JPS5865779A - Anti-icing material composition - Google Patents

Abstract

PURPOSE:To provide an anti-icing material compsn. exhibiting an excellent effect, by mixing a specified silicone resin with an alkali metal compd. CONSTITUTION:70-99.8wt% organopolysiloxane resin having a number-average MW of 300-1,000,000 of formulaI(wherein R is H, a monovalent org. group attached to a silicon atom through a carbon-to-silicon bond; R' is H, a 1-20C alkyl, acyl, aryl, oxime residue; n, m are each less than 4 with the proviso that n+m<4) such as Z-6018 (a product of Dow Chemical) and 0.2-30wt% alkali metal compd. of formula II (wherein M is an alkali metal; X is an inorg. acid radical, hydroxyl group, an org. acid radical; a is 1-4), pref. a lithium compd. are mixed by using steel ball mill or pebble mill to disperse them in each other.

Description

[Detailed description of the invention] The present invention relates to a composition for anti-icing materials.

For more details, see Organacupressure 1] A base of xane resin is used to uniformly dissolve the alkali metal compound in the matrix! ! The idea is to coat the surface of an object with a dispersed material, and the synergistic effect of the anti-icing effect of the silicone resin and the alkaline metal composite prevents strong adhesion to the surface of the object when it freezes. - Preventing icing. The present invention relates to a material composition.

The freezing phenomenon of water is due to the formation of hydrogen bonds between water molecules at low ff1K, and exhibits a very large cohesive force.

It is said that the theoretical cohesive failure strength is In, OOO/-, but in reality, 16 to 8 nKf/- is formed between the adhesive and the measured surface, indicating an extremely large adhesion force.

This damage caused by icing and freezing occurs throughout the eastern cold region during the winter months. For example, there is the risk of ice accreting on ships and aircraft, the risk of vehicles being unable to operate or accidents due to frozen roads and railways, the cutting of power lines and the collapse of houses due to snowfall,
There are many problems including transmitter/receiver malfunctions. Of these, icing on ships 1i is the most dangerous, as icing on the ship's hull raises the center of gravity, leading to capsizing accidents. Many lives are lost every year because of this. Anti-freezing agents are sprayed to prevent roads from freezing, but if you take 5 IK- of rice, it will be 1 year per year.
It is said that the damage caused by vehicle rust and underground water contamination will amount to 100,000,000 tons. Coupled with the need for anti-icing materials for the development of North Sea oil fields, which have been active in recent years due to the depletion of oil resources.

Research and development of these materials is becoming more active.

Conventionally, as one of the measures to prevent icing, attempts have been made to reduce the icing force by applying various types of coatings f111 to the surface of objects. As the coating material, acrylic tree FrfI; 4
．． Rubber-based, fluororesin-based and silicone resin-based coating materials are known. Among these, various silicone-based organopolysiloxane resins are particularly widely used. For example, the Soviet special pestle No. 739F180 has a two-layer silicone anti-icing l! r fee is disclosed. In addition, US 13i1% Patent No. 4271215 uses a tetraalkoxytitanium compound Yr#I! in a silicone resin containing a carboxyl functional group. Discloses an anti-icing coating used as a latent catalyst.

Although it is possible to more or less reduce icing by coating the surface of an object with these paint compositions,
KFi does not completely prevent strong adhesion due to hydrogen bonding of ice, and further improvements are desired.

The inventor conducted basic research on the mechanism of icing.

As a result of classifying and examining three factors: interface science, physical, and thermodynamic, silicone-based polymers have lower icing properties than any other polymers. It was confirmed that the adhesion of ice was quite strong, and as a result of intensive research, it was discovered that icing could be completely prevented only through the synergistic effect of the combination K of an alkali metal compound with a hydrogen bond dissociation effect and a silicone resin. They discovered this and completed the present invention.

Thus, according to the invention, (A) the manure unit formula (wherein R represents a monovalent organic group or hydrogen bonded to silicon by a carbon-silicon bond, R' is hydrogen, 01-
020 represents a furkyl group, an aryl group or an aryl group. n and m in the above formula each have a value of 4 or less, and n
-4-m is less than 4) An organopolysiloxane resin with a number average molecular weight of about 300 to about 3000 expressed by 70 to 99.811 悌 and CB) Queen formula (in the formula, M is an alkali metal, There is provided a composition for an anti-icing material comprising an alkali metal compound represented by 0.2 to 3 nlil (aFi is an integer of 1 to 4).

The effects exerted by the composition of the present invention are due to the surface properties and physical properties of the organopolysiloxane resin (organopolysiloxane resin body), which is one of the constituent components of the composition, and the alkali metal compound (B) K, which is the other constituent component. This appears as a combined effect with thermodynamic effects, and can completely prevent icing.

゛In other words, organopolysiloxane resin has hydrocarbon chains arranged on its surface, so its surface energy is low, and there are very few polar components that can form hydrogen bonds, so it is used in various applications as a writing surface. It is a well-known fact that there are

The icing-reducing properties of organopolysiloxane resins (11@) are largely due to their physical properties, especially their low-temperature properties, in addition to their low surface energy. In other words, the rigidity of cedar organopolysiloxane WG1 is extremely low, and because its glass transition temperature is low, its molecular motion does not freeze even under conditions of extremely low temperatures, for example -30°C, and it exhibits extremely low rigidity, making it difficult to freeze. It is often the target of hydrogen bonds.

As described above, the icing ability is influenced not only by the surface properties of the coating film but also by the viscoelasticity of the bulk at low temperatures, and therefore the icing ability also changes depending on the thickness of the broken coating. For example, at -25℃ with a film thickness of 50 to 2 nn#m, adhesive strength #
iL2~n, 3 Kg/ad but 5~10 s m
For a thin film of , t,n increases to ~2.4 Kg/am.

Therefore, when adding, for example, 5 PHR of an alkali metal column compound to the armpit organopolysiloxane resin, 5 to 1[IJIm
Even a thin film of 100% has a water adhesion force Fin.

To explain this mechanism using a lithium compound among alkali metal compounds as an example, the L1 ion radius is small (n, 6 μm), and therefore the hydration energy is as large as 125′l4CatF/Fon (by the way, ■ Na ke 94.6KIedt/construction). Then, 5 molecules of water are adsorbed around the L1 ion, and 1r1 molecules of water are further adsorbed on the outside, but because these water molecules are too close to the Q tium ion, they have a higher energy than the hydrogen bond. Since it is adsorbed, no hydrogen bonds are formed. That is, the lithium compound trapped in the matrix of the organopolysiloxane resin is adsorbed on the surface of the coating material and does not cause water molecules to freeze, so ice does not adhere to it. Such an effect is also seen with Nao ions and Ni0 ions, but
L1e iodine is much more effective and suitable.

In the present invention, the monovalent organic group 1+ bonded to silica through the organopolysiloxane resin bond is hydrogen.

Examples of the organic group include methyl, ethyl, propyl,
Furkyl groups such as hexyl; cycloalkyl groups such as cyclohexyl, cyclobutyl, and cyclopentyl; aryl groups such as phenyl, tolyl, xylyl, and naphthyl; 7-ralkyl groups such as benzyl, phenylethyl, methylbenzyl, and naphthyl benzyl nato; vinyl, 7-lyl, Examples include fulkenyl groups such as oleyl; cycloalkenyl groups such as cyclopentadienyl and 2-cyclobutenyl; and fluorenyl aryl groups such as vinylphenyl. Among these, alkyl groups are effective in preventing icing.

In the formula, R' is not only hydrogen but also 1 such as methyl, ethyl,
C1-2o alkyl M such as propyl, butyl, amyl, hexyl, octyl; -r IJ-l group; alkyl such as acetyl, propionyl, butyryl, and the like.

The above organopolysiloxane resin used in the present invention has a number average molecular weight of about 3 nll to about 3 [1 (10°), preferably about 500 to about 2 noo, and has reactive groups such as hydroxyl groups and alkoxy groups in the molecule. Preferably used are organopolysiloxane resins having 1% Z-6018°Z-6188, Bylky
d5n, DC-3037 (DowCorni
ng company product)%KR-216, KFt-218, KSF
-1 (Shin M Near +) Corn@Product), 'I'8R-
16n, TAR-165 (Tokyo Shiba M [fimjL product).

5E1821.5K198n, 8E914n.

5RX211, PRX3n5% BH257, FJH9
551) 'tTV (Toshi silicone picture product), etc.

Typical curing mechanism tf of organopolysiloxane resin,
(f) A condensation type as shown in ic and an addition reaction type as shown in (1) K.

RR, addition polymerization type RR or J: Same as P before R and R' in the reaction formula.

The amount of organopolysiloxane resin in the composition is 99.9%.
When the amount exceeds 81 or becomes less than 7 nm (parts by weight), the icing property increases significantly.

On the other hand, the alkali metal compound represented by the general formula MaX in the composition (Bl is an organic or inorganic monobasic acid salt or polybasic acid salt. M in the above is Li,
It is an alkali metal selected from Na and K.

On the other hand & X FiFe% 01e, Br”, Ie
, OH", No!"%'2e se 2
9 00B, PO4, HPO4, 80:θ, H8oP,
Mn0P.

Or2°10. Sudonoyouna inorganic #root: 311000
ec2o: e%OH, COOθ, c, asoooo electric H (
04H40,)”.

I can do it.

Moreover, %a is determined depending on the type of inorganic acid group or organic acid group, and is usually an integer of 1 to 4.

Therefore, the following can be exemplified as representative examples of the alkali metal compounds represented by the above formula.

LiF, Llol, LiBr, Li Eng, N
aF, Na (1°NaBr, Na, KF,
KCI, KBr, K Eng, LiN0. .

NILNO3, KNOB, Li200g, Na
2003. x2No.

Li3PO4, Na3PO4, HPO4, Li2SO4
゜Na2SO4,x,so,; LiMnO4,Na
MnO4゜KMnO4, Li20r207. Na2
0r207. K,0r2o,1HCOOLi,
HCOONa, HCOOK, Li1C2Q4゜Na2O,04,K2O204,0H1000Li,
On, OOOMa.

CJOOOK, lithium citrate, sodium taene, potassium citrate, lithium chloride, bilomeri, lithium torate, etc.

Among these alkali metal compounds, chloride has the greatest anti-icing effect. However, when such a strong acid salt is used, it has the property of causing rust on the VcVi metal material, so care must be taken when using it. Then,
Carbonates and acetates are highly effective in preventing icing, and these are preferred because they have a long-lasting icing prevention effect and are less likely to cause rust. Furthermore, among these alkali-11 metal compounds, lithium compounds are preferable because they have a greater anti-icing effect than other compounds such as 1+1um compounds and potassium compounds.

Each of these alkali metal compounds 1lt1 alone or F
Two types of i or one or more of them can be used in combination, and the blend tF' is 10.2 to 30% by weight, preferably #-
j0.5-1n weight fig. If the blending amount of the alkali metal compound is less than n,2 weight range, the anti-icing effect will be significantly reduced, and if the weight of reverse KSO exceeds 1 tsf, the physical properties of the coating will deteriorate, making it unsuitable for long-term use. .

In producing the composition of the present invention, the organopolysiloxane resin and the alkali metal fraction are mixed using a general dispersion method such as a steel ball, a pebble bowl, an ace, or a triter.

When preparing the composition for use in coatings) f:Fi solvents are used as appropriate. The solvent may be any solvent that can dissolve the organopolysiloxane resin that is the base resin.
Solvents commonly used in paints, such as cyclic hydrocarbons, ketones, esters, and alcohols, can be used. Water is naturally used when the paint is a water dispersion system.

In addition to using the composition as a coating material, it can also be used as a molded product by coating it on an integral surface.

Depending on the required IFK, add pigment 1 constitution #i agent, or dye strength component (A) to component CB) (n total Jl11n011
It can be added in an amount of 1201 t parts or less based on the weight of the common part. Other surfactants and additives can also be added as appropriate.

The 1M aqueous test was carried out using a stainless steel coated plate 3 with a size of 1 nn x 1 n OX 10 cm coated with the composition of the present invention in a foamed styronyl container 2 lined with a copper plate 1 tube as shown in Fig. 1.
Place a stainless steel adhesive terminal 5 on the paint film 4 soil so that the bonded area is 51,17 ad, sandwich a thin layer 6 of 5 to lnIam of water between the adhesive terminal and the paint film, and Leave it in a freezer at -20 to -'50°C for 5 to 72 hours.

Next, in the freezer, an adhesion tester 7 manufactured by Elcometer (UK) was used.
Evaluation was made by measuring the interfacial breaking force at the ice-paint interface (unit: KfI/j).

The present invention will now be described in more detail with reference to Examples. Parts and percentages are by weight unless otherwise specified.

Example 1 100 parts of addition-polymerizable organopolysiloxane resin (trade name Bibase Resilicone 5N-T821. Non-volatile content 40 tatami) and 2 parts of vinegar ill 13 tium were mixed with alumina silicate beads having a diameter of 5 cm. -Added to 711m paint conditioner and allowed to disperse for 30 minutes. Next, 10fiB of 5ilt-18210at (manufactured by Toshi Silicone Co., Ltd., platinum-based catalyst) was added as a hardening agent, and the resulting composition was applied to a special steel plate for icing tests using an applicator, and heated at 100°C for 5 minutes. I added Mm. The dry coating thickness at this time was Fi12 J ml. The icing strength was measured when frozen at -29°C for 16 hours using the test method described above.

In addition, as a comparative example, a composition using a composition prepared in the same manner as in Example 1 except that lithium acetate was not used (Comparative Example 1-1) and a composition using a Teflon resin (polytetrafluoroethylene) with a thickness of 2- (Comparative Example 1-2)
) The icing strength was measured under the same conditions for K. The test results are shown below.

Example 2 Addition 1 type organopolysiloxane tree 11l (trade name 2-base resilicone 5nX-211, non-volatile content 40 tatami) 10
0 parts and lithium chloride n, s ii were dispersed in the same manner as in Example 1, and then platinum-based catalyst BRX was added to
A composition obtained by adding 0.6 part of -2120at (Toshi Silicone & Co., Ltd.) was coated in the same manner as in Example 1, and heated to 300°C.
The tube was heated for 2 nm to obtain a dry coated tube. The samples were frozen at -25°C for 44 hours according to the test method described above, and the icing strength at 90°C was measured.

As a comparative example, an all-cleavage composition was used in the same manner as in Example 2 except that lithium chloride was not used (Comparative Example 2-1), and an example was bonded to the thickness of Teflon resin T211m+ (comparative example). Example 2-2) For K, the icing strength was measured under the same conditions. The results of these tests are shown below.

Example 6 Parts of polycondensation organopolysiloxane resin (trade name: di-based silicone 8B-91401, non-volatile content: 4%) and 4 parts of potassium carbonate were dispersed and coated in the same manner as in Example 1. Let dry for an hour. The dry coating film at this time was t17sm.

-2ncK The icing strength was measured when frozen for 5 hours.

Comparative examples include one using a composition prepared in the same manner as in Example 3 except for using potassium carbonate (Comparative Example 5-1), and one using a composition prepared by pressing Teflon resin to a thickness of 2 cm (Comparative Example 5-1). The icing strength of Comparative Example 3-2) was also measured under the same conditions. The results of these tests are shown below.

Example 4 Polycondensation type organopolysiloxane resin (trade name: Htotz)
Disperse 1 part of 1 part of lithium citrate and 1.0 part of lithium citrate in the same manner as in Example 1, at
The sample was then left at room temperature for 24 hours to obtain a dry coating film of 5Qsln. This material was frozen at -21°C for 5 hours and the icing strength was measured.

Comparative examples include one using a composition prepared in the same manner as in Example 1 except that lithium citrate was not used (Comparative Example 4-1), and one using a composition prepared by pressing Teflon resin to a thickness of 2 m (Comparative Example 4-1). Example 4-2) For K, the icing strength was measured under the same conditions. The results of these tests are shown below.

Example 5 100 parts of condensation polymerization type organopolysiloxane resin (trade name: di-based silicone 8H-237, non-volatile content: 4O-),
2.5 parts of lithium oxalate and 40 parts of titanium dioxide were dispersed and painted in the same manner as in Example 1, and dried at 50°C for 5 hours to obtain a coating film of 15a+m. This thing -26℃
The ice was frozen for 22 hours and the icing strength was measured during running.

In addition, lithium oxalate was used as a comparative example.

Using a composition prepared in the same manner as in Example 1, except for the following, 2 ml of a running material (Comparative Example 5-1) and Teflon resin were added.
The icing strength was also measured under the same conditions for nine pieces (Comparative Example 5-2) that were crimped to a thickness of . The test results of Nire et al. are shown below.

Example 6 ST compound organopolysiloxane aqueous coating material (
Trade name: 2-base silicone, 8ffi-198 (100 parts of non-volatile content) and 100 parts of chloride) l) 1.2 parts of ram f Dispersed and coated in the same manner as in Example 1 and left to smoke at room temperature for 48 hours. After that, it was dried at 50° C. for 3 hours to obtain a coating film of 30 μm. This thing? Freezing force was measured when frozen at -20°C for 5 hours. 1. A composition prepared in the same manner as in Example 1 was used except for 1J, in which Q rum was not used. The icing strength of q7j (Comparative Example 6-1) and one in which Teflon resin was crimped to a thickness of 21111 (Comparative Example 6-2) was measured under the same conditions.

The results of these tests are shown below.

Example 7 Addition polymerization type organopolysiloxane tree @ (trade name: Toshi Silicone 8H9551R'l'V, non-volatile content 1rl1
1) 1110 parts of lithium carbonate and 10 parts of lithium carbonate were dispersed in the same manner as in Example 1, and 10 parts of platinum-based component (same as in Example 1) was added and stirred, and the resulting composition was subjected to an adhesion test. It was molded on a substrate so that it was 2 cm thick and had a uniform flat surface. After drying this product for 48 hours at room temperature, we measured the icing power when freezing it at -29℃ for 18 hours.

In addition, as a comparative example, a product prepared in the same manner as in Example 1 except that RH lithium was not used and molded using A (Comparative Example 7-1) and a Teflon resin crimped to a thickness of 2. The icing strength of the sample (Comparative Example 7-2) was also measured under the same conditions. The results of these tests are shown in the bottom manure.

[Brief explanation of the drawing]

FIG. 1 is a partial cross-sectional view of an apparatus for testing the icing properties of the composition for anti-icing materials of the present invention. 1...Steel plate 2...Styrofoam container 3...Stainless steel coating plate 4...Coating film 5...Adhesive terminal 6...Thin layer of water 7... Adhesion Testing Machine Patent Applicant (14n) Kansai Paint Co., Ltd. 1iI2] Procedural Amendment (Spontaneous) July 28, 1980 To the Commissioner of the Japan Patent Office 1, Indication of the Case (1981 Patent Application No. 11977 2, Invention Name Composition for anti-icing material 3 Person making the amendment/Relationship with 11 cases Patent applicant (140) Ilil Basito Co., Ltd. 4 Agent Heiwa Building, 2-10 Hirano-cho, Higashi-ku, Osaka Telephone: 06-203
-0941 (Main) Spontaneous 6 The number of inventions that will be increased due to the amendment will be appointed as an agent on the same date and presented to my friend. In the amendment, the statement @ in the scope of claims is corrected as shown in the attached sheet. 2. Page 2 of the specification, lines 13 to 15, ``For preventing the alkali metal compound...'' t ``By the synergistic effect of the antifreezing action of each of the P alkali metal compounds, when water freezes, It is possible to prevent particles from adhering to the surface of objects.'' 3 Lines 8 to 3 from the bottom of page 5 of the specification “A, l: L group...
...About 3,000.'' The following correction is made. ``〃 and the solution in the above formula, which represent an acyl group, an aryl group, or an o + sim group, are each a value greater than or equal to the present value, and R
4 Page 6 of the specification, line 2, ``(In the formula, M is... an inorganic acid radical.'' [``(In the formula, L is an alkali metal selected from Li, Ha, and , X is an inorganic acid group, a hydroxyl group.'' 5. Page 8, line 15 of the specification:
I have made the following corrections. "It is a compound that can be expressed in a liquid form and dispersed and/or dissolved in water and an organic solvent. The above" 6 Specification letter 9 Tei @ lines 16-17 "Several molecular weight...
...About 2,000,'' is corrected as follows. ``As mentioned above, it can be used without any restriction on molecular weight as long as it can be dispersed and/or dissolved in water and organic solvents, but the commonly used Fi number average molecular weight is about 30.
0 to about 1 million, preferably about 1000 to about 500
The range is 000. The first line from the third chemical formula on page 11 of the specification is “■,
Corrected according to the text "Addition polymerization type". “(3) ■, Addition polymerization type” 8 Line 7 from the bottom of the formula on page 12 of the specification to line 1 on page m14 “Alkali metal compounds (to) include, rivers, lithium, etc.
” is corrected as follows. [M in the alkali metal compound @ is an alkali metal selected from Li, Na, and
is suitable. Moreover, Monoatomic and N such as Bye and le
Oθ, Ca2O, PO30, MPo 20%50, 2θ
, 3 3 a
Pot H5Oe, MsOθ, Cry2θ
, 5 s Oa"θ, 5tOX". 4 Pot 27B ()
0, yOm, rro, "e nato oz 5 'aa+" can include 2 4 subgroups. In addition, organic acid radicals include metals and Refers to the remaining portion after removing one or more substitutable hydrogen atoms, such as HC000 and general formula CB3(CH2), 1COO
Saturated monocarboxylic acid group represented by e (S: an integer of 0 to 20); general formula: silicic acid group; unsaturated acids such as maleic acid, oleic acid, linoleic acid, and other tartaric acid groups ~QC-(CMOR) -Cαβ, polyvalent carbodiic acid roots such as trimellitic roots, and the like. Further, it is determined depending on the type of aFi inorganic acid radical or organic acid radical, and is usually an integer of 1 to 4. Therefore, the following examples can be given as substitute examples of the alkali metal compounds represented by the above formula. LiF, LiC4, LiBr, Lil, N
sF, NaC4゜NaBr, Mal, niF,
C4, KHr, Kl. LiNO3, NaNO3, KhO,, Li2CO3, N
a2DO,. K2No, , Li5PO, , Ng3PO, , nipo
, . Li250. , Na25o, , K2S0. J
Li1lsO,. # d # Oa e KMn'a # L J aCr
207 @ Na2Cr 207 #2Cr207.
LiQSt, , Li25in3. Ng, 540
．． . Ha2St, 3. K, SiO,, K2S5O,, Li
BO2゜NaBO2, BO2, Li2CO3, Na5
VOa, 3"II" L s 10. tNa r
,, 104s HCOOLi. HCOONa, l'1cOOK, Li2C20
,,Na2C20,. 2C,0,, CM3C0OLi, CM3C0O
To Na, CM, and Coo. C2H, COOLi, Li00C-CM2-COO
Li, Kueh, J# lithium, sodium citrate, potassium Kueh, lithium tartrate, lithium trimellitate, go0me, lithium nitrate &9 Specification No. 15
Page 12, line 12, ``In addition to being used as paint,'' the following passage 9 has been corrected. [Undercoat as a second layer paint! t on top of III! In addition to being applied as a single coat, it can also be applied directly to metals, plastics, glass, wood materials, etc. In addition, the composition is] 10 Specification, page 16, lines 7-8 "Adhesion test 117...
...Measure" is replaced with "Measure the interfacial breaking force at the ice--expanded interface by pulling the adhesive terminal 1 upward with the adhesive testing machine 7 using the measuring sieve 9.'' ■ Specification @ 17 Page tX line 6 - 4th line from the bottom says ``Comparative example...Example 2'' tThe following 9 corrections are made. "As a comparative example, a composition prepared in the same manner as in Example 1 was used except that lithium acetate was not used (Comparative Example 1-1), and a composition prepared using the same amount of barium sulfate instead of lithium acetate was used. were prepared in the same manner as in Example 1 and used a hole composition (Comparative Example 1-2), and were crimped to a thickness of 2 ml of Def0shi* fat (Comparative Example 1-2). The icing strength of 3) was measured under conditions similar to %14.The test results are shown below. ...Example 3" is corrected as follows. As a comparative example, a composition t'' was prepared in the same manner as in Example 2 except that lithium chloride was not used.
(Comparative Example 2-1), one using the same amount of vinyl chloride instead of lithium chloride (Comparative Example 2-2), and one using a composition prepared in the same manner as in Example 1 of a non-selling company (Comparative Example 2-2); The icing strength of the resin (Comparative Example 2-3) which was crimped to a thickness of 2 sg was also measured under the same conditions. The results of these tests are shown below. Example 3'' 13 Akira - On page 23 of the letter, the second line from the bottom reads ``7...Hard adhesion tester.'' The following Haruka 9 is corrected. "7...Adhesion tester 8...Support stand 9...Measuring tube 10...]Isiszurisik!l..."Muba+shi" 14 Details The statements in this document will be corrected as shown in the errata below. 15 Figure 1 1 - amended as per the attached sheet, (above) Claims ■ (2) The following unit formula % formula % (wherein R is a monovalent organic group bonded to silicon through a back element-silicon bond, or represents hydrogen, R/ is hydrogen, C□~C
2゜A+R group, S and m in the acyl formula are each (
The value of the main image, and less than fog + mJfi4) O L Kanoborishi 0 + Sashi resin 70 to 99.
8% by weight and (1) an alkali metal compound represented by the following formula (where M is an alkali metal, and X represents an inorganic acid group, a hydroxyl group, or a perorganic acid group; 1 is an integer from 1 to 4); A composition for anti-icing material comprising 30% by weight. 2. The icing prevention/material composition of claim 1, wherein the ashikali metal compound is a lithium compound.

Claims (1)

[Scope of Claims] 1(A) The following unit formula % formula % (wherein R represents a monovalent organic group bonded to silicon through a carbon-silicon bond, or hydrogen. R' is hydrogen, alkyl of 01 to 020 group, 7 represents a group or an aryl group. n and m in the above formula are each 4
and (B) an organopolysiloxane resin having a number average molecular weight of about 300 to about 3,000 (70 to 99.8 weight) and (B) the following formula (in which M is an alkali metal, ! indicates an inorganic acid group or an organic acid group, and is an integer from 1 to 4) A composition for an anti-icing material consisting of an alkali metal fraction of 0.2 to SO by weight. ! , #The composition for an anti-icing material according to claim 1, wherein the alkali metal compound is a lithium compound.