KR860003303A - Transparent membrane structure and manufacturing method thereof - Google Patents

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Description

Transparent membrane structure and manufacturing method thereof

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Claims (86)

Vinyl chain-stopped liquid polysiloxane of general formula (I); (R ² ) ₃ is a resinous organopolysiloxane copolymer consisting of _0.5 units of SiO and ₂ units of SiO _2, wherein R ² is a monovalent hydrocarbon group without vinyl groups or aliphatic unsaturations; The ratio of (R ² ) ₃ SiO _0.5 units to SiO ₂ units is about 0.5 to about 1: 1, and about 1.5 to about 10 mol% of silicon atoms contain silicon-bonded vinyl groups; And an antivibration cured silicone coating composition consisting of liquid organohydrogenpolysiloxane of general formula (II) sufficient to provide about 0.5 to about 1.0 silicon-bonded hydrogen atoms per silicon-bonded vinyl group. Wherein R and R ¹ are monovalent hydrocarbon groups without aliphatic unsaturation, provided that at least 50 mole% of the R ¹ groups are methyl; n is a value sufficient to provide a viscosity of at most 500 centipoise at 25 ° C .; a is about 1.0 to about 2.1, b is about 0.1 to 1.0, and the sum of a and b is about 2.0 to about 2.7; In formula (II), there are two or more silicon-bonded hydrogen atoms per molecule. Vinyl chain-stopped liquid polysiloxane of general formula (I); Resinous organopolysiloxane copolymers consisting of (R ³ ) ₃ SiO _0.5 units, (R ³ ) ₂ SiO and SiO ₂ units, wherein R ³ is a vinyl group or a monovalent hydrocarbon group without aliphatic unsaturation; About 1.5 to about 10 mole percent silicon atoms contain silicon-bonded vinyl groups, and the ratio of (R) ₃ SiO _0.5 units to SiO ₂ units is about 0.5: 1 to about 1: 1, and (R ³ ) The ratio of ₂ SiO units to SiO ₂ units may be 0.1: 1 or less; Platinum catalysts; And an antivibration cured silicone coating composition consisting of liquid organohydrogenpolysiloxane of general formula (II) sufficient to provide about 0.5 to about 1.0 silicon-bonded hydrogen atoms per silicon-bonded vinyl group. Wherein R and R ¹ are monovalent hydrocarbon groups without aliphatic unsaturation, provided that at least 50 mole% of the R ¹ groups are methyl; n is a value sufficient to provide a viscosity of at most 1000 centipoise at 25 ° C .; a is about 1.0 to about 2.1, b is about 0.1 to 1.0, and the sum of a and b is about 2.0 to 2.7; In general formula (II), two or more silicon-bonded hydrogen atoms exist per molecule. The composition of claim 1 further comprising a finely divided inorganic filler. The composition of claim 2 further comprising a finely divided inorganic filler. The composition of claim 1, wherein all groups represented by R and R ¹ in the vinyl stopped polysiloxane are methyl or phenyl groups. 3. The composition of claim 2, wherein all groups represented by R and R ¹ in the vinyl stopped polysiloxane are methyl or phenyl groups. The composition of claim 1, wherein all groups represented by R and R ¹ in the vinyl stopped polysiloxane are methyl groups. The composition of claim 2, wherein all groups represented by R and R ¹ in the vinyl stopped polysiloxane are methyl groups. The composition of claim 1 wherein the viscosity of the vinylstopped polysiloxane is from about 100 to about 500 centipoise at 25 ° C. 3. The composition of claim 2 wherein the viscosity of the vinylstopped polysiloxane is from about 100 to about 500 centipoise at 25 ° C. The composition according to claim 1, wherein the group represented by R ² but not vinyl in the resinous organopolysiloxane copolymer is a methyl or phenyl group. The composition according to claim 2, wherein the group represented by R ³ but not vinyl in the resinous organopolysiloxane copolymer is a methyl or phenyl group. The composition according to claim 1, wherein all groups represented by R ² but not vinyl groups in the resinous organopolysiloxane copolymer are methyl or phenyl groups. The composition of claim 1 wherein all groups represented by R ³ but not vinyl groups in the resinous organopolysiloxane copolymer are methyl groups. The composition of claim 1, wherein from about 0.75 to about 1.25 parts by weight of the resinous organopolysiloxane copolymer is present per 100 parts by weight of the vinyl stop polysiloxane. 3. The composition of claim 2, wherein from about 0.75 to about 1.25 parts by weight of the resinous organopolysiloxane copolymer is present per 100 parts by weight of the vinyl stop polysiloxane. 4. The composition of claim 3, wherein the finely ground inorganic filler is crushed quartz, titanium dioxide, ferric oxide, chromium oxide, glass fibers, calcium carbonate, carbon black or talc. The composition of claim 4, wherein the finely ground inorganic filler is crushed quartz, titanium dioxide, ferric oxide, chromium oxide, glass fibers, calcium carbonate, carbon black or talc. The composition of claim 1, wherein the catalyst is present in an amount sufficient to provide about 10 ⁻³ to about 10 ⁻⁶ grams of platinum per mole of silicon-bonded vinyl group in the composition. The composition of claim 2 wherein the catalyst is present in an amount sufficient to provide about 10 ⁻³ to about 10 ⁻⁶ grams of platinum per mole of silicon-bonded vinyl group in the composition. The composition of claim 1, wherein the organohydrogenpolysinoxane is selected from the group consisting of 1,3,5,7-tetramethylcyclotetrasiloxane; Dimethylhydrogen chain-stopped dimethylpolysiloxanes; polysiloxanes having 2 to 10 silicon atoms containing dimethylsiloxane units, methylhydrogensiloxane units and trimethylsiloxane units; Or a branched liquid consisting of dimethylhydrogensiloxane units and SiO ₂ units. 3. The composition of claim 2 wherein the organohydrogenpolysinoxane is selected from the group consisting of 1,3,5,7-tetramethylcyclotetrasiloxane; Dimethylhydrogen chain-stopped dimethylpolysiloxanes; Polysiloxanes having 2 to 10 silicon atoms containing dimethylsiloxane units, methylhydrogensiloxane units and trimethylsiloxane units; Or a dimethylhydrogensiloxane unit and a SiO ₂ unit in a low viscosity liquid composed of a ratio of about 2: 1. Vinyl chain-stopped liquid polysiloxane of general formula (I); Resinous resin consisting of (R ² ) ₃ SiO _0.5 units, and SiO ₂ units, or (R ³ ) ₃ SiO _0.5 units, (R ³ ) ₂ SiO units, and SiO ₂ units, or a mixture thereof. Ganopolysiloxane copolymers wherein R ² and R ³ are monovalent hydrocarbon groups without vinyl groups or aliphatic unsaturations, and from about 1.5 to about 10 mole% of silicon atoms contain silicon-bonded vinyl groups, The ratio of sex units to tetrafunctional units is from about 0.5 to about 1: 1, and the ratio of bifunctional units to tetrafunctional units is about 0.1: 1 or less]; Dust-resistant cured silicone, characterized by mixing a liquid organohydrogenpolysiloxane of general formula (II) sufficient to provide about 0.5 to about 1.0 silicon-bonded hydrogen atoms per platinum catalyst and silicon-bonded vinyl group Process for preparing coating composition. Wherein R and R ¹ are monovalent hydrocarbon groups without aliphatic unsaturation, provided that at least 50 mol% of the R ¹ groups are methyl groups; n is a value sufficient to provide a viscosity of about 1,000 centipoise or less at 25 ° C .; a is about 1.0 to about 2.1, b is about 0.1 to 1.0, and the sum of a and b is about 2.0 to 2.7; In formula (II), there are two or more silicon-bonded hydrogen atoms per molecule. 24. The method of claim 23, further comprising mixing the finely divided inorganic filler in the composition. 24. The method of claim 23, wherein all groups represented by R and R ¹ in the vinyl stopped polysiloxane are methyl groups. 24. The method of claim 23, wherein all groups represented by R and R ¹ in the vinyl stopped polysiloxane are methyl groups. 24. The method of claim 23, wherein the viscosity of the vinylstopped polysiloxane is from about 100 to about 500 centipoise at 25 ° C. 24. The method of claim 23, wherein all groups represented by R ² and R ³ other than vinyl groups in the resinous organopolysiloxane copolymer are methyl or phenyl groups. The method according to claim 23, wherein the groups represented by R ² and R ³ which are not vinyl groups in the resinous organopolysiloxane copolymer are phenyl groups. 24. The method of claim 23, wherein from about 0.75 to about 1.25 parts by weight of the resinous organopolysiloxane copolymer is present per 100 parts by weight of the vinylstopped polysiloxane. 25. The method of claim 24, wherein the pulverized inorganic filler is crushed quartz, titanium dioxide, ferric oxide, chromium oxide, glass fibers, calcium carbonate, carbon black or talc. The method of claim 23, wherein the catalyst is present in an amount sufficient to provide about 10 ⁻³ to about 10 ⁻⁶ grams of platinum per mole of silicon-bonded vinyl group in the composition. The method of claim 23, wherein the organohydrogenpolysiloxane is selected from 1,2,3,5,7-tetramethylcyclotetrasiloxane; Dimethylhydrogen chain-stopped dimethylpolysiloxanes; Polysiloxanes having 2 to 10 silicon atoms containing dimethylsiloxane units, methylhydrogensiloxane units and trimethylsiloxane units; Or a dimethylhydrogensiloxane unit and a SiO ₂ unit are low viscosity liquids composed of a ratio of about 2: 1. Vinyl chain-stopped liquid polysiloxane of general formula (I); Resin organopoly consisting of (R ² ) ₃ SiO _0.5 units and SiO ₂ units, or (R ³ ) ₃ Si0 _0.5 units, (R ³ ) ₂ SiO units and SiO ₂ , or a mixture thereof. Siloxane copolymers wherein R ² and R ³ are monovalent hydrocarbon groups without vinyl groups or aliphatic unsaturations, and about 1.5 to about 10 mole% of silicon atoms contain silicon-bonded vinyl groups, and are monofunctional The ratio of unit to tetrafunctional unit is from about 0.5: 1 to about 1: 1: the ratio of bifunctional unit to tetrafunctional unit is about 0.1: 1 or less; Platinum catalysts; And mixing the liquid organohydrogenpolysiloxane of general formula (II) sufficient to provide about 0.5 to about 1.0 silicon-bonded hydrogen atoms per silicon-bonded vinyl group, and applying the resulting mixture to a suitable substrate. To harden the mixture to a substrate, thereby producing a dustproof substrate. Wherein R and R ¹ are monovalent hydrocarbon groups without aliphatic unsaturation, provided that at least 50 mol% of the R ¹ groups are methyl groups; n is a value sufficient to provide a viscosity of at most 1,000 centipoise at 25 ° C .; a is about 1.0 to about 2.1, b is about 0.1 to 1.0, and the sum of a and b is about 2.0 to 2.7; In formula (II), there are two or more silicon-bonded hydrogen atoms per molecule. 35. The method of claim 34, further comprising mixing the finely divided filler in the composition. 35. The method of claim 34, wherein all groups represented by R and R ¹ in the vinyl stopped polysiloxane are methyl or phenyl groups. 35. The method of claim 34, wherein all groups represented by R and R ¹ in the vinyl stopped polysiloxane are methyl groups. 35. The method of claim 34, wherein the viscosity of the vinylstopped polysiloxane is from about 100 to about 500 centipoise at 25 ° C. 35. The method of claim 34, wherein all of the valences represented by R ² and R ³ other than vinyl groups in the resinous organopolysiloxane copolymer are methyl or phenyl groups. 35. The method of claim 34, wherein all of the valences represented by R ² and R ³ other than vinyl groups in the resinous organopolysiloxane copolymer are methyl groups. 35. The method of claim 34, wherein from about 0.75 to about 1.25 parts by weight of the resinous organopolysiloxane copolymer is present per 100 parts by weight of the vinylstopped polysiloxane. 36. The method of claim 35, wherein the pulverized inorganic filler is crushed quartz, titanium dioxide, ferric oxide, chromium oxide, glass fibers, calcium carbonate, carbon black or talc. The method of claim 34, wherein the catalyst is present in an amount sufficient to provide about 10 ⁻³ to about 10 ⁻⁶ grams of platinum per mole of silicon-bonded vinyl group in the composition. The method of claim 34, wherein the organohydrogenpolysinoxane is selected from the group consisting of 1,3,5,7-tetramethylcyclotetrasiloxane; Dimethylhydrogen chain-stopped dimethylpolysiloxanes; Polysiloxanes having 2 to 10 silicon atoms containing dimethylsiloxane units, methylhydrogensiloxane units and trimethylsiloxane units; Or a low viscosity liquid consisting of a ratio of about 2: 1 dimethylhydrogensiloxane units to SiO ₂ units. Textile materials, substrate coating compositions, and vinyl chain-stopped liquid polysiloxanes of general formula (I); A resinous organopolysaloxane copolymer consisting of (R ³ ) ₃ SiO _0.5 units, (R ³ ) ₂ SiO and SiO ₂ units, or mixtures thereof, wherein R ² and R ³ are vinyl groups or It is a monovalent hydrocarbon group without aliphatic unsaturation, and about 1.5 to about 10 mole% of silicon atoms contain silicon-bonded vinyl groups, and the ratio of monofunctional to tetrafunctional units is about 0.5: 1 to about 1: 1. 1 and the ratio of di- or tetra-functional units is about 0.1: 1 or less]; Platinum catalysts; And a dustproof silicone coating composition containing a liquid organohydrogenpolysiloxane of general formula (II) sufficient to provide about 0.5 to about 1.0 silicon-bonded hydrogen atoms per silicon-bonded vinyl group. Membrane structures. Wherein R and R ¹ are monovalent hydrocarbon groups without aliphatic unsaturation, provided that at least 50 mol% of the R ¹ groups are methyl groups; n is a value sufficient to provide a viscosity of at most 1000 centipoise at 25 ° C .; a is about 1.0 to about 2.1, b is about 0.1 to about 1.0, and the sum of a and b is about 2.0 to about 2.7; In formula (II), there are two or more silicon-bonded hydrogen atoms per molecule. 46. The composition of claim 45, wherein the textile substrate is made from a material selected from the group consisting of cotton, polyester, nylon, and glass fabrics. 46. The composition of claim 45, wherein the textile substrate is a glass fabric. 46. The composition of claim 45, wherein the textile substrate is a woven fabric. 46. The composition of claim 45, wherein the textile substrate is a knitted fabric. 46. The composition of claim 45, wherein the textile substrate is a nonwoven. 46. The composition of claim 45, wherein the textile substrate is a laminated, reinforced plastic. 46. The composition of claim 45, wherein the textile substrate is a glass fiber fabric. 46. The composition of claim 45, wherein the substrate composition is transparent or translucent. 46. The composition of claim 45, wherein the base coating composition is a silicone composition. 46. The composition of claim 45, wherein the dustproof silicone coating composition further comprises an pulverized inorganic filler. 46. The composition of claim 45, wherein all groups represented by R and R ¹ in the vinyl stopped polysiloxane are methyl or phenyl groups. 46. The composition of claim 45, wherein all groups represented by R and R ¹ in the vinyl stopped polysiloxane are methyl groups. 46. The composition of claim 45, wherein the viscosity of the vinylstopped polysiloxane is from about 100 to about 500 centipoise at 25 ° C. 46. The composition of claim 45, wherein all groups represented by R ² and R ³ other than vinyl groups in the resinous organopolysiloxane copolymer are methyl or phenyl groups. 46. The composition of claim 45, wherein all groups represented by R ² and R ³ other than vinyl groups in the resinous organopolysiloxane copolymer are methyl groups. 46. The composition of claim 45, wherein from about 0.75 to about 1.25 parts by weight of the resinous organopolysiloxane copolymer is present per 100 parts by weight of the vinylstopped polysiloxane. 56. The composition of claim 55 wherein the pulverized inorganic filler is ground quartz, titanium dioxide, ferric oxide, dichromium oxide, glass fibers, calcium carbonate, carbon black or talc. 46. The composition of claim 45, wherein the catalyst is present in an amount sufficient to provide about ^10-3 to about ^10-6 grams of platinum per mole of silicon-bonded vinyl group in the composition. 46. The composition of claim 45, wherein the organohydrogenpolysiloxane is selected from 1,3,5,7-tetramethylcyclotetrasiloxane; Dimethylhydrogen chain-stopped dimethylpolysiloxanes; Polysiloxanes having 2 to 10 silicon atoms containing dimethylsiloxane units, methylhydrogensiloxane units and trimethylsiloxane units; Or a dimethylhydrogensiloxane unit to SiO ₂ unit is a low viscosity liquid consisting of a ratio of about 2: 1. 46. The composition of claim 45, wherein the dustproof silicone coating composition has a thickness of about 50 mils or less. 46. The composition of claim 45, wherein the dustproof silicone coating composition has a thickness of about 1 to about 20 mils. At least one side of the fabric base is treated with the substrate coating composition, and the vinyl chain-stopped liquid polysiloxane of general formula (I); Consisting of (R ³ ) ₃ SiO _0.5 units, (R ³ ) ₂ SiO and SiO ₂ units, or (R ³ ) ₃ Si0 _0.5 units, (R ³ ) ₂ SiO units and SiO ₂ , or mixtures thereof Resin organopolysiloxane copolymer consisting of R ² and R ³ is a vinyl group or a monovalent hydrocarbon group without aliphatic unsaturation, and about 1.5 to about 10 mol% of silicon atoms are silicon-bonded vinyl groups. Wherein the ratio of monofunctional units to tetrafunctional units is from about 0.5: 1 to about 1: 1, and the ratio of bifunctional units to tetrafunctional units is about 0.1: 1 or less]; Platinum catalysts; And mixing the liquid organohydrogenpolysiloxane of general formula (II) sufficient to provide about 0.5 to about 1.0 silicon-bonded hydrogen atoms per silicon-bonded vinyl group, and applying the resulting mixture to a suitable substrate. To harden the mixture to a substrate, thereby producing a dustproof substrate. Wherein R and R ¹ are monovalent hydrocarbon groups without aliphatic unsaturation, provided that at least 50 mol% of the R ¹ groups are methyl groups; n is a value sufficient to provide a viscosity of at most 1,000 centipoise at 25 ° C .; a is about 1.0 to about 2.1, b is about 0.1 to 1.0, and the sum of a and b is about 2.0 to about 2.7; In formula (II), there are two or more silicon-bonded hydrogen atoms per molecule. 68. The method of claim 67, wherein the textile substrate is made from cotton, polyester, nylon or glass fabric. 68. The method of claim 67, wherein the textile substrate is a glass fabric. 68. The method of claim 67, wherein the textile substrate is a woven fabric. 68. The method of claim 67, wherein the textile substrate is a knitted fabric. 68. The method of claim 67, wherein the textile substrate is a nonwoven. 68. The method of claim 67, wherein the textile substrate is a laminated, reinforced plastic. 68. The method of claim 67, wherein the textile substrate is a glass fiber fabric. 68. The method of claim 67, wherein the substrate coating composition is transparent or translucent. 68. The method of claim 67, wherein the substrate coating composition is a silicone composition. 68. The method of claim 67, wherein the dustproof silicone coating composition further comprises a finely divided inorganic filler. 68. The method of claim 67, wherein all groups represented by R and R ¹ in the vinyl stopped polysiloxane are methyl or phenyl groups. 68. The method of claim 67, wherein all groups represented by R and R ¹ in the vinyl stopped polysiloxane are methyl groups. 68. The method of claim 67, wherein the viscosity of the vinylstopped polysiloxane is from about 300 to about 500 centipoise at 25 ° C. 68. The method of claim 67, wherein all groups represented by R ² and R ³ in the resinous organopolysiloxane copolymer, which are not vinyl groups, are methyl or phenyl groups. 68. The method of claim 67, wherein all groups represented by R ² and R ³ in the resinous organopolysiloxane copolymer, which are not vinyl groups, are methyl groups. 68. The method of claim 67, wherein there are about 0.75 to about 1.25 parts by weight of the resinous organopolysiloxane copolymer per 100 parts by weight of the vinylstopped polysiloxane. 78. The method of claim 77, wherein the pulverized inorganic filler is pulverized quartz, titanium dioxide, ferric oxide, chromium oxide, glass fibers, calcium carbonate, carbon black or talc. The method of claim 67, wherein the catalyst is present in an amount sufficient to provide about 10 ⁻³ to about 10 ⁻⁶ grams of platinum per mole of silicon-bonded vinyl group in the composition. 68. The method of claim 67, wherein the organohydrogenpolysinoxane is selected from the group consisting of 1,3,5,7-tetramethylcyclotetrasiloxane; Dimethyl hadrogen chain-stopped dimethylpolysiloxane; Polysiloxanes having 2 to 10 silicon atoms containing dimethylsiloxane units, methylhydrogensiloxane units and trimethylsiloxane units; Or a low viscosity liquid consisting of a ratio of about 2: 1 dimethylhydrogensiloxane units to SiO ₂ units. ※ Note: The disclosure is based on the initial application.