/v with a particle size less than 15.0 pm so that the particles properly function as anti-tacking agent upon partial encapsulation as well as not hindering the ease of donning. More preferably, the clay mineral is in a concentration of 0.30 to 0.40% w/v with a particle size of 0.1 to 8.0 pm, wherein the clay mineral preferably but is not limited to sodium aluminium silicate base clay mineral.
  • the metal salt of fatty acid comprises metal hydroxide and unsaturated fatty acid, in a concentration of 0.1 to 3.0% w/v. More preferably, the metal salt of fatty acid is in a concentration of 0.5 to 0.6% w/v. More particularly, the metal oxide comprises metal selected from potassium, magnesium, calcium, zinc or any combinations thereof. More particularly, the unsaturated fatty acid comprises caprylic acid, capric acid, lauric acid, myristic acid, palmitic acid, stearic acid, arachidic acid, behenic acid, lignoceric acid, cerotic acid or any combinations thereof.
  • the metal salt of fatty acid preferably but is not limited to calcium stearate and potassium stearate.
  • the surfactant comprises non-ionic surfactant, anionic surfactant or combination thereof, in a concentration of 0.1 to 1.0% w/v. More preferably, the surfactant is anionic surfactant in a concentration of 0.2% w/v, wherein the surfactant preferably but is not limited to sodium laureth sulphate and sodium dodecyl benzene sulphate.
  • the starch is in a concentration of 0.1 to 3.0% w/v. More preferably, the starch is in a concentration of 0.20 to 0.30% w/v.
  • the wax comprises natural wax, synthetic wax or combination thereof, in a concentration of 0.05 to 3.00% w/v. More preferably, the natural wax in a concentration of 0.10 to 0.20% w/v, wherein the natural wax preferably but is not limited to paraffin-based wax and vegetable-based wax.
  • the silicone comprises amino silicone, dow corning silicone, regular dimethicone silicone or any combinations thereof, in a concentration of 0 to 2.0% w/v. More preferably, the silicone is amino silicone in a concentration of 0.05 to 0.50% w/v.
  • the thickener comprises sodium polyacrylate, hydroxyl ethyl cellusose or combination thereof, in a concentration of 0.01 to 0.80% w/v. More preferably, sodium polyacrylate thickener in a concentration of 0.10 to 0.30% w/v.
  • the elastomeric article is a glove having the anti-tack particles coated in the inner surface, wherein the elastomeric article is made up of natural rubber, synthetic rubber, blend of natural and synthetic or blend of various synthetic rubbers.
  • Figure 2 is a diagram illustrating the anti-tack coated film structure produced by dipping the latex film in the solution comprising anti-tack particles (102) in accordance with a preferred embodiment of the present invention.
  • the clay particles are partially and could be fully also encapsulated in the outer surface of the latex film during dipping. If the latex article is a glove, the coating will be presented in the inner surface of the glove at the donning side after stripping from the former.
  • the coating on the clay particles could be comprised of metal salt of fatty acid and surfactants.
  • the coating on the clay particles could also be comprised of starch, wax, silicone and thickener.
  • the non-reactive anti-tack composition of the present invention does not have any capability to react with the latex film.
  • the antitack particles do not form bonding onto the latex film compare to the conventional chlorinated latex film that has a direct chlorine bonding as a result of reaction takes place.
  • the anti-tack composition of the present invention has some physical adhesion of non-permanent nature to get entrapped in the latex film at wet and non-curing state.
  • the anti-tack composition of the present invention gets physically attached and entrapped during curing of the latex film.
  • the anti-tack composition of the present invention is also feasible to be applied to the outer surface of the latex film during coagulant dipping with addition of calcium nitrate.
  • the anti-tack composition of the present invention is not permanently bonded with the latex film. Therefore, the coating could be removed physically by normal cleaning after the glove has been stripped off from the former.
  • Figure 3 is a diagram illustrating the anti-tack and polymer coated film structure produced by dipping the latex film in the solution comprising anti-tack particles (102) followed by polymer coating (104) in accordance with a second embodiment of the present invention.
  • an optional polymer coating could be carried out by applying at low amount of synthetic polymer to form a very thin layer on the surface of the latex film.
  • the non-reactive anti-tack composition acts as a cushion in between the polymer layer and the latex film to obstruct the polymer layer bonds on the latex film.
  • the consumption of synthetic polymeric material could be significantly reduced by applying the anti-tack coating prior to the polymer coating while fulfilling the needs of required anti-tack properties for specific applications.
  • the advantages of this option are low consumption of synthetic polymeric material minimizing the side effect of synthetic polymer, and low adherence or no adherence to the latex film depending on the conditions set by the anti-tack composition.
  • such a weak polymer coating serves as a purpose of one-time donning and non-tackiness during storage of the article.
  • Figure 4 is a diagram illustrating the anti-tack and chlorine coated film structure produced by dipping the latex film in the solution comprising anti-tack particles (102) followed by chlorination (106) in accordance with a third embodiment of the present invention.
  • an optional mild chlorination could be carried out to form a very thin layer on the surface of the latex film.
  • the consumption of chlorine could be significantly reduced by applying the anti-tack coating prior to the chlorination while fulfilling the needs of required anti-tack properties for specific applications.
  • the advantages of this option are low consumption of chlorine gas, low reaction and less coupling of chlorine molecules to the latex film depending on the conditions set by the composition of the anti-tack composition and chlorine concentration in the chlorination bath.
  • a weak chlorination serves as a purpose of one-time donning and non-tackiness during storage of the article.
  • the hybrid form of the anti-tack application compositing the base elastomer with non-reactive anti-tack composition and chlorine rendering space occupied by the clay particles and other non-reactive materials to avoid the attachment of the chlorine molecule on the elastomer surface.
  • Figure 5 is a diagram illustrating the anti-tack, polymer and chlorine coated film structure produced by dipping the latex film in the solution comprising anti-tack particles (102) followed by polymer coating (104) and chlorination (106) in accordance with a fifth embodiment of the present invention.
  • an optional polymer coating (104) could be applied.
  • an optional mild chlorination (106) could be carried out over the polymer coating (104).
  • Table 1 Abbreviation of the chemical components
  • Table 2 Abbreviation of the donning performance rating
  • the anti-tack compositions and the results for 84 sets of experiments are shown in Tables 3 to 1 3.
  • the units given to the chemical components of the anti-tack composition are percentage to the total solution weight of 100 (% w/v).
  • Table 3 shows the anti-tack compositions and results of experiments 1 to 9 with calcium stearate in a concentration from 0.375 to 1 .5% w/v.
  • Experiment 1 and 2 did not comprise clay whereas experiments 3 to 9 comprises clay.
  • Paraffin wax and silicone were present in all the experiments 1 to 9.
  • the results show that elastomeric film in Experiment 5 gave better performance and this could be due to the presence of clay in the anti-tack composition of both first anti-tack coating and the second anti-tack coating.
  • Excess thickener in the first anti-tack coating and excess clay in the second anti-tack coating results in powder mark which is obvious.
  • Table 4 shows the anti-tack compositions and results of experiments 10 to 15. In this set up variations with respect to calcium stearate, wax, silicone and other items were tried. All the results in experiments 10 to 15 were not satisfactory, this could be due to non-presence of clay or less clay. Moreover, the presence of calcium carbonate resulted in very powdery product. These experiments are to be taken as a learning curve for the possible best conditions ahead. Table 5: Results of experiments 16 to 19
  • Table 5 shows the anti-tack compositions and results of experiments 16 to 19. In this set up variations with respect to clay and other chemical components were tried. All the results in experiments 16 to 19 were not satisfactory. The presence of starch resulted in very sticky product. These experiments are to be taken as a learning curve for the possible best conditions ahead.
  • Table 6 shows the anti-tack composition and results of experiments 20 to 25.
  • the donning results were satisfactory for the experiments 20 to 22 and 25 even though there was mild sticky.
  • Experiments 24 and 25 comprise same anti-tack composition in the first coating but different anti-tack composition in the second coating. The results revealed that the elastomeric film in experiment 25 was less sticky and exhibited good donning compared to the elastomeric film in experiment 24.
  • Table 7 Results of experiments 26 to 35
  • Table 7 shows the anti-tack composition and results of experiments 26 to 35.
  • the results of 34 and 35 were very good and distinct change is that amino silicone is not present in these two sets of experiments.
  • starch was present in all sets of experiments in a concentration of 0.3% w/v.
  • the reduction of calcium stearate and clay in experiments 28 and 29 compared to 26 and 27 resulted more sticky and poor donning characteristics.
  • the second coating does not have any effect in experiments 26 to 29.
  • Lutensol did not have any significant effect towards the performance of the elastomeric film.
  • Table 8 shows the anti-tack composition and results of experiments 36 to 45.
  • the anti-tack composition of first coating comprises equal amount of calcium stearate, thickener and surfactant for all sets of experiments.
  • Experiment 37 shows the best result out of all sets of experiments.
  • Table 9 shows the anti-tack composition and results of experiments 46 to 55.
  • Experiment 55 shows the best result out of all sets of experiments.
  • One of the important differences is the use of multiple metallic stearates in combination with the second coating.
  • the result of experiment 47 was satisfactory even without metallic stearate and silicone.
  • Table 1 0 Results of experiments 46 to 64
  • Table 1 0 shows the anti-tack composition and results of experiments 56 to 64. All sets of the experiments comprise starch, surfactant, clay, wax and cellulose type thickener. The results of experiments 60 to 62 shows better performance.
  • Table 1 1 shows the anti-tack composition and results for experiments 65 to 74. All sets of experiments comprise calcium stearate, clay, wax, starch and surfactant. The result of experiment 66 shows the best performance out of all other sets of experiments. Table 1 2: Results of experiments 76 to 84
  • Table 1 2 shows the anti-tack composition and results of experiments 76 to 84. All sets of experiments comprise calcium stearate, wax, clay, starch and surfactant.
  • the polymer coating was applied after first coating in experiments 77, 78 and 82.
  • the chlorination was applied after curing chlorination in experiments 81 to 84.
  • experiment 82 comprises first anti-tack coating, polymer coating, chlorination and second coating.
  • polymer was included in the second coating. All the final results have same performance rating with respect to visual and donning aspects.
  • the method (100) of the present invention allows the anti-tack particles to be first entrapped on the outer surface of the latex film by dipping it in the anti-tack solution and then further utilizes the curing characteristic of the latex film to ensure adherence of the anti-tack particles to the latex film.
  • the anti-tack tendency is able to retain even after washing in the post-leaching process.
  • the present invention eliminates or minimizes the use of synthetic polymeric materials and chlorine to solve the environmental problem caused by conventional polymer coating and chlorination.
  • the present invention address the allergic issue by providing the anti-tack composition that is non-reactive and skin friendly.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Organic Chemistry (AREA)
  • Wood Science & Technology (AREA)
  • Materials Engineering (AREA)
  • Nanotechnology (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Animal Behavior & Ethology (AREA)
  • Epidemiology (AREA)
  • Medicinal Chemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Inorganic Chemistry (AREA)
  • Vascular Medicine (AREA)
  • Surgery (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Polymers & Plastics (AREA)
  • Coating Of Shaped Articles Made Of Macromolecular Substances (AREA)

Abstract

La présente invention divulgue un procédé (100) de production d'un article élastomère non pégueux sans poudre, le procédé (100) étant caractérisé par les étapes consistant à tremper un film de latex dans une solution comprenant des particules anti-pégosité (102) après un processus de pré-lixiviation, à durcir le film de latex pour piéger les particules anti-pégosité dans la surface du film de latex pour produire l'article élastomère non pégueux, les particules anti-pégosité comprenant des minéraux argileux revêtus de matériaux anti-pégosité secondaires. La présente invention divulgue également une composition anti-pégosité pour un article élastomère exempt de poudre non pégueux, la composition comprenant un minéral argileux, un sel métallique d'acide gras et un tensioactif, éventuellement de l'amidon, de la cire, de la silicone, un épaississant ou toute combinaison de ceux-ci.
PCT/MY2023/050079 2022-10-07 2023-10-04 Composition anti-pégosité et procédé de production d'un article élastomère sans poudre non pégueux WO2024076228A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
MYPI2022005612 2022-10-07
MYPI2022005612 2022-10-07

Publications (2)

Publication Number Publication Date
WO2024076228A1 true WO2024076228A1 (fr) 2024-04-11
WO2024076228A4 WO2024076228A4 (fr) 2024-06-06

Family

ID=89068690

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/MY2023/050079 WO2024076228A1 (fr) 2022-10-07 2023-10-04 Composition anti-pégosité et procédé de production d'un article élastomère sans poudre non pégueux

Country Status (1)

Country Link
WO (1) WO2024076228A1 (fr)

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3935124A (en) * 1974-01-02 1976-01-27 Miller Chemical Corporation Anti-stick composition for coating and detackifying uncured rubber articles and the like
US4354001A (en) * 1980-12-04 1982-10-12 The General Tire & Rubber Company Rubber slab dip
US5178676A (en) 1990-10-31 1993-01-12 J. M. Huber Corporation Surfactant treated clays useful as anti-tack agents for uncured rubber compounds
CN1242786A (zh) * 1996-12-31 2000-01-26 伊西康公司 涂覆的滑爽性弹性易弯曲制品及其制备方法
WO2002032475A2 (fr) 2000-10-20 2002-04-25 Ssl International Gant en neoprene
US20030138579A1 (en) 2002-01-22 2003-07-24 Savoca Ann C. Rubber article having an outer polymer-coated surface and an inner chlorinated surface
EP3434437A1 (fr) * 2017-07-25 2019-01-30 Skinprotect Corporation SDN BHD Gants élastomères et leur procédé de production

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3935124A (en) * 1974-01-02 1976-01-27 Miller Chemical Corporation Anti-stick composition for coating and detackifying uncured rubber articles and the like
US4354001A (en) * 1980-12-04 1982-10-12 The General Tire & Rubber Company Rubber slab dip
US5178676A (en) 1990-10-31 1993-01-12 J. M. Huber Corporation Surfactant treated clays useful as anti-tack agents for uncured rubber compounds
CN1242786A (zh) * 1996-12-31 2000-01-26 伊西康公司 涂覆的滑爽性弹性易弯曲制品及其制备方法
WO2002032475A2 (fr) 2000-10-20 2002-04-25 Ssl International Gant en neoprene
US20030138579A1 (en) 2002-01-22 2003-07-24 Savoca Ann C. Rubber article having an outer polymer-coated surface and an inner chlorinated surface
EP3434437A1 (fr) * 2017-07-25 2019-01-30 Skinprotect Corporation SDN BHD Gants élastomères et leur procédé de production

Similar Documents

Publication Publication Date Title
JP6557287B2 (ja) 手袋コーティングおよび製造方法
JP3219872B2 (ja) 粉末無使用医療用手袋
US5069965A (en) Articles having improved slip coatings
JP2871099B2 (ja) 柔軟性ポリ塩化ビニル製品およびその製造方法
AU760951B2 (en) Powder-free gloves with a silicone impregnated polyurethane inner coating
JPH0670143B2 (ja) 離型性および装着性が改良されたラテックス手袋
CA2485746C (fr) Gant superposable
US6641879B1 (en) Acrylic glove with internal coating
EP3063181B1 (fr) Émulsions polymères aqueuses hydrophiles/hydrophobes et produits et procédés s'y rapportant
WO2023067676A1 (fr) Procédé de fabrication de corps moulé sous forme de film
WO2024076228A1 (fr) Composition anti-pégosité et procédé de production d'un article élastomère sans poudre non pégueux
EP1309658B1 (fr) Revetement de gants de caoutchouc
JPH1161527A (ja) 着脱性に優れたゴム製手袋及びその製造方法
AU2001280914A1 (en) Novel coating for rubber gloves
US20150113704A1 (en) Hydrophilic/hydrophobic aqueous polymer emulsions and products and methods relating thereto
US20040022980A1 (en) Water-based coating for rubber articles
WO2005033229A1 (fr) Couche d'impression intermediaire
WO2024076228A4 (fr) Composition anti-pégosité et procédé de production d'un article élastomère sans poudre non pégueux
JP4148602B2 (ja) アクリル樹脂手袋用の内面処理剤およびそれを用いた手袋
JPH0753922B2 (ja) 塩化ビニル樹脂製手袋の製造方法
CN114766766A (zh) 一种丁腈手套及其制备方法
JPH0692495B2 (ja) ゴム製品の表面処理方法
JP2002285414A (ja) ゴム製手袋の製造方法
JPH0753808B2 (ja) ゴム製品の表面処理方法
JP2004316013A (ja) 作業用手袋

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 23817224

Country of ref document: EP

Kind code of ref document: A1