JPS60158249A - Resin composition for matte type process release paper - Google Patents

Abstract

PURPOSE:To provide the titled compsn. which is a matte type and has excellent heat resistance and release properties, consisting of a specified alkyd resin or acrylic resin, an amino resin or an isocyanate compd., an inorg. filler or a matting wax and an acidic catalyst. CONSTITUTION:5-450pts.wt. alkanol-modified amino resin or isocyanate compd., 1-150pts.wt. matting wax or inorg. filler which has a particle size of 0.01-20mu and is neutral or acidic, and 0-20pts.wt. acidic catalyst such as p-toluene-sulfonic acid are blended with 100pts.wt. silicone-modified alkyd resin or silicone- modified acrylic resin modified with 0.1-50wt% organopolysiloxane contg. 15 to 50mol% of phenyl group and at least one hydroxy-substd. org. group of the formula (wherein R is a bivalent hydrocarbon group; a is 0, 1) attached to Si atom.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a process release resin composition, particularly a matte process release resin composition.

Conventionally, three types of resin compositions have been known as typical resin compositions for improving the surface releasability (peelability) of engineered paper: polypropylene, aminoalkyd resin, and silicone. As for molds, polypropylene-based ones are mainly used. However, although this polypropylene-based material has excellent durability during repeated use, it has the disadvantage that the heat resistance of the coating film is poor, which limits its use at high temperatures, and the peeling surface is easily damaged. Alkyd resin-based products have excellent heat resistance and gloss control, but they lack mold release properties, so there is a problem in developing matte types, and silicone-based products have excellent releasability. It has gloss control,
Since there is a problem in the uniformity of the coating surface, there is a problem that it is not necessarily satisfactory for use on matte type synthetic leather.

Furthermore, the present inventors have previously described the modification with an organopolysilochitin having a hydroxy-substituted organic group in which 15 to 50 mol% of the organic groups bonded to silicon atoms in one molecule are phenyl groups. We have developed a resin composition consisting of a silicone-modified alkyd resin or silicone-modified acrylic resin, an alkanol-modified amino resin or a polyisocyanate compound, and an acidic catalyst (Japanese Patent Application Laid-Open No. 1983-1992).
No. 0548, JP-A-56-11980, JP-A-56-
14550, Japanese Patent Application Laid-open No. 14566/1983), these provide a process release paper with good releasability, but they also provide a product with excellent gloss, so they are not suitable for the purpose of obtaining a matte type product. The disadvantage was that it could not be used.

The present invention relates to a matte type process release resin composition which solves these disadvantages, and which consists of (a) 15 to 15 organic groups bonded to silicon atoms in one molecule;
50 mol% is a phenyl group, and at least one of the remaining organic groups is of the formula %) (R in the formula represents the same or different divalent hydrocarbon group,
100 parts by weight of a silicone-modified alkyd resin or silicone-modified acrylic resin modified with an organopolysiloxane which is a hydroxy-substituted organic group represented by (a is 0 or 1).

1 mouth) Alkanol-modified amino resin or polyisocyanate compound 5 to 450 parts by weight, (1) A degree is 0.0
It is characterized by comprising: 150 parts by weight of a neutral or weakly acidic inorganic filler or matting waxt having a particle size of 1 to 20μ, and (d) 0 to 20 parts by weight of an acidic catalyst.

To explain this, the present inventors have conducted various studies on methods for making a process release resin composition containing the above-mentioned silicone-modified alkyd resin or silicone-modified acrylic resin as a matte type.

It was discovered that it is sufficient to add a finely powdered inorganic filler or a matte wax to this, and by doing so, a matte type process release resin composition that has good heat resistance and provides a strong film can be obtained. The present invention was completed after confirming that this is possible.

The component (a) constituting the resin composition of the present invention is a silicone-modified alkyd resin or a silicone-modified acrylic resin. An organopolysiloxane in which 50 mol% is a phenyl group, and at least one of the remaining organic groups is a hydroxy group-substituted organic group represented by the formula (1) (R and a are as described above). The remaining organic group may be an alkyl group such as a methyl group, an ethyl group, an octyl group, or an alkyl group replaced with a herogen, a cyano group, or the like. As mentioned above, the molecular structure of this organopolysiloxane has excellent heat resistance, and as long as the object or effect of the present invention of obtaining a process release paper with good peelability is achieved, the molecular structure is a straight octopus-like structure, a branched chain structure, etc. It may have any type of molecular structure (three-dimensional structure), but it is desirable that it has relatively good compatibility with alkyd resins and acrylic resins, and specific examples of preferable molecular structures include those of the following formula. In this above formula, Me is a methyl group, ph is a phenyl group, %m, n is a positive integer, and m
+n is set to 30 to 1000, preferably 50 to 200, and R1 represents an organic group, at least one of which is a hydroxy group-substituted organic group represented by the above formula (1), and among all organic groups, phenyl The remaining group in R1 may be an alkyl group such as a methyl group, an ethyl group, an octyl group, or an alkyl group substituted with a herogen or a cyano group. In the present invention, the amount of phenyl groups in the organopolysiloxane is set to 15 to 50 mol%, and at least one of the remaining organic groups is a hydroxy group-substituted organic group represented by the formula (1) above, because: This is because by using such an organopolysiloxane, performance such as releasability, gloss, and repellency against synthetic leather resins can be satisfied. In the hydroxy group-substituted organic group of formula (I), R is a divalent hydrocarbon group, a represents 0 or l, and examples of such organic groups include 10) T20H2-1-CH20H20H2-.

-(OH2), -8-((,R2).-(b is 1 or 2%, 0 is 2 or 3) are exemplified.

The method for obtaining the silicone-modified alkyd resin or acrylic resin, which is the component (A), using the above organopolysiloxane is mainly carried out by (1) the usual synthesis reaction for obtaining the alkyd resin, namely, polyhydric alcohol, fatty acid, polybasic A method in which the organopolysiloxane is simultaneously reacted when reacting with an acid, etc., or when polymerizing a hexamer such as an α,β-unsaturated acid or an ester thereof, in a normal synthesis reaction for obtaining an acrylic resin, (2) There are two methods: reacting a pre-synthesized general alkyd resin or acrylic resin with an organopolysiloxane. V silicone modification of alkyd resin or acrylic resin may be carried out by any of the above methods, but in this case, the amount of organopolysiloxane used is 0.1% based on the solid content of silicone-modified alkyd resin or silicone-modified acrylic resin. ~50% by weight, preferably 1-40% by weight
It is desirable to do so. In addition, as the alkanol-modified amino resin which is a component constituting the resin composition of the present invention, any commercially available resin can be used, including methoxymethylolmelamine resin, butoxymethylolmelamine resin, Examples include methylol melamine resin, butquin methylol urine-melamine cocondensation resin, and butoxymethylol benzoguanamine resin. In addition, as the polyisocyanate compound, tolylene diisocyanate, 4,4'-diphenylmethane diisocyanate, xylene diisocyanate, hexamethylene diisocyanate, etc. may be used as they are or in a mixed quantity, but these may have toxicity and storage stability. From the viewpoint of It is preferable to use combination or the like.

The blending ratio of component (a) and component (q) is 1 of component (a).
It is desirable to add 450 parts by weight to component t5 per 00 parts by weight, and if it is outside this range, it will not be possible to obtain a process release paper with the desired excellent performance. 1 if used
It may be up to 50 parts by weight.

The component (c) constituting the acid of the present invention is Special C: It is added to make this composition matte, and it is an inorganic filler with a particle size of 0.01 to 20μ. Examples of C2 include inorganic fillers such as fine silica powder, and synthetic wax matte waxes such as polyethylene wax. The viscosity is from 0.01 to 0.01 due to the stability of the coating and the uniformity of the coated surface.
20. It must be in the μ range. The amount of these additives is determined by the above-mentioned silicone-modified alkyd resin or acrylic resin C; however, if it is too small, the matting effect will not be sufficient, and if it is too large, the peeling force will be heavy and peeling will become difficult. This must be in the range of 1 to 50 parts by weight per 100 parts of silicone-modified alkyd resin or silicone-modified acrylic resin, and this amount depends on the degree of gloss of the desired matte type product. Just adjust it.

In addition, as the acidic catalyst which is a component (i) of this resin composition, para-toluenesulfonic acid, hydrochloric acid, etc. used in ordinary amino alkyd resins are exemplified, and these are added in an amount of 20 parts by weight per 100 parts by weight of component (a). The following may be added, but (
(b) When the component is a polyisocyanate, there is no need to add it in particular.

The resin composition of the present invention can be obtained by mixing the above-mentioned components (a) to (a). From the standpoint of obtaining a resin composition for process release paper, 5 to 5 parts of (a) component per 100 parts by weight of component (1)
450 parts by weight, () 1 to 150 parts by weight of 9 components, (to)
It is desirable that the content of the components be 0 to 20 parts by weight; if the content is outside this range, the above-mentioned preferred physical properties cannot be obtained.

The resin composition for process release paper of the present invention may contain ordinary alkyd resins and acrylic resins, if necessary.

There is no problem in blending silicone-modified acrylic resin or the like.

The resin composition of the present invention is usually conveniently used as a solvent solution, and the solvent used for this purpose is one that does not have reactivity with component (a) or component (b). For example, one or a mixture of two or more of benzene, toluene, xylene, methanol, ethanol, isobutanol, n-butanol, methyl ethyl ketone, acetone, and tetrahydrofuran may be used, but the amount used is usually based on the resin. Solid crab 10~
It may be within a range of 60%.

The resin composition obtained by the above method is applied to coated paper C and cured by heating at 130 to 200°C to give a matte process paper with excellent releasability. The process release paper obtained is matte compared to conventional process paper, and has superior C: peelability and heat resistance, and can be processed at high temperatures for short periods of time when producing synthetic leather. Because of this, we can expect rationalization in terms of production.

In addition, the release agent obtained by the present invention has a strong coating film and repeatable removability (both are excellent).

Next, examples of synthesizing the silicone-modified alkyd resin and silicone-modified acrylic resin constituting the composition of the present invention and examples of the composition of the present invention using the same will be given. This shows the measured values at 25°C.

Synthesis Example 1 [Synthesis of organopolysiloxane] Both ends of the molecule are blocked with dimethylvinylsiloxy groups,
Viscosity 19 whose main chain is composed of 65 mol% dimethylsiloxane units and 35 mol% diphenylsiloxane units
Raw material diorganopolysiloxane 700y-12-mercaptoethanol 1 with 00 centipoise (25°C)
3.35', benzophenone 2I as a photoreaction accelerator
P, and 700 tons of toluene as a reaction medium are charged into the flask, and then 100 W is charged from the top into the flask.
A high-pressure mercury lamp was inserted and irradiated for 2 hours to cause a reaction.

When toluene was distilled off from the reaction mixture under reduced pressure, both ends of the molecular chain of the above raw material diorganopolysiloxane were found to have the formula
M.

A hydroxy group-substituted organic group-containing diorganopolysiloxane having a viscosity of 2500 centipoise and having a main chain having a similar structure is converted into a structure shown in e.
5 IP was obtained.

Synthesis Example 2 [Synthesis of organopolysiloxane] Both ends of the molecular chain are blocked with dimethylvinylsiloxy groups,
The main chain is composed of 75 mol% of dimethylsiloxane units and 25 mol% of diphenylsiloxane units, and has a viscosity of 10.
Raw material diorganopolysiloxane with 0.00 centivoise (25°C) 1000? , 2-mercaptoethanol 1
6 parts, 4 parts of benzophenone, and 1000 parts of toluene.
When P was placed in a flask and reacted by irradiation with light in the same manner as in the previous example, both ends of the molecular chain of the raw material diorgal polysilokinane had the formula M8 1(0(Of(2), 8(O)T2), -810 −
(2) Diorganopolysiloxane 1005P containing a hydroxy group-substituted organic group and having a viscosity of 2000 centivoise (25° C.) and having a main chain having a similar structure was obtained.

Synthesis Example 3 [Synthesis of organopolysiloxane] Both ends of the molecular chain are blocked with dimethylvinylsiloxy groups,
The main chain is composed of 85 mol% of dimethylsiloxane units and 15 mol% of diphenylsiloxane units, and has a viscosity of 30.
Raw material diorganopolysilochitin 800 with 0 centivoise (25°C)! i! -12-mercaptoethanol 40P, benzophenone 5? Further, 800 tons of toluene was charged into a flask and irradiated with light in the same manner as in the previous example to cause a reaction. As a result, both ends of the molecular chain of the raw material diorganopolysiloxane were expressed as follows.

)To(OR,), S(OH2), -8i0-e A hydroxy group-substituted organic group having a viscosity of 800 centivoise (25°C) whose main chain has a similar structure. Contains diorganopolysilochitin of 830? Obtained.

Synthesis Example 4 [Synthesis of silicone-modified alkyd resin] 109 parts of hydroxy-substituted organic group-containing diorganopolysiloxane obtained in Synthesis Example 1, 172 parts of coconut oil fatty acid, 249 parts of phthalic anhydride.
and 169 parts of glycerin were charged into a reactor and reacted for about 8 hours at an internal temperature of 150 to 200°C in a nitrogen gas atmosphere, and then diluted with toluene so that the solid content was 60% by weight to modify the silicone. 1080 parts of alkyd resin liquid was obtained. The physical properties were as follows.

Viscosity (Note) D Acid value 3.0 Hydroxyl value 65 (Note) The viscosity is the value determined by Gardner viscometer (25°C) or less. Same as Synthesis Example 5 57 parts of diorganopolysiloxane containing a dioxylic acid group, 180 parts of coconut oil fatty acid, 260 parts of phthalic anhydride, and 177 parts of glycerin were charged into a reactor, and Synthesis Example 4 was prepared.
The mixture was reacted in the same manner as above and diluted with toluene to obtain 1040 parts of a silicone-modified alkyd resin liquid with a solid content of 60% by weight. The physical properties were as follows.

Viscosity H Acid value 2.6 Hydroxyl value 73 Synthesis example 6 [Synthesis of silicone-modified alkyd resin] 32 parts of hydroxy-substituted organic group-containing diorganopolysilochitin obtained in Synthesis example 3, 201 parts of coconut oil fatty acid, anhydrous Phthalic acid 290
and 197 parts of glycerin were charged into a reactor and reacted in the same manner as in Synthesis Example 4, diluted with toluene to reduce the solid content to 60 parts.
Heavy front pole silicone modified alkyd mlllW liquid 1100
I got the department. The physical properties were as shown below.

Viscosity K Acid value 2.8 Hydroxyl value 76 Synthesis example 7 [Synthesis of silicone-modified alkyd resin] 30 parts of diorganopolysilochitin obtained in Synthesis example 1, 224 parts of soybean oil fatty acid
249 parts g of phthalic anhydride and 169 parts glycerin were charged into a reactor and reacted in the same manner as in Synthesis Example 4. The mixture was diluted with toluene to obtain 1040 parts of a silicone-modified alkyd resin liquid having a solid content of 60 g. The physical properties were as shown below: - Viscosity - J Acid value 3.5 Hydroxyl value 70 Synthesis Example 8 [Synthesis of silicone-modified alkyd resin] Hydroxy group-substituted organic group-containing diorganopolymer obtained in Synthesis Example 1 29 parts of siloxane, 232 parts of castor oil, 215 parts of phthalic anhydride B and 158 parts of trimethylolpropane were charged in two reactors C, and reacted in the same manner as in Synthesis Example 4. Diluted with toluene to obtain a solid content of 60 parts. Silicone modified alkyd resin liquid 101
I got 0 copies. The physical properties were as follows: 〇Viscosity z
3 Acid value 5.8 Hydroxyl value 71 Synthesis example 9 [Synthesis of silicone-modified alkyd resin] 28 parts of the hydroxy-converted organic group-containing diorganopolysilochitin obtained in Synthesis example 1 and 172 parts of coconut oil fatty acid were placed in a reactor. Preparation,
The reaction was carried out at an internal temperature of 180° C. for 3 hours in a nitrogen gas atmosphere (at this time, the contents had an acid value of 224 and was amber). this(:
Further g: Add 86 parts of ethylene glycol, 94 parts of pentaerythritol, and 249 parts of phthalic anhydride, and add 15 parts of ethylene glycol.
After reacting at 200°C for 8 hours, the solid content was diluted with toluene to obtain 960 parts of a silicone-modified alkyd resin liquid.The physical properties are as follows. there were.

Viscosity M Acid value 4.0 Hydroxyl value 65 Synthesis example 10 [Synthesis of silicone-modified alkyd resin 3] Hydroxy-substituted W group-containing diorganopolysilochitin obtained in Synthesis Example 1 35 parts 3 and Tokushima essential oil Coconut oil modified alkyd resin (
50% xylene solution of Togesinol 2420-50) (
700 parts of oil length 20, viscosity 2, acid value 15, and hydroxyl value 95 measured at 25°C using a Gardna viscometer were charged to reactor C, and the internal temperature was 130 to 150 in a nitrogen gas atmosphere.
After reacting at ℃ for about 5 hours, the solid content was 50% by weight (diluted with nitoluene to obtain 760 parts of silicone-modified alkyd resin liquid).

Viscosity W Acid value 12.0 Hydroxyl value 82 Synthesis example 11 [Synthesis of silicone-modified acrylic resin] '4 in synthesis example 1
! 40 parts of a diorganopolysiloxane containing a hydroxy group-substituted organic group and 304 parts of xylene were charged into a reactor, and the internal temperature was raised to 125-130°C under a nitrogen gas atmosphere. The mixture was added dropwise at a constant rate over a period of 3 hours.

Methacrylic acid 40 parts Methyl methacrylate 180〃 Butyl methacrylate son Styrene 60 parts□ 2-Hydroxyethyl acrylate 40〃α,α
'-Azobisisobutyronitrile 11'//G-t-
Butylveroxytide 2〃 After the dropwise addition, the reaction was continued for 5 hours at the same temperature to obtain 755 parts of a silicone-modified acrylic resin liquid. The physical properties of this product were as shown in C2 and B below.

Solid content 60.5% Viscosity (support) T Hydroxyl number 25 (Note) Viscosity is the value determined by Gardner viscometer (25°C), the same applies hereinafter.

Synthesis Example 12 [Synthesis of silicone-modified acrylic resin] 40 parts of hydroxy-substituted organic group-containing diorganopolysilochitin obtained in Synthesis Example 2 and 304 parts of xylene were charged in two reactors C, and a mixed solution similar to Synthesis Example I11 was added. was added dropwise over a period of 3 hours to react, thereby obtaining 760 parts of a silicone-modified acrylic resin liquid. The physical properties of this product were as follows: Solid content 60.7% Viscosity 8-'r Hydroxyl value 25 Synthesis Example 13 [Synthesis of silicone-modified acrylic resin] Hydroxy group-substituted organic compound obtained in Synthesis Example 3 40 parts of group-containing diorganopolysilochitin and 304 parts of xylene were charged into two reactors C, and a mixed solution similar to that of Synthesis Example 11 was added dropwise over a period of t3 hours to react, thereby obtaining 760 parts of a silicone-modified acrylic resin liquid. The physical properties of this product were as follows.

Solid content 60.5% Viscosity S Hydroxyl value 25 Synthesis Example 14 [Synthesis of silicone-modified acrylic resin] Reaction of 80 parts of the hydroxy-substituted gastrointestinal group-containing diorganopolysilochitin obtained in Synthesis Example 1 with 331 parts of xylene. Vessel I: Preparation, 125
The temperature was raised to ~130°C, and a mixed solution of the following was added dropwise over a period of 3 hours.

Acrylic acid 40 parts Methyl methacrylate 120 Butyl acrylate 200 2-hydroxyethyl acrylate 40 α,α'-azobisisobutyronitrile 11 Di-t-butyl peroxide 2 Same temperature after completion of dropping The reaction was continued for 5 hours to obtain 820 parts of silicone-modified acrylic resin.The physical properties of this material were as follows: Solid content 59.8% Viscosity K Hydroxyl value 23 Synthesis Example 15 [Silicone-modified acrylic resin] Synthesis] 42 parts of hydroxy-substituted organic group-containing diorganopolysilochitin obtained in Synthesis Example 1, Tesroid 795 [manufactured by Tokushima Essential Oil ■, acrylic resin, viscosity R1 acid value 7.0, hydroxyl value 72.60%
Charge 700 parts of xylene solution to reactor C2, 130~
The reaction was carried out at 180° C. for about 5 hours to obtain 742 parts of silicone-modified acrylic resin. The solid content of this product is 60% by weight C.
Diluted twice with xylene.

Viscosity: 0 Acid value: 6.3 Hydroxyl value: 66 Example 1 60 parts of the silicone-modified alkyd resin liquid obtained in Synthesis Example 4 and Tesmin 350-60 [manufactured by Tokushima Essential Oil ■, butylated urea]
Melamine co-condensation resin] 2,006 rpm using a C Nihomo mixer [manufactured by Tokushu Kika Kogyo ■] in a composition with 40 parts
After dispersing 12 parts of silica fine powder Cykuoid 244 (product name manufactured by Fuji Davison Chemical ■), dryer 5
0 [Made by Tokushima Essential Oil ■, acid curing agent] 3 parts solid content 30% (
Dilute it with dolol to make it second.

Next C2 varnish request) Paper [Kanzaki Paper @1m.

Mirror coated paper, 130 J7/ni'
When a process release paper was made by curing for XI minutes, the gloss (75°, manufactured by Murakami Color Technology Research Co., Ltd.) was 2.0%.

In addition, a one-component polyurethane solution (manufactured by Dainippon Ink and Chemicals, Crisbon 5516S) was coated on the release paper so that 30 parts g of the Y coating film was applied, and 1
After drying at 30°C for 2 minutes and performing a peeling force test (two tests), the peeling force at this time was 10 g/3ffi, and the third peeling force after repeated use was 15 g/3 CrrL.

Example 2 After dispersing 12 parts of silica fine powder Thyloid 244 (mentioned above) in 60 parts of the silicone-modified alkyd resin and 350-60.40 parts of Tesmin in the same manner as in Example 1 in Synthesis Example 5, A complete release paper was prepared in the same manner as in Example 1 by adding 3 parts of 50% dryer, and the gloss and peeling force were measured in the same manner.This paper had a gloss of 2.5% and a peeling force of IQ.
Fl/3C71L, <The peeling force at the third time of repeated use was 12p/3cR.

Examples 3-11 60 parts of silicone-modified alkyd resin or silicone-modified acrylic resin obtained in Synthesis Examples 6-14 and Tesmin 350
-60.40 parts, silica fine powder thyroid 244.12
A release paper was prepared in the same manner as in Example 1 using 5 parts of 50 parts and a dryer, and the gloss and release force Y were measured in the same manner.The results shown in the following $1 table were obtained. In this case, no scratches were expected on the peeled surface even after repeated use. Mixed with 40 parts @C:
Sono V-tar (manufactured by Sonic Corporation) Long-lasting fine powder silica Aerosil HK125 (trade name manufactured by Nippon Aerosil Corporation)
After dispersing 12 parts, dryer 50 (mentioned above) 3
A process release paper was prepared in the same manner as in Example 1 with the addition of
When the gloss and peeling force were similarly measured, the gloss was 7%.
, Peeling force 15g/3cIrL, Peeling force 20g/3/'il after repeated use for the third time! Example 13 60 parts of the silicone-modified alkyd resin obtained in Synthesis Example 5, 40 parts of Tesmin 350-60 (mentioned above), and C were finely powdered using a homomixer. After dispersing 12 parts of silica Mizukasil P-801 (trade name manufactured by Mizusawa Chemical Co., Ltd.), dryer 5
A process release paper was prepared in the same manner as in Example 1 by adding 3 parts of C. /3C1ll, the peeling force was 12g/3cIIL at the third time of repeated use, and no scratches occurred on the peeled surface.

Example 14 60 parts of the silicone-modified alkyd resin obtained in Synthesis Example 4, 348 parts of butylated melamine resin (made by Tokushima Essential Oil ■), and 266 parts of finely powdered silica thyroid (Neoglen Mill (manufactured by Asada Tekko Co., Ltd.)) After dispersing 12 parts (scratching), 6 parts of dryer 50 (@extrusion) was placed on it, and a process release paper was prepared by f2 in the same manner as in Example 1.
When the gloss and peeling force were measured in the same way, the gloss was 2.
3%, peeling force 12. Ii+/3cIIL, <Peeling force after 3rd use: 15. ! At i+/3cm, this peeling surface g
: It only takes one force to cause scratches.

Example 15 80 parts of silicone-modified alkyd resin obtained in Synthesis Example 10,
Tesmin 201-80 (manufactured by Tokushima Essential Oil ■, 315 parts of methylated melamine resin, 266 parts of finely powdered silica thyroid)
After dispersing 9 parts of (mentioned above), 3 parts of dryer 50 (mentioned above) was added, and process release paper was prepared in the same manner as in Example 1, and the gloss and peeling force were similarly measured. Gloss 2.5%, peeling force 8.19 parts 3cm, peeling force 10.9/3cI after repeated use for the third time! L, there were no scratches on the release paper surface.

Example 16 80 parts of silicone-modified Agril resin obtained in Synthesis Example 11,
After dispersing 70 parts of polyethylene wax L-800 (trade name of Nippon Bolicon Kogyo Co., Ltd.) and 6 parts of finely powdered silica thyroid 244 (@de) into Tesmin 201-80 (cut out) using a homomixer, This is C Nido Tsuiya-50
Add 6 copies of (mentioned above) and use 1 ml as in Example 1 to prepare process release paper, and in the same manner (= gloss, peeling force) When all measurements were taken, this was 8% gloss and 15.!i+ /3cIL,
The peeling force at the third time of repeated use was 18j7/3cWl.

Example 17 60 parts of the silicone-modified alkyd resin obtained in Synthesis Example 1 and 15 parts of Tesmin 201-80 (mentioned above) were mixed with 9 parts of Hiwax 400P (trade name manufactured by Mitsui Petrochemical Industries, Ltd.) in Disper (Tokushu Kikaku Co., Ltd.). After dispersing with Kogyo Co., Ltd., 6 parts of Dryer 50 (mentioned above) was added, and the same procedure as in Example 1 was carried out! =Cleaning process Release paper was prepared, and the gloss and peeling force were all measured in the same way.The gloss was 7%, the peeling force was 13 g/3 (m), and the peeling force after repeated use was 18 g/3 (m). Paper surface g: There were no scratches.

Patent originator Shin-Etsu Chemical Co., Ltd. Tokushima Essential Oil Co., Ltd. Continued from page 1 ■ Int, C1,' Identification code Internal reference number 0 Inventor Fumiaki Mori 3-8-4-4 Kitadamiya, Tokushima City Tokushima Essential Oil Co., Ltd. Inside the company

Claims (1)

[Claims] 1. (a) 1 of the organic groups bonded to a silicon atom in one molecule;
5 to 50 mol% is a phenyl group, and at least one of the remaining organic groups is 2HO-R-(8)a-R- (R in the formula represents the same or different divalent hydrocarbon group. represents,
100 parts by weight of a silicone-modified alkyd resin or silicone-modified acrylic resin modified with organopolysiloxane, which is a hydroxy group-exchangeable organic group represented by (a is 0 or 1); 5-450 parts by weight, 01 particle size is 0.01-
1 to 150 parts by weight of a neutral or weakly acidic inorganic filler or matting wax having a particle size of 20μ; and (d) 0 to 20 parts by weight of an acidic catalyst.