JPS60243137A - Agent for improving heat-resistance of synthetic resin - Google Patents

Abstract

PURPOSE:To provide an agent for improving the heat-resistance of a synthetic resin, consisting of a specific compound, and exhibiting excellent effect to the antistatic property, surface lubricity, color tone, mold releasability, acceleration of crystallization, etc. as well as heat-resistance when compounded to a synthetic resin. CONSTITUTION:0.1-5pts.wt., preferably 0.2-3pts.wt. of a modifier consisting of the compound of formula [A is 1-22C alkyl; R<1> and R<2> are ethylene, propylene or mixed alkylene group; m+n is 1-30; p+q is 1-30; X is -CH2-, -SO2-, -C(CH3)2-, O, or S; Y is residue of 2-10C dibasic acid] is added to 100pts.wt. of a synthetic resin (e.g. polyolefin, polyvinyl halide, ABS resin, etc.).

Description

[Detailed description of the invention] [Industrial application field] The present invention relates to a heat resistance modifier for synthetic resins.

More specifically, for synthetic resin molded products, antistatic effect, dropless effect, surface lubrication effect, color tone improvement effect based on improved coloring material dispersion, or lubricity effect necessary during molding, detachment effect, crystallization effect. The present invention relates to a heat resistance modifier for synthetic resins that exhibits a heat-resistance modifier effect.

[Conventional technology and problems]

Conventionally, modifiers have been used in synthetic resin products for various purposes depending on the type of resin. The purposes can be broadly classified as follows.

■To improve moldability...Lubricant, mold release agent.

Crystallization accelerator■ To improve product properties...Antistatic agent, non-drop agent 1 Surface lubrication improver 1 Color tone improver Modifiers conventionally used for the above purposes are heat resistant during processing. There were problems in that the effect (meaning coloring of the product or fuming due to volatilization of effective ingredients) was not sufficient, or the effect itself was not satisfactory.

[Means for solving problems]

The inventors of the present invention have made extensive studies to solve these drawbacks, and have found that when a specific compound is added to a synthetic resin, the above
Alternatively, they have found that they exhibit extremely excellent effects for the purpose (2) and are also extremely excellent in heat resistance during processing, and have completed the present invention.

That is, the present invention relates to the general formula (I) [wherein is an alkyl group having 1 to 22 carbon atoms, H1, R2
are respectively ethylene or tetrapyrene, or a mixed alkylene group containing two or more of these - ・m and n are integers of 1≦m+n≦30 ・p+Q are integers of 1≦p+q≦30 ・X is -OH-, -8O2-.

A heat-resistant modifier for synthetic resins consisting of a compound represented by a group consisting of H 3 -O-, -O-, -S-; It provides quality supplements.

[Effect]

Specific examples of the compound of formula (1) according to the present invention are as follows.

(1) In formula (1), A = O, Hl, Y =
-(aH2)4-5x = -aH-1R1= -OH
0H-1R2= -0H20H2-1222 m + n , , = 5, p + q = 25 (hereinafter abbreviated as the compound of the present invention) (2) In formula (I), A = 018H57, y =
-(aH2)4-1OH3,OH5 m+n= 10. p10q=20 (hereinafter abbreviated as the compound of the present invention) (3) In formula (1), A = C, Hl, Y =
-(aH2)8-1ca.

m + n = 15, p + q = L5 (hereinafter abbreviated as the compound of the present invention) (4) In the formula (R), A'' Cl8H37, Y =
-0'H= C1H-1rB -)-n == 2 0
, p-)-q=10 (hereinafter abbreviated as the compound of the present invention) (5) In formula (1), A = OH3, Y = -(
OH2)4-1x =-s-1R--(3H20H2-
1R2=-OH20H2-1m+n=25, p10q=5 (hereinafter abbreviated as the compound of the present invention) In the compound of formula (r) according to the present invention, the number of carbon atoms in A and the number of added moles of alkylene oxide (m +n)
and (p+q) within the above range will conversely improve the lipophilicity of a compound with a large number of carbon atoms. On the other hand, alkylene oxide is generally hydrophilic and has the property of improving hydrophilicity as (m+n) and (p+q) increase.

Therefore, the number of carbon atoms in a person, (m+n) and (p+q) can be set arbitrarily! ! II! 1, it is possible to appropriately balance hydrophilicity and hydrophobicity. This field is very important for modifiers for synthetic resins; for example, for relatively highly hydrophilic (high cohesive energy density) polyamide resins and polyacrylonitrile, relatively hydrophilic modifiers are required. A quality agent is appropriate. In addition, for those with intermediate hydrophilic-lipophilic properties such as polyethylene terephthalate, polybutylene terephthalate, and polyalkyl acrylate resins, use the above-mentioned modifier)-IP modifier with low hydrophilicity. Agents are preferred. Furthermore, for hydrophobic resins such as polyolefins and vinyl tetradanide resins, even more hydrophilic /J
Small modifiers are suitable. In this way, the modifier of general formula
It has the advantage that it can be selected from a wide range by appropriately adjusting and (p1q).

Generally, in the processing of the above-mentioned resins, a modifier is usually added to the molten resin, and the modifier is exposed to high temperatures of 150C to 300C. For this reason, the modifier often evaporates or decomposes, producing smoke and coloring, which impairs the hue of the product. The modifier of formula <I) according to the present invention has excellent heat resistance, and hardly generates smoke or discolors when heated.

In order for the synthetic resin modifier according to the present invention to exhibit its intended performance, it is necessary to use 100 parts of resin (based on weight, the same applies hereinafter).
0.1 to 5.0 parts, preferably 0.2 to 6.0 parts.
It is necessary to add 0 parts. If it is less than 0.1 part, the effect will be reduced to such an extent that it is hardly expected, and if it is more than 5 parts, the physical properties of the resin will be adversely affected.

The modifier for synthetic resins according to the present invention may be added to synthetic resins at the time of resin production or at an appropriate step after production, or it may be mixed and added to resin pellets or resin compounds after resin processing. Also good. In any case, it provides a satisfactory effect during the molding process and imparts excellent performance to the molded product after the molding process. Further, the effect is exhibited regardless of the shape of the molded product, and the object of the present invention is achieved. The method for molding the resin to which the synthetic resin modifier of the present invention is added can be the same as the method for molding the resin without the addition. That is, the resin can be molded by injection molding, extrusion molding, blow molding, calendar molding, etc. under the optimum processing conditions for the resin.

Thermoplastic synthetic resins can generally be used as the target synthetic resin for the heat resistance modifier for synthetic resins according to the present invention, but polyethylene, polypyrene, polybutylene,
Polyolefin resins such as polyimbutylene, copolymers of these polyolefin resins and polymerizable vinyl monomers such as vinyl acetate, vinyl propionate, vinyl benzoate, acrylic acid, methacrylic acid, acrylic esters, and methacrylic esters, or polystyrene, As , AB8 and other styrene resins, polyester resins such as polyethylene terephthalate and polybutylene terephthalate, polyamide resins, polyhalogenated vinyl resins such as polyvinyl chloride resin, polyacrylonitrile, polyvinyl carboxylate, and polyacetal.

〔Effect of the invention〕

The heat resistance modifier for synthetic resins according to the present invention is effective for the above synthetic resins, but antistatic agents include polyolefin resins, styrene resins, polyester resins, and polyvinyl chloride resins, and non-droplet agents include polyolefin resins. It is particularly effective for copolymerized polyolefin resins and flexible polyvinyl chloride resins. Further, as a surface lubrication improver, it is effective for polyacetal, polybutylene terephthalate, etc., and as a color tone improver (coloring material dispersant), it is effective for all resins. In addition, styrene resins are used as lubricants and mold release agents.
It is effective in processing polyvinyl chloride) and is particularly effective as a crystallization accelerator in processing polyethylene terephthalate.

〔Example〕

The present invention will be specifically explained below with reference to Examples.

Example 1 Low density polyegurene resin (Sumikasen F223-1)
The compounds shown in Table 1 were added to the mixture, and a film was produced in a conventional manner using an extruder at 200C. A summary of the film's antistatic property (surface resistance), drop-free property, and heat resistance (smoke generation, film coloring) was as shown in Table 1 below.

(Note 1) Antistatic properties are determined by measuring the surface resistivity at a temperature of 20C and 45%RH.
Measurements were taken after 3 days under these conditions. When the value is about 10129/mouth or less, it is recognized that there is a sufficient antistatic effect for practical purposes.

(Note 2) The non-droplet effect was determined visually by covering the top of a beaker containing water with a film and observing the cloudiness of the surface due to water droplets after 60C 7 days.

5... Water droplets spread well and the entire surface of the film is uniformly wetted 3... Large, developed water droplets adhere to the entire surface 1... Very thin water droplets adhere to the entire surface and are opaque (Note 3) Extruder The smoke-emitting property (heat resistance) was determined by visually observing the vicinity of the dice.

○...Almost no smoke generation was observed. Δ...Slight smoke is observed ×...A large amount of smoke is introduced. (Note 4) The coloring property of the film was visually compared with that of a film without additives.

○...Equivalent to the non-additive productΔ...Slightly inferior to the non-additive product It was found that panester and the like are superior in antistatic properties, drip-free properties, and heat resistance (smoke generation and film coloring).

Example 2 The compounds shown in Table 2 and the coloring material (Sumiplast Color Orange HRP
) After adding 0.296, it was molded using an injection molding machine at a cylinder temperature of 200 to 230C. Antistatic properties, color tone,
The results of heat resistance (smoke generation) are summarized in Table 2 below.

Table 2 (Note 1) Same as Example 10 (Note 1) (Note 2) Same as Example 1 (Note 3) The results show that the product of the present invention has better antistatic ability and higher density due to improved colorant dispersion than the comparative compound. It was found that the color effect was excellent and the smoke generation during processing was also excellent.

Example 3 The compounds shown in Table 3 were added to PET resin (Toyobo RY-553), and then melted and mixed in an extruder. The resulting strands were cooled with water and cut into pellets. This pellet was heated to 16 C/Win using an n5c (differential calorimeter), and the temperature was lowered to determine the crystallization temperature (Tea) at the time of heating and 300 C/Win.
After melting at C for 5 minutes, the crystallization rate (T
O300) was measured. The higher the crystallization rate, the higher the To500 and the lower the Toe. The measurement results are shown in Table 3 below.

Table 3 Compound of the present invention ■ 1.0 120 210 Compound of the present invention ■ 1.0 108 20808 Compound of the present invention ■ 1,0
106 20909 Invention ■ 1-Of08 214
From this result, it can be seen that PE to which the compound of the present invention was added
It can be seen that the crystallinity of the T resin is higher than that of the additive-free product. In other words, it can be said that the processability of extrusion molding and injection molding has improved. Further, when the compound of the present invention was added, no fuming or coloring was observed during processing.

Example 4 The compounds shown in Table 4 were added to polyacetal (Duracon M90-02), and then molded by injection molding. The coefficient of dynamic friction was measured using a friction test device that continuously rotates between the end faces of a cylinder (according to the method in "Lubricity of Plastic Materials" by Akira Yamaro, Sanbu, Nikkan Kogyosha, published in 1982, page 47). Face-to-face pressure o,
a 3kg t/cri2. Speed 6.2c
The measurement results at m/sec, 2 DC and 60% RH were as shown in Table 4 below.

Table 4 From the results, it was found that the compound of the present invention improves surface lubricity.

Applicant's agent Kaoru Furutani

Claims (1)

[Scope of Claims] 1 General formula (I) [In the formula: -Ah is an alkyl group having 1 to 22 carbon atoms.R and R are each ethylene or pyrene, or a mixed alkylene group containing two or more of these. m, n are integers such that 1≦rrr + n≦30・p, q
is an integer of 1≦p+Q≦30' X #1-OH-e -8'02- #0H. A heat resistance modifier for synthetic resins comprising a compound represented by a selected group (Y is a dibasic acid residue having 2 to 10 carbon atoms). 2 The synthetic resin is polyolefin, borino-rodanized vinyl, AB8. The heat resistance modifier for synthetic resins according to claim 1, which is a synthetic resin selected from the group consisting of polystyrene, polyacrylonitrile, polyvinyl carboxylate, polyamide, polyester, polyacetal, and copolymers thereof.