CN102471578B - Curable organopolysiloxane composition and sheet-form article having a cured layer obtained therefrom - Google Patents

Curable organopolysiloxane composition and sheet-form article having a cured layer obtained therefrom Download PDF

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CN102471578B
CN102471578B CN201080028664.9A CN201080028664A CN102471578B CN 102471578 B CN102471578 B CN 102471578B CN 201080028664 A CN201080028664 A CN 201080028664A CN 102471578 B CN102471578 B CN 102471578B
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cured layer
base material
curable organopolysiloxane
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organopolysiloxane composition
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CN102471578A (en
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山田修二
山田高照
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DuPont Toray Specialty Materials KK
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Dow Corning Toray Co Ltd
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    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L83/00—Compositions of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon only; Compositions of derivatives of such polymers
    • C08L83/04—Polysiloxanes
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
    • C08J5/18—Manufacture of films or sheets
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J7/00—Chemical treatment or coating of shaped articles made of macromolecular substances
    • C08J7/04—Coating
    • C08J7/0427—Coating with only one layer of a composition containing a polymer binder
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J7/00—Chemical treatment or coating of shaped articles made of macromolecular substances
    • C08J7/08—Heat treatment
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D183/00—Coating compositions based on macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon, with or without sulfur, nitrogen, oxygen, or carbon only; Coating compositions based on derivatives of such polymers
    • C09D183/04—Polysiloxanes
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J7/00—Adhesives in the form of films or foils
    • C09J7/40—Adhesives in the form of films or foils characterised by release liners
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G77/00—Macromolecular compounds obtained by reactions forming a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon in the main chain of the macromolecule
    • C08G77/04—Polysiloxanes
    • C08G77/12—Polysiloxanes containing silicon bound to hydrogen
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G77/00—Macromolecular compounds obtained by reactions forming a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon in the main chain of the macromolecule
    • C08G77/04—Polysiloxanes
    • C08G77/20—Polysiloxanes containing silicon bound to unsaturated aliphatic groups
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2483/00—Characterised by the use of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon with or without sulfur, nitrogen, oxygen, or carbon only; Derivatives of such polymers
    • C08J2483/04—Polysiloxanes

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Thermal Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Laminated Bodies (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Paints Or Removers (AREA)
  • Coating Of Shaped Articles Made Of Macromolecular Substances (AREA)
  • Adhesives Or Adhesive Processes (AREA)

Abstract

A curable organopolysiloxane composition comprising (A) at least one organopolysiloxane that has a viscosity of 20 to 500 mPa. s and a content of higher alkenyl in the range of 1.0 to 5.0 mass%, (B) organopolysiloxane that has a viscosity of at least 1,000,000 mPa. s and an alkenyl content of 0.005 to 0.1 mass%, (C) an organohydrogenpolysiloxane, and (D) a platinum-type catalyst. The cured layer exhibits an inhibition of the increase in the dynamic friction coefficient, even when executed as a thick coating on a substrate.

Description

Curable organopolysiloxane composition and there are the goods of sheet form of the cured layer obtaining from this curable organopolysiloxane composition
Technical field
The present invention relates to a kind of so curable organopolysiloxane composition: in the time being applied on base material with the form of thick coating, can form inhibition and the little dependent cured layer of kinetic friction coefficient to speed of the increase of the kinetic friction coefficient to cured layer peculiarly demonstrating while being better than using with shallow layer form.More specifically, the present invention relates to a kind of easy-to-handle curable organopolysiloxane composition, it can form cured layer on the surface of base material, non-stick property (releasability) to pressure-sensitive adhesive and viscous substance excellence can be provided, and the cured layer of level and smooth (smooth slipperiness) can be provided.A kind of goods of the sheet form with the cured layer providing by curing this composition are provided, and relate to particularly a kind of laminate of the goods that comprise this form and relate to a kind of surface protective plate.The present invention relates to a kind of a kind of method and method of preparing surface protective plate of the goods of preparing sheet form in addition.
Background technology
By forming cured layer by organopolysiloxane composition on the surface in base material (for example,, as various types of paper, laminated paper, synthetic film, tinsel etc.), to give the method for the non-stick property to pressure-sensitive adhesive or viscous substance be known.Conventionally form curing anti-stick coating with addition reaction-curable organopolysiloxane composition in this case, this addition reaction-curable organopolysiloxane composition experiences the addition reaction (for example, referring to references 1) between organopolysiloxane and the organic hydrogen polysiloxanes of unsaturated alkyl official energy under the existence of hydrosilylation reaction catalyst.Consider based on safety and environmental factors, in the application of broad range, need the organopolysiloxane composition of the curing anti-stick coating of solvent-free formation in recent years.
But, the organopolysiloxane composition of the curing anti-stick coating of existing solvent-free formation adopts the low viscous organopolysiloxane basic components with about 50cs to 1000cs, and do not contain full-bodied organopolysiloxane, although therefore this composition provide excellent can coating, but the curing coating obtaining shows the smoothness of going on business, result shortcoming is that its application is restricted.In order to address this problem, by the organopolysiloxane of high viscosity, low reactivity is added to, in the composition that forms curing coating, to provide composition be known (referring to references 2-4).In addition, the inventor has proposed the organopolysiloxane composition of the curing anti-stick coating of a kind of solvent-free formation, the viscosity of 20mPas to 300mPas when this organopolysiloxane composition has 25 ℃, and contain (A) have the phenyl of silicon bonding alkenyl functional organopolysiloxane and (B) have at least 100, the organopolysiloxane (referring to references 5) of 000mPas viscosity.
On the other hand, the known organopolysiloxane that contains senior thiazolinyl (for example hexenyl) can be used as the basic components of addition reaction-curing organopolysiloxane composition, and can improve for example low-temperature curing characteristic and the anti-adhesion performance to pressure-sensitive adhesive and viscous substance (referring to references 6 to 9).In addition, references 10 discloses a kind of curable coating composition of organopolysiloxane glue of the senior alkenyl functional that contains 0.1 to 20 % by weight, and has instructed and introduced this glue and provide fast setting to become to have the composition of coating of the non-stick property of low-friction coefficient and stable for extended periods of time.
But, the unexposed following curable organopolysiloxane composition of this reference: make the low viscous organopolysiloxane of the senior thiazolinyl content with 1.0 to 5.0 quality % scopes as its basic components, and only contain in addition at molecule chain end and there is the highly viscous organopolysiloxanes of vinyl and be organopolysiloxane glue especially.In addition, this reference does not comprise the description being used in combination or the suggestion of two or more low viscosity organopolysiloxanes of high-stage ethylene base content such as having different range.
[references 1] JP47-32072A
[references 2] JP61-159480A
[references 3] JP2006-206884A
[references 4] JP2008-169322A
[references 5] WO2006/070947
[references 6] JP02-145650A
[references 7] JP04-020570A
[references 8] JP05-171047A
[references 9] JP06-049413A
[references 10] JP09-507523A
Summary of the invention
Technical problem to be solved
The present invention is implemented, to address the above problem, and provide a kind of easy-to-handle curable organopolysiloxane composition, it can form cured layer on the surface of base material, excellent non-stick property to pressure-sensitive adhesive and viscous substance can be provided, and level and smooth cured layer can be provided.
The invention also discloses the new technical problem that the present invention solves.Can be suitably according to have cured layer sheet form base material should be used for selecting the cured layer that provided by known curable organopolysiloxane composition, and may be necessary not only by being less than 1.0g/m 2shallow layer be applied to and on base material, form cured layer, and in some cases by by 1.0g/m 2to 10.0g/m 2thick coating be applied to and on base material, form cured layer.But find, in the time that the thickness of cured layer increases, the kinetic friction coefficient of cured layer increases, and in the time that the thickness of cured layer increases, the smoothness loss of cured layer.These problems are all quite serious in important application in the adhesion characteristics of cured layer and anti-adhesion characteristic, as the same for the protective membrane of optical display and glass surface.The present invention also finds when form thick cured layer on above-mentioned base material time, especially when with 100mm/ minute or higher while peeling off at a high speed, and the peeling force of peeling off with respect to lower velocity, the trend that peeling force increases is very significant.
Therefore, the invention provides a kind of so curable organopolysiloxane composition: in the time being applied on base material with the form of thick coating, can form inhibition and the little dependent cured layer of kinetic friction coefficient to speed of the increase of the kinetic friction coefficient to cured layer peculiarly demonstrating while being better than using with shallow layer form.The present invention also provides a kind of goods of the sheet form that the cured layer providing by curing this composition is provided, and a kind of laminate of the goods that comprise this form is especially provided and a kind of surface protective plate is provided.The present invention relates to a kind of a kind of method and method of preparing surface protective plate of the goods of preparing sheet form in addition.
The solution of problem
Realize above-mentioned purpose by comprising following curable organopolysiloxane composition:
(A) 100 mass parts there are 25 ℃ time the viscosity of 20mPas to 500mPas and the C of 1.0 to 5.0 quality % scopes 4-12at least one organopolysiloxane of senior thiazolinyl content,
(B) 0.5 to 15 mass parts from glue when thering are 25 ℃ at least 1,000, the scope of the fluid of 000mPas viscosity and there is the C of 0.005 to 0.100 quality % 2-12the organopolysiloxane of thiazolinyl content,
(C) per molecule has the organic hydrogen polysiloxanes of the hydrogen atom (Si-H) of at least two silicon bondings, its amount for make SiH group in component (C) and component (A) and (B) in the value of mol ratio of thiazolinyl be 0.5 to 5, and
(D) platinum-type catalyzer of catalytic amount.
, by realizing below above-mentioned purpose:
" organopolysiloxane composition that [1] is curable, comprising:
(A) 100 mass parts there are 25 ℃ time the viscosity of 20mPas to 500mPas and the C of 1.0 to 5.0 quality % scopes 4-12at least one organopolysiloxane of senior thiazolinyl content,
(B) 0.5 to 15 mass parts from colloidal state when thering are 25 ℃ at least 1,000, the scope of the fluid of 000mPas viscosity and there is the C of 0.005 to 0.100 quality % 2-12the organopolysiloxane of thiazolinyl content,
(C) per molecule has the organic hydrogen polysiloxanes of the hydrogen atom (Si-H) of at least two silicon bondings, its consumption for make SiH group in component (C) and component (A) and (B) in the value of mol ratio of thiazolinyl be 0.5 to 5, and
(D) platinum-type catalyzer of catalytic amount,
[2] according to the curable organopolysiloxane composition of [1], wherein component (A) is the mixture of at least two kinds of organopolysiloxanes, wherein
(A1) there is the C of 0.5 to 2.0 quality % scope 4-12the organopolysiloxane of senior thiazolinyl content, and
(A2) there is the C of 2.5 to 5.0 quality % scopes 4-12the organopolysiloxane of senior thiazolinyl content
Mass ratio with 1/4 to 4/1 mixes.
[3] according to the curable organopolysiloxane composition of [1] or [2], wherein the senior thiazolinyl in component (A) is hexenyl.
[4] according to the curable organopolysiloxane composition of [1], wherein component (B) is the dimethyl polysiloxane by dimethylvinylsiloxy end-blocking at two ends of molecular chain.
[5] according to the curable organopolysiloxane composition of any one in [1] to [4], it is characterized in that, composition is solvent-free, and the viscosity of composition in its entirety 100mPas to 5 while being 25 ℃, 000mPas.
[6] according to the curable organopolysiloxane composition of any one in [1] to [5], it is characterized in that, in the time measuring kinetic friction coefficient with the velocity of displacement of 10mm/ minute according to the P8147 of Japanese Industrial Standards on the cured layer by providing below: with 0.6g/m 2with with 1.6g/m 2curable organopolysiloxane composition is coated on the base material of sheet form, and in each case by within 30 seconds, being cured 130 ℃ of heating; The % of the kinetic friction coefficient calculating by formula below increases (Δ) and is no more than 10%:
The % of kinetic friction coefficient increases (Δ)=[{ (with 1.6g/m 2the kinetic friction coefficient of the cured layer of coating)-(with 0.6g/m 2the kinetic friction coefficient of the cured layer of coating) }/with 0.6g/m 2the kinetic friction coefficient of the cured layer of coating] × 100.
[7] goods of sheet form, cured layer providing according to the curable organopolysiloxane composition of any one in [1] to [6] by thermofixation is provided for it.
[8] according to the goods of the sheet form of [7], it is characterized in that, cured layer is by with 1.0g/m 2to 10.0g/m 2speed will be coated on the goods of sheet form according to the curable organopolysiloxane composition of any one in [1] to [6] and carry out by applying heat the cured layer that curing composition provides.
[9] according to the goods of the sheet form of [7] or [8], wherein base material is polyethylene-laminated paper or plastic film.
[10] surface protective plate, it comprises according to the goods of the sheet form of any one in [7] to [9].
[11] one is prepared according to the method for the goods of the sheet form of [7] or [8], and described method feature is:
Use 1.0g/m 2to 10.0g/m 2the curable organopolysiloxane composition according to any one in [1] to [6] carry out the base material of coated sheets form; And
Be cured to form cured layer by applying heat.
[12] prepare the method for surface protective plate, it is characterized in that
Use 1.0g/m 2to 10.0g/m 2according to the base material of the transparent sheet form of the curable organopolysiloxane composition coating essence of any one in [1] to [6]; And
Be cured to form cured layer by applying heat.
[13] laminate, it is manufactured by following: will the formation of pressure-sensitive adhesive layer ground adhesive sheet (SA) providing at least one side of goods of sheet form is provided be applied to the base material (S1) of sheet form, the goods that the base material (S1) of sheet form comprises a kind of form, the goods of this sheet form at least have the cured layer providing according to the curable organopolysiloxane composition of any one in [1] to [6] by thermofixation in one side at it, wherein apply formation of pressure-sensitive adhesive layer is contacted with above-mentioned cured layer.
[14] laminate, it is manufactured by following: the base material (S1) that the residual plate (SR) that the adherent layer providing at least one side of base material of sheet form is provided is applied to sheet form, on the base material that the base material (S1) of sheet form comprises a kind of form, the base material of this sheet form at least has the cured layer providing according to the curable organopolysiloxane composition of any one in [1] to [6] by thermofixation in one side at it, wherein applies adherent layer is contacted with above-mentioned cured layer.”
The beneficial effect of the invention
Curable organopolysiloxane composition according to the present invention, in the time being applied on base material with the form of thick coating, can form the cured layer of the little speed dependence of inhibition that the kinetic friction coefficient to cured layer that peculiarly demonstrates while being better than using with shallow layer form increases and kinetic friction coefficient.This cured layer demonstrates the excellent non-stick property to pressure-sensitive adhesive and viscous substance and demonstrates smoothness.A kind of goods of the sheet form with the cured layer providing by curing said composition are also provided in the present invention, and wherein this cured layer demonstrates above-mentioned technique effect.The present invention provides a kind of laminate and surface protective plate of the goods that comprise this sheet form especially, and a kind of method and a kind of method of preparing this surface protective plate of the goods of preparing this sheet form are also provided.
Implement optimal mode of the present invention
The viscosity of 20mPas to 500mPas and the C of 1.0 to 5.0 quality % scopes when curable organopolysiloxane composition of the present invention peculiarly comprises (A) and has 25 ℃ 4-12at least one organopolysiloxane of senior thiazolinyl content, (B) from glue when thering are 25 ℃ at least 1,000, the scope of the fluid of 000mPas viscosity and there is the C of 0.005 to 0.100 quality % 2-12the organopolysiloxane of thiazolinyl content, (C) per molecule has the organic hydrogen polysiloxanes of the hydrogen atom (Si-H) of at least two silicon bondings, and (D) platinum-type catalyzer.Be described in greater detail below every kind of goods and laminate that forms component and use the sheet form of said composition in this curable organopolysiloxane composition.
Component (A) is the C of viscosity and 1.0 to the 5.0 quality % scopes of 20mPas to 500mPas while having 25 ℃ 4-12at least one organopolysiloxane of senior thiazolinyl content.Component (A) has the senior thiazolinyl of low viscosity and high-content, for example hexenyl, and use this component (A) can on the surface of base material, form the cured layer with high crosslink density as basic components, and also effectively promote component (B) to ooze out, component (B) has the thiazolinyl content of 0.005 to 0.100 quality % and therefore from the inside of cured layer to the low reactivity on surface.Therefore, even when curable organopolysiloxane composition of the present invention is applied on surface with the form of thick coating, also suppress or suppressed speed dependence and the compacting of the kinetic friction coefficient changing with cured layer thickness or suppressed the increase of the kinetic friction coefficient changing with cured layer thickness, and demonstrating excellent non-stick property and the smoothness to pressure-sensitive adhesive and viscous substance.In the case of the appointment lower limit lower than senior thiazolinyl content, in the time that obtained cured layer becomes thicker, kinetic friction coefficient increases, and in the time that cured layer becomes thicker, the kinetic friction coefficient of cured layer also demonstrates speed dependence, and therefore object of the present invention can not realize.On the other hand, when prescribing a time limit in the appointment higher than senior thiazolinyl content, constituents for suppressing (B) is exuded to cured layer surface, and the non-stick property of possible loss excellence and the technique effect of smoothness.
Consider from the angle of technique effect of the present invention, component (A) preferably has the C of 1.5 to 4.0 quality % scopes 4-12senior thiazolinyl content; C in component (A) 4-12particularly preferably hexenyl of senior thiazolinyl; And component (A) is preferably at two ends of molecular chain and in side chain position, has the organopolysiloxane of hexenyl, as shown in by structural formula given below.In addition, from compacting or suppress to consider with the speed dependence of the kinetic friction coefficient of cured layer variation in thickness with the angle of the technique effect of the change of the kinetic friction coefficient of cured layer variation in thickness, component (A) is compatibly the mixture of at least two kinds of organopolysiloxanes, and wherein (A1) has the C of 0.5 to 2.0 quality % scope 4-12the organopolysiloxane of senior thiazolinyl content and the C (A2) with 2.5 to 5.0 quality % scopes 4-12the organopolysiloxane of senior thiazolinyl content mixes with 1/4 to 4/1 mass ratio, and more suitably mixes with 1/2 to 2/1 mass ratio.The senior thiazolinyl content of this mixture is preferably in the scope of 1.5 to 4.0 quality %, and particularly preferably in the scope of 2.0 to 3.5 quality %.
[formula 1]
In above formula, respectively positive number naturally of m and n; M is to provide the hexenyl-(CH of 1.0 to 5.0 quality % scopes in per molecule 2) 4cH=CH 2the number of content; And the number of 20mPas to 500mPas range of viscosities when m+n is to provide 25 ℃.
In addition, when high-speed measurement in the situation that compacting or the technique effect that suppresses the increase (speed dependence) of the kinetic friction coefficient on base material-cured layer surface be particularly important time, component (A) is particularly preferably to have 2.0 to 5.0 quality % scopes and more preferably at least one organopolysiloxane of the senior thiazolinyl content of 2.0 to 3.5 quality % scopes or have 2.0 to 5.0 quality % scopes and more preferably at the mixture of at least two kinds of organopolysiloxanes of the senior thiazolinyl content of 2.0 to 3.5 quality % scopes.
Component (B) is the additive of giving the surface smoothness of cured layer, and more specifically-by being effectively exuded to by using high crosslink density that component (A) realizes that the surface of the cured layer that provides-give the kinetic friction coefficient of surface the best of cured layer is provided, and excellent non-stick property and smoothness to pressure-sensitive adhesive and viscous substance are provided.
Component (B) be from colloidal state when thering are 25 ℃ at least 1,000, the scope of the fluid of 000mPas viscosity and there is the C of 0.005 to 0.100 quality % scope 2-12the organopolysiloxane of thiazolinyl content.The organic group of non-thiazolinyl silicon bonding can be exemplified as alkyl, for example methyl, ethyl, propyl group etc.; Aryl, for example phenyl etc.; Haloalkyl, for example 3,3,3-trifluoro propyl, nine fluorine hexyls etc.; And silanol.
In order to realize object of the present invention, component (B) preferably has 0.005 to 0.100 quality % and the preferred C of 0.010 to 0.050 quality % scope 2-12the organopolysiloxane of the low reactivity of thiazolinyl content, and at least 90% and the more preferably preferably non-reacted alkyl or aryl of organic group of all non-thiazolinyl silicon bondings.May produce such as silicone to the increase of surface transport and the problem of low after-tack lower than the thiazolinyl content in the component (B) of aforementioned lower limit.In the time of the thiazolinyl content higher than the aforementioned upper limit, component (B) is incorporated in cured layer by addition reaction, and the effect of giving cured layer surface smoothness may be not satisfied.
About the characteristic of component (B), it can be changed to while having 25 ℃ at least 1,000 from colloidal state, the fluid of 000mPas viscosity, and in the time that component (B) is fluid, viscosity is preferably at least 10,000,000mPas simultaneously.In the time that B component presents the form of glue, its plasticity is preferably in the scope of 0.5mm to 10.0mm, and particularly preferably in the scope of 0.9mm to 3.0mm.This plasticity is the plasticity of measuring based on the method plastometer of describing in Japanese Industrial Standards 6249, and is the value of measuring when 4.2g spherical sample continues 3 minutes when 1kfg load being applied at 25 ℃.
Component (B) can specifically be exemplified as polydimethylsiloxane, dimethyl siloxane phenyl methyl silicone copolymers and dimethyl siloxane diphenyl siloxane multipolymer, in each case these materials be at molecule chain end by the identical or different group end capping of the group forming below selecting freely: alkyl, thiazolinyl, aryl, haloalkyl and the silanol of silicon bonding.Component (B) be particularly preferably at molecule chain end by the dimethyl polysiloxane of straight or branched that is selected from following identical or different group end capping: trimethylsiloxy, silanol and vinyl.Also can use the mixture of the polydimethylsiloxane with different polymerization degree.
Component (B) is the most compatibly the polydimethylsiloxane by dimethylvinylsiloxy end-blocking at two ends of molecular chain, and it is particularly preferred wherein using polydimethylsiloxane glue.
The component (B) of component (A) from 0.5 to 15 mass parts that curable organopolysiloxane composition of the present invention contains every 100 mass parts, and particularly preferably contain the component (B) of component (A) 1.0 to 5.0 mass parts of every 100 mass parts.Prescribe a time limit when component (B) content is less than the lower of appointment, cured layer surface has not satisfied smoothness.Prescribe a time limit when exceeding the upper of appointment, the viscosity of organopolysiloxane composition becomes too high, and this can for example be coated with actual procedure, prepare etc. and throw into question, especially in the situation that using with solvent-free form.
Component (C) is the organic hydrogen polysiloxanes of the per molecule hydrogen atom (Si-H) with at least two silicon bondings, and is linking agent.Component (C) preferably per molecule has the hydrogen atom of at least three silicon bondings, and their bonding position is not particularly limited.The hydrogen atom content of silicon bonding is preferably 0.1 to the 2.0 quality % with respect to overall organopolysiloxane composition, and more preferably with respect to 0.5 to 1.8 quality % of overall organopolysiloxane composition.Except hydrogen atom, the organic group that is bonded to silicon in component (C) can be exemplified as alkyl, for example methyl, ethyl, propyl group, butyl and octyl group, and wherein methyl is preferred.The molecular structure of component (C) can be exemplified as the ring-type of straight chain, side chain and branching.
The viscosity of component (C) is 1mPas to 1 in the time of 25 ℃, 000mPas, and be preferably 5mPas to 500mPas.Reason for this is as follows: when in the time that 25 ℃ of viscosity are less than 1mPas, component (C) is easy to volatilize from organopolysiloxane composition; When in the time that 25 ℃ of viscosity exceed 1,000mPas, in organopolysiloxane composition, need long set time.Component (C) can specifically be exemplified as two ends by the dimethylsiloxane methylhydrogensiloxacopolymer copolymer of trimethylsiloxy end-blocking, at two ends by the dimethylsiloxane methylhydrogensiloxacopolymer copolymer of dimethyl hydrogen siloxy-end-blocking, methylhydrogenpolysi,oxane, ring-type methylhydrogenpolysi,oxane and cyclic methylhydrogensiloxafraction dimethylsiloxane copolymer at two ends by trimethylsiloxy end-blocking.Two or more organic hydrogen polysiloxanes component (C) that is used as capable of being combined.
A kind of organic hydrogen polysiloxanes that component (C) is more preferably represented by general formula (2) below or two or more organic hydrogen polysiloxanes that represented by general formula (2).Cured layer is that the addition reaction (hydrosilylation reactions) of being undertaken by the thiazolinyl of the silicon bonding by component (A) and (B) forms.
[formula 2]
R in formula 1be that replace or unsubstituted monovalent saturated hydrocarbon group, and be exemplified as group as hereinbefore.P is positive integer; Q is more than or equal to 2 integer; And p and q meet and are related to 10≤(p+q)≤200.Can volatilize in limited time when (p+q) is less than the lower of appointment, and may not obtain gratifying solidifying, this depends on condition of cure.Prescribe a time limit when exceeding the upper of appointment, along with bathing the increase of storage period, gel can occur and generate.In addition, p and q preferably meet and are related to 0.3≤q/ (p+q)≤1.Prescribing a time limit when q/ (p+q) is less than the lower of appointment, may be not satisfied according to solidifying of curable organopolysiloxane composition of the present invention.
Component (C) so that the SiH group in component (C) and component (A) and (B) in the value of mol ratio of thiazolinyl be 0.5 to 5 and preferably 1 to 5 amount be impregnated in.Prescribe a time limit when this mol ratio is less than the lower of appointment, curability declines; Prescribe a time limit when exceeding the upper of appointment, large antistripping occurs and may not obtain actual non-stick property.
Component (D) is platinum-type catalyzer, and is the catalyzer of the addition reaction (hydrosilylation reactions) between the thiazolinyl of silicon bonding and the hydrogen of silicon bonding existing in quickening system.The specific examples of preferred platinum-type catalyzer is Platinic chloride, the Platinic chloride of alcohol modification, the alkene complex of Platinic chloride, the complex compound of Platinic chloride and ketone, the complex compound of vinylsiloxane and Platinic chloride, Tetrachloroplatinum, the meticulous platinum separating, load on for example, solid platinum on carrier (aluminum oxide or silicon-dioxide), platinum black, the alkene complex of platinum, the alkenyl siloxane complex compound of platinum, the carbonylcomplex of platinum and comprise thermoplasticity organic resin (for example methyl-methacrylate resin combining as platinum-type catalyzer listed above, polycarbonate resin, polystyrene resin, silicone resin etc.) platinum-type catalyzer of powder.Particularly preferably use complex compound and platinum/alkenyl siloxane complex compound of complex compound, Platinic chloride and the tetramethyl-tetrem thiazolinyl cyclotetrasiloxane of Platinic chloride and divinyl tetramethyl disiloxane, for example platinum/divinyl tetramethyl disiloxane complex compound, platinum/tetramethyl-tetrem thiazolinyl cyclotetrasiloxane complex compound etc.
Add component (D) with catalytic amount, and conventionally with 1ppm to 1,000ppm, and preferably add in the scope of 5ppm to 500ppm, in each case, this amount is the amount with respect to platinum in the component (D) of the total mass of curable organopolysiloxane composition of the present invention.
Except said components, curable organopolysiloxane composition of the present invention preferably also mixes (E) hydrosilylation reactions inhibitor, to suppress gelation at ambient temperature and to solidify, thereby and improve stability in storage at ambient temperature, the curability under the applying of heat is provided simultaneously.This hydrosilylation reactions inhibitor can be exemplified as alkine compounds, alkene-alkine compounds, organic nitrogen compound, organo phosphorous compounds and oxime compound.Specific examples is alkynol, for example 2-methyl-3-butyne-2-alcohol, 3,5-dimethyl-1-hexin-3-alcohol, methylpentynol, 2-phenyl-3-butyne-2-alcohol, 1-acetylene-1-hexalin (ETCH) etc.; 3-methyl-3-trimethylsiloxy-ethyl acetylene; 3-methyl-3-trimethylsiloxy-1-pentyne; 3,5-dimethyl-3-trimethylsiloxy-1-hexin; Alkene-alkine compounds, for example 3-methyl-pirylene, 3,5-dimethyl-3-hexene-1-alkynes etc.; 1-ethynyl-1-trimethylsiloxy hexanaphthene; Two (2,2-dimethyl-2-butyne oxygen base) dimethylsilane; And alkenyl siloxane, for example 1,3,5,7-tetramethyl--1,3,5,7-tetrem thiazolinyl cyclotetrasiloxane, 1,3,5,7-tetramethyl--1,3,5,7-, tetra-hexenyl cyclotetrasiloxanes etc.The incorporation of this hydrosilylation reactions inhibitor (E) is conventionally in the scope of component (A) 0.001 to 5 mass parts of every 100 mass parts, but can be optionally selects according to the amount of the hydrogen atom of the silicon bonding in amount and the component (C) of the senior thiazolinyl in the performance of the type of component (E), the hydride siloxane catalysts that mixes and consumption, component (A), desired working life and Working environment.
Composition of the present invention comprises component (A), (B), (C) and (D) and optional (E), and is well suited for especially as solvent-free curable organopolysiloxane composition.Organopolysiloxane resins containing thiazolinyl also can be impregnated in composition of the present invention, to reduce the peeling force to pressure-sensitive adhesive and viscous substance demonstration by cured layer.Also can mix thickening material, for example particulate silicon-dioxide etc., to improve the viscosity of coating baths.Especially, in the time that composition of the present invention uses with solvent-free form, on the base material based in sheet form can coating Consideration, the viscosity of composition in its entirety in the time of 25 ℃ is preferably at 50mPa s to 10, the scope of 000mPa s, and more preferably from 100mPas to 5,000mPa s.
On the other hand, when especially realizing thin coating and being target, composition of the present invention can be dispersed in known organic solvent and use.Organic solvent can be exemplified as aromatic hydrocarbon solvent, for example toluene, dimethylbenzene etc.; Aliphatic hydrocarbon solvent, for example hexane, octane, isoparaffin etc.; Ketone solvent, routine acetone, methyl ethyl ketone, methyl iso-butyl ketone (MIBK) etc.; Ester solvent, for example ethyl acetate, isobutyl acetate etc.; Ether solvents, for example Di Iso Propyl Ether, Isosorbide-5-Nitrae-dioxs etc.; There is the cyclic polysiloxanes of 3 to 6 the polymerization degree, for example hexamethyl cyclotrisiloxane, octamethylcyclotetrasiloxane, decamethylcyclopentaandoxane etc.; Halohydrocarbon, for example trieline, tetrachloroethylene, trifluoromethylbenzene, 1, two (trifluoromethyl) benzene of 3-, methyl penta fluoro benzene etc.For example, in the case of the upper application of thin coating of base material (polyolefine) of sheet form with low heat resistant, based on curability and swelling event, what preferably use is ether solvents.Should note, the in the situation that of shallow layer, of the present invention may be not satisfied about following technique effect: thick coating is applied to the inhibition that while being better than using with shallow layer on base material, kinetic friction coefficient increased and the little dependency of the kinetic friction coefficient in the situation that thick coating is on base material to speed.
Optional component except aforementioned component can be added to according in curable organopolysiloxane composition of the present invention.Can add known additive, as the adhesion promotor that comprises alkoxysilane compound containing trialkylsilyl group in molecular structure, for example 3-glycidoxypropyltrimewasxysilane, 3-methacryloxypropyl trimethoxy silane etc.; Oxidation retarder, for example phenol type, quinoid, amine type, phosphorus type, phosphite type, sulphur type, thioether-type etc.; Photostabilizer, for example triazole type, benzophenone type etc.; Fire retardant, for example phosphate type, halogen-type, phosphorus type, antimony type etc.; The static inhibitor that one or more comprise cationic surfactant, aniorfic surfactant, nonionogenic tenside etc.; Thermo-stabilizer; Dyestuff; Pigment etc.
Especially; when the goods of the sheet form with the cured layer being provided by composition according to the present invention are used as surface protective plate; with protection optics (for example; liquid crystal board, plasma display, polarising sheet, phase retardation plate etc.) surface or electronic/electric (for example; printed circuit board (PCB), unicircuit, transistor, electrical condenser etc.) surperficial time, preferably add static inhibitor.
Can be by simply component (A) to (D), if desired component (E) and any other optional component being mixed to and evenly preparing composition of the present invention.Order of addition to component is not particularly limited; But, will can not use immediately time, preferably component (A) mixture (B) and (C) is separated to storage with component (D) after composition is mixing, then before using, mix immediately them.In the case of comprising component (A) to (D) and also comprising the composition of component (E), the incorporation of component (E) is preferably conditioned, do not experience at ambient temperature crosslinkedly to provide, but applying under heat the crosslinked and curing composition of experience.
By the organopolysiloxane composition of foregoing curable of the present invention being coated on equably on the base material of sheet form and heating, can prepare the goods of the sheet form in its surface with the excellent adhering cured layer that demonstrates the transparency of excellent smoothness, excellence and the base material to sheet form under the condition that is enough to cause hydrosilylation reactions (regulating component (A) and (C) crosslinked).The cured layer providing by curing composition of the present invention also has other advantages, and it has excellent flexibility and excellent ventilation property, even and in the time being applied on the target material without flat shape, present little bubble inclusion.Therefore, it is very suitable for for the adhesivity of the anti-adhesion performance of cured layer and its object to need protection is all crucial application, as in the situation of the protective membrane of optical display and glass surface.
Especially, curable organopolysiloxane composition of the present invention can provide the goods of sheet form, for the goods of this sheet form, by the application rate with different (and particularly with 0.6g/m 2the coating of (=thin) and 1.6g/m 2the coating of (=thick)) base material that composition is applied to sheet form is (for example, polyethylene-laminated paper or polyethylene terephthalate film) upper and increase (Δ) and be no more than 10% by apply the % of kinetic friction coefficient of the cured layer that heat provides for 30 seconds at 130 ℃ in each case, and curable organopolysiloxane composition of the present invention can form the variation with respect to application rate, the increase of kinetic friction coefficient is the cured layer of suppressed or compacting conventionally.In addition, the goods that the present invention can provide the wherein increase of the kinetic friction coefficient of aforementioned definitions to be no more than 5% sheet form, and the goods of-15% to 3% the sheet form of increasing to of kinetic friction coefficient even can be provided.
" kinetic friction coefficient of cured layer " in the % of the kinetic friction coefficient " increase (Δ) " is the value in its surface with the kinetic friction coefficient between the front and back of base material of the sheet form of cured layer, this value is to pass through to use surveying instrument (for example Tensilon tension testing machine) and 1000g load based on the P8147 of Japanese Industrial Standards after this cured layer forms one day, the velocity of displacement of 10mm/ minute, the temperature of 23 ℃ and have the environment of 65% humidity, measure kinetic friction coefficient determined.
When comprising having with 0.6g/m by preceding method 2the sample of base material of sheet form of the cured layer that obtains of application rate on and comprise having with 1.6g/m 2the sample of base material of sheet form of the cured layer that obtains of application rate on while measuring kinetic friction coefficient, it is the value that uses formula below to measure that the % of kinetic friction coefficient increases (Δ), and is that the percentage ratio of the kinetic friction coefficient of cured layer increases,
Δ (%)={ (with 1.6g/m 2the kinetic friction coefficient-with 0.6g/m of the cured layer of coating 2the kinetic friction coefficient of the cured layer of coating)/with 0.6g/m 2the kinetic friction coefficient of the cured layer of coating } × 100.
Can use generally flat and have and be suitable for the width of application-specific and the base material of thickness, for example, band, film etc., and be not restricted to especially the base material of sheet form, and specific examples is the base material of the compound sheet form prepared of paper, synthetic resin film, fabric and textiles, synthon, tinsel (for example aluminium foil, Copper Foil etc.), glass fibre and the base material by the multiple aforesaid forms of lamination.
Synthetic resin film can be exemplified as for example synthetic resin film of polyester, tetrafluoroethylene, polyimide, polyphenylene sulfide, polymeric amide, polycarbonate, polystyrene, polypropylene, polyethylene, polyvinyl chloride, polyethylene terephthalate etc.Because cured layer of the present invention is in fact transparent, the base material of transparent in fact sheet form of protective membrane select the base material of the sheet form of the high-clarity being mainly made up of these synthetic resin films to demonstrate excellent transparency as to(for) acquisition is useful.
Paper can be exemplified as Japan paper, synthetic paper, polyolefine-laminated paper, and be polyethylene-laminated paper especially, the paper of fiber board and clay coated.
Above the thickness of the base material of the sheet form of citation is not particularly limited as an example, but conventionally at approximately 5 μ m to 300 μ m.In order to improve the adhesivity between base material and the cured layer of sheet form, can use the support membrane that has experienced prime treatment, corona treatment, etch processes or Cement Composite Treated by Plasma.In this respect useful paint base composition can be exemplified as the polydiorganosiloxane that is included in end and there is SiOH group, containing the polysiloxane of SiH group and/or containing the polysiloxane of alkoxyl group and polycondensation-type silicone paint base composition of polycondensation catalyst, and can be exemplified as and comprise for example, containing the poly-diorganopolysiloxanecompositions of thiazolinyl (vinyl), containing the silicone paint base composition of the polysiloxane of SiH group and the addition type of addition-catalysts.
The relative face of the base material of the sheet form of being made up of cured layer can experience surface treatment, for example anti scuffing processing, antifouling processing, anti-finger prints processing, antiglare processing, anti-reflex treated, antistatic treatment etc.These surface treatments are carried out after can be on the base material that curable organopolysiloxane composition of the present invention is coated on to sheet form, or can be after carrying out surface treatment set of applications compound.
Anti scuffing processing (hard coat processing) can be exemplified as by for example processing of acrylate type, silicone type, propylene oxide type, inorganic type or the hard coating agent of organic/inorganic mixed type.
Antifouling processing can be exemplified as by for example processing of fluorine type, silicone type, ceramic mould or photochemical catalysis formulation stainproofing agent.
Anti-reflex treated can be exemplified as the wet treatment of coating based on having for example fluorine type or silicone type anti-reflection agent, and can be exemplified as the dry-cure that uses vapour deposition or sputter.Antistatic agent treatment can be exemplified as and use for example processing of the metal mold static inhibitor of surfactant type, silicone type, organic boron type, conductive polymer type, metal oxide type or vapour deposition.
Be generally suitable for solidifying according to curable organopolysiloxane composition of the present invention at the base material of sheet form from the temperature of 50 ℃ to 200 ℃, but can use the temperature higher than 200 ℃, as long as the base material of sheet form has good thermotolerance.Heating means are not particularly limited, and can be for example by heating in convection oven, heat through long process furnace and with the radiation heating of infrared lamp or halogen lamp.Also can be cured by combining hot applying and be exposed to uv-radiation.In the time that component (D) is platinum/alkenyl siloxane complex compound catalyst, even in the time that the amount of the platinum of the 80ppm to 200ppm with respect to total composition is mixed this catalyzer, 1 second to 40 seconds at short notice, at 100 ℃ to 150 ℃, can be easy to obtain the excellent adhering cured layer that demonstrates the transparency of excellent smoothness, excellence and the base material to sheet form.
On the other hand, at the base material of sheet form with low heat resistant for example polyolefine etc., after curable organopolysiloxane composition of the present invention is applied to the base material of for example polyolefinic form, curable organopolysiloxane composition of the present invention is preferably at 50 ℃ to 100 ℃ and more preferably heated under the low temperature of 50 ℃ to 80 ℃.In this case, at 30 seconds to several minutes, for example, under the set time of 1 minute to 10 minutes, can realize consistent solidifying.
About the lip-deep method that curable organopolysiloxane composition of the present invention is coated on to the base material of sheet form, can use following methods and unrestricted: submergence, spraying, intaglio plate coating, offset printing coating, the coating of offset printing intaglio plate, the roller coat, reverse roll coating, the airblade coating that use for example transfer-type roll-coater, the curtain-type coating that uses for example curtain coater, comma coating, the coating of Mayer bar type and be used to form other known methods of cured layer.
Application rate is arranged to consistent with practical application, but conventionally uses and provide 0.1g/m on the base material of sheet form 2to 200.0g/m 2amount.When target is the shallow layer of using curable organopolysiloxane of the present invention while being adherent layer, application rate may be selected to be 0.1g/m 2to 1.0g/m 2, and when target be that for example, when (protective membrane service) uses thick coating in needs non-stick property and adhering application in the situation that application rate may be selected to be 1.0g/m 2to 10.0g/m 2.Especially, especially due to the excellent smoothness in the case of using with the form of thick coating, curable organopolysiloxane of the present invention is preferably with 1.0g/m 2to 10.0g/m 2, and particularly preferably with 1.0g/m 2to 5.0g/m 2coating.
The cured layer being provided by curable organopolysiloxane composition of the present invention has the effect as curing adherent layer.On the other hand, the using of the thick coating of said composition has advantages of also can use the binder layer of this cured layer as microviscosity, and the binder layer of this microviscosity also has and the same excellent non-stick property of non-stick property the shallow layer in the situation that.Be described below the application of the composition of the present invention that utilizes these characteristics.
Composition of the present invention is used to form the cured layer that demonstrates excellent surface smoothness and the excellent non-stick property to pressure-sensitive adhesive and viscous substance.Composition of the present invention can be very suitable for especially as curing antiadhesion barrier forming agent, for example printing paper (process paper), asphalt packages paper and various plastic film.
Especially, due to its excellent non-stick property to another kind of pressure-sensitive adhesive or viscous layer, the cured layer being provided by composition of the present invention can be used as the adherent layer of the printing paper of the laminate that comprises pressure-sensitive adhesive or viscous layer, as the adherent layer of parcel or the paper of packaged pressure sensitive tackiness agent or viscous substance, as the adherent layer of the laminate such as Pressuresensitive Tape, Pressuresensitive Label etc.Particularly, the curable organopolysiloxane composition of the application of the invention, can obtain laminate, it is by following manufacture: the base material (S1) that the adhesive sheet (SA) that the formation of pressure-sensitive adhesive layer (or bonding coat) being provided at least one side of the base material in sheet form is provided is applied to sheet form, the base material that the base material (S1) of sheet form comprises a kind of form, the base material of this sheet form at least has the cured layer (separating layer or adherent layer) providing by thermofixation curable organopolysiloxane composition of the present invention in one side at it, wherein apply formation of pressure-sensitive adhesive layer is contacted with above-mentioned cured layer.
Represent the pressure-sensitive adhesive of four corner and tackiness agent etc. for the pressure-sensitive adhesive of laminate mentioned above or viscous substance, and can be exemplified as the pressure-sensitive adhesive based on acrylate resin, the pressure-sensitive adhesive based on rubber, the pressure-sensitive adhesive based on silicone, the tackiness agent based on acrylate resin, based on elastomeric tackiness agent, tackiness agent, the tackiness agent based on epoxy resin and the tackiness agent based on urethane based on silicone.Other examples are pitch, viscous food product, for example Herba Gonostegiae Hirtae (rice cake) and paste, glue, starch and bird lime.
On the other hand; by using the thick coating of composition of the present invention; the cured layer that said composition provides also can be used as also having the bonding coat with the microviscosity of the same excellent anti-adhesion characteristic of anti-adhesion characteristic the shallow layer in the situation that on the other hand; and it is especially very useful, because it can be used as screening glass, can repeat the bonding coat of antiseized adhesive sheet etc.Once such bonding coat is adhered to target compound, just maintains adhesion steady in a long-term and that do not slide or peel off at binding site, and there is peelable ability excellent after long-term adhesion.In addition, be easy to again apply, and in the case of the life-time service of screening glass, cured layer has advantages of resistance to deformation, bleaches, produces after-tack etc.
The screening glass with the cured layer being provided by composition of the present invention maybe can repeat antiseized adhesive sheet and can be used for following application: during transportation, processing or curing member; it is adhered to the surface of member (for example, the steel disc of tinsel or plate, the tinsel being sprayed paint or plate, aluminium sash, resin sheet or plate, ornamental steel disc or plate, polyvinyl chloride-lamination or plate, sheet glass or plate etc.) and the surface of protection member.In addition; it can be very suitable for the screening glass as in following process: in the process for the production of various types of LCD panel (being also known as monitor and indicating meter), in the process of the channel of allocation of polarising sheet, in the process of the Matter production and allocation channel of for example, resin component element for various types of instruments and machine (automobile), for the process of food product pack, and etc.
Similarly, because the screening glass that is provided with the bonding coat that comprises cured layer of the present invention is easy to repeated application, this screening glass is suitable for as following various types of screening glass.Under production, distribution and the multiple environment between the usage period of these indicating meters, can use screening glass of the present invention, realize and prevent surface damage, prevent surface contamination, prevent fingerprint, prevent static, avoid reflection, obtain the target of antistripping effect etc.
Use curable organopolysiloxane composition of the present invention, can obtain particularly by the base material (S1) that the residual plate (SR) that the adherent layer that provides at least one side of base material of sheet form is provided is applied to sheet form the laminate that forms this surface protective plate, the base material that the base material (S1) of sheet form comprises a kind of form, the base material of this sheet form at least has the cured layer (adherent layer and bonding coat) providing by thermofixation curable organopolysiloxane composition of the present invention in one side at it, wherein apply adherent layer is contacted with above-mentioned cured layer.
Embodiment
Provide below embodiment and comparing embodiment, to describe particularly the present invention; But, the invention is not restricted to the following examples.In the following embodiments, part is mass parts in all cases; Hex represents hexenyl; And Me represents methyl.Viscosity and plasticity are the values of measuring at 25 ℃.By using following method to measure kinetic friction coefficient, evaluate the smoothness of the cured layer being provided by curable organopolysiloxane composition.
[formation of cured layer]
Use the printing trier consistent with application rate (from Mei Seisakusho Co., the RI-2 of Ltd.), to provide by siloxanes 0.6g/m 2, 1.0g/m 2or 1.6g/m 2amount curable organopolysiloxane composition is coated on the surface of base material.After coating, in convection oven at 130 ℃ heated substrate 30 seconds, to form cured layer on substrate surface.
[measuring the kinetic friction coefficient (for comparative examples 1 and 3, practical embodiments 2, comparing embodiment 1 to 3) of polyethylene-laminated paper]
Use the polyethylene-laminated paper in its surface with the cured layer obtaining by aforesaid method, in the curing measure sample of preparing one day after, wherein after polyethylene-laminated paper untreated, (paper base material side) pasting cured layer (surface, curing layer of silicone), and use Tensilon tension testing machine (trade mark: Tensilon RTC-1210, from Orientec Co., Ltd.) measure and there is front/rear kinetic friction coefficient according to the polyethylene-laminated paper of the cured layer of above-mentioned acquisition.Use condition below to measure under each independent velocity of displacement: load: 1000g; The velocity of displacement of 10mm/ minute, 30mm/ minute or 100mm/ minute; The surrounding environment of 23 ℃ and 65% humidity.
[measuring the kinetic friction coefficient (for comparative examples 4 and 6, practical embodiments 5) of polyethylene terephthalate film]
Use and there is in its surface polyethylene terephthalate (PET) film of the cured layer obtaining by aforesaid method (thickness=50 μ m), in the curing measure sample of preparing one day after, wherein after polyethylene terephthalate film untreated, (PET base material side) pasting cured layer (surface, curing layer of silicone), and use Tensilon tension testing machine (trade mark: Tensilon RTC-1210, from Orientec Co., Ltd.) measure have according to the front/rear kinetic friction coefficient of the PET film of the cured layer of above-mentioned acquisition.Use condition below to measure under each independent velocity of displacement: load: 1000g; The velocity of displacement of 10mm/ minute, 30mm/ minute or 100mm/ minute; The surrounding environment of 23 ℃ and 65% humidity.
[% of kinetic friction coefficient increases (Δ)]
There is 0.6g/m by preceding method 2the sample of application rate on and there is 1.6g/m 2on the sample of application rate, measure kinetic friction coefficient (value recording with the velocity of displacement of 10mm), and determine that according to formula below the % of the kinetic friction coefficient of cured layer increases (Δ).Determine with the benchmark value of the velocity of displacement of 100mm/ minute that similarly the percentage ratio of kinetic friction coefficient increases (table 1 and table 3) with 30mm/ minute.
Δ (%)={ (with 1.6g/m 2the kinetic friction coefficient-with 0.6g/m of the cured layer of coating 2the kinetic friction coefficient of the cured layer of coating)/with 0.6g/m 2the kinetic friction coefficient of the cured layer of coating } × 100.
[speed dependence of the kinetic friction coefficient of cured layer: (δ S) %]
On the cured layer of same coated speed, measure kinetic friction coefficient according to preceding method with the velocity of displacement of 10mm/ minute and 100mm/ minute, and use formula below to determine that the % of the kinetic friction coefficient of cured layer changes that (δ s).
δ s (%)={ kinetic friction coefficient of the cured layer of (kinetic friction coefficient of the cured layer of the kinetic friction coefficient of the cured layer of measuring with the velocity of displacement of 100mm/ minute-measure with the velocity of displacement of 10mm/ minute)/measure with the velocity of displacement of 10mm/ minute } × 100.
[comparative examples 1]
By 93.6 parts (A1) at two ends of molecular chain with there is hexenyl in side chain position, the viscosity of 220mPas, there is the polydimethylsiloxane of the hexenyl content of 1.15 quality %, 3.0 parts (B1) has the plasticity of 1.4mm and the dimethyl siloxane glue by ethenyl blocking at molecule chain end, 3.2 parts (C1) has the hydrogen richness of the viscosity of 25mPas and the silicon bonding of 1.6 quality % and the methylhydrogenpolysi,oxane by trimethylsiloxy end-blocking at two ends of molecular chain, and 0.2 part of (E) 1-ethynyl-1-hexalin (ETCH) is mixed to evenly.To provide the addition of platinum amount of 100ppm (D) to be there is to the Platinic chloride 1 of the platinum content of 0.6 quality %, 3-divinyl-1,1-3,3-tetramethyl disiloxane complex compound is blended in obtained mixture, there is the solvent-free curable organopolysiloxane composition of 800mPas viscosity thereby produce, and be appointed as composition 1.Hydrogen atom (Si-) the H/Hex mol ratio of the silicon-bonding in said composition is 1.27.By preceding method with 0.6g/m 2, 1.0g/m 2and 1.6g/m 2application rate obtained organopolysiloxane composition is applied on polyethylene-laminated paper, and solidify, and measure kinetic friction coefficient on the cured layer obtaining at each.Outcome record is in table 1.
[practical embodiments 2]
By 46.8 parts (A1) at two ends of molecular chain with there is hexenyl in side chain position, there is the viscosity of 220mPas, the polydimethylsiloxane of the hexenyl content of 1.15 quality %, 44.5 parts (A2) is at two ends of molecular chain and have hexenyl in side chain position, the polydimethylsiloxane of the hexenyl content of the viscosity of 100mPas and 3.00 quality %, 3.0 parts (B1) has the plasticity of 1.4mm and the dimethyl siloxane glue by ethenyl blocking at molecule chain end, 7.8 part (C1) has the hydrogen atom content of the viscosity of 25mPas and the silicon bonding of 1.6 quality % and is mixed to evenly by methylhydrogenpolysi,oxane and 0.2 part of (E) 1-ethynyl-1-hexalin (ETCH) of trimethylsiloxy end-blocking at two ends of molecular chain.To provide the addition of platinum amount of 100ppm (D) to be there is to the Platinic chloride 1 of the platinum content of 0.6 quality %, 3-divinyl-1,1-3,3-tetramethyl disiloxane complex compound is blended in obtained mixture, there is the solvent-free curable organopolysiloxane composition of 600mPas viscosity thereby produce, and be appointed as composition 2.Hydrogen atom (Si-) the H/Hex mol ratio of the silicon-bonding in said composition is 1.25.By preceding method with 0.6g/m 2, 1.0g/m 2and 1.6g/m 2application rate obtained organopolysiloxane composition is applied on polyethylene-laminated paper, and solidify, and measure kinetic friction coefficient on the cured layer obtaining at each.Outcome record is in table 1.
[comparative examples 3]
By 89.0 parts (A2) at two ends of molecular chain with there is hexenyl in side chain position, there is the polydimethylsiloxane of the viscosity of 100mPas and the hexenyl content of 3.00 quality %, 3.0 parts (B1) has the plasticity of 1.4mm and the dimethyl siloxane glue by ethenyl blocking at molecule chain end, 7.8 part (C1) has the hydrogen atom content of the viscosity of 25mPas and the silicon bonding of 1.6 quality % and is mixed to evenly by methylhydrogenpolysi,oxane and 0.2 part of (E) 1-ethynyl-1-hexalin (ETCH) of trimethylsiloxy end-blocking at two ends of molecular chain.To provide the addition of platinum amount of 100ppm (D) to be there is to the Platinic chloride 1 of the platinum content of 0.6 quality %, 3-divinyl-1,1-3,3-tetramethyl disiloxane complex compound is blended in obtained mixture, there is the solvent-free curable organopolysiloxane composition of 300mPas viscosity thereby produce, and be appointed as composition 3.Hydrogen atom (Si-) the H/Hex mol ratio of the silicon-bonding in said composition is 1.25.By preceding method with 0.6g/m 2, 1.0g/m 2and 1.6g/m 2application rate obtained organopolysiloxane composition is applied on polyethylene-laminated paper, and solidify, and measure kinetic friction coefficient on the cured layer obtaining at each.Outcome record is in table 1.
[comparing embodiment 1]
Defer to the program of practical embodiments 2, but use 91.3 parts (CA1) at two ends of molecular chain and in side chain position, there is vinyl, the polydimethylsiloxane with the viscosity of 60mPas and the contents of ethylene of 1.60 quality % replaces described component (A1) and component (A2), to obtain solvent-free curable organopolysiloxane composition (comparative composition 1).By preceding method with 0.6g/m 2, 1.0g/m 2and 1.6g/m 2application rate obtained organopolysiloxane composition is applied on polyethylene-laminated paper, and solidify, and measure kinetic friction coefficient on the cured layer obtaining at each.Outcome record is in table 1.
[comparing embodiment 2]
Defer to the program of practical embodiments 2, but use 91.3 parts (CA1) at two ends of molecular chain and in side chain position, there is hexenyl, the polydimethylsiloxane with the viscosity of 350mPas and the contents of ethylene of 0.70 quality % replaces described component (A1) and component (A2), to obtain solvent-free curable organopolysiloxane composition (comparative composition 2).By preceding method with 0.6g/m 2, 1.0g/m 2and 1.6g/m 2application rate obtained organopolysiloxane composition is applied on polyethylene-laminated paper, and solidify, and measure kinetic friction coefficient on the cured layer obtaining at each.Outcome record is in table 1.
[comparing embodiment 3]
Defer to the program of practical embodiments 2, but use 91.3 parts (CA1) at two ends of molecular chain and in side chain position, there is hexenyl, the polydimethylsiloxane with the viscosity of 100mPas and the contents of ethylene of 8.00 quality % replaces described component (A1) and component (A2), to obtain solvent-free curable organopolysiloxane composition (comparative composition 2).By preceding method with 0.6g/m 2, 1.0g/m 2and 1.6g/m 2application rate obtained organopolysiloxane composition is applied on polyethylene-laminated paper, and solidify, and measure kinetic friction coefficient on the cured layer obtaining at each.Outcome record is in table 1.
In addition, use method described below to measure the peeling force of the curing coating of practical embodiments 2, comparing embodiment 1 to 3.The results are shown in table 2.
[peeling force evaluation]
Use applicator in by solid 30g/m 2by (the trade(brand)name: Oribain BPS-5127 of the pressure-sensitive adhesive based on acrylic type solvent, from Toyo Ink Mfg.Co., Ltd.) be uniformly coated on the surface of the solidified coating producing by aforesaid method, and heat at 70 ℃, continue 2 minutes.Then by fine paper (weight per unit area=64g/m 2) stick on the surface of this acrylic type pressure-sensitive adhesive, and obtained sticky paper is cut into the width of 5cm, to prepare test sample.By 20g/cm 2load placed on this test sample, subsequently in air, under the humidity of the temperature of 25 ℃ and 60%, leave standstill 24 hours.Then use tension testing machine (Tensilon universal test instrument, from A & D Co., Ltd.), with the angle of 180 degree with peel off the paper of adhesion under the peeling rate of 0.3m/ minute, and measure the needed power (N) of peeling off.
[comparative examples 4]
On the cured layer carrying out according to comparative examples 1, measure kinetic friction coefficient, but in this case, use polyethylene terephthalate (PET) film rather than polyethylene-laminated paper.Outcome record is in table 2.
[practical embodiments 5]
On the cured layer carrying out according to embodiment 2, measure kinetic friction coefficient, but in this case, use polyethylene terephthalate (PET) film rather than polyethylene-laminated paper.Outcome record is in table 2.
[comparative examples 6]
On the cured layer carrying out according to comparative examples 3, measure kinetic friction coefficient, but in this case, use polyethylene terephthalate (PET) film rather than polyethylene-laminated paper.Outcome record is in table 2.
[table 1]
* the increase of kinetic friction coefficient
[table 2]
Peeling force (mN/50mm) Peeling rate (0.3m/ minute)
Embodiment 2 (composition 2) 230
Comparing embodiment 1 (comparative composition 1) 480
Comparing embodiment 2 (comparative composition 2) 290
Comparing embodiment 3 (comparative composition 3) 330
[table 3]
* the increase of kinetic friction coefficient
As shown in Table 1, for using polyethylene-laminated paper as base material, composition of the present invention, and be in particular composition 2 and composition 3, though in applied thickness from 0.6g/cm 2be changed to 1.0g/cm 2to 1.6g/cm 2time, the inhibition that the kinetic friction coefficient of cured layer is increased is provided, and provides at 1.6g/m 2application rate (thick coating) under the dependent inhibition to kinetic friction coefficient and speed.In addition, use composition 3, even with 0.6g/m 2application rate (shallow layer) under, the dependency of kinetic friction coefficient and speed is pressed into lower than 20%.On the other hand, in the curing coating of comparing embodiment 1 to 3, especially under the velocity of displacement that is greater than 30mm/ minute, from 0.6 to 1.0 to 1.6g/cm 2under, the dependent change of kinetic friction coefficient and speed is higher than 20%, and this depends on thickness.For the curing coating of comparing embodiment 2 and 3, with 1.6g/cm 2the kinetic friction coefficient of application rate (thick coating) and the dependency of speed be very large value.In addition, as shown in Table 2, the peeling force of comparing embodiment is relatively higher than the peeling force of practical embodiments.
As shown in Table 2, for using polyethylene terephthalate film as base material, the application's composition, and be composition 2 and 3 especially, though in applied thickness from 0.6g/cm 2be changed to 1.0g/cm 2to 1.6g/cm 2time, the inhibition that the kinetic friction coefficient of cured layer is increased is provided.

Claims (13)

1. a curable organopolysiloxane composition, comprises:
(A) 100 mass parts there are 25 ℃ time the viscosity of 20mPas to 500mPas and the C of 1.0 to 5.0 quality % scopes 4-12the mixture of at least two kinds of organopolysiloxanes of senior thiazolinyl content, wherein
(A1) there is the C of 0.5 to 2.0 quality % scope 4-12the organopolysiloxane of senior thiazolinyl content and
(A2) there is the C of 2.5 to 5.0 quality % scopes 4-12the organopolysiloxane of senior thiazolinyl content
Mass ratio with 1/4 to 4/1 mixes,
(B) 0.5 to 15 mass parts from colloidal state when thering are 25 ℃ at least 1,000, the scope of the fluid of 000mPas viscosity and there is the C of 0.005 to 0.100 quality % 2-12two ends at molecular chain of thiazolinyl content are by the dimethyl polysiloxane of dimethylvinylsiloxy end-blocking,
(C) per molecule has the organic hydrogen polysiloxanes of the hydrogen atom of at least two silicon bondings, and the value that its amount is the mol ratio of the thiazolinyl in SiH group and component (A) and the component (B) making in component (C) is 0.5 to 5, and
(D) platinum-type catalyzer of catalytic amount.
2. curable organopolysiloxane composition according to claim 1, wherein the senior thiazolinyl in component (A) is hexenyl.
3. curable organopolysiloxane composition according to claim 1, is characterized in that, described composition is solvent-free, and the viscosity of described composition in its entirety 100mPas to 5 while being 25 ℃, 000mPas.
4. curable organopolysiloxane composition according to claim 2, is characterized in that, described composition is solvent-free, and the viscosity of described composition in its entirety 100mPas to 5 while being 25 ℃, 000mPas.
5. according to the curable organopolysiloxane composition described in any one in claim 1 to 4, it is characterized in that, in the time measuring kinetic friction coefficient with the velocity of displacement of 10mm/ minute according to the P8147 of Japanese Industrial Standards on the cured layer by providing below: with 0.6g/m 2with with 1.6g/m 2described curable organopolysiloxane composition is coated on the base material of sheet form, and in each case by within 30 seconds, being cured 130 ℃ of heating; The % of the kinetic friction coefficient that formula by below calculates increase (') be no more than 10%:
The % of kinetic friction coefficient increase (')=[{ (with 1.6g/m 2the kinetic friction coefficient of the described cured layer of coating)-(with 0.6g/m 2the kinetic friction coefficient of the described cured layer of coating) }/with 0.6g/m 2the kinetic friction coefficient of the described cured layer of coating] v100.
6. goods for sheet form, cured layer providing according to the curable organopolysiloxane composition described in any one in claim 1 to 5 by thermofixation is provided for it.
7. the goods of according to claim 6 form, is characterized in that described cured layer is by with 1.0g/m 2to 10.0g/m 2speed will be coated on the base material of sheet form according to the curable organopolysiloxane composition described in any one in claim 1 to 5 and solidify by applying heat the cured layer that described composition provides.
8. the goods of according to claim 7 form, the base material of wherein said form is polyethylene-laminated paper or plastic film.
9. a surface protective plate, it comprises according to the goods of the sheet form described in any one in claim 6 to 8.
10. prepare according to a method for the goods of the sheet form described in claim 6 or 7, described method feature is:
Use 1.0g/m 2to 10.0g/m 2according to the base material of the curable organopolysiloxane composition coated sheets form described in any one in claim 1 to 5; And
Be cured to form cured layer by applying heat.
Prepare the method for surface protective plate, it is characterized in that for 11. 1 kinds:
Use 1.0g/m 2to 10.0g/m 2the base material of the transparent in fact sheet form of the curable organopolysiloxane composition coating according to described in any one in claim 1 to 5; And
Be cured to form cured layer by applying heat.
12. 1 kinds of laminates, it is manufactured by following: the base material (S1) that the adhesive sheet (SA) that the formation of pressure-sensitive adhesive layer providing at least one side of base material of sheet form is provided is applied to sheet form, the base material that the base material (S1) of described form comprises a kind of form, the base material of this sheet form at least has the cured layer providing according to the curable organopolysiloxane composition described in any one in claim 1 to 5 by thermofixation in one side at it, wherein applies described formation of pressure-sensitive adhesive layer is contacted with above-mentioned cured layer.
13. 1 kinds of laminates, it is manufactured by following: the base material (S1) that the residual plate (SR) that the adherent layer providing at least one side of base material of sheet form is provided is applied to sheet form, the base material that the base material (S1) of described form comprises a kind of form, the base material of this sheet form at least has the cured layer providing according to the curable organopolysiloxane composition described in any one in claim 1 to 5 by thermofixation in one side at it, wherein applies described adherent layer is contacted with above-mentioned cured layer.
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