JPH04146947A - Antistatic and transparent acrylic resin composition - Google Patents

Abstract

PURPOSE:To improve permanent antistatic properties and transparency by compounding an acrylic resin with a specific transparent polyamide elastomer. CONSTITUTION:A polyamide-forming monomer contg. 50wt.% or higher caprolactam, a 6-20C dicarboxylic acid, and a polyoxyethylene glycol having a number-average mol.wt. of 800-3000 are condensed to give a transparent polyamide elastomer comprising 20-45wt.% polyamide segment and 80-55wt.% polyoxyethylene glycol segment and having a relative viscosity at 30 deg.C of 1.5 or higher and a haze value at 1mm thickness of 50% or lower. 100 pts.wt. mixture of 70-97wt.% acrylic resin with 30-3wt.% the polyamide elastomer is componded with 10 pts.wt. or lower at least one antistatic agent selected from the group consisting of a salt of an org. sulfonic acid and a salt of an org. phosphoric acid (e.g. sodidum dodecylbenzenesulfonate).

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention provides a novel antistatic transparent acrylic resin composition, more specifically, a novel antistatic transparent acrylic resin composition, which has excellent permanent antistatic properties, is inexpensive, and has good transparency. For example, acrylic resins and polyamides are suitable as materials that can prevent static electricity in various parts such as lighting equipment, equipment nameplates, meter covers, Urectronics products, home appliances, and OA equipment. The present invention relates to a resin composition containing a elastomer.

Conventional technology Conventionally, acrylic resins have excellent transparency and rigidity, so they have been used for example in electronic products, home appliances, and
It is widely used as a material for various parts such as A-equipment.

However, this acrylic resin has a high surface resistivity and is easily charged by friction, so dirt and dust may adhere to it, damaging its appearance, or may cause undesirable situations in electronic equipment parts due to static electricity. It has drawbacks such as: Therefore, there is a desire to develop a material that retains the excellent properties of acrylic resins and also has antistatic properties.

Methods of imparting antistatic properties to the acrylic resin are well known, such as incorporating surfactants or coating them on the surface. The inhibitor is easily removed by washing with water or rubbing, making it difficult to provide permanent antistatic properties.

Examples of methods for imparting permanent antistatic properties include (
1) A method of kneading a vinyl copolymer having a polyoxy 7 ethylene chain and a sulfonate, carboxylate, or quaternary ammonium salt structure into an acrylic resin (Japanese Patent Application Laid-Open No. 1983-1999)
36237, Japanese Patent Application Laid-open No. 63-63739),
(2) A method of kneading polyether ester amide into methyl methacrylate-butadiene-styrene copolymer (MBS resin) or methyl methacrylate-acrylonitrile-butadiene-styrene copolymer (MABS resin) (JP-A-62-119256) Publications) etc. have been proposed.
Furthermore, (3) an acrylic resin, a polyamide elastomer and a modified vinyl polymer containing at least one functional group such as a carboxyl group, an epoxy group, an amino group, or a hydroxyl group, and if necessary, a rubber graft copolymer. A permanent antistatic resin (Japanese Unexamined Patent Publication No. 1-308444) has also been proposed, which has a polymer added thereto and has excellent surface gloss without delamination.

However, in the method (1) above, the vinyl copolymer blended is expensive because it uses a special vinyl monomer, and the acrylic resin blended with this is inevitably expensive to manufacture. Japanese Patent Publication No. 55-362
The method described in Publication No. 37 has drawbacks such as the amount of vinyl copolymer blended is large and the inherent heat resistance of the acrylic resin is unavoidably reduced. On the other hand, in the method (2) above, amorphous ff polyether esteramide and M
The difference in refractive index with BS resin and MABS resin is set to 02 or less to maintain the transparency of the resulting composition, but there is little freedom in combinations, and polymethyl methacrylate, a typical acrylic resin, has a refractive index difference of 02 or less. The drawback is that it is difficult to match rates and transparency is compromised.

In addition, the antistatic resin of (3) above is an acrylic resin,
By adding a non-compatible polyamide elastomer and a modified vinyl polymer containing functional groups, it improves compatibility, prevents delamination, and imparts a permanent antistatic effect.However, regarding transparency, It's not always satisfying.

By the way, a major feature of acrylic resin is that it has excellent transparency, and when kneading a polymer compound to impart permanent antistatic properties to the acrylic resin, the compatibility is poor and the transparency is reduced. It is often called. Furthermore, even if a material with good transparency is obtained, a sufficient antistatic effect may not be obtained or the heat resistance may be reduced. Furthermore, if a polymer compound with a complicated structure is manufactured in order to exhibit sufficient antistatic effect, the manufacturing cost will increase.
It cannot be made into an inexpensive acrylic resin with antistatic properties.

Under these circumstances, it has been desired to develop an acrylic resin composition that has excellent permanent antistatic properties, is inexpensive, and has good transparency.

The present inventors created an acrylic resin composition with excellent permanent antistatic properties and transparency! After repeated research, we first discovered that a polyamide elastomer with a low hard segment content has good affinity for acrylic resin, is finely dispersed, transparent, and provides a composition with excellent antistatic properties. I found it. However, this polyamide elastomer exhibits a pale yellow color, and acrylic resin compositions containing this polyamide elastomer have the disadvantage of being colored pale yellow.

Problems to be Solved by the Invention Under these circumstances, the present invention provides an inexpensive acrylic resin composition that has excellent permanent antistatic properties, good transparency, and extremely low degree of coloration. Means for Solving the Problem The present inventors have conducted intensive research to develop an acrylic resin composition having the above-mentioned preferable properties. Glycol is used as a soft segment, a polyamide-forming monomer containing caprolactam in a predetermined proportion and a polyamide with carboxylic groups at both ends formed from a specific dicarboxylic acid is used as a hard segment, and the specific polyoxyethylene glycol segment is contained. The polyamide elastomer, which has a certain amount, Heiss number, and relative viscosity, has little coloration and good affinity with acrylic resin, and when blended with acrylic resin in a predetermined ratio, it has excellent antistatic properties and By blending scales that provide a composition that is transparent and has an extremely low degree of coloring, and furthermore a specific compound in a predetermined ratio with the polyamide elastomer, a composition that has even better antistatic properties can be obtained. The present invention was completed based on this finding.

That is, the present invention comprises (A) an acrylic resin, and (B)
(a) a polyamide-forming monomer containing at least 50% by weight of caprolactam, (b) a dicarboxylic acid having a carbon XI of 6 to 20, and (c) a number average molecular weight of 800 to 3,000.
polyoxyethylene glycol segment content of 55 to 80
% by weight, relative viscosity at 30°C of 1.5 or more, and thickness of 1. A transparent polyamide elastomer having a haze number of mrn of 50% or less is contained in a weight ratio of 70:30 to 97:3, and optionally, the (A) component and (B)
A transparent material containing at least one antistatic agent selected from (C) organic sulfonates and organic phosphates in an amount not exceeding 10 parts by weight per 100 parts by weight of the total amount of the ingredients. The present invention provides an acrylic resin composition having antistatic properties.

The present invention will be explained in detail below.

In the composition of the present invention, examples of the acrylic resin used as component (A) include polymethyl methacrylate, polyethyl methacrylate, polypropyl methacrylate, polybutyl methacrylate, polymethyl acrylate, polyethyl acrylate, and methacrylate. (Meth)acrylic acid such as methyl acid-methyl acrylate copolymer, methyl methacrylate-ethyl methacrylate copolymer, methyl methacrylate-butyl methacrylate copolymer, methyl methacrylate-ethyl acrylate copolymer Examples include homopolymers or copolymers of alkyl ester compounds such as methyl, ethyl, propyl, and butyl.

These acrylic resins may be used alone or in combination of two or more, and the manufacturing method thereof is not particularly limited, and known suspension polymerization methods, emulsion polymerization methods, and bulk polymerization methods may be used. Used for legal purposes.

In the composition of the present invention, the polyamide elastomer used as component (B) is (i) a polyamide-forming monomer containing at least 50% by weight of caprolactam (
a) A hard segment obtained from a dicarboxylic acid having 6 to 20 carbon atoms and (c) a polyoxine ethylene glycol having a number average molecular weight of 800 to 3000, and formed from the components (a) and (b). It is a multi-block copolymer with a structure in which a polyamide having carphokyfur groups at both ends and polyoxine ethylene glycol (component (c)), which serves as a soft segment, are linked through ester bonds.

Examples of the polyamide-forming components other than caprolactam in component (a) include laurin lactam, II-aminoundecanoic acid, 12-aminododecanoic acid, hexamethylenediamine-adipate, and hexamethylenediamine-sehanonic acid. salt, hexamethylenediaminedodecanedioate, hexamethylenediamine-inphthalate, etc., and these may be used alone or in combination of two or more.

In order to fully express the transparency, affinity with acrylic resin, and antistatic performance of the resulting elastomer, it is necessary that the content of caprolactam in the polyamide-forming monomer is 50% by weight or more, The amount increases as the molecular weight of polyoxyethylene glycol increases.
In addition, the higher the content of polyamide segments, the more
It is easier to satisfy the above characteristics when the amount is greater than % by weight. Although it depends on the molecular weight of polyoxyethylene glycol, the content of caprolactam in the polyamide-forming monomer is 7.
It is desirable that the content be 0% by weight or more.

In addition, by using caprolactam and other polyamide-forming monomers together, a heterogeneous structure is introduced into the polyamide segment, which improves the transparency and lowers the melting point of the elastomer, or prevents crystallization of the polyamide segment. This brings about effects such as improved fluidity of the composition with the acrylic resin.

The dicarboxylic acid having 6 to 20 carbon atoms as the component (b) may be an aliphatic dicarboxylic acid or an aromatic dicarboxylic acid, such as adipic acid, sepacic acid, etc. , decanedicarboxylic acid, isophthalic acid, terephthalic acid, etc. These dicarboxylic acids may be used alone or in combination of two or more, and the amount used is substantially equal to that of component (c) polyoxyethylene glycol, that is, 0.9 to 1. .1
It is desirable to choose within the range of multiple moles.

Polyamide, which is a hard segment, is related to the elastomer's heat resistance, strength, hardness, and affinity with acrylic resin, and the content of the polyamide segment in the elastomer is 20 to 45% by weight (i.e., polyoxyethylene Glycol segment content is 80-55
(% by weight). If this content is less than 20% by weight, the strength of the elastomer will be low and the mechanical properties will be low when kneaded with acrylic resin.
If the weight percentage is exceeded, when kneaded with an acrylic resin, the affinity deteriorates, cloudiness occurs, and transparency decreases.

Further, antistatic properties are difficult to develop when the polyamide elastomer is completely mixed with the acrylic resin, and it is preferable that the polyamide elastomer is appropriately finely dispersed in the acrylic resin. on the other hand,
If the compatibility is poor, the degree of phase separation will increase, resulting in opacity. If the content of the polyamide segment increases, it becomes difficult to interact with the acrylic resin, but by making the polyamide segment a copolymer, this range can be widened, which is preferable. For example, when the polyamide segment is composed of a copolymer of caprolactam and hexamethylenediamine-adipate, a transparent composition is obtained with a polyamide segment content of 20 to 45% by weight, whereas when caprolactam alone is used, a transparent composition is obtained. When forming polyamide segments, the content is 20 to 35
Weight percent is preferred.

Further, when hexamethylenediamine-adipate is used as a copolymerization component, transparency tends to decrease, so it is advantageous to adjust the caprolactam content in the polyamide-forming monomer to 70% by weight or more. Even if the amount of modification is the same, when the molecular weight of polyoxyethylene glycol increases, the molecular weight of polyhexamethylene adipamide tends to increase, and transparency tends to decrease. Expressed in another index, it is preferable to use hexamethylene diamine-adibate in an amount equal to or less than the mole of polyoxyethylene glycol.

Further, the number average molecular weight of this polyamide segment is usually selected within the range of 400 to 1,500, preferably 500 to 1,200. If the number average molecular weight is less than 400, the melting point will be low and the resulting composition will have poor heat resistance, and if it exceeds 1,500, the transparency of the composition will tend to decrease, which is not preferable.

The polyoxyethylene glycol of component (iii) has a number average molecular weight of 800 to 3000, preferably 1200 to 2.
It needs to be in the range of 500. If the number average molecular weight is less than 800, the molecular weight of the polyamide segment becomes small and solidification becomes difficult, which is unfavorable in the production of polyamide elastomers, while if it exceeds 3,000, the transparency of the elastomer tends to decrease.

The method for producing the polyamide elastomer of the component (B) is not particularly limited as long as it produces a homogeneous polyamide elastomer;
Components (B) and (C) are mixed in such a proportion that component (B) and component (C) are substantially equimolar, and the water in the polymer produced in the reaction is removed from the reaction system. It is preferably 150 to 30 Torr because it is not removed from the system by flowing nitrogen through it or by reducing the pressure to about 700 to 300 Torr.
A method of polymerizing at a temperature in the range of 180 to 280°C, preferably 180°C to 280°C, can be used. In this method, the reaction temperature can also be raised stepwise during dehydration condensation.

At this time, some caprolactam remains unreacted, but it is desirable to remove it from the reaction mixture by distilling it off under reduced pressure. After removing this unreacted caprolactam, the reaction mixture is prepared under reduced pressure, preferably at a temperature of 200 to 300
It is possible to further increase the polymerization by post-polymerizing at a temperature in the range of 230 to 2800C, preferably 230 to 2800C. In the subsequent polymerization, it is advantageous to use a dehydration condensation catalyst such as titanium alkoxide or zirconium alkoxide because the reaction time can be shortened and coloration of the polymer can be prevented. Since these catalysts tend to be deactivated in the presence of water, it is advantageous to add them after unreacted caprolactam is distilled off and water in the reaction system is removed from the system.

By doing so, a transparent polyamide elastomer can be obtained which can achieve a high degree of polymerization in a short time and has an extremely low degree of coloration.

In this reaction method, esterification and amidation occur simultaneously during the dehydration condensation process to prevent coarse phase separation, thereby producing a homogeneous and transparent elastomer. This elastomer has excellent affinity with acrylic resins, and provides excellent antistatic effects and mechanical properties when kneaded with acrylic resins.

In the composition of the present invention, the polyamide elastomer used as component (B) has a haze number of 5 at a wall thickness of 1 mm.
It is necessary to have a transparency of 0% or less, and if the haze number exceeds 50%, the resulting composition tends to have a dull appearance.

The degree of polymerization of the polyamide elastomer used in the composition of the present invention can be arbitrarily changed as required, and the relative viscosity of a metacresol solution with a concentration of 5% by weight/volume measured at a temperature of 30° C. .5 or higher is required. If the relative viscosity is less than 1.5, the mechanical properties are poor, and when kneaded with an acrylic resin, the mechanical properties of the composition may be insufficient. A preferable relative viscosity is 1.6 or more.

Furthermore, in order to increase the thermal stability of the obtained polyamide elastomer, heat-resistant stabilizers such as various heat-resistant anti-aging agents and antioxidants can be used, and these can be used at any stage of polymerization, such as the initial, middle, or final stages. May be added. Moreover, it can also be added after polymerization and before kneading with the acrylic resin.

Examples of the heat-resistant stabilizer include N,N'-hexamethylene-bis(3,5-di-t-butyl-4-hydroxycinnamic acid amide), 4,4'-bis(2,6-di-t-butyl-4-hydroxycinnamic acid amide),
-butylphenol), 2,2'-methylenebis(4-
Various hindered phenols such as (ethyl-6-t-butylphenol): N,N'-his (β-naphthyl)
-p-phenylenediamine, N,N'-diphenyl-p
- Aromatic amines such as phenylenediamine and poly(2,2,4-trimethyl-1,2-dihydroquinoline):
Examples include sulfur compounds and phosphorus compounds such as dilaurylthiodibrobiotin.

In the composition of the present invention, the acrylic resin as the component (A) and the polyamide elastomer as the component (B) have a weight ratio of 70:30 to 973, preferably 80:2.
0 to 95:5, more preferably 85:15 to 9
It is necessary to mix them in a ratio of 5:5. If the amount of component (B) is less than 3% by weight based on the total weight of components (A) and (B), a sufficient antistatic effect cannot be obtained, and if it exceeds 30% by weight, rigidity tends to decrease. Bitten.

The acrylic resin composition thus obtained has excellent antistatic properties and transparency, and when used as a transparent acrylic resin composition, the haze number at 2 nm thickness is 15%.
The following are preferably used.

The resin composition of the present invention can be produced by kneading a mixture of components (A) and (B) using a known method, such as a bumperley mixer mixing/roll, a -screw or twin-screw extruder, etc. It can be used.

The kneading temperature at this time is preferably in the range of 180 to 280°C.

In the present invention, an organic sulfonate or an organic phosphate can be used as component (C) to further exhibit the antistatic effect. Examples of the organic sulfonates and organic phosphates include aromatic sulfonic acids such as dodecylbenzenesulfonic acid, p-toluenesulfonic acid, dodenyl diphenyl ether disulfonic acid, naphthalene sulfonic acid, and alkyl sulfonic acids such as lauryl sulfonic acid. Examples include alkali metal salts and alkaline earth metal salts of organic phosphoric acids such as sulfonic acid, diphenyl phosphite, and diphenyl phosphate; among these, alkali metal salts are preferred, particularly sodium salts and karyrum salts. is suitable.

One type of component (C) may be used, or two or more types may be used in combination for G1, and the blending amount is determined by the amount of the acrylic resin as the component (A) and the polyamide elastomer as the component (B). 10 parts by weight or less per 100 parts by weight of the total amount,
It is preferably selected in a range of 0.1 to 5 parts by weight. If the amount exceeds 10 parts by weight, undesirable situations may occur, such as a decrease in rigidity, roughening of the surface when molded, and coloring during molding.

The resin composition of the present invention may contain other ingredients, such as dyes, ultraviolet absorbers, weathering agents, heat stabilizers, antioxidants, lubricants, plasticizers, mold release agents, and polymers, to the extent that their physical properties are not impaired. Oxyethylene glycol and other polymers, etc.
It can be stored in any process such as the crosstalk process or the molding process.

The acrylic resin composition of the present invention thus obtained can be molded by known methods generally used for molding thermoplastic resins, such as injection molding, extrusion molding, blow molding, and vacuum molding. can do.

Effects of the Invention The acrylic resin composition of the present invention has an acrylic resin and a polyoxyethylene glycol segment content of 55 to 55%.
It contains 80% by weight of transparent polyamide nylastomer, and is characterized by excellent permanent antistatic properties, good transparency, extremely low degree of coloration, and low cost. For example, lighting equipment, equipment nameplates,
The meter cover is used as a cover for electronic products,
It is suitably used as a material that can prevent electrostatic charging in various parts of home appliances and OA equipment.

Examples Next, the present invention will be explained in more detail with reference to examples.
The present invention is not limited in any way by these examples.

The physical properties of the composition and elastomer were determined according to the following methods.

(1) Tensile strength at break of elastomer Measured at 23° C. and 55% RH according to ASTM D638j.

(2) Relative viscosity of elastomer Measured in metacresol at 30°C and 10.5% by weight/volume.

(3) Using a molded sample with a surface resistivity of the composition of 50X 50X 2 vrrA, when 500V was applied using an electrometer TR8651 and electrodes manufactured by Atopan Test Co., Ltd. and a shield box and electrode holder manufactured by Ando Electric Co., Ltd. The surface resistivity was determined by measuring the resistance value.

(4) Total light transmittance and haze number of composition 50X 50
A molded sample of 2 mm in diameter was measured using a haze meter manufactured by Nippon Denshoku Kogyo Co., Ltd. according to the method of JIS K-7105.

(5) Flexural modulus of composition Measured at 23° C. and 55% RH using a 1/8 inch thick test piece according to ASTM D-790.

(6) Yellowness of the composition For molded samples of 50X 50X 2 mm, JIS K-71 was measured using a colorimeter made by Nippon Denshoku Kogyo Co., Ltd.
It was measured by a transmission method according to the method of 03.

Production Example 1 Production of polyamide elastomer A-1 300m (2 separable flasks equipped with a stirrer, nitrogen inlet, and distillation tube were charged with 84.h of polyoxine ethylene glycol with a number average molecular weight of 1490 and 11.h of sebacic acid)
, hexamethylenediamine-adipate], 3 h, 35.7 g of caprolactam and 0.2 h of pentaerythrityl-tetrakis C3-(3,5-di-butyl-4-hydroxyphenyl)propione) were charged, and nitrogen was added. 4 at 250°C while flowing at 30TtIQ/min.
Time reacted.

Next, the pressure of the reaction system was gradually reduced, and unreacted caprolactam was distilled off. After nitrogen was introduced and the pressure returned to normal pressure, 0.2 h of tetrabutoxyzirconium was added, and the pressure was immediately reduced to 260°C. A transparent polyamide elastomer was obtained by reacting with Thor for 1 hour.

This polyamide elastomer contains 72% by weight of polyoxyethylene glycol segments and has a haze number of 11.
%, relative viscosity 2.2, tensile strength 230 kg/Cm2, and shore hardness 80A).

Production Example 2 Production of Polyamide Elastomer A-2 In Production Example 1, the amount of hexamethylenediamine adipate was 7.4. , except that the amount of caprolactam was changed to 28.79 and the flow rate of nitrogen was changed to 80 mQ/min, the reaction was carried out in the same manner as in Production Example 1, and the polyoxyethylene glycol segment content was 70% by weight, the haze number was 15%, and the tensile strength was 240k.
A transparent polyimide elastomer having a relative viscosity of 2.2 g/cm2 and a hardness of 74 A was obtained.

Production Example 3 Production of Polyamide Elastomer A-3 In the same apparatus as in Production Example 1, polyoxyethylene glycol with a number average molecular weight iL of 1.980 was added. Og, sebacic acid 8.6g
, hexamethylenediamine adipate amount: 9, caprolactam: 43. h and N,N'-hexamethylene-bis(
3,5-di-t-butyl-4-hydroxycinnamic acid amide) for 0°2h, 250°C, nitrogen flow rate 80mQ
/min for 4 hours.

Next, the pressure of the reaction system was gradually reduced to distill off unreacted caflactam, and nitrogen was then introduced to return the pressure to normal pressure. Tetrabutquine zirconium tube was added for 2 hours, and the pressure was reduced again to 260°C for 1 hour. A transparent polyamide elastomer was obtained by reacting with Thor for 1.5 hours.

This polyamide elastomer contains 72% by weight of polyoxyethylene glycol segments and has a haze number of 4.
3%, relative viscosity 2°1, tensile strength 235kg/cm2
．． 7yoa hardness was 83A.

Production Example 4 Production of Polyamide Elastomer A-4 Into the same apparatus as in Production Example 1, 72.0 g of polyoxy/ethylene glycol having a number average molecular weight of 1490, 98 g of sepanonic acid, 3.89 g of hexamethylene diamine adipate, and 59 g of caprolactam were added. and 0.24 g of pentaerythrityl-tetrakis [3-(3,5-di-t-butyl-4-hydroquinphenyl)propionate:] were charged and reacted under the same conditions as in Production Example 3.

Next, the pressure of the reaction system was gradually reduced to distill off unreacted caprolactam, and nitrogen was then introduced to return the pressure to normal pressure. Tetrabutquin titanium was then added for 0.2 h, and the pressure was reduced again to 260°C and 1 torr. A transparent polyamide elastomer was obtained by reacting for 3 hours.

This polyamide elastomer contains 59% by weight of polyoxyethylene glyfur segments and has a haze number of 15.
%, relative viscosity 1.95, tensile strength 290 to 9/cm2,
Shore hardness was 90A.

Production Example 5 Production of Polyamide Elastomer A-5 Polyoxyethylene glycol 72. h, terephthalic acid 6.
h, 36.6 g of caprolactam and 0.24 g of N,N'-hexamethylene-his (3,5-g-t-butyl-4-hydroquine cinnamic acid amide) were charged, and 30 mQ of nitrogen was charged.
The reaction was carried out at 250° C. for 4 hours while flowing at a flow rate of /min.

Next, caprolactam was distilled off under reduced pressure, and then the pressure was returned to normal pressure with nitrogen. Tetrabutoxyzirconium 0.24
9 was added, and the pressure was reduced again to 4 at 260°C and 1,1-l.
A transparent polyamide elastomer was obtained by reacting for -5 hours.

This polyamide elastomer contains 71% by weight of polyoxy/yylene glycol segments and has a haze number of 7%.
, relative viscosity 1.9, tensile strength 220 kg/cm2, and Noyoa hardness 85A.

Production Example 6 Production of Boryamide Elas] Mar A, -6 In a stainless steel 10Q autoclave equipped with a nitrogen inlet, a distillation tube, a stirrer, and a catalyst charging pot, polyogine ethylene glycol 2 with a number average molecular weight Ji of 1490, 6
8 kg, Sehann r 11.363 g, hexamethylene cyamiso-adipate 47.1 g. Caprolactam 1.
5. Th9 and pentaerythrityl-tetrakis (3-
(3,5-di-t-butyl-4-hydroxyphenyl)
Propionate] 89 was charged and reacted at 250° C. for 3 hours while flowing nitrogen at IQ/min. Next, unreacted caprolactam was distilled off under reduced pressure, and a solution of tetrabutoxyzirconium 89 dissolved in 50 g of caprolactam was added to the reaction system from the catalyst pot under reduced pressure, and polymerized at 240°C and 1 torr for 4.5 hours to make it transparent. A polyamide elastomer was obtained.

This polyamide elastomer contains 65.5% by weight of polyoxyethylene glycol segments, has a Heiss number of 7%, a tensile strength of 270 hg/cm2, a relative viscosity of 2.2,
It had a shore hardness of 84A.

Production Example 7 Polyamide elastomer A-7 was produced in the same manner as in Production Example 1. Polyoxine ethylene glycol 66.h having a number average molecular weight of 1490, sebacic acid 9.09, hexamethylene diamine adipate 1.2 g, caprolactam 79. 89, containing 51.5% by weight of polyoxyethylene glycol segments, and having a relative viscosity of 189.
3. A polyamide elastomer with a haze number of 18% was obtained.

Production Example 8 Production of polyamideimide elastomer A-8 Trimellitic anhydride 7 was used instead of terephthalic acid in Production Example 5.
．． A pale yellow polyamideimide elastomer was obtained in the same manner as in Production Example 5 except that 09 was used.

This one is polyoxyethylene glycol segment 7
Contains 1% by weight, haze number 20%, tensile strength 270k
g/cm2, and the relative viscosity was 2.3.

Production Example 9 Production of polyamide elastomer A-9 A polyoxytetramethylene glycol segment was produced in the same manner as Production Example 5, except that polyoxytetramethylene glycol having a number average molecular weight of 1980 was used instead of polyoxyethylene glycol in Production Example 5. Contains 70% by weight, haze number 23%, tensile strength 290kg/cm2, relative viscosity 1
．． A polyamide elastomer of No. 95 was obtained.

Examples 1-11 Comparative Examples 1-4 Each component having the composition shown in Table 1 was kneaded at 240°C using a single screw extruder, and the strands were cooled with water and pelletized. Next, after drying the obtained pellet, /linder temperature 2
Injection molding at 40℃ 1 mold temperature 50℃ t2.

The molded samples were conditioned for 2 days at 23° C. and 55% RH, and then their physical properties were measured. The results are shown in Table 1.

Note that the symbols for the acrylic resin and additives used in Examples and Comparative Examples have the following meanings.

Acrylic Resin B-1 Acrylic Resin Delpetsu) 6ON [Asahi Kasei Kogyo (
Co., Ltd.] B-2, copolymer resin consisting of 85% by weight of methyl methacrylate units and 15% by weight of ethyl acrylate units B-3 Niacrylic resin Delpet 8ON [manufactured by Asahi Kasei Corporation (
Co., Ltd.] Additive C-1 = Sodium dodenlebenzene sulfonate C-2: Sodium dode/rudiphenyl ether disulfonate 3 Sodium diphenyl phosphite Example 1 2, Comparative Example 5 The composition shown in Table 2 The yellowness of the resin composition was measured.

The results are shown in Table 2.

No. table teenager Reason Man Ah shape Akira (1 other person)

Claims (1)

[Claims] 1 (A) 70 to 97% by weight of acrylic resin, (B) (
b) A condensation product of a polyamide-forming monomer containing at least 50% by weight of caprolactam, (b) a dicarboxylic acid having 6 to 20 carbon atoms, and (c) polyoxyethylene glycol having a number average molecular weight of 800 to 3,000, and Oxyethylene glycol segment content 55-8
0% by weight, and 30 to 3% by weight of a transparent polyamide elastomer having a relative viscosity of 1.5 or more at a temperature of 30° C. and a haze number of 50% or less at a thickness of 1 mm. 2 (A) 70 to 97% by weight of acrylic resin and (B) (
b) A condensation product of a polyamide-forming monomer containing at least 50% by weight of caprolactam, (b) a dicarboxylic acid having 6 to 20 carbon atoms, and (c) polyoxyethylene glycol having a number average molecular weight of 800 to 3,000, and Oxyethylene glycol segment content 55-8
0% by weight, a transparent polyamide elastomer with a relative viscosity of 1.5 or more at a temperature of 30°C and a haze number of 50% or less with a thickness of 1mm and 30 to 3% by weight. A transparent acrylic resin composition having antistatic properties and containing at least one antistatic agent selected from sulfonates and organic phosphates.