JPS59161447A - Antifogging synthetic resin film - Google Patents

Abstract

PURPOSE:To provide the titled film having excellent antifogging property at low temperature and durability of the antifogging property at high temperature, and capable of removing the moisture in a space rapidly, by compounding a mixture of specific higher fatty acid polyhydric alcohol partial esters and a specific compound containing polyfluoroalkyl group. CONSTITUTION:(A) 100pts.wt. of a synthetic resin (preferably polyvinyl chloride) is compounded with (B) 1-5pts.wt. of a mixture of partial esters of higher fatty acid and polyhydric alcohol, containing 20-80wt% of diesters and 80-20wt% of the monoesters and triesters, and obtained by esterifying (i) a hexahydric alcohol (hexitol) obtained by the reduction of a sugar (hexose) and/or a polyhydric alcohol obtained by removing 1-2 moles of water from the above hexahydric alcohol with (ii) a higher fatty acid, and (C) 0.01-2pts.wt. of a compound having 3-20C polyfluoroalkyl group. The component (B) is preferably an ester of sorbit (sorbitol-type polyhydric alcohol, etc.) and palmitic acid, etc.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an antifogging synthetic resin film. More specifically, it has excellent antifogging properties at low temperatures, long lasting antifogging properties at high temperatures, and excellent water condensation ability.
This invention relates to an anti-fog synthetic resin film.

Conventionally, since thermoplastic synthetic resins do not allow water vapor to pass through and have hydrophobic surfaces, water droplets adhere to the surface of synthetic resin films, causing various problems. In particular, when a synthetic resin film is used as an agricultural covering material, the antifogging property of the film is an important performance. That is, when a synthetic resin film is used as a covering material.

Moisture evaporating from the soil or cultivated plants causes water droplets to adhere to the inner surface of the film, making it opaque, which not only reflects or blocks sunlight and impairs the growth of cultivated plants, but also causes condensed water droplets to impair the growth of cultivated plants. Falling onto plants, causing disease,
It causes quality deterioration.

In order to improve the above-mentioned drawbacks, it is widely practiced to add a so-called antifogging agent to the base resin in order to impart hydrophilicity to the surface of the synthetic resin film (for example,
-3'372 publication, Tokko Shoda g-3/7 daza publication,
Special public Akira! f/-396 Otsuwa Publication, Special Publication Sho Sλ-263
Publication No. 32, Tokko Akira! r! -Refer to Publication No. 9'13/ etc.)
.

Synthetic resin films for food packaging must exhibit antifogging properties even when food is packaged and stored in a cold place for a long period of time. On the other hand, synthetic resin films used for agricultural purposes exhibit antifogging properties even in the low temperatures of winter, and decompose by ultraviolet rays without being extracted and washed away even during the high temperatures of summer. It must also have long-lasting anti-fog properties.

However, with the technology described in the above publication, +11
It has good anti-fog properties at low temperatures (low-temperature properties), (2) its anti-fog properties last for a long time even when exposed to high temperatures (excellent sustainability), and (3) it has a synthetic resin film. There is nothing that actively removes or reduces the moisture present in the space formed by the coating by promoting moisture condensation on the inner surface of the film.

Under such circumstances, the present inventors have completed the present invention as a result of intensive studies aimed at providing an antifogging synthetic resin film that has all of the above three properties.

However, the gist of the present invention is that the synthetic resin 10O
Based on the weight part, raw materials are hexahydric alcohol (hexitol) obtained by reduction of sugars (hexose) and/or polyhydric alcohols obtained by separating 7 to 2 molecules of water from these alcohols, and higher fatty acids. year,
It is a higher fatty acid polyhydric alcohol partial ester mixture obtained by esterification, and the content ratio of diesters is 20-g0% by weight, and the content ratio of the sum of monoesters and triesters is 870-20% by weight. A low-temperature product characterized by blending Narumoa, /, ~S parts by weight, and 0907 to 2 parts by weight of a compound having a polyfluoroalkyl group having 3 to 20 carbon atoms, and forming it into a film. Excellent anti-fog properties at high temperatures and long-lasting anti-fog properties at high temperatures.
The present invention also provides an antifogging synthetic resin film that also has excellent moisture condensation performance (first invention). Furthermore, the substances blended into the base synthetic resin are the above-mentioned (Al higher fatty acid polyhydric alcohol partial ester mixture) and (Bl) the alkylene oxide-added type higher fatty acid polyester having a chemical structure in which alkylene oxide is added to the above component (A). a mixture consisting of a hydrogenated alcohol partial ester mixture, and (0) the above carbon number 3 to 20;
The present invention relates to an antifogging synthetic resin film which essentially contains three components of a compound having a polyfluoroalkyl group (No. 2, 2009).

The present invention will be explained in detail below.

In the present invention, the synthetic resin generally includes film-forming thermoplastic synthetic resins.

Specifically, polyvinyl chloride, vinyl chloride-vinyl acetate copolymer, vinyl chloride-acrylic acid ester copolymer,
Vinyl chloride resins such as vinyl chloride-methacrylic acid ester copolymer; polyethylene, polypropylene, ethylene-vinyl acetate copolymer, ethylene-acrylic acid copolymer, ethylene-acrylic acid ester copolymer, ethylene-
Olefin resins such as methacrylic acid ester copolymers and ethylene-butylene copolymers; polyethylene terephthalate, polyamides, polymethyl methacrylate, polyacrylates, polycarbonates, polyvinyl acetate, fluorine-containing resins, etc., or blends of these polymers, etc. means. For agricultural cover applications, vinyl chloride resins and olefin resins are suitable from the viewpoints of weather resistance, light transmittance, economy, strength, workability, etc., and polyvinyl chloride is most advantageous. .

These synthetic resin base materials include hexavalent alcohol (hexitol) obtained by reducing sugars (hexose),
and/or a higher fatty acid polyhydric alcohol partial ester mixture obtained by esterifying a polyhydric alcohol obtained by separating 7 to 2 molecules of water from these alcohols and a higher fatty acid as raw materials, Monoesters, diesters, and triesters with specific content ratios, and those with 3 to 3 carbon atoms. A specific amount of a compound containing 20 polyfluoroalkyl groups is blended (first invention).

Furthermore, the above (A) higher fatty acid polyhydric alcohol partial ester mixture; (B) the above (alkylene oxide-added higher fatty acid polyhydric alcohol partial ester mixture having a chemical structure in which alkylene oxide is added to component A3);
A mixture consisting of component (A) and component (B),
and a specific amount of a compound containing a polyfluoroalkyl group having 3 to 20 carbon atoms (second invention).

In the present invention, polyhydric alcohols include hexahydric alcohol (hexitol) obtained by reduction of sugars (hexoses), polyhydric alcohol (hexitane) obtained by the separation of one molecule of water from hexitol, and seven molecules of water from hexitane. Polyhydric alcohol (hexite) obtained by the withdrawal of These polyhydric alcohols may be a single type, a mixture of multiple alcohols in the same range, or a mixture of alcohols in different ranges.

Among the polyhydric alcohols mentioned above, specific examples of hexitol include sorbitol, mannitol, iditol, and talitol.
(talitol), dulcit (dulcitol), allodulcit (allosulcitol), and the like. Specific examples of hexitane include sorbitan, mannitan, iditutan, talittan, dulcitol, allodulcitone, and the like. Specific examples of hexite include sorbite, mannitol, idisito, talid, dulcit, allodulcit, etc. Of the above polyhydric alcohols, sorbitol-based polyhydric alcohols (sorbitol, sorbitan, sorbite) and/or mannitol A polyhydric alcohol (mannitol, mannitan, mannitol) obtained by esterifying it with a higher fatty acid and a compound containing a polyfluoroalkyl group having 3 to 20 carbon atoms are blended into a synthetic resin film. When this is done, the antifogging effect, antifogging durability, and moisture condensation performance become particularly excellent, which is particularly preferable.

As the higher fatty acid to be subjected to the esterification reaction with the above-mentioned back side alcohol, a fatty acid having carbon number/2 to u and 2 is suitable. Specifically, fatty acids such as lauric acid, myristic acid, palmitic acid, stearic acid, beheranic acid, and oleic acid, as well as beef tallow, rapeseed oil, corn oil, soybean oil, cottonseed oil, palm oil, sesame oil, linseed oil, or Mention may be made of mixed fatty acids obtained from hydrogenated oils. Among them,
Fatty acids include palmitic acid and/or stearic acid.
If it is a mixed fatty acid containing % by weight or more, a synthetic resin film containing a fatty acid polyhydric alcohol ester obtained by esterification with the polyhydric alcohol and a compound containing a polyfluoroalkyl group having 3 to 2 carbon atoms. Particularly preferred is one with excellent antifogging effect, antifogging durability, and moisture condensation performance.

When the polyhydric alcohol and the higher fatty acid are reacted to form an ester, (a) an ester in which all of the hydroxyl groups of the polyhydric alcohol undergo an esterification reaction with a fatty acid;
A partial ester in which a portion of the hydroxyl group of a polyhydric alcohol undergoes an esterification reaction with a fatty acid, and an unreacted product of E-1.
Obtained as a mixture.

According to experiments conducted by the present inventors, the higher fatty acid polyhydric alcohol esters, the esters (a) and the partial esters (b), each contain a polyfluoroalkyl group having 3 to 20 carbon atoms. The effect of the synthetic resin film obtained by blending with the compound is different in terms of antifogging properties, antifogging persistence, moisture condensation performance, etc., that is, the synthetic resin film obtained by blending with the above-mentioned (a) esters is different. The above (b)
It was found that the film containing partial esters was superior in antifogging properties at low temperatures, antifogging durability at high temperatures, and moisture condensation performance.

Furthermore, (b) higher fatty acid polyhydric alcohol partial esters, monoesters, diesters, and triesters are separately extracted, and each ester and a carbon number of 3 to 20 are extracted.
The effectiveness of the antifogging property, antifogging durability, and water condensation performance of a synthetic resin film blended with a compound containing a polyfluoroalkyl group was investigated. As a result, the effect of imparting hydrophilicity to the surface of a synthetic resin film is in the order of monoesters>diesters>triesters, and diesters and triesters have the effect of improving antifogging durability and water condensation performance. I found each to be excellent.

Based on the above experimental results, (1) anti-fogging properties at low temperatures (
(2) the antifogging property should last for a long time (excellent durability) even when exposed to high temperatures;
(3) Remove moisture existing in the space covered with the film,
In order to actively reduce removal by promoting condensation on the inner surface of the film, the higher fatty acid polyhydric alcohol partial ester mixture should be mixed with a diester content of 20-10% by weight and a monoester content of 20-10% by weight. It has been found that it is preferable that the total content of the triesters is in the range of 0 to 20% by weight. Within the above range, a proportion in which the diester content exceeds the sum of the monoester and triester content is particularly preferred.

The antifogging synthetic resin film according to the present invention contains a part of the above (A) higher fatty acid polyhydric alcohol partial ester mixture,
(B) Substituting the above (A
Component I and component (B) can be blended together (second invention).

Examples of alkylene oxides that can be added to higher fatty acid polyhydric alcohol partial esters include ethylene oxide, propylene oxide, butylene oxide,
Examples include phenylene oxide, polyethylene oxide, polypropylene oxide, polybutylene oxide, and the like.

The total amount of component (A) or components (A) and (B) in the base synthetic resin is in the range of /-j- parts by weight based on ioo parts by weight of the synthetic resin. When the value is less than the above range, the antifogging properties of the synthetic resin film are unfavorable.
On the other hand, if the amount exceeds the above range, it may bleed out onto the film surface, which is undesirable.

For example, in the technique described in JP-A-56-3-S33, surfactants with different HLBs are used in combination to satisfy the requirements for early development of antifogging properties, workability, and prevention of fog generation. An example is shown. However, the use of a mixture of two or more surfactants not only complicates the film manufacturing process, but also improves the durability of coating materials, which have been in strong demand in recent years, and in particular, improves anti-fog durability. response will be inadequate.

The antifogging synthetic resin film according to the present invention includes the above (A)
In addition to blending the components or the components (A) and (B), a compound containing a polyfluoroalkyl group having 3 to 20 carbon atoms is blended. Such fluorine-containing compounds include:
Examples include compounds represented by the following general formula.

(11RfBF In this formula, Rf represents a polyfluoroalkyl group having 3 to 20 carbon atoms, and B represents -Co-, -8O2-. These Rf and B have the same meaning in the following general formula. .

(2) RfOH bar In this formula, R1 is -C! ,H,−,−0. R2 represents a hydrogen atom or a lower alkyl group, and n represents an integer of / to 30. These R1 and R'll have the same meaning in the following general formula.

In this formula, a represents an integer from / to lθO.

It has the same meaning in the general formula.

+1 (8) Rf OOOM In this formula, M represents a hydrogen atom, an alkali metal, an alkaline earth metal, or -NH. M has the same meaning also in the following general formula.

(91RfBNRI C!OOM 2 Male!!! R1803M 1 @@ Rf OH200mHt m S 03 M In this formula, m represents an integer from / to 20.

m has the same meaning in the following general formula.

2'■ M03B-OHOOOOOH2RfCH,0OOC
H, Rf 1 Z In this formula, HX represents a halogen acid.

Z In this formula, X represents a) rogenic acid group. The following general formulas also have the same meaning.

The above-mentioned fluorine-containing compounds can be used alone or in combination of two or more types. The amount of the fluorine-containing compound added to the synthetic resin film can be varied depending on the type of fluorine-containing compound to be added and the type of synthetic resin. Generally, at least 0.0 parts per 100 parts by weight of the base synthetic resin (however, plasticizers are not included in the calculation. The same applies hereinafter)
/part by weight, and the upper limit of the blending amount is set at 2.0 parts by weight, since blending in too large a quantity may cause bleed-out or clouding. The preferred range of blending amount is
Synthetic resin ioo parts by weight! 11 o, o-~/, θ parts by weight.

The synthetic resin base material constituting the synthetic resin film according to the present invention may also contain various usual resin additives 5 such as plasticizers, lubricants, heat stabilizers, antistatic agents, ultraviolet absorbers,
Pigments, dyes, etc. may be included in conventional amounts.

For example, the soft vinyl chloride resin suitable for the present invention has a degree of polymerization of about 1000 to . Approximately 3θ plasticizer is added to 10.0 parts by weight of 2000% polyvinyl chloride.
It can be blended in a proportion of 70 parts by weight. Suitable plasticizers that can be used include, for example, heptalic acid derivatives such as di-n-octyl phthalate, dicoethylhexyl phthalate, dipendyl phthalate, diisodecyl phthalate, didodecyl phthalate, and diisodecyl phthalate;
Isophthalic acid derivatives such as diisooctyl phthalate; adipic acid derivatives such as di-n-butyl maleate and dioctyl adipate; maleic acid derivatives such as di-n-butyl maleate; citric acid derivatives such as tri-n-butyl citrate; Examples include itaconic acid derivatives such as butyl itaconate; oleic/acid derivatives such as butyl oleate; ricinoleic acid derivatives such as glycerin monocitrate; and others such as tricresyl phosphate, epoxidized soybean oil, and epoxy resin plasticizers.

In addition, examples of lubricants or heat stabilizers that can be included in the synthetic resin base material include polyethylene wax, bisamide,
Stearic acid, zinc stearate, barium stearate, calcium stearate, barium ricinoleate, etc. are used. Examples of ultraviolet absorbers include benzotriazole-based, benzoate-based, benzophenone-based,
Examples include ultraviolet absorbers such as cyanoacrylate and phenyl salicylate. Also.

Examples of pigments and dyes include titanium oxide, silica, ultramarine blue, and phthalocyanine blue.

These resin additives may be contained in a small amount of 5 parts by weight or less per 100 parts by weight of the synthetic resin base material.

In order to further blend component (C) into the base synthetic resin, component (A) or a mixture of components (A) and (B), and further include various resin additives if necessary, it is usually done by: This is possible by using compounding techniques and mixing techniques such as pump blenders, Banbury mixers, super mixers, and other blenders and mixers.

To form a synthetic resin into a film, methods known per se,
For example, a melt extrusion method, a solution casting method, a calender method, etc. may be employed.

If the antifogging synthetic resin film according to the present invention is too thin, it will not have sufficient strength, and on the other hand, if it is too thick, it will be used for packaging, agriculture, etc. (when it is useful, it will be used for cutting, gluing, etc. Since it causes inconvenience, 0.0 / ~ 0.! r w
It is preferable to set it within the range of x.

As explained above, the anti-fog film according to the present invention is
Like the various antifogging films conventionally used, it can be used for packaging various foods and for covering greenhouses or tunnels for cultivating useful plants.

The anti-fogging synthetic resin film according to the present invention, which further contains component (C) in the mixture of component (A) or (A + acid component (B) component), can be used as a cover for cultivation of useful plants. When used for commercial purposes, it exhibits anti-fog properties even in the low-temperature period of winter, and the anti-fog agent does not extract and flow out even during the high-temperature period of summer, and is not decomposed by ultraviolet rays, making it an excellent anti-fog agent. The anti-fog synthetic resin film according to the present invention has extremely high utility value in the use of agricultural cover. .

Hereinafter, the present invention will be explained in detail based on examples.
The present invention is not limited to the following examples unless it exceeds the gist thereof.

Examples 1 to 6, Comparative Examples/~Tap Polyvinyl chloride<p=t3oo) to o
Parts by weight Dioctyl phthalate 5θ Barium-zinc liquid stabilizer 2 parts by weight Barium-zinc powder stabilizer / The basic composition is the antifogging agent shown in Table 1, and carbon atoms of 3 to 3. 2
A compound containing 0 polyfluoroalkyl groups was blended with polyvinyl chloride (however, it was not blended in Comparative Example q).

The mixture was fed into a calender heated to /gOC and formed into a film by a conventional method.
0 types were created.

The above 10 types of films and a commercially available agricultural vinyl chloride film (thickness o, /m+=) (Comparative Example S) were evaluated for anti-fogging properties according to the following method.

Evaluation of anti-fogging property> A field in Nagoya City, Aichi Prefecture with a width of 2m, a height of 2m, and a depth of 2m.
(December 70, 1981), the anti-fog d of each film was applied to a single-roof type house with a height of
was visually observed and evaluated. The results are shown in Table 1.

The numerical values of "antifogging performance evaluation" have the following meanings.

"L"... Water adheres in a thin film and no water droplets are observed.

"2J...Water is attached in a thin film, but slightly large water droplets are observed.

"3"... Water is attached in a thin film, but large water droplets are observed to be attached in some areas.

“4”・・・・・・A state in which small water droplets are observed to be attached partially.

“°5”・・・・・・A condition in which fine water droplets are observed to adhere to the entire inner surface of the film.

Kuichibi cultivation test> 30 days before ridge making, 3.0 kg of compost and 1 sot of limestone were applied per square meter of the field (location: Mie prefecture - Shigun), and 1S days before ridge making, fishmeal/S1, Urea S1
, dissolved phosphorus fertilizer el? and potassium chloride SR were applied.

A pipe house with a width of f, J' m, and a depth of som was constructed in the field, and on October 2, 1920, half of the pipe house (area A) was coated with the film of Example/, and the other half was coated with the film of Example/. (Area B) was coated with the film of Comparative Example 3,
At the border between the two wards, each film was hung from the ceiling to create a partition.

Nine ridges with a height of '30 Crn and a width of 6 occm were provided in the pipe house, and 6 ridges were covered with a black mulching film. On October 30, 1981, 30 Cr was placed on each of the six ridges.
Ichibi (spring incense) seedlings were planted at n intervals. As top dressing, on the 70th day after planting and on the 70th day, /m2 /㎡, fishmeal /&f, urea q, s t, chloride power IJ / Of
were fertilized respectively.

For both categories, 1966/month io day to 1966 sg year/
Moon J? During the day, we investigated the following items. The results,
Shown in Table 2.

<Amount of condensed water on the inside of the film> - A rain gutter was installed on the shoulder of the pipe, extending in the direction of the depth of the pipe, to collect water flowing down the inside surface of the film, and measure the amount of water. The measurement was carried out for 20 days and calculated as the average amount of water flowing down per hour per square meter of the inner surface of the film.

The unit is f/@'·hr.

<Situation of water droplets adhering to plant surfaces> Water droplets adhering to leaves, stems, and fruits of plants under cultivation were observed and evaluated with the naked eye. The numerical values in the column "Plant surface water droplet adhesion status" in Table 2 have the following meanings.

"L"...No water droplets were observed at all.

"2"... Slight adhesion of water droplets is observed.

"3" ..... There are scratches and water droplets on the leaf tips.

"4"... Water droplets are also observed on the fruit.

<Incidence of powdery mildew> Plants under cultivation are visually observed and evaluated. The evaluation criteria were as follows. In addition, before the above evaluation period,
If any disease outbreak was observed, Topjin irrigation agent/θ00x liquid was sprayed in both plots.

"1"...No outbreak of disease is observed.

"2"... Slight occurrence of disease is observed.

<Amount of moisture absorbed by a filter paper placed on an above-ground IOCM> A ring made of wire is installed at a position of 10 cm above the ground, and a filter paper (tA, //Cmφ) made by Toyo P Paper ■ is placed on top of it.The amount of moisture absorbed by this filter paper is was measured. The measurement was carried out by placing the filter paper on a ring at 3:00 pm, collecting it at 3:00 am the next day, and measuring the increase in weight of the filter paper, which was taken as the average value for 20 days.

Cultivation test of cucumber> A pipe house with width T, lIm, and depth ROM was constructed in the field (located in Shigun, Mie Prefecture). I set up the Tori Ni curtain device. In this set, the film of Example J was installed in half of the pipe length direction (section 0), and the film of Comparative Example 3 was installed in the remaining half (section D), so that they could be rolled up with a curtain device. At the border between the two wards, a film of the same type was hung from the ceiling to create a partition.

The outside of the pipe house was covered with an agricultural film ("Noviace" manufactured by Mitsubishi Monsanto Chemicals) with a thickness of 0.7 KM.

Fertilize the ground inside the pipe house.

Three ridges with a width of germ were provided. On February 30, 1962, cucumber seedlings (Shokin promoted) were planted in each ridge at a rate of 6 plants per 1 tsubo. The internal temperature of the house is below 30C during the day, usually in the range of 23 to 2gC, and 13 to 2gC at night.
The curtains were managed and adjusted by spreading and rolling them up so that

For both categories, Showa S7 year Ko month/B, ~ Showa 57 year a
The following items were investigated during the 20th day of the month. The results,
Shown in Table 2.

<Amount of condensed water on the inner surface of the film> Same as in the locust cultivation test.

Condition of water droplet adhesion on plant surface The same procedure was used as in the locust cultivation test.

<Downy mildew outbreak status> The same procedure was used as in the locust cultivation test.

<Moisture absorption amount of filter paper placed at 10θ above ground> A wire ring similar to that installed in the locust cultivation test was placed at ground/θQCm.
Measurements were made in the same manner as in the previous case, except that it was installed at the position.

' From Tables 1 and 2, the following becomes clear.

(1) The film according to the present invention has a thickness of Q, 71111
Despite being thin at 11, it can be used over two winter seasons. On the other hand, the antifogging properties of commercially available agricultural vinyl chloride films of the same thickness are extremely reduced when used in the winter/season.

(2) When the composition of the higher fatty acid polyhydric alcohol partial ester is within the claimed range, the antifogging properties and durability of the films containing it (Examples/-6) are excellent. However, if it is outside the scope of the claims, the antifogging properties and antifogging durability of the films containing this (Comparative Examples 1 to 3) will not be very good.

(3) The film according to the present invention promotes condensation of moisture present in the space formed by the film coating on the inner surface of the film. Therefore, when used as an agricultural covering material, the moisture in the air in the space covered by the film can be reduced, the adhesion of water droplets to the surface of cultivated plants is reduced, and the occurrence of diseases in cultivated crops can therefore be reduced.

Applicant Mitsubishi Monsando Kasei Co., Ltd. Representative
Person Patent attorney Hase - (and 7 others) Procedure amendment Written on July 6, 1939/ Display of case Patent application No. 3.3'l/ Showa SG/
/ No. 2 Title of the invention Anti-fog synthetic resin film 3 Relationship to the case of the person making the amendment Patent applicant address 2-S, Marunouchi 2-chome, Chiyoda-ku, Tokyo Name (601I) Mori, Representative Director, Mitsubishi Monsando Kasei Co., Ltd. Book - Department Agent Address: 100 4 Purpose - S, 2-chome, Marunouchi, Chiyoda-ku, Tokyo Date of amendment order Voluntary amendment 6 Number of inventions increased by amendment 07 Subject of amendment Detailed explanation of the invention in the specification Column g Contents of amendment (1) On page 22 of the specification, lines 73 to 74', "
Examples include barium ricinoleate. '' has been corrected to ``Barium ricinoleate, organic phosphate compounds, hindered amine compounds, etc.''.

(2) On page 22 of the specification, line 1, the following explanation is added before the phrase "As an ultraviolet absorber."

Compounds can be given. That is, (In the formula, Rls R2 and R3 each represent an alkyl, aryl, arylalkyl, alkylaryl, or an alkyl group having an ether bond.) Examples of alkyl groups constituting Lingmian lead salt include methyl,
Ethyl, propyl, isopropyl, butyl, isobutyl, cobutyl, tert-butyl, amyl, neopentyl, isoamyl, hexyl, isohexyl, heptyl, octyl, isooctyl, co-enthylhexyl, decyl, isodecyl, lauryl, tridecyl, C32-CI5 mixed alkyl , stearyl, cyclopentyl, cyclohexyl, cyclooctyl, cyclododecyl, goomethylcyclohexyl and the like.

Examples of aryl groups include phenyl, naphthyl, and the like. Examples of the arylalkyl group (7) flu include benzyl, β-phenylether, γ-phenylpropyl, and β-phenylpropyl.

Examples of alkylaryl groups include tolyl, xylyl, ethylphenyl, ・butylphenyl, tert-butylphenyl, octylphenyl, isooctylphenyl, tertiary octylphenyl, nonylphenyl, ! , 4(-shi 3rd
Furfuryl group Examples of alkyl groups having an ether bond include furfuryl, tetrahydrofurfuryl, S-methylfurfuryl and α-methylfurfuryl groups, or methyl-, ethyl-, isopropyl-, butyl-, inbutyl-, hexyl-,
Cyclohexyl-, phenyl cellosolve residue; methyl-
, ethyl-, isopropyl-, puterni, inbutylcarpitol residues; triethylene glycol monomethyl ether, -monoethyl ether, -moptyl ether residues; glycerin/, 2-dimethyl ether, -1,3
-dimethyl ether, -/, 3-diethyl ether, -
/-ether-copropyl ether residue; examples include nonylphenoxypolyethoxyethyl and lauroxypolyethoxyethyl groups. These organic phosphorous acid compounds have a melting point of /jtO-23θC1 and an apparent specific volume of 3 to /s m
e/f is preferred.

Examples of hindered amine compounds include compounds represented by the following general formula (1).

In the formula, R4-R2 is an alkyl group having 1-d carbon atoms, an integer of ntit-*, and R is a mono-tetraacyl group derived from a 7- to 9-valent carboxylic acid. ] is a compound that is produced by

Examples of the Hifdate amine compound represented by the above formula (1) include guacetoxy-2,2,A.

6-tetramethylpipericine, diastearoyloxy-2,2J, A-tetramethylpiperidine, guacryloyloxyco, 2,1. , la -tetramethylpiperidine, q-(phenylacetoxy)-co, 2,
1. ．． A nitetrametherpiperidine, q-(phenoxyacetoxy)-,2,,2゜6.6-tetramethylpiperidine, gcyclohexanoyloxy-2,2,
6,4-tetramethylpiperidine, goupenzoyloxyco, co.

6.6-Tetramethylpipericine, Gu(〇-chlorobenzoyloxy) -2,2,6,6-titramethelpibe, lysine, +-(m-chlorobenzoyloxy) -
s, s, 6. b-Tetramethylpipericine, xi-(
p-chlorobenzoyloxy) -s, 2. b, b-tetramethylpiperidine, q-(o-)luoyloxy)
-1,,2,6.4-tetramethylpiperidine, gouisonicotinoyloxy-2,2,6,&-detramethelpiperidine, gou(2-furoyloxy)-2,2,1
,.

6-tetramethylpipericine, q-(β-naphtho"yloxy)-1,!, 6.6-titramethylbiperidine,
Bis(2,2,6,1,-tetramethyl-<1-piperidyl)oxalate, bis(2゜co,6,6-titramethyl-derpiperidyl)malonate, bis(2,1,6
, A-tetramethyl-y-piperidyl) adipate, bis(,2,,2,6゜6-tetramethyl-derpiperidyl) sepagate, bis(2,co,6,6-titramethyl-derbiperidyl) fumarate, Bis(ko, l, 6.A
-tetramethylda-piperidyl)hexahydrophthalate, bis(2,z,t,,b-tetramethylda-
piperidyl) terephthalate, tris(λ, 2,6.6
-titramethyl-q-piperidyl)benzene-t, 3.
z-) recarboxylate, tris(2,2,1,,
&-tetramethyl-to-piperidyl) doriazinko,
da, 6-docarboxylate, tris(J, 2,6.
Tris(2,2,A,6-tetramethyl-derpiperidyl)butane-/,t,3-)licarboxylate, Tetrakis(co,2,1) .,6-titrametheluderbiperidyl)propane-/,/,2゜3-tetracarboxylate,tetrakis(2,2,6,6-tetramethylderpiperidyl)butane-/,2. ．． 3.
'I-tetracarboxylate, tetrakis(2,2,
1,, A-tetramethyl-q-piperidyl)propane-
/, /,,7. ,． 7-tetracarboxylate, tetrakis(2,2,A,4-tetramethylda-piperidyl)ethene-l,/.

Co, 2-tetracarboxylate, Tris (2°2.5
4-tetramethyluda-piperidyl)-2-acetoxypropane-/12+3-) IJ carboxylate,
Tris(2,2,4,6-titramethel-q-piperidyl)-1-hydroxy-propane-/, 29. ? −)
Recarboxylate etc. can be used. "that's all

Claims (1)

[Claims] (11 Based on 700 parts by weight of synthetic resin, hexahydric alcohol (hexitol) obtained by reduction of sugars (hexose) and/or obtained by separation of 7 to 2 molecules of water from the alcohol of this A higher fatty acid polyhydric alcohol partial ester mixture obtained by esterifying polyhydric alcohols and higher fatty acids as raw materials, and
The content of diesters is 20 to 0% by weight, and the total content of monoesters and triesters is gO-20
7 to 3 parts by weight, and 3 to 2 carbon atoms
Compounds with 0 polyfluoroalkyl groups 0.0 /
An anti-fogging synthetic resin film having excellent anti-fogging properties at low temperatures and long-lasting anti-fogging properties at high temperatures, as well as excellent moisture condensation performance, which is characterized by blending the following parts by weight and forming into a film. (2) Claim (1) characterized in that in the higher fatty acid polyhydric alcohol partial ester mixture, the content ratio of diesters is greater than the sum content ratio of monoesters and triesters. The anti-fog synthetic resin film described above. (3) The antifogging synthetic resin film according to claims (1) to (2), wherein the synthetic resin is an olefin resin or a soft blended vinyl chloride resin. □ (41 polyhydric alcohol is sorbitol)
The antifogging synthetic resin film according to claims (1) to (3), characterized in that it contains a °-based polyhydric alcohol and a hamannite (mannitol)-based polyhydric alcohol. (5) The anti-fogging synthetic resin film according to claims (1) to (4), wherein the synthetic resin film is used for agricultural cover. (6) The prevention according to claims (1) to (5), wherein the higher fatty acid is a fatty acid containing palmitic acid and/or stearic acid in SO weight percent or more. Cloudy synthetic resin film. (7) Based on ioo parts by weight of the synthetic resin, (A) 7-2% of the alcohol (hexitol) obtained by reduction of sugars (hexoses) and/or these alcohols.
Polyhydric alcohols obtained by the separation of molecular water,
It is a higher fatty acid polyhydric alcohol partial ester mixture obtained by esterifying higher fatty acids as raw materials, and the content of diesters is 2θ~go% by weight, and the content is the sum of monoesters and triesters. The proportion is gO-
, 20% by weight, and (B) an alkylene oxide-added higher fatty acid polyhydric alcohol partial ester mixture having a chemical structure in which alkylene oxide is added to the above-mentioned higher fatty acid polyhydric alcohol partial ester mixture; /-t parts by weight, and (0) carbon number 3 ~
0.0 of a compound having 2o polyfluoroalkyl groups
A length-resistant synthetic resin film that has excellent anti-fogging properties at low temperatures and long-lasting anti-fogging properties at high temperatures, as well as excellent moisture condensation performance, and is characterized by blending each of the 7-co-heavy areas and forming a film. . (8) In the higher fatty acid polyhydric alcohol mixture,
The antifogging synthetic resin film according to claim (7), characterized in that the content of diesters exceeds the sum of the content of monoesters and triesters. (9) The antifogging synthetic resin film according to claims (7) to (8), wherein the synthetic resin is an olefin resin or a soft blended salt e-vinyl resin. Ql The method according to claims (7) to (9), characterized in that the polyhydric alcohol is a sorbitol-based polyhydric alcohol and a hamannitol-based polyhydric alcohol. Cloudy synthetic resin film. αυ The antifogging synthetic resin film according to claim 7 to α, wherein the synthetic resin film is used as an agricultural cover. αNo The higher fatty acid is a fatty acid containing palmitic acid and/or stearic acid in an SO weight or more.
) The antifogging synthetic resin film described in item ).