JPS61271362A - Lustering agent - Google Patents

Abstract

PURPOSE:To provide a lustering agent which prevents rubber surface from being cracked and can keep luster over a long period of time, consisting of an acrylic/styrene copolymer, PE wax, an alkali-soluble resin, a plasticizer and a film-forming aid. CONSTITUTION:8-20wt% acrylic/styrene copolymer, 3-8wt% high-melting PE wax, 1-4wt% alkali-soluble styrene/maleic acid copolymer resin, 0.5-2wt% phthalate plasticizer, 2-6wt% glycol ether film-forming aid and optionally, surfactant (e.g. sulfonic acid fluoride), anti-foaming agent, etc. are blended together.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Application of the Invention] The present invention relates to a polishing agent, and particularly to a polishing agent that imparts gloss to the surface of rubber or the like.

[Background of the invention]

Rubber is used in various fields because it has advantages such as ease of processing and high elasticity. However, because rubber has low hardness, it is easily scratched on one surface.
Moreover, the gloss of its surface is likely to be lost. Therefore, in cases where appearance is important, such as in interior decoration products, polishing agents that maintain gloss are generally used.

Conventional polishing agents include ordinary waxes such as normal paraffin and carnauba wax, and emulsions of silicone oil and water. Also as a special polishing agent.

A copolymer wax of monoolefin and maleic anhydride as shown in JP-A-55-58274, which is mainly composed of silicone oil and mineral oil, as shown in JP-A-55-7862; Amine-modified silicone oil and a wax containing dimethyl silicone as a main component, as shown in Japanese Patent No. 56-62861, have been proposed.

However, when the above-mentioned polishing agent is used in a place that can be touched by one hand, for example, on a microconveyor rail,
Because the polish easily transfers to your hands, the shine will be lost in a relatively short period of time.

Generally, handrails for microconveyors are made of handrails, and the surface of the handrails is usually coated with a silicone oil emulsion to give it a glossy finish. However, because the rail is touched by many users, it loses its luster in an extremely short amount of time. For this reason.

Another method is to apply urethane resin to the surface of the handrail and harden it. However, a typical handrail on a passenger conveyor is connected as an endless handrail 1, as shown in FIG. 1, and is driven by a drive pulley 2. At this time, the handrail 1 is pressed against the roller 3.

Moreover, since it was driven in a bent state, cracks were likely to occur in the resin layer on the surface.

[Purpose of the invention]

The purpose of the present invention is to provide a polishing agent that can prevent cracks on the surface of rubber and maintain its luster for a long time even when the rubber is used in a state where it is easily touched by human hands (and easily bent). There is a K that provides.

[Summary of the invention]

The present invention first takes into consideration the working time and uses various polymers, waxes, resins, and plasticizers to form a film.

The film forming aid should not have any negative effect on the handrail and should have good adhesion to rubber.

As a result of examining whether cracks would not occur when bent, etc., the polymer was an acrylic styrene copolymer, the wax was a polyethylene wax with a high melting point, and the resin was an alkali-soluble styrene-maleic heavy metal material.
The above object is achieved by using a phthalate ester as a plasticizer, a glycol ether as a film forming aid, and using water as a solvent.

[Embodiments of the invention]

An embodiment of the present invention will be described below.

As mentioned above, this polishing agent is a film-forming type.

You can get it like this:

Acrylic styrene copolymer ・・・・・・・・・・・・
・13% by weight high melting point polyethylene wax ・・・・・
...5% by weight styrene, leic acid copolymer resin ・N1...2% by weight 7-talate ester plasticizer...
・・・・・・・・・・・・1% by weight glycol ether film forming aid 4% by weight sulfonic acid fluoride surfactant 0.5% by weight and some antifoaming agent 5KL was added using water as a solvent so that the total amount was 100% by weight, and the whole was stirred to obtain a polishing agent which was a milky white uniform solution.

A red hand rail for a passenger conveyor that has been in operation for over 14 years and has lost its luster by 1 to 3 degrees Celsius.

The effectiveness of one polishing agent was confirmed using three types, blue and black. First, wipe the above-mentioned handrail with a 20% ethanol solution to remove dirt, and after drying thoroughly, soak a flannel cloth with a polishing agent, wring it out well, and apply it to the surface of the handrail. Coated.

This one application will not completely restore the luster.

After drying for 3 minutes after application, the application process was repeated in the same manner, and the gloss was almost uniformly restored. In the case of conventional silicone oil emulsion.

The table below shows the restoration of gloss with this polishing agent.

As can be seen from this table, the single polishing agent was able to maintain gloss for a longer time than conventional products, and no cracks were observed. Moreover, this polish dries quickly after application (you can finish the job in a short time).

In addition, when we experimented with changing the ratio of each component of this polish, we found that the acrylic styrene copolymer was 8 to 20% by weight,
3-8% by weight of polyethylene wax, 1-4% by weight of styrene-maleic acid copolymer-based alkali-soluble resin, 0.5-2% by weight of phthalate-based plasticizer, and 2% by weight of glycol ether-based film-forming aid. It has been found that it is best to use it in a range of 6% by weight.

〔Effect of the invention〕

As explained above, the present invention provides a polishing agent whose main components are an acrylic styrene copolymer, a polyethylene wax, an alkali-soluble styrene-maleic acid copolymer resin, a phthalate ester plasticizer, and a glycol ether film-forming aid. Because of that.

The gloss of the rubber surface is maintained for a long time, and the surface does not crack even when used in a bent position like a handrail for a passenger conveyor.

[Brief explanation of the drawing]

The drawing is a side view of a handrail for a passenger conveyor to which the polishing agent of the present invention is applied.

Claims (1)

[Claims] 1. Main ingredients include acrylic styrene copolymer, polyethylene wax, styrene-maleic acid copolymer-based alkali-soluble resin, phthalate-based plasticizer, and glycol ether-based film auxiliary agent. Polishing agent. 2. In the product according to claim 1, the acrylic styrene copolymer is contained in an amount of 8 to 20% by weight, the polyethylene wax is contained in an amount of 3 to 8% by weight, and the styrene-maleic acid copolymer-based alkali-soluble resin is contained in an amount of 1 to 20% by weight. 4% by weight
, 0.5 to 2% by weight of the above phthalate plasticizer,
A polishing agent characterized by containing 2 to 6% by weight of the glycol ether film auxiliary agent.