KR20050050989A - Lubricant composition for tire trimming - Google Patents

Abstract

The present invention relates to a lubricating oil composition for tire trimming, and a conventional lubricating oil for tire trimming is an oil-based lubricating oil, which is sprayed onto the floor of the work space when sprayed and applied or when the tire is rotated in such a process. There are problems such as being undesirable for safety and causing stains on the outside of the tire when the lubricant is applied to the tire. However, the present invention solves the above problems and facilitates cleaning of the trimming workshop, and the lubricant is at the bottom. The present invention provides a lubricant trimming composition for tire trimming that minimizes slippage even when applied to the tire, and prevents contamination due to stains when applied to the tire.

Description

Lubricant composition for tire trimming {LUBRICANT COMPOSITION FOR TIRE TRIMMING}

The present invention relates to a lubricating oil composition for tire trimming, and more particularly, not only to facilitate cleaning of the trimming workshop to which the lubricating oil is applied, but also to minimize slippage of the floor by applying the lubricating oil, and the lubricating oil to the tire The present invention relates to a lubricating oil composition for trimming tires, which may be prevented from being stained even when applied to the stain.

Lubricating oil for tire trimming is a material applied to a trimming cutter and a spindle for supporting and rotating a tire to cut tire bleed in a trimming process. Since the friction between the trimming cutter and the spindle and the tire can be prevented from damaging the tire surface, the trimming lubricating oil is applied to the trimming cutter for cutting the extraction and the spindle for supporting and rotating the tire. That is, the tire trimming lubricant is used to prevent heat release and damage to the tire surface during tire trimming.

As a conventional tire trimming lubricant, oil-based vegetable oils have been mainly used to increase lubrication. However, since oil-based lubricant is used as a spray coating method in the trimming process, and the tire is continuously rotated, there is a problem that the safety accident of the operator increases because oil-based lubricant is scattered and slipped on the floor of the work space.

In addition, when the oil-based lubricant is scattered on the tire, there is a problem that appearance contamination such as staining occurs on the outside of the tire.

The present invention aims to minimize the slipperiness of the floor as well as to facilitate the cleaning of the trimming workshop by developing the tire trimming lubricant composition into an aqueous system having affinity with water.

In addition, an object of the present invention is to provide a tire trimming lubricating oil composition in which contamination due to staining does not occur even when applied to tire treads and side portions.

The lubricating oil composition for tire trimming of the present invention is 5 to 15% by weight of vegetable oil (vegetable oil), 17 to 27% by weight of propylene-ethylene copolymer, 1 to 3.5% by weight of fatty acid, 2 to 6% by weight of nonionic emulsifier, amine It comprises 0.5 to 1.5% by weight of the compound and the remaining amount of water.

In the lubricating oil composition for tire trimming of the present invention, the vegetable oil is used for lubrication and corrosion prevention, and its content is preferably 5 to 15% by weight based on the total weight of the composition. If the content of vegetable oil is less than 5% by weight, it is not preferable because the tire lacks lubricity and the tire is bounced out of the trimming device during trimming and the workability decreases.If the content of vegetable oil exceeds 15% by weight, the tire side rubber This is because it causes undesirable swelling when contaminated. The type of vegetable oil is not particularly limited, but cottonseed oil is preferred.

In the lubricating oil composition for tire trimming of the present invention, the propylene-ethylene copolymer is used for lubrication and corrosion prevention like vegetable oil, and its content is preferably 17 to 27% by weight based on the total weight of the composition. If the content of the propylene-ethylene copolymer is less than 17% by weight, it is not preferable because the tire lacks lubricity and the workability decreases when trimming, and the workability decreases, and the content of the propylene-ethylene copolymer exceeds 27% by weight. This is because the swelling phenomenon occurs when the tire tire side rubber is contaminated.

In the lubricating oil composition for tire trimming of the present invention, the fatty acid is used as a thickener and a binder as well as lubrication enhancing action, the content of which is preferably 1 to 3.5% by weight based on the total weight of the composition. If the content of fatty acid is less than 1% by weight, the fatty acid may not function effectively as a lubrication enhancer and a thickener, and it is not preferable because of poor applicability when applied to the spindle, and if the content of fatty acid exceeds 3.5% by weight. It is not preferable because the problem of lubrication enhancement and thickening agent is exceeded, which causes a problem of flowing down when applied to the spindle. Although there is no restriction | limiting in the kind of fatty acid used for this invention, It is preferable that carbon number is 16-19. If the number of carbon atoms is less than 16, the film will not be formed on the coated surface, which will cause a problem of flowing down. Therefore, contamination will increase, and if the carbon number exceeds 19, the viscosity will be high, resulting in an uneven coating film on the coated surface. This is not preferable because the drying is delayed and the contamination of the surface is increased.

In the lubricating oil composition for tire trimming of the present invention, a nonionic emulsifier is used to disperse the above components, and propylene glycol fatty acid ester, glycerin fatty acid ester, pentaerythritol fatty acid ester, sorbitan fatty acid ester or sucrose ester and the like are preferable. Do.

In the lubricating oil composition for tire trimming of the present invention, the amine compound is used for lubrication enhancing action and corrosion prevention, and it is preferable to use ethylene diamine, diethylenetriamine or ethylene amine such as triethylenetriamine as aliphatic amine. Do.

In the lubricating oil composition for tire trimming of the present invention, the content of the nonionic emulsifier and the amine compound is 2 to 6% by weight of the nonionic emulsifier and 0.5 to 1.5% by weight of the amine compound based on the total composition. If the content is less than the amount, the emulsified state is insufficient and phase separation and partial agglomeration between components occur, which is not preferable. If the content is exceeded, the function of the lubricating oil composition of the mall is degraded or the surface of the tire, which is the adhered surface, is stained. It is not preferable because it also affects the appearance deterioration of the use site.

Hereinafter, the present invention will be described in more detail with reference to the following examples. However, the present invention is not limited or limited thereto.

EXAMPLE

Example 1

As shown in Table 1, 10% by weight of vegetable oil, 22% by weight of propylene-ethylene copolymer, 2.5% by weight of fatty acids having 18 carbon atoms, 4% by weight of nonionic emulsifier, and 1% by weight of amine compound were added to 60.5% by weight of water. A lubricating oil composition for tire trimming was prepared by stirring at 50 ° C. at a speed of 20˜30 rpm for 1 hour.

Example 2

The same composition and method as in Example 1, except that 5% by weight of vegetable oil, 27% by weight of propylene-ethylene copolymer, 1.5% by weight of fatty acids having 18 carbon atoms and 61.5% by weight of water are used as described in Table 1. A lubricant composition for tire trimming was prepared.

Comparative Example 1

A lubricant composition for tire extraction trimming was prepared in the same manner as in Example 1 using 95% by weight of vegetable oil, 2.5% by weight of sodium diisopropyl naphthalene sulfonate, and 2.5% by weight of polydimethyl siloxane.

Table 1: Composition of Trimming Lubricant Composition

division Example 1 Example 2 Comparative Example 1 vegetable oil 10 5 95 Sodium Diisopropyl Naphthalene Sulfonate - - 2.5 Polydimethyl siloxane - - 2.5 Siloxane - - - Propylene Ethylene Copolymer 22 27 - Fatty acids with 18 carbon atoms 2.5 1.5 - Nonionic emulsifier 4 4 - Amine compound One One - water 60.5 61.5 -

* Unit: weight%

Physical properties test of trimming lubricant

Physical properties of the lubricating oil composition for tire trimming according to Examples 1, 2 and Comparative Example 1 were measured by a known method. In particular, the viscosity was measured using a Brookfield viscometer while rotating at 30 rpm using spindle # 2, and the solid content was measured by the ratio of the amount remaining after the solution was heated at 105 ° C. for 2 hours. The measurement results are shown in Table 2.

Table 2: Physical Properties of Trimming Lubricants

division Example 1 Example 2 Comparative Example 1 importance 0.96 0.96 0.91 Viscosity ¹⁾ 150 160 70 Solids ²⁾ 68 67 99.8 pH 7.85-8.5 7.5 ~ 8.5 7.5 ~ 8.5

1): 25 ℃, # 2, 30rpm

2): 2 hours at 105 ° C

As shown in Table 2, it can be seen that the trimming lubricating oil composition of the present invention according to Examples 1 and 2 has a lower solid content and a higher viscosity than the conventional trimming lubricating oil composition according to Comparative Example 1. As the solid content increases, the film becomes thicker, which delays the drying speed and increases dust and dirt.

Evaluation of residue (contamination) after drying

After applying the trimming lubricating oil composition of Examples 1, 2 and Comparative Example 1 to a known tread rubber specimen by spraying, the presence of residue (contamination) on the surface of the rubber specimen was visually observed, and the drying rate was measured. Lubricity was measured according to ASTM-related regulations, and the results are shown in Table 3 below.

Table 3: Evaluation of Residuals (Contamination) after Drying]

division Example 1 Example 2 Comparative Example 1 Residue after drying none none has exist Drying speed (min) 38 40 100 Lubricity ¹⁾ 200 150 200

1): 4ball welding test

As described above, according to the present invention, the tire trimming lubricant composition is developed in an aqueous system having an affinity with water, thereby facilitating the cleaning of the trimming workshop and minimizing slippery of the floor. And a tire trimming lubricant composition in which contamination due to staining does not occur even when applied to side portions.

Claims (3)

In the lubricating oil composition for tire trimming, 5 to 15% by weight of vegetable oil, 17 to 27% by weight of propylene-ethylene copolymer, 1 to 3.5% by weight of fatty acid, 2 to 6% by weight of nonionic emulsifier, and 0.5 to 1.5 amine compound An aqueous lubricating oil composition for tire trimming, comprising a weight% and the remaining amount of water. The aqueous-based lubricating oil composition for tire trimming according to claim 1, wherein the vegetable oil is cottonseed oil. The aqueous-based lubricating oil composition for tire trimming according to claim 1, wherein the fatty acid has 16 to 19 carbon atoms.