KR101897809B1 - Release agent for urethane foam sheet for car - Google Patents

Abstract

The present invention relates to a release composition for a urethane foam sheet for cars, and more specifically, to a release composition for a urethane foam sheet for cars which reduces squeaky noise generated by the friction between the urethane foam sheet for cars and a sheet frame. The release composition for a urethane foam sheet for cars according to the present invention comprises 8 to 15 parts by weight of rubber, 1 to 8 parts by weight of a surfactant, 0.1 to 3 parts by weight of an emulsifier, and 0.1 to 3 parts by weight of a compatibilizer based on 100 parts by weight of an associative polymer.

Description

Technical Field [0001] The present invention relates to a urethane foam sheet for automobile,

The present invention relates to a urethane foam sheet forming composition for automobiles, and more particularly, to a urethane foam sheet forming composition for automobiles for reducing a squeak noise generated by friction between a urethane foam sheet for an automobile and a seat frame.

There are various causes and mechanisms of vibration noise generated in automobiles as a result of the relative motion of two objects in contact. Reduction designs for primary noise sources that cause engine, power train, and other anxiety are declining as a result of many studies.

However, as the reduction design for the first noise source is made, the discomfort due to the emotional quality such as BSR (Buzz, Squeak, Rattle) becomes relatively more sensitive.

According to J. D. Power, BSR noise is considered to be the consumer's fifth complaint and is recognized as a key factor in determining the quality of a car.

BSR refers to noise due to structural faults occurring at low frequencies. A buzz is a noise generated by a vibration of a structure alone, and a squeak refers to a vibration and a noise generated by the friction of these materials as a result of the relative motion of two objects in contact with each other. A rattle is a sound in which two or more objects vibrate and strike each other.

Korean Patent No. 10-0924840 discloses that a soundproof and dustproof mat comprising a synthetic rubber pad and a copper sheet is simply attached to the floor or both doors of a vehicle to remove noise generated in the vehicle, And vibration of the vehicle can be prevented, and the electromagnetic wave generated in the electronic device of the vehicle can be cut off.

In addition, Korean Patent No. 10-1428426 discloses a surface acoustic wave device in which a surface layer made of a heat-resistant material is laminated on the surface of a conventional sound absorbing material, wherein the surface layer penetrates into a nonwoven fabric having an indefinite vent hole formed by a complicated three- So as to maintain the three-dimensional shape of the inside of the nonwoven fabric without blocking the vent hole.

Korean Patent No. 10-1272552 discloses a method of finely pulverizing a waste sheet, mixing and pulverizing the resulting pulverized product with polyester fibers such as PET, low melting point polyester fibers such as LM PET, polypropylene fibers and hemp A process for producing a sound absorbing material from the process, and a sound absorbing material composition prepared thereby.

On the other hand, a seat of one of automobile parts uses a foam type thermosetting polyurethane foam to give a cushion feeling. When a driver and a passenger sit in a seat, a 'squeak', a 'squeak' sound noise is generated (see Fig. 1).

This is because, during the molding of the polyurethane foam sheet, the residual solid content of the release agent transferred to the polyurethane foam sheet after the release from the molding mold, and the residual solid content added to the rust preventive applied to the sheet- (As shown in Fig. 2).

Conventionally, in order to reduce the noise generated by the frictional noise between the polyurethane foam sheet and the frame, a middle layer sheet of nonwoven fabric or EVA material is applied, or a noise inhibitor is applied to the pad. However, uniform application is difficult.

Conventional anti-noise agents are produced by mixing an organic solvent with PE wax or crystalline wax, etc., and the anti-noise agent remaining in a high temperature working environment at a melting point of about 110 ° C is continuously cured and accumulated on the mold surface, It causes.

In addition, the use of a water-soluble solvent-based releasing agent has also been attempted. This is due to the addition of an emulsifier composed mainly of strongly alkaline sodium hydroxide as the main component, and the working environment is not pleasant due to its unique odor and loneliness. Rust was also generated and mold contamination was also high.

In order to solve the above problem, the present inventors have conducted comprehensive analysis on the relationship with temperature and humidity, pressure, and frictional force. As a result, the inventors of the present invention have found that, in a high humidity state, The present inventors have developed a mold release composition capable of keeping the surface of the product moist at room temperature even at room temperature, and can significantly lower the Squeak index from the mold release composition and at the same time, the mold release property can be remarkably reduced, And the present invention has been accomplished.

Korean Patent No. 10-0924840 Korean Patent No. 10-1428426 Korean Patent No. 10-1272552

SUMMARY OF THE INVENTION It is an object of the present invention to solve the above problems and to provide a urethane foam sheet composition for automobiles for reducing squeak noise generated by friction between a urethane foam sheet for a vehicle and a seat frame.

Another object of the present invention is to provide an automotive urethane foam sheet moldable composition capable of minimizing the thickness of a coating film and minimizing residual solids, thereby increasing the cleaning cycle of a mold for a urethane foam sheet for automobiles.

In order to solve the above-mentioned problems, the automotive urethane foam sheet forming composition of the present invention comprises 8 to 15 parts by weight of rubber, 1 to 8 parts by weight of a surfactant, 0.1 to 3 parts by weight of an emulsifier, 0.1 to 3 parts by weight.

The recycled polymer is hydrophobically modified ethoxylated polyurethane (HEUR).

The rubber is preferably one selected from the group consisting of butadiene rubber (BR), acrylbutadiene rubber (NBR), styrene butadiene rubber (SBR), silicone rubber (SR), ethylene-propylene diene rubber (EPDM) .

Wherein the emulsifier is any one of the group consisting of hydrogenated lanolin, PEG hydrogenated lanolin, and combinations thereof.

The surfactant is characterized in that it comprises any one of the group consisting of polysorbate, silicone surfactant, and combinations thereof.

The automotive urethane foam sheet releasing composition further comprises any one of an anti-settling agent, a non-slip additive, a surface tension reducing agent, a dispersant and a combination thereof.

In order to solve the above problems, the present invention provides a urethane foam sheet for automobiles to which the automotive urethane foam sheet releasing composition described above is applied.

As described above, the automotive urethane foam sheet forming composition according to the present invention has the effect of reducing the squeak noise generated by the friction between the urethane foam sheet for automobile and the seat frame.

The automotive urethane foam sheet mold release composition according to the present invention has an effect of minimizing the thickness of the coating film and minimizing the residual solids, thereby increasing the cleaning cycle of the mold for molding the urethane foam sheet for automobiles.

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a conceptual diagram showing a principle in which a squeak noise is generated by friction between an automobile seat frame and a urethane foam sheet. Fig.
2 is a conceptual view showing a principle in which a squeak noise is generated by a commercially available mold release agent used in manufacturing an automobile seat frame and a urethane foam sheet.
3 is a photograph showing a state in which the automotive urethane foam sheet releasing composition according to the present invention is applied to a mold.
4 is a photograph of the urethane foam sheet release composition for automobile manufactured by Example 1. Fig.

Specific features and advantages of the present invention will be described in detail below with reference to the accompanying drawings. The detailed description of the functions and configurations of the present invention will be omitted if it is determined that the gist of the present invention may be unnecessarily blurred.

The present invention relates to a urethane foam sheet forming composition for automobiles, and more particularly, to a urethane foam sheet forming composition for automobiles for reducing a squeak noise generated by friction between a urethane foam sheet for an automobile and a seat frame, 8 to 15 parts by weight of a rubber, 1 to 8 parts by weight of a surfactant, 0.1 to 3 parts by weight of an emulsifier and 0.1 to 3 parts by weight of a compatibilizer relative to 100 parts by weight of a synthetic polymer.

Hereinafter, each component will be described in detail.

Synthesized polymer

The recycled polymer is based on the principle that a polymer having a hydrophobic group at its end in association with water molecules is accumulated and thickened by hydrophobic interaction, and one hydrophobic part of the recycled polymer interacts with another hydrophobic part to form a three-dimensional network Structure to form a thickening effect.

By incorporating the above-mentioned resultant polymer, it is possible to stably mix the components in the mold release composition of the present invention and to modify the rheological properties.

The above-mentioned recycled polymer may be prepared by including an additive including any one of a recycled polymer, a solvent, a surfactant, a dispersant, a wetting agent, a defoamer, and a combination thereof. At this time, the solvent may be distilled water, an organic solvent, or a combination thereof. Preferably, distilled water is used to minimize the generation of volatile organic compounds (VOS).

The solid content of the resulting synthetic polymer is 5 to 50% by weight, and the viscosity may be 500 to 20,000 cps at 20 캜.

The recycled polymer may include a hydrophobically modified ethoxylated polyurethane (HEUR), a hydrophobically modified cellulose ether, a hydrophobically modified alkali-soluble emulsion (HASE), a hydrophobic modified hydrophilic polyurethane Hydrophobically modified polyethylene glycol (HM-PEG), hydrophobically modified poly (acetal-polyether) (HM-PAPE), and combinations thereof. Hydrophobically modified ethoxylated polyurethane (HEUR) is more preferably used.

Specific examples of the hydrophobically modified ethoxylated polyurethane (HEUR) include OPTIFLO-H 370 VF (Byk), OPTIFLO-H 3300 VF (Byk), Rheovis PU 1214 (BASF) Rheovis PU 1291 (BASF), and TEGO ViscoPlus 3030 (Evonik Tego Chemie).

Rubber

The rubber is added in order to impart coating film formation and releasability, and is preferably selected from the group consisting of butadiene rubber (BR), nitrile butadiene rubber (NBR), styrene butadiene rubber (SBR), silicone rubber (SR), ethylene-propylene diene rubber And combinations thereof, but the present invention is not limited thereto.

Preferably, 80 to 95% of the butadiene rubber and 5 to 20% of nitrile butadiene rubber may be added. The butadiene rubber may have a cis 1,4 bond content of 85 to 99% by weight The nitrile butadiene rubber preferably has an acrylonitrile (AN) content of 25 to 35% by weight. The nitrile butadiene rubber has low mold stain resistance and excellent cold resistance, oil resistance, and elasticity within the AN content range.

When the rubber is added in an amount of less than 8 parts by weight, it is difficult to impart releasability. If the rubber is added in an amount exceeding 15 parts by weight, a large amount of residual material is formed in the mold during molding Or it is difficult to form a uniform and thin coating film, so that it does not deviate from the above range.

Emulsifier

The emulsifying agent may be selected from the group consisting of animal wax, vegetable wax, mineral wax, silicone oil, higher fatty acid, higher alcohol, polyethylene wax, polypropylene wax and combinations thereof.

Specific examples thereof include lanolin, beeswax, squalane, mink oil, yolk oil, emu oil, carnauba wax, candelilla wax, jojoba oil, paraffin, petrolatum, microcrystalline wax, ceresin, montan wax, stearic acid, Palmitic acid, oleic acid, cetanol, stearyl alcohol, glycerol, propylene glycol, and the like, preferably lanolin.

Lanolin is a refined fat (wool grease) adhered to wool, and has superior hydration characteristics as compared with other oils, so that it is possible to further improve the dispersibility and reactivity in the releasing composition and the recycled polymer base.

More specifically, hydrogenated lanolin or PEG-hydrogenated lanolin may be used to improve hydrophilicity.

The hydrogenated lanolin and PEG hydrogenated lanolin are prepared by adding a catalyst such as nickel, copper-chromium or copper-nickel supported on a carrier such as diatomaceous earth or silicate to lanolin, stirring the mixture at a stirring speed of 300 to 500 rpm, ≪ / RTI > to 50 bar.

Under the hydrogenation conditions, raw lanolin having an iodine value of 20 to 40 in general is hydrogenated and reformed to lower the iodide value to 8 to 15, improving the melting point and oxidation stability, and controlling the reactivity.

The emulsifier is contained in an amount of 0.1 to 3 parts by weight based on 100 parts by weight of the associative thickener. When the emulsifier is added in an amount of less than 0.1 part by weight, the emulsifier hardly has releasability. When the emulsifier is added in an amount of more than 3 parts by weight, It is preferable not to deviate from the above range.

Surfactants

The surfactant may be selected from cationic surfactants, anionic surfactants, amphoteric surfactants, nonionic surfactants, silicone surfactants, and combinations thereof. Preferably, nonionic surfactants and silicone surfactants can be used. have.

The nonionic surfactant may be selected from the group consisting of polyethylene glycol sorbitan fatty acid esters, polyethoxylated fatty acid, fatty acid diesters, polyethylene glycol glycerol fatty acid esters, alcohol-oil transesterification products, poly Polyglycerated fatty acids, sterols and derivatives thereof, polyethylene glycol alkyl ethers, sucrose esters, polyethylene glycol alkyl phenols, polyoxyethylene-polyoxypropylene block copolymers, sorbitan fatty acid esters and lower alcohol fatty acid esters .

Examples of the nonionic surfactant include polysorbate 20 (Tween 20), polysorbate 80 (Tween 80), PEG-20 glyceryl triisostearate (PEG-20 glyceryl triisostearate) PEG-15 glyceryl monostearate, PEG-7 glyceryl cocoate and PPG-4-CETETH-1, laureth- 4 (Laureth-4), sorbeth-30 tetraisostearate, polyglyceryl-10 stearate, polyglyceryl-2 oleate, PEG / PPG block copolymer), and combinations thereof, but is not limited thereto.

At this time, the nonionic surfactant preferably has an HLB of 10 to 18, and more preferably, polysorbate 20 can be used.

The silicone surfactant is used to prevent orange peel and improve wettability and leveling property. Examples of the silicone surfactant include polydimethylsiloxane, polyether-modified polydimethylsiloxane, polymethylalkylsiloxane, and combinations thereof , And preferably a polyether-modified polydimethylsiloxane is used. The term " surfactant "

More preferably, the silicone surfactant may be a mixture of a polyether-modified polydimethylsiloxane and a polyether-modified hydroxysiloxane having an OH value (solids) of 20 to 35 mg KOH / g.

As the silicone surfactant, BYK 301, BYK 302, BYK 307, BYK 331 to 333, BYK 337, BYK 341, BYK 345 to 349, BYK 370 BYK 375, BYK 377 and BYK 378 can be used. BYK 348 and BYK 333 as dimethylsiloxane may be mixed with 65 to 85% by weight of polyether-modified hydroxysiloxane and 15 to 35% by weight of BYK 370 and BYK 375, respectively.

At this time, slip properties can be improved by using 60 to 70% by weight and 30 to 40% by weight of BYK 348 and BYK 333 as polyether-modified polydimethylsiloxane, respectively.

More preferably, polysorbate and a silicone surfactant may be mixed in a weight ratio of 1: 1 to 2 as the surfactant of the present invention.

The surfactant is contained in an amount of 1 to 8 parts by weight based on 100 parts by weight of the recurring polymer. When the surfactant is added in an amount of less than 1 part by weight, the resulting composition becomes less smooth and deteriorated in appearance. When the surfactant is added in an amount exceeding 8 parts by weight, And it is preferable that the coating material does not deviate from the above range because the residual material may be generated during demoulding and the coating thickness control and uniform application are difficult.

Compatibilizer

The compatibilizing agent is added in order to improve the mixing property and compatibility of the mold-releasing composition, particularly, the rubber and other compounding materials, and examples thereof include rosin ester, terpene-phenol resin, But is not limited thereto.

More preferably, a rosin ester is used, and more preferably, a hydrogenated ester of Resin can be used.

Hydrogenated rosin ester is obtained by subjecting rosin and a polyhydric alcohol to an esterification reaction and then subjecting porous palladium, platinum and nickel particles having an average particle size of 100 to 500 nm and a porosity of 40 to 85% to 10 to 30 wt% And the hydrogen (H2) is injected at 90 to 200 DEG C at 10 to 1000 sccm for 10 minutes to 90 minutes with stirring at 150 to 500 rpm.

The hydrogenated rosin ester may have a solid content of 25 to 45% by weight, a viscosity at 25 ° C of 1000 to 6000 cps, a pH of 8 to 9, and an acid value of 15 to 20.

When the compatibilizing agent is added in an amount of less than 0.1 parts by weight, it is difficult to expect the effect of increasing the compatibility and the mixing of the compound. When the compatibilizing agent is added in an amount exceeding 3 parts by weight It is preferable that the above range is not exceeded because residual materials are generated in the demoulding or uniform application of the releasing composition is difficult.

additive

The automotive urethane foam sheet releasing composition may further include any one of an anti-settling agent, a non-slip additive, a surface tension reducing agent, a dispersing agent, a cryoprotectant, a defoaming agent and a combination thereof.

As the anti-settling agent, it is possible to increase the leveling property and workability by preventing sedimentation and layer separation of the constituents, and specific examples include BYK 7420ES, BYK 425, BYK 428, BYK 420 and BYK D420. , BYK 7420ES, which can achieve a three-dimensional network structure after mixing as a modified urea, can be used. The anti-settling agent may be added in an amount of 0.001 to 2 parts by weight based on 100 parts by weight of the recycled composition.

The non-slip additive may be a modified polypropylene-based wax emulsion and a modified polyethylene-based wax emulsion, wherein the viscosity of the non-slip additive is from 5 to 150 cps at 23 캜. Specific examples are BYK AQUACER 582 and AQUACER 583. The non-slip additive may be added in an amount of 0.001 to 3 parts by weight based on 100 parts by weight of the resultant.

As the surface tension lowering agent, alcohol alkoxylate, polyether modified polymethylsiloxane and the like can be used, and it is not limited as long as it is water-based and prevents surface tension and prevents crater development. As specific examples, BYK348 and BYK-DYNWET 800N can be used. The surface tension reducing agent may be added in an amount of 0.005 to 1 part by weight based on 100 parts by weight of the resultant.

Specific examples of the dispersant include DISPERBYK 102, DISPERBYK 180 to 182, DISPERBYK 184 to 185, DISPERBYK 187, DISPERBYK 190 to 194N, DISPERBYK 199, DISPERBYK 2010 to 2013, DISPERBYK 2015, DISPERBYK 2055, DISPERBYK 2060 to 2061, DISPERBYK 2096, BYK 154, and ANTI-TERRA 250 may be used, preferably DISPERBYK 190. The dispersant may be added in an amount of 0.001 to 5 parts by weight based on 100 parts by weight of the recycled composition.

Examples of the anti-freezing agent include propylene glycol, methanol, ethyl alcohol, glycerin, and ethylene glycol. The amount of the cryoprotectant may be 0.1 to 3 parts by weight based on 100 parts by weight of the composition.

Specific examples of the antifoaming agent may include BYK 011, BYK 015, BYK 017, BYK 019, BYK 093, and BYK 1719, and the antifoaming agent may be added in an amount of 0.001 to 1 part by weight based on 100 parts by weight of the antifoaming agent.

The automotive urethane foam sheet forming composition according to the present invention can be used not only for the application of a urethane foam sheet for automobiles but also for the production of molded articles in which friction noise can be used.

The automotive urethane foam sheet mold release composition according to the present invention can be applied to a mold for an automobile urethane foam sheet by using any one of a spray, a brush, a roller and a combination thereof.

FIG. 3 shows a state in which the automotive urethane foam sheet forming composition according to the present invention is applied to a mold using a spraying apparatus.

The spraying may be performed by setting the nozzle diameter of the spraying apparatus to 0.05 to 0.5 inch, the spraying temperature to the room temperature (20 ± 5 ° C), and the spraying pressure to 50 to 500 psi. Under the coating conditions, , And the working efficiency is excellent.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

Comparative Example 1

A mold release agent for a vehicle urethane foam sheet containing a mixture of a commercially available organic solvent and paraffin as a main component was used.

Example 1

10 g of nitrile rubber, 10 g of water-added lanolin, 15 g of polysorbate (Tween 20), 15 g of silicone surfactant (BYK 348), 20 g of water-soluble rosin ester (TW 610) 10 g of dispersant (BYK190), 0.3 g of anti-settling agent (BYK 7420ES) and 5 g of non-slip additive (BYK 593) were charged and stirred to prepare a mold release composition. 4 is a photograph of the urethane foam sheet forming composition for automobile manufactured by Example 1. Fig.

Example  2

Glycerol was used as an emulsifying agent, and the rest of the conditions were the same as in Example 1.

10 g of nitrile rubber, 10 g of glycerol, 15 g of polysorbate (Tween 20), 15 g of silicone surfactant (BYK 348) and 7 g of water-soluble rosin ester (TW 610) were dissolved in a mixture of 1000 g of the synthetic polymer (OPTIFLO-H 3300 VF), 100 g of polybutadiene rubber, , 10 g of a dispersant (BYK190), 0.3 g of an anti-settling agent (BYK 7420ES) and 5 g of a non-slip additive (BYK 593) were charged and stirred to prepare a mold release composition.

Example  3

As the surfactant, only the nonionic surfactant was used alone, and the remaining conditions were the same as in Example 1.

(7 g) of water-soluble rosin ester (TW610), 10 g of dispersant (BYK190), 10 g of polyvinylidene chloride, 10 g of polyvinylidene chloride, 10 g of polybutadiene rubber, 10 g of nitrile rubber, 10 g of water-added lanolin, 30 g of polysorbate 0.3 g of anti-settling agent (BYK 7420ES) and 5 g of non-slip additive (BYK 593) were added and stirred to prepare a mold release composition.

Example  4

Hydrogenated rosin ester was not used, and common rosin ester was added. The rest of the conditions were the same as in Example 1.

100 g of polybutadiene rubber, 10 g of nitrile rubber, 10 g of water-added lanolin, 15 g of polysorbate (Tween 20), 15 g of silicone surfactant (BYK 348), 10 g of rosin ester (Ecopower MA-130 ), 10 g of a dispersant (BYK190), 0.3 g of an anti-settling agent (BYK 7420ES) and 5 g of a non-slip additive (BYK 593) were charged and stirred to prepare a mold release composition.

Example  5

The release composition prepared in Example 1 and a commercial release agent (Comparative Example 1) were mixed in a weight ratio of 7: 3.

Squeak index (MS300-31), noise level, odor, and peel strength (release force) were measured according to the test method of the H automobile company in Korea. The flash point measurement (ASTM D3278) was measured at the polymer research institute. Drying time, film thickness, residual solids and buildup were measured by themselves.

The drying time was measured by referring to SPS-KPIC 5017-1919, and the film thickness was measured by comparing the thickness before and after drying. The residual solids were determined by measuring the solids remaining in the mold after mold release and self-referencing with reference to H ISO 3727.

Table 1 below shows the test results.

As a result, it was confirmed that the Squeak Noise can be significantly reduced in Examples 1 to 4, compared with a commercially available product, while the Squeak Index is 0.2 or less.

Particularly, in Example 1, in comparison with Example 2 using glycerol as an emulsifier, Example 3 using a nonionic surfactant alone as a surfactant, and Example 4 using a common rosin ester, the drying time, the Squeak Index, the noise level, .

Also, in Examples 1 to 5, residual solid content is much lower than that of a commercial product, so that mold contamination is reduced, mold wash cycle can be increased, and contamination of automobile urethane foam sheet can be expected to be reduced.

It was confirmed that the test results were excellent even when the commercially available product was mixed with Example 1 through Example 5.

The mold release composition according to the present invention is excellent in the transparency with respect to the polyurethane foam sheet and has a low transfer rate to the mold, thereby reducing the mold cleaning cycle, minimizing the use of organic solvents and minimizing the generation of volatile gases It can provide a pleasant work environment and reduce the risk of fire.

At the same time, even if the mold releasing composition remains on the surface of the mold, it is not solidified even in a low temperature environment of 40 ° C, and is present in a state of being coated on the surface of the mold in the form of a gel formulation. Therefore, it is necessary to perform the operation in a high temperature environment like a conventional anti- There is an effect that the application amount of the post-work product is decreased during the application work and the contamination of the mold can be reduced.

When the releasing composition according to the present invention is applied, since the automobile urethane foam sheet slips slowly in the frame in a state of being moistened, the noise can be minimized and the releasing property is excellent, so that the application amount can be reduced.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is clearly understood that the same is by way of illustration and example only and is not to be taken as limiting the scope of the present invention. The present invention can be variously modified or modified. The scope of the invention should, therefore, be construed in light of the claims set forth to cover many of such variations.

Claims (7)

An automotive urethane foam sheet forming composition for reducing a squeak noise generated by friction between a urethane foam sheet for an automobile and a seat frame,
From 8 to 15 parts by weight of a rubber, from 1 to 8 parts by weight of a surfactant, from 0.1 to 3 parts by weight of an emulsifier and from 0.1 to 3 parts by weight of a compatibilizer, based on 100 parts by weight of the recycled polymer,
The resulting synthetic polymer
Hydrophobically modified ethoxylated polyurethane (HEUR) is a hydrophobic modified polyurethane,
The rubber
80 to 95% of butadiene rubber and 5 to 20% of nitrile butadiene rubber,
The emulsifier
And hydrogenated lanolin having 8 to 15 iodine, PEG hydrogenated lanolin, and combinations thereof.
(EN) Urethane foam sheet releasing composition for automobile.
delete delete delete The method according to claim 1,
The surfactant
A non-ionic surfactant, a silicone surfactant, and combinations thereof.
(EN) Urethane foam sheet releasing composition for automobile.
The method according to claim 1,
The automotive urethane foam sheet releasing composition
An anti-settling agent, a non-slip agent, a surface tension reducing agent, a dispersant, a cryoprotectant, and a combination thereof.
(EN) Urethane foam sheet releasing composition for automobile.
A urethane foam sheet for automobiles to which the automotive urethane foam sheet releasing composition of any one of claims 1, 5, and 6 is applied.

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