JPH0245543A - Vinyl chloride resin composition - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

Detailed Description of the Invention [Industrial Application Field 1] The present invention relates to a vinyl chloride resin (3) adhesive composition. This relates to a polyvinyl chloride-based rubber composition that has improved impact resistance and moldability (thermal fluidity).

E Conventional technology In general, hard vinyl chloride jM 1171 has excellent physical properties such as rigidity, chemical resistance, oil resistance, weather resistance, aging resistance, and flame retardancy, but on the other hand, it lacks sufficient plasticity and is difficult to process. In particular, physical properties such as 1 street 9 f'l, cold resistance, and heat resistance are not necessarily good.
There is a problem with -4<. For this reason, various modification methods have been proposed, but even if a certain physical property is improved, in many cases, the ratio of salt to vinyl (fat: 1, thermal properties: 11) will increase, and there is no method that requires both. Ta. In particular, as a method for improving impact resistance, for example, acrylonitrile-butanoene-styrene co-IT! association (hereinafter referred to as A [3S 434 fat),
Menal methacrylate butanoene-styrene copolymer (hereinafter referred to as M 11 S 1j+ 11f), ethylene-vinyl acetate copolymer (hereinafter referred to as EV A), chlorinated polyethylene (hereinafter referred to as CPF), 141
A method is known in which 4 types of polymers such as (referred to as line 11) are blended with vinyl chloride resin.

Problem to be Solved by the Invention 1 However, although ABS resin and M2S resin can modify the impact resistance of vinyl chloride TJ4 resin without impairing transparency, the resin contains a double bond, so it has a problem of poor weather resistance.

Also, CI) IE a(Ill'?, EV A
LFF1111 etc. have poor iron properties (although the iron content is a concern, in order to improve the impact resistance it is necessary to combine multiple amounts of Eimu 4 fats, which not only increases the cost of the product but also increases the chloride content obtained). There is a problem j:f that the strength properties such as tensile strength of the vinyl resin composition are reduced.

[Means to Solve the Problem] In view of the problem described in -1- of the prior art, the present inventors have conducted extensive studies to improve the impact resistance of vinyl chloride resin. The present invention was completed by discovering that by blending a small amount of CPE +J (fat with a specific polyethylene resin), the impact resistance and moldability (thermal fluidity) can be greatly improved. reached.

Although it is a nail, the fork 11 of the present invention is vinyl chloride-based (j (fat 1 (
) 0 J'1. L, chlorinated polyethylene 51
0 weight tit part and density are 0,! ]] H/can
] The following ethylene-a-olefin 1 combination 1 ”-
The present invention consists in a vinyl chloride yarn rJJ resin composition containing 10Ij part.

The present invention will be explained in more detail below.

The vinyl chloride resin used in the present invention is generally made by polymerizing vinyl chloride monomer 111 with a degree of polymerization of 400·-ν4000, preferably 6 (10゛·,
1400 hosopolymer, salt 1 hibinyl It IAC
Copolymers with a degree of polymerization of 300 and 3,000, such as vinyl chloride-vinyl acetate copolymers, ethylene, propylene, acrylic esters, vinylidene chloride, and other copolymers that can be copolymerized with vinyl chloride and chloride. Examples include a co-8n polymer with vinyl, a copolymer obtained by grafting vinyl chloride onto an ethylene-vinyl acetate copolymer, and the like.

Next, as a chlorinated polyethylene, salt cable filter i fTi (2
5...50 tonne weight%, preferably; (0...15 width%,
More preferably, those having an amount of 30%, I, 40% are used.

Furthermore, the ethylene-α-olefin co-Hf<coupling has a degree of 0.91 g/cIj2 or less, preferably 0.86% 0.91 bi/CI6', more preferably 0.88''-0,918 /c+a' is used.If the density of the ethylene-me olefin copolymer is greater than 1 unit, it is preferable because the synergistic effect of impact resistance and thermal fluidity is small. No, the enare/-α
Although there is no limit to the method for producing the A-form, an example is a method of copolymerizing ethylene and a-olefin under high pressure using a Ziegler type catalyst. As α-olefin, carbon number is 3.
-8 a-olefins are used, e.g. propylene,
Butene-1, hexene=1,4-methylbe/thane-1,
Octene-■ etc. are found in the throat. Furthermore, 6 types of tene such as butanoene, 1.4-hexanoene, 1.5-hexanoene, vinylnorbornene, ethylidene norbornene, and nonclopentanoene are added as ingredients -C
Both may be combined. Of course, commercially available products include CdF Ch? N0R8O to'LEX (FWI(in(1,
'W1900, MW192 (1, SMW2440.L
W2220.1. W25 (1(1, I-W255()
)0), 11 pieces are L mountain from Unicar Company'(Iru7shi/
Xrenone (DFDA1137.DEDAl 138.
DI': FD+210, DIEFl')9042), 3
．． No. 1: (J'Yuruka'i' tf, Gara upper molded ori 77 (A407I 5. A 4 fl 9 It
, 1J (1180, Po 480), etc., the 13 fat composition of the present invention contains 110 parts by weight of chlorinated polyethylene, Preferably, the ethylene-me-olefin copolymer is blended in a ratio of 2=-8 to 1 part by weight and 1.10 parts by weight, preferably 1.28;

If the blending amount of chlorinated polyethylene is less than the lower limit, the effect of improving impact resistance will be insignificant, and if it exceeds the L limit, the mechanical strength will deteriorate, which is undesirable.
-If the olefin co-bonding resistance is less than the lower limit, the synergistic effect on impact resistance will be small, and the -12 limit! ) If the amount is too large, the impact resistance will deteriorate, which is not preferable.

The composition of the present invention comprises -1- the vinyl chloride monomer,
Chlorinated polyethylene and ethylene-a-olefin copolymer, as well as plasticizers, lubricants, flame retardants, ultraviolet absorbers, oxidation inhibitors, foaming agents, and coloring agents, 1γ ordinary vinyl chloride copolymer. The compounding agents added to the coalescence are mixed as appropriate (11) and made into a tumbler. For mixing, vinyl chloride is usually used, and a mixing device used for the preparation, such as a ball mill, pebble mill, tumble mixer, etc. Ribbon mixers, chie/pump mixers, super mixers, and soybeans are used.In this way, C is obtained. It may be used after mixing with a panburi mixer, a high-intensity continuous shaft mixer, an extruder (4 rm kneading), etc.

Heaven Example 1...5 R,/vinyl chloride resin (vinyl chloride homopolymer, polymerization nozzle 300) + 00 width! I11 part is lead stupefying stabilization 3 streetcar parts, chlorine 1 hypoenalene and ethylene-α-olefin/
Co-conjugation Table IJ) IIζj was added via ζj and combined with i1' for 1 () minute in a blender.

This m compound was rolled milled to form a thickness of (+, 751n+a/-t) after kneading for 15 minutes.
1≧, put 5 sheets of this sheet together t2, and I! ] (1
'C+: li anti-and] 5 (Thermo-compression bonded for 10 minutes under a pressure of 1 kg/cn2, thickness) h 3ta! ^
I created a pre-people board.

Physical property evaluation 1 (ON YARBY impact test ) 7mm; 31o Rin press board used , in accordance with the method of JiSK7111.

■ The sample is a sheet with a thermofluidic thickness (1,75+a+*) cut into a pellet shape of about 211IIa square, and JISK721
Side length is 0, inner diameter lllll6φ, length 10IIIIII
-170°C at a die temperature of 180°C using a split die.
The extrusion rate (70-rate) was measured under a load of kg/elQ2.

Comparative Example 1...73 In Example 1, the type or composition of ethylene-a-olefin combined with 1 or chlorinated polyethylene is 1 in Table 1.
3+' was carried out in the same manner except that 1P and 1 cup were added.

The results are shown in Table 1.

[Effects 1 and 1 Effects of the Invention The vinyl chloride-based O (fat composition of the present invention is a vinyl chloride-based fat, chlorine resin polyethylene, and a density of 0, 91H/c+
By blending the following ethylene-a-olefin copolymers, as is clear from Table 1, the impact resistance and moldability are significantly improved. (In the fat composition, the combination of the polymers listed in 1 and π leads to lower product costs, and the industry
``The value of ``is extremely high.''

Patent applicant Mitsubishi Kasei Vinyl Co., Ltd. Attorney L', Atsushi Tanigawa (one idiot)

Claims (1)

[Claims] Vinyl chloride made by blending 1 to 10 parts by weight of chlorinated polyethylene and 1 to 10 parts by weight of ethylene-α-olefin copolymer with a density of 0.91 g/cm^3 or less to 100 parts by weight of vinyl chloride resin. based resin composition.