JPS6093779A - Connector - 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 The present invention relates to a connector using a novel material.

Currently, various plastic connectors are used to connect electrical and electronic equipment circuits. Some plastic materials have insufficient heat resistance, causing problems with deformation due to heat generation during use, and some have poor impact strength.
11116 also has problems with flammability.

The present inventors conducted various studies on a new 1M1J connector material with excellent heat resistance, and found that if a specific aromatic polyester copolymer was used as a connector material, it would have the disadvantages of conventional products as described above. They discovered that it was possible to obtain a product with significantly superior performance without the above, and after further research, they finally completed the present invention.

That is, the connector of the present invention has general formulas (A), (B), and (0) (in formula (A), the carbonyl groups are in the meta or para position, and in formula (13), the oxygen atom is in the SO2 group). In formula (a), the oxygen atom is in meta or para position with respect to X.X in formula (0) is a divalent hydrocarbon group having 1 to 10 carbon atoms, -〇-1-〇〇-1-3-1-so- or -802-, and a is 0 or 1. It, 〜几 each independently represent hydrogen, carbonization having 1 to 8 carbon atoms. Indicates a hydrogen group or a halogen atom.However, when XIJ''-5O2 and a is 1, all of R1-R4 are not hydrogen at the same time.A polymer consisting of structural units represented by When the number of structural units in existence is nA, river 3, large, nb/7
182 0.04~106 7LCZ ycA" 0.04~1.06 (le b +
nc ) / 7LA = u, q The aromatic polyester copolymer represented by q ~ 110 alone, or the aromatic polyester coj5HQ body and polyalkylene thirephthalate-Ml is a connector made of a resin composition such as polycarbonate. .

The aromatic polyester copolymer used in the present invention is produced by an interfacial polymerization method or a melt market method using a dicarboxylic acid component represented by the general formula (A) and a bisphenol component represented by the general formulas (B) and (a) as main raw materials. It is listed as a de-no-logenated water material that has been prepared by applying known methods such as the solution method using tertiary amines.

Specifically, examples of the dicarboxylic acid component corresponding to general formula (A) include isophthalic acid and/or terephthalic acid, dichlorides and diesters thereof, and the like.

Examples of bisphenol components corresponding to general formula (E) are evabis(4-hydroxyphenyl)sulfone, bis(ro-hydroxyphenylsulfone), and 6-hydroxyphenyl-4-hydroxyphenylsulfone.

Furthermore, examples of bisphenol components corresponding to formula (0) include bis(4-hydroxyphenyl)methane, 1.1-
Bis(4-hydroxyphenyl)ethane, 2,2-bis(4-hydroxyphenyl)propane, and the like.

The above-mentioned aromatic polyester copolymer is used for the connector in the present invention, but polyalkylene terephthalate, polycarbonate, glass copolymer, etc. may be used in combination to improve the physical properties and chemical properties. It is also possible.

Polyalkylene terephthalate includes toethylene glycol terephthalate, 1,3-furopanediol, 1,4-
It is a polyester with alkylene glycol such as butanediol, such as polyethylene terephthalate, polypropylene terephthalate, polybutylene terephthalate, etc., and its usage noise is 60 weight units or less, preferably 2 to 25 weight units of the total resin composition. % is appropriate. If the amount used is too small, mechanical and chemical damage will occur.
The effect of polyalkylene terevitrate on molding processability etc. cannot be improved, and if the amount is too high, the inherent heat resistance of the aromatic polyester copolymer may not be maintained (at a less preferred temperature).

Polycarbonate is produced from bisphenols typified by 2,2-bis(4-hydroxyphenyl)propane and carbonate precursors typified by phosgene or diaryl carbonate.
is less than 60 times the total amount of the resin composition, preferably 2 to
40% by weight is suitable. The control length for the amount used is determined by the same reasons as for polyalkylene terephthalate, but since polycarbonate has better heat resistance than polyalkylene terephthalate, its usage noise is set somewhat higher than that of polyalkylene terephthalate. Is possible.

Various types of glass fibers are available depending on the alkali content (Na2O) and fiber length, but any of these can be used and is not particularly limited. The appropriate amount is 40% by weight, preferably 5 to 30% by weight of the total amount of the resin composition. If the usage noise is too low, the original reinforcing effect of glass fiber cannot be obtained, and if it is too high, the melt flowability of the resin composition will deteriorate, making it impossible to easily process the injection IA shape, and the molded product will have a surface + M shape. It gets worse in the morning too.

If necessary, pigments, powders, powders, fillers, extenders, stabilizers, lubricants, etc. may be used to improve thermal stability, +IK, self-lubricating properties, surface strength, etc., and for coloring and other purposes. It is also possible to use various additive IJO agents together.

For the addition and mixing of polyalkylene terephthalate, polyalkylene terephthalate, polycarbonate and/or glass fiber ML, (, Alternatively, it is also possible to use a method of producing or processing a masterbatch containing a high concentration of polycarbonate.

Thus, a connector of the present invention (11) can be easily molded using the aromatic polyester co-merged by molding.

The connector of the present invention has excellent flame retardancy of I#I~(1/1-).

Since it uses a lot of aromatic polyester co-component, it has very good tI' characteristics as a connector.

Hereinafter, the present invention will be explained in Section 4 using an actual example.

In this example, parts by weight are shown unless otherwise specified.

The logarithmic viscosity η is the flow time f of a polymer solution dissolved in a mixed solvent of phenol/tetrachloroethane (weight ratio 6/4) to a concentration of 0.5 g/dl.

The flow time difference 2 of only the mixed solvent was measured using an Ubbelohde viscometer and calculated using the following formula.

η7. Crown = (110,5)J! ,,,1 Example 1 A dichloromethane solution of mixed acid chloride with a molar ratio of terephthaloyl chloride and isophthaloyl chloride of 1:1, 2,2-bis(4-hydroxyphenyl)propane and bis(4- A weak Group 6 polyester copolymer was produced by interfacial polymerization in a room pot using an alkaline aqueous solution with a molar ratio of 1:1 (hydroxyphenyl) sulfone.

The logarithmic viscosity of the obtained polymer was 0.56.

This powder was extruded into pellets using an extruder at a cylinder temperature of 520°C. Pour this pellet into 7 cylinders at a temperature of 3
The connector was made by injection molding under the conditions of 50 to 580'C and a mold temperature of 150C. This product was transparent and had no silver, sink marks, flow marks, etc. and was excellent. In addition, from this Bennod to AST1 under the same molding conditions.
Prepare a test piece specified in 1 and measure various physical properties. Heat deformation temperature: 205'"C (D-648), notched Izot impact strength: 23 kg・cm/Cm (1)
-256), tensile strength a 6 ok/d (D-63
,s), critical oxygen index 44 (32 Gakatsu, D-2863
), and this one has good properties as a connector! , it can be seen that

Example 2 Aromatic polyester copolymer powder 70 used in Example 1
In one part, 15 parts of dry powder of pellet-shaped polyethylene terephthalate 1 (manufactured by Toshi Penot, Ross J (1'+iA'j, Toshishiku Co., Ltd.)) and a glass short powder were added.
*Who (6 fighters, aspect ratio 25 II) After thoroughly stirring 15 parts in a tumbler, I turned it into a paste.

Next, the cylinder temperature was set to 540 to 57 by injection molding machine.
When a connector was molded under the conditions of 0°C, mold temperature i, '+IJ'C, an excellent product similar to that of Example 1 was obtained.

The composition from which this molded article was obtained had a heat distortion temperature of 208"C, a notched Izot impact strength of 16 to 9.Cm//Cm, and a maximum tensile strength of 900 kg/cri.

Example Aromatic polyester copolymer powder 70 used in Example 1
Part f (, Polycarbonate [Panlite ■.

30 parts of a dry powder of -123DJ (Commercial A°C, manufactured by Yodai Kasei Co., Ltd.) was thoroughly mixed using a Henschel mixer.

This powder is pelletized and then molded using an injection molding machine with a cylinder temperature of 630-360'C and a metal powder temperature of 13°C.
Mold the connector at 0°C.

Same as Example 1, V koyu J+, tamono, 'l” 4!j
C, +λ again. 61. Heat deformation of the composition from which three molded products were obtained.
1 (S- is 1a OC, notched isot
Strong dust is 28 to 9・Cl1l/C1n, tensile strong dust is 820
It was ky〆ii.

Comparative Example 1 A dichloromethane solution of mixed terephthaloyl chloride and isophthaloyl chloride with a molar ratio of 1:1 and 2,2-bis(4'-hydroxyphenyl)
Aromatic polyester copolymers were produced by interfacial polymerization using an alkaline aqueous solution of propane. b4) The logarithmic viscosity of the obtained polymer was 062. This powder is pelletized and injection molded at a cylinder temperature of 320 to 350.
The connector was molded under conditions of 120'C and a mold temperature of 120'C.

The heat distortion temperature of this molded product is 172'C (D-648), and the notch f=I isot impact strength is 30 to 9 cm/c.
The molded product had a tensile strength of 710 ky/crl and a limiting oxygen index of 34 (3.2 mm thickness), which were inferior to the molded product obtained in Example 1.

Comparative Example 2 An aromatic polyester co-electrode was prepared using a dichloromethane solution of a mixed acid chloride with a molar ratio of terephthaloyl chloride and isophthaloyl chloride of 1:1 and an alkaline aqueous solution of bis(4-hydroxyphenyl) sulfone by the Kaimon method. Although #1 was reported, a high molecular weight product could not be obtained and it was unsuitable for use as a material for connectors.

Claims (1)

[Scope of Claims] [1] General formulas (A), (B) and (0) [In formula (g), the carbonyl groups are in meta or para positions,
In formula (B), the oxygen atom is at the meta or para position with respect to the 802 group, and in formula (0), the oxygen atom is at the meta or para position with respect to X. X in formula (0) is a divalent hydrocarbon group having 1 to 10 carbon atoms, -o-1-oo-1
-5-1-so- or -5o2-, and a is zero or 1. R to R4 each independently represent hydrogen, a hydrocarbon group having 1 to 8 carbon atoms, or a halogen atom. However, when X is 802 and a is 1, all of R1 to R4 are not hydrogen at the same time. ] In a polymer composed of structural units represented by, the number of each structural unit in one polymer is nAq? Ll), 71c, nbZrLA2004~1.06? L(/ Hiro”” (1,1) 4~i, 06(71
, b+-nc)/7LA-099 to 110 alone, or a 1ffJ resin composition of the aromatic polyester copolymer and polyalkylene terephthalate or polycarbonate. connector. (2) The connector according to claim 1, wherein the resin composition contains 30% by weight or less of polyalkylene terephthalate based on the total amount of the resin composition. (3) The connector according to claim 1, wherein the resin composition contains not less than 60% by weight of polycarbonate based on the total amount of the resin composition. Connector 0 according to claim 1 containing less than the weight ratio