KR20030064950A - Mixed fog resistant composition for wrap employed in the packaging of food products - Google Patents

Abstract

PURPOSE: Provided is a composite antifogging agent composition for food wrap, which shows the compatibility with a resin, an initial antifogging property, a unwinding property of wrap, and an adhesion. CONSTITUTION: The composition is produced by mixing a reaction product(A) obtained by esterifying polyol and a high fatty acid of C10-C20 in a molecular weight ratio of 1.0:1.0-1.0:2.0; a reaction product(B) obtained by esterifying a glycerin and an oleic acid in a molecular weight ratio of 1.0:1.0-1.0:2.0; and an addition product obtained by addition reacting a high alcohol and an ethylene oxide in a molecular weight ratio of 1:1-1:7, in a weight ratio of 70:20:10-30:20:50.

Description

MIXED FOG RESISTANT COMPOSITION FOR WRAP EMPLOYED IN THE PACKAGING OF FOOD PRODUCTS}

The present invention relates to a composite unfilled composition for food packaging wrap.

Films used for food packaging are usually soft vinyl chloride, low density polyethylene and the like. As the surface of these films is hydrophobic, when packaging frozen foods, vegetables, fruits, and the like, water droplets form on the surface of the film and become cloudy due to the moisture contained therein. Due to this phenomenon, the appearance of the product is deteriorated or the storage quality is poor, thereby degrading the quality of the product.

In order to solve this problem, by adding or applying a surfactant to the film to form a layer of the surfactant on the surface of the film to increase the critical surface tension to increase the hydrophilicity, the water droplets are broken and the whole is uniformly wet to improve the light transmission. The surfactants used in this way are called invincibles, and the formulation of the invincible is essential in food packaging wraps.

When the formulation is added to the synthetic resin, the processing temperature is high, so if the thermal stability is not good, the film transparency will be degraded or discolored. In addition, due to the adhesiveness due to excessive bleeding of the unfilled agent, the unwinding property of the film is not good, there is also a inconvenience in use, there is a problem such as poor efficiency as a packaging material because there is no adhesive force during food packaging.

Thus, the present inventors have completed the present invention by improving the non-additives to maximize the effect of the additives in the film for food packaging in order to solve such problems.

The present inventors found that higher fatty acid-polyhydric alcohol esters had a great effect during the study to make an invincible agent having excellent invincibility and thermal stability of food packaging wraps, and thus led to the present invention.

The present invention is to provide a composite invincible composition for food packaging wraps that provides an excellent invincible effect on food packaging wraps, that is, a composite invincible effect such as compatibility with the resin, initial invincibility, unwinding and adhesion of the wrap .

The present invention provides a reaction product (A) obtained by esterifying a polyhydric alcohol: a higher fatty acid having 10 to 20 carbon atoms in a molar weight ratio of 1.0: 1.0 to 1.0: 2.0, and a glycerin: oleic acid in a molar weight ratio of 1.0: 1.0 to 1.0: 2.0. The reaction product (B) obtained by esterification and the addition reaction product (C) obtained by addition-reacting the higher alcohol: ethylene oxide in the molar weight ratio of 1: 1-1: 7 are 70: 20: 10-30: 20: 50 It provides a composite unpacking composition for food packaging wraps prepared by mixing in a weight ratio.

In food packaging wraps, the film surface is never washed with condensed water like agricultural greenhouses, so long-term persistence of invincibility is not a problem and requires good initial invincibility.

The higher fatty acids used in the present invention are fatty acids having 10 to 20 carbon atoms, for example, lauric acid, myristic acid, palmitic acid, stearic acid, linolenic acid, linoleic acid, arachidonic acid and the like. In particular, lauric acid and myristic acid, which are fatty acids in the range of 12-14 carbon atoms, are more effective. Polyhydric alcohols include, for example, sorbitol, glycerin, diglycerine, polyglycerine and the like. The molar ratio of polyhydric alcohol / high fatty acid in the synthesis of ester is suitably in the range of 1.0 / 1.0 to 1.0 / 2.0, but the range of 1.0 / 1.3 to 1.0 / 1.5 was excellent.

Glycerin-oleic acid ester was used to improve the unwindability of food packaging wraps. The molar ratio of glycerin / oleic acid was in the range of 1.0 / 1.0 to 1.0 / 2.0, but the range of 1.0 / 1.3 to 1.0 / 1.5 was effective. .

Higher alcohol-ethylene oxide adducts were used to improve the adhesion of the wraps. The higher alcohol used herein is preferably in the range of 12 to 18 carbon atoms, but the range of 12 to 16 carbon atoms is excellent. The molar ratio of the higher alcohol-ethylene oxide is suitably in the range of 1.0 / 1.0 to 1.0 / 10.0, but the range of 1.0 / 3.0 to 1.0 / 7.0 was excellent.

Therefore, in order to simultaneously provide the initial unsatisfaction, slackness and adhesiveness of the food packaging wrap, the result of using the polyhydric alcohol-high fatty acid ester, glycerin / oleic acid ester, higher alcohol-ethylene oxide adduct as a result of all the above performance By showing an excellent effect it was possible to solve the problems of the prior art. At this time, the mixing ratio was suitably in the range of 70:20:10 to 30:20:50, and particularly, the ratio of 30:20:50 was effective.

The ester reaction of polyhydric alcohols with higher fatty acids can be carried out under conditions well known in the art. Specifically, 0.3% to 0.5% of caustic soda can be added as a catalyst under nitrogen, and reacted at a temperature of 170 to 250 ° C. for 5 to 7 hours to obtain an ester reaction product.

Esters of glycerin and oleic acid can also be obtained by introducing a molar weight ratio of 1: 1.5 under the above-described ester reaction conditions.

The addition reaction of the higher alcohol-ethylene oxide may be carried out by placing each reactant in an autoclave for 3 to 5 hours at a temperature of 3 to 5 kg / cm 2 at 150 to 180 ° C. to obtain the addition product of the present invention.

The composite unpacking agent of the present invention can be used to produce a food packaging wrap film that exhibits the desired composite unloading effect. Such a wrap film can be produced, for example, by melt-blending a soft vinyl chloride, the invincible agent of the present invention, and other epoxidized soybean oils, plasticizers, and stabilizers in a half-barrier mixer, and then passing them through an impression processing apparatus. The resulting wrap film can be verified by a test for observing and evaluating the invincible effects shown in the Examples below.

When explaining the effects of the present invention in detail according to the following examples, the present invention is not limited to the examples.

Example 1

Preparation Example 1 of higher fatty acid-polyhydric alcohol ester

In a four-necked flask, sorbitol and lauric acid were added in a molar weight ratio of 1: 1.3, and caustic soda 0.4% was added as a catalyst.The reaction was carried out under 240-250 ° C. for 5 hours while attaching cooling condensate and nitrogen. The reaction was obtained.

Example 2

Preparation Example 2 of higher fatty acid-polyhydric alcohol ester

In Example 1, instead of sorbitol and lauric acid, glycerin and palmitic acid were added at a molar weight ratio of 1: 1.5, and the reaction was carried out in the same manner as in Example 1 except that the reaction was carried out under the conditions of a reaction temperature of 170-180 ° C to obtain an ester reaction product.

Example 3

Preparation Example 3 of higher fatty acid-polyhydric alcohol ester

Diglycerin and lauric acid were added in a molar weight ratio of 1: 1.5 instead of glycerin and palmitic acid in Example 2, and the reaction was carried out as in Example 2 to obtain an ester reaction product.

Example 4

Preparation of Glycerine-Oleic Acid Ester

In Example 2, except that glycerin and oleic acid were added at a molar weight ratio of 1: 1.3 instead of glycerin and palmitic acid, it was carried out as in Example 2 to obtain an ester reaction product.

Example 5

Preparation of Higher Alcohol-Ethylene Oxide Additives

Lauryl alcohol and ethylene oxide were added to the autoclave at a molar weight ratio of 1: 3, and addition reaction was carried out at 150 ° C and 4 kg / cm 2 for 5 hours to obtain an addition reaction product.

Example 6

Example 1 Example 4 The reaction product of Example 5 was mixed at a weight ratio of 70:20:10 to obtain a mixture.

Example 7

Example 2 Example 4 The reaction product of Example 5 was mixed in a weight ratio of 40:20:40 to obtain a mixture.

Example 8

Example 3 Example 4 The reactants of Example 5 were mixed in a weight ratio of 30:20:50 to obtain a mixture.

Example 9

Test ?? was prepared using a soft vinyl chloride resin and the invincible agent of Examples 1-8, and the blending amount and processing conditions are as follows.

1) Compounding amount

Resin Soft Vinyl Chloride 100

Additive Epoxylated Soybean Oil 10PHR

Plasticizer (DOP) 40 PHR

Stabilizer 0.5PHR

Invincible 2.5PHR

2) processing conditions

1. Melt blending by mixing bandi mixer

2. Induction Processing Equipment

Extruder Screw D = 40mm L / D = 24 C.R = 4.2

40 rpm Split 8 m / min. B.U.R = 1.5

Die spiral type D = 75mm split = 0.5mm

Cooling

Thickness of film 0.06mm

Example 10

A test lab was used to compare invincibility effects as follows, and the results are shown in Table 1.

<Invincibility test method>

400 ml of hot water at 90 ° C. was placed in a 500 ml beaker, sealed with a sample film, and left to stand to observe and evaluate the invincible effect inside the film.

Comparative Example 1

Glycerin-monostearate was prepared by the method of Example 9 to the film and the results of the test of the method of Example 10 are shown in Table 1.

Comparative Example 2

The use of sorbitan-monostearate in place of the glycerin-monostearate of Comparative Example 1 was the same as in Comparative Example 1.

Comparative Example 3

The use of sorbitan monooleate in place of the glycerin monostearate of Comparative Example 1 was the same as in Comparative Example 1.

Comparison of invincible effects of invincible Invincible Invincibility Loosening Adhesive Example 1 B △ × 2 C ○ × 3 A △ △ 4 C ○ × 5 C × ○ 6 B △ △ 7 B △ △ 8 A ○ ○ Comparative Example 1 D × × 2 C × × 3 C △ △

Evaluation standard

1) Invincible A: No water droplets

B: Some water droplets are attached (almost transparent)

C: adhesion of water droplets is about 30% to 50%

D: Water droplets attached to the front

2) Unwinding ○: Unwinding

△: loosening property is medium

×: loosening property is poor

3) Adhesive ○: Good adhesive

△: adhesive intermediate

×: poor adhesion

As can be seen from the above Table 1, as in Examples 6 to 8 as compared to the case of using the invincible agents of Examples 1 to 5 alone, a mixture of three kinds of invincible agents disclosed in the present invention at a constant ratio was used separately. At the time of the invincibility, unwinding and adhesiveness it was confirmed that the excellent invincible effect appears.

As described above, the composite unseparable agent is a undivided composition obtained by mixing three kinds of unsecured agents in a certain ratio, and provides excellent performance in terms of performance by simultaneously providing unsatisfactory, unsealable, and adhesive properties required for food packaging. It is considered to be of great economic value as a material.

Claims (7)

Reaction product (A) obtained by ester-reacting polyhydric alcohol: C10-C20 higher fatty acid in the molar weight ratio of 1.0: 1.0-1.0: 2.0, Reaction product (B) obtained by esterifying glycerin: oleic acid in the molar weight ratio of 1.0: 1.0 to 1.0: 2.0, and Compound invincible for food packaging wrap prepared by mixing the addition reaction product (C) obtained by addition reaction of a higher alcohol: ethylene oxide in a molar weight ratio of 1: 1 to 1: 7 in a weight ratio of 70:20:10 to 30:20:50 Composition. The composite unpacking composition for food packaging wrap according to claim 1, wherein the molar weight ratio of polyhydric alcohol: high fatty acid is in the range of 1.0: 1.3 to 1.0: 1.5. The composite unpacking composition for food packaging wrap according to claim 1, wherein the molar weight ratio of glycerin: oleic acid is in the range of 1.0: 1.3 to 1.0: 1.5. The composite unpacking composition for food packaging wrap according to claim 1, wherein the molar weight ratio of the higher alcohol: ethylene oxide is in the range of 1.0: 3.0 to 1.0: 7.0. The reaction product (A) according to claim 1, wherein the reaction product (A) is an ester reaction product of sorbitol and lauric acid, and the addition reaction product (C) is a product obtained by addition reaction of lauryl alcohol and ethylene oxide. The composite unpacking composition for food packaging wraps characterized by the mixing ratio of (B) :( C) is 70:20:10. The reaction product (A) according to claim 1, wherein the reaction product (A) is an ester reaction product of glycerin and palmitic acid, the addition reaction product (C) is a product obtained by addition reaction of lauryl alcohol and ethylene oxide, and the reaction product (A): (B ): (C) The composite unfilled composition for food packaging wraps, characterized in that the mixing ratio of 40:20:40. The reaction product (A) according to claim 1, wherein the reaction product (A) is an ester reaction product of diglycerin and lauric acid, the addition reaction product (C) is a product obtained by addition reaction of lauryl alcohol and ethylene oxide, and the reaction product (A). The composite unpacking composition for food packaging wraps characterized by the mixing ratio of: (B) :( C) is 30:20:50.