JPS59196352A - Vinyl chloride resin composition - Google Patents

Abstract

PURPOSE:To control the stickiness of moldings, by adding a chlorinated fatty acid barium salt to a polyvinyl chloride resin contg. a relatively large quantity of a plasticizer in a specified weight ratio. CONSTITUTION:50-200pts.wt. plasticizer such as dibutyl phthalate or dioctyl phthalate and 0.1-10pts.wt. chlorinated fatty acid barium salt are added to 100pts.wt. polyvinyl chloride resin to obtain the desired vinyl chloride resin compsn. By the addition of the chlorinated fatty acid barium salt, the molding is freed from the problem of surface tackiness which is caused by the addition of the plasticizer to the vinyl chloride resin. An example of the chlorinated fatty acid barium salt is PG-500 B (a product of Tokyo Fine Chemicals K.K.).

Description

DETAILED DESCRIPTION OF THE INVENTION The invention relates to a vinyl chloride resin composition that provides non-stick molded articles.

In general, vinyl chloride resins are widely used in extrusion molding, injection molding, blow molding, etc. because they can easily give good results.

However, depending on the application, it has the disadvantage that the surface tends to become sticky, and there has been a demand for a material that does not have a sticky surface. To meet this requirement, there are methods to use plasticizers that have good compatibility with vinyl chloride resin, methods to reduce the amount added by using plasticizers with high plasticization efficiency, and methods to use inorganic fillers such as calcium carbonate, talc, and clay. Possible methods include blending a large amount of the agent.

has been used. However, all of these methods are insufficient, and are particularly difficult for materials that require a hardness of 70 or less (J-K5K6301) and low migration to other resins. Ta.

In view of this situation, the present inventors conducted intensive studies in order to find a vinyl chloride resin composition free from the above-mentioned drawbacks, and as a result, the Ba salt of chlorinated fatty acid was added to 0.1 to 10
They discovered that by adding part by weight, a non-sticky molded product can be obtained and completed the invention. An object of the present invention is to provide a vinyl chloride resin composition that provides a non-sticky molded article.

In other words, the invention is a polyvinyl chloride resin, 50 to 200 parts by weight of a plasticizer, and 0.1 to 10 parts of a Ba salt of a chlorinated power-running fatty acid to give a non-stick molded product. A vinyl chloride resin composition is provided.

The expression "vinyl chloride resin" used in the present invention refers to a vinyl chloride homopolymer or a copolymer mainly composed of vinyl chloride and a monomer copolymerizable therewith.

In the composition of the present invention, the plasticizer is added to soften the obtained molded product, and is considered to be one of the causes of stickiness. The amount added varies depending on the intended use of the molded product, but if it is less than 50 parts, it will be sufficiently absorbed into the polyvinyl chloride resin and the molded product will have less stickiness. However, if the amount exceeds 100 parts by weight, the degree of stickiness increases in proportion to the amount added, and especially if it exceeds 100 parts by weight, stickiness is unavoidable unless Ba salt of chlorinated fatty acid is added. Moreover, if it exceeds 200 parts by weight, dry-up properties during production will be extremely poor, causing many practical problems.

Examples of such plasticizers include alkyl esters of aromatic polybasic acids such as dibutyl phthalate, dioctyl phthalate, and butylbenzyl phthalate; alkyl esters of aliphatic polybasic acids such as dioctyl adipate, dioctyl acetate, and dioctyl sebacate; Examples include alkyl esters of phosphoric acid such as resin phosphate, polyesters, and the like.

Regarding Ba salts of chlorinated fatty acids, no sufficient effect is observed when the amount is less than 1 part by weight, and the effect is seen in proportion to the amount added from 0.5 to 10 parts by weight, but when it exceeds 10 parts by weight No further effect was observed.

The vinyl chloride resin composition of the present invention may be used by blending other thermoplastic resins, rubbers, heat stabilizers, fillers, pigments, etc. as necessary. Examples of the heat stabilizer include lead-based heat stabilizers, tin-based stabilizers, metal soap, etc., and the amount added thereof is generally 5% by weight or less.

The technical contents of the present invention will be explained using examples.

Example I 100 parts by weight of P1400 vinyl chloride resin, 30 to 250 parts by weight of dioctyl phthalate, 0.5 to 10 parts by weight of Ba salt of chlorinated fatty acid (PG-500B manufactured by Tokyo Fine Chemical), and tribasic 3 parts by weight of lead sulfate was added, and the mixture was kneaded with rolls at a roll temperature of 180°C to form pellets. The pellets were injection molded and extruded, and the degree of flatness was examined. The above results are shown in Table 1.

Table 1 Level of stickiness ◎ No stickiness at all ○ Almost no stickiness ∆ A little stickiness × Very high stickiness The above results demonstrate that the present invention provides molded products without stickiness. Recognize.

Claims (1)

[Claims] A soft material characterized by adding 100 parts by weight of polyvinyl chloride resin, 50 parts by weight to 200 parts by weight of a plasticizer, and 0.1 parts by weight to 10 parts by weight of Ba salt of chlorinated fatty acid. Polyvinyl chloride resin composition.