Photosensitive elastomer composition for flexible resin plate and flexible resin plate containing photosensitive elastomer composition

Abstract

According to the photosensitive elastomer composition for the flexible resin plate and the flexible resin plate containing the photosensitive elastomer composition, the sensitivity of a photosensitive layer can be improved by adopting the efficient oxime ester initiator, and the phenomenon that the plate surface is sticky can be reduced; meanwhile, in order to prevent the problem of brittleness of the photosensitive elastomer caused by excessive initiator, macromolecular liquid cyclohexane-1, 2-dicarboxylic acid diisononyl ester is introduced into the photosensitive elastomer for the flexible resin plate as plasticizing oil, the contained isopropyl-terminated group has excellent blending property, and the long-chain alkyl group has good flexibility, so that the brittleness phenomenon is solved; through the organic combination of the functions of the efficient oxime ester initiator and the liquid cyclohexane-1, 2-dicarboxylic acid diisononyl ester, the flexible resin plate has the performance of forming a smooth field surface.

Description

Technical Field

[0001] This invention relates to the field of letterpress printing technology, and more specifically to a photosensitive elastomer composition for flexible resin plates and a flexible resin plate containing the photosensitive elastomer composition. Background Technology

[0002] In recent years, flexographic printing plates have been widely used for printing on easily deformable or relatively soft substrates such as cartons, flexible packaging, and labels. Currently, the technology for ordinary flexographic printing plates is mature, with major international companies such as DuPont, Ensis, and Asahi Kasei, as well as domestic companies like Lucky Huaguang, producing their own plates. With the rapid development of my country's economy, the demand for flexographic printing plates used in printing and packaging will continue to increase.

[0003] However, the quality of domestically produced flexographic printing plates still lags significantly behind that of foreign products, requiring further improvement. Generally, flexographic printing uses water-based inks, which are environmentally friendly and therefore popular. Ordinary flexographic printing plates easily meet the requirements when printing on rough substrates like cardboard boxes; however, when printing on flexible packaging materials such as films and labels, they often result in unclear prints. This is related to the state of the solid surface on the flexographic plate's relief; a solid surface with orange peel texture leads to unclear prints, while a smooth solid surface avoids these defects. Therefore, developing flexographic printing plates capable of forming smooth solid surfaces has become a technological hotspot. Summary of the Invention

[0004] To address the aforementioned problems, the present invention provides a photosensitive elastomer composition for flexible resin plates and a flexible resin plate containing the photosensitive elastomer composition, wherein the flexible resin plate can form a smooth, solid surface.

[0005] The object of the present invention is achieved by the following means: a photosensitive elastomer composition for flexible resin plates, the photosensitive elastomer composition comprising: (A) A triblock polymer with an aba structure, wherein a is a monoaryl olefin monomer and b is a diene monomer; (B) Liquid cyclohexane-1,2-dicarboxylic acid diisononyl ester plasticizer; (C) A monomer containing at least one unsaturated double bond functional group; (D) Oxime ester photoinitiator; (E) Antioxidant; (F) Dye.

[0006] The (A) aba-structured triblock polymer comprises 50-70% of the total mass of the photosensitive elastomer composition; (B) liquid cyclohexane-1,2-dicarboxylic acid diisononyl ester plasticizer comprises 10-30% of the total mass of the photosensitive elastomer composition; (C) monomers containing at least one unsaturated double bond functional group comprise 5-20% of the total mass of the elastomer composition; (D) oxime ester photoinitiator comprises 1-5% of the total mass of the photosensitive elastomer composition; (E) antioxidant comprises 0.1-1.5% of the total mass of the photosensitive elastomer composition; and (F) dye comprises 0.05-1% of the total mass of the photosensitive elastomer composition.

[0007] The triblock polymer with the (A)aba structure is a styrene-butadiene-styrene triblock copolymer (SBS), a styrene-isoprene-styrene block copolymer (SIS), or a partially hydrogenated SEBS; The (C) is an unsaturated acrylate containing at least one unsaturated double bond monomer.

[0008] The (D) oxime ester photoinitiator is OXE-01. Or OXE-02 The dye in (F) is a cyanine dye with an absorption band in the range of 300-480nm.

[0009] The unsaturated acrylate (C) is at least one of the following: 1,6-hexanediol diacrylate, dipropylene glycol diacrylate, trimethylolpropane trimethacrylate, trimethylolpropane triacrylate, 1,6-hexanediol dimethacrylate, tripropylene glycol diacrylate, triethylene glycol diacrylate, triethylene glycol di(meth)acrylate, tetraethylene glycol di(meth)acrylate, pentaethylene glycol di(meth)acrylate, neopentyl glycol diacrylate, propoxylated neopentyl glycol diacrylate, 2-phenoxyethyl acrylate, 1,9-nonanediol di(meth)acrylate, 2-methyl-1,3-propylene glycol diacrylate, 2,2-di(p-hydroxy)propene di(meth)acrylate, 4-morpholine acrylate, 2-N-morpholine methacrylate, isobornyl acrylate, and isobornyl methacrylate. The dye (F) is at least one of the following: Red 335, Red Base 543, Neozapon 346, SolventRed 52, Rhodamine Blue, Methyl Violet, and Ethyl Violet.

[0010] A flexible resin plate, comprising, from top to bottom, a protective layer, an anti-stick layer, a photosensitive elastomer, an adhesive layer, and a support, wherein the photosensitive elastomer is formed by hot pressing and melting the aforementioned photosensitive elastomer composition at high temperature.

[0011] Compared to existing technologies, this invention provides a photosensitive elastomer composition for flexible resin plates and a flexible resin plate containing the photosensitive elastomer composition. The use of a highly efficient oxime ester initiator improves the sensitivity of the photosensitive layer and reduces the stickiness of the plate surface. Simultaneously, to prevent brittleness of the photosensitive elastomer caused by excessive initiator use, a high-molecular-weight liquid cyclohexane-1,2-dicarboxylic acid diisononyl ester is introduced as a plasticizer into the photosensitive elastomer for flexible resin plates. The terminal isopropyl groups contain excellent blendability, and its long-chain alkyl groups possess good flexibility, thereby solving the brittleness problem. By employing the organic combination of the functions of the highly efficient oxime ester initiator and the liquid cyclohexane-1,2-dicarboxylic acid diisononyl ester, the flexible resin plate synergistically achieves the property of forming a smooth, solid surface. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of the present invention.

[0013] The components include: protective layer 1, anti-stick layer 2, photosensitive elastomer 3, adhesive layer 4, and support body 5. Detailed Implementation

[0014] The present invention will now be described in detail with reference to specific embodiments. It should be noted that these embodiments are only used to further illustrate the present invention and should not be construed as limiting the scope of protection of the present invention. Those skilled in the art can make some non-essential improvements and adjustments based on the above description of the present invention.

[0015] A photosensitive elastomer composition for flexible resin plates, the photosensitive elastomer composition comprising: (A) A triblock polymer with an aba structure, wherein a is a monoaryl olefin monomer and b is a diene monomer; (B) Liquid cyclohexane-1,2-dicarboxylic acid diisononyl ester plasticizer; (C) A monomer containing at least one unsaturated double bond functional group; (D) Oxime ester photoinitiator; (E) Antioxidant; (F) Dye.

[0016] Liquid cyclohexane-1,2-dicarboxylic acid diisononyl ester, molecular weight 424, has the following structure: The (A) aba-structured triblock polymer comprises 50-70% of the total mass of the photosensitive elastomer composition; (B) liquid cyclohexane-1,2-dicarboxylic acid diisononyl ester plasticizer comprises 10-30% of the total mass of the photosensitive elastomer composition; (C) monomers containing at least one unsaturated double bond functional group comprise 5-20% of the total mass of the elastomer composition; (D) oxime ester photoinitiator comprises 1-5% of the total mass of the photosensitive elastomer composition; (E) antioxidant comprises 0.1-1.5% of the total mass of the photosensitive elastomer composition; and (F) dye comprises 0.05-1% of the total mass of the photosensitive elastomer composition.

[0017] A triblock polymer with an aba structure, where a is a monoaryl olefin monomer and b is a diene monomer.

[0018] The triblock polymer with the (A)aba structure is a styrene-butadiene-styrene triblock copolymer (SBS), a styrene-isoprene-styrene block copolymer (SIS), or a partially hydrogenated SEBS; The (C) is an unsaturated acrylate containing at least one unsaturated double bond monomer. The unsaturated acrylate of (C) is at least one of the following: 1,6-hexanediol diacrylate, dipropylene glycol diacrylate, trimethylolpropane trimethacrylate, trimethylolpropane triacrylate, 1,6-hexanediol dimethacrylate, tripropylene glycol diacrylate, triethylene glycol diacrylate, triethylene glycol di(meth)acrylate, tetraethylene glycol di(meth)acrylate, pentaethylene glycol di(meth)acrylate, neopentyl glycol diacrylate, propoxylated neopentyl glycol diacrylate, 2-phenoxyethyl acrylate, 1,9-nonanediol di(meth)acrylate, 2-methyl-1,3-propylene glycol diacrylate, 2,2-di(p-hydroxy)propene di(meth)acrylate, 4-morpholine acrylate, 2-N-morpholine methacrylate, isobornyl acrylate, and isobornyl methacrylate.

[0019] The (D) oxime ester photoinitiator is OXE-01. Or OXE-02 The antioxidants in (E) can be octadecyl β-(3,5-di-tert-butyl-4-hydroxyphenyl)propionate (commonly known as 1076), 2,6-di-tert-butyl-p-cresol (commonly known as 264), pentaerythritol tetrakis[β-(3,5-di-tert-butyl-4-hydroxyphenyl)propionate] (commonly known as 1010), tris[2,4-di-tert-butylphenyl]phosphite (commonly known as 168), etc.

[0020] The dye in (F) is a cyanine dye with an absorption band in the range of 300-480nm.

[0021] The dye (F) is at least one of the following: Red 335, Red Base 543, Neozapon 346, Solvent Red 52, Rhodamine Blue, Methyl Violet, and Ethyl Violet.

[0022] During the production of the photosensitive elastomer composition of the present invention, necessary additives, such as room temperature thermal polymerization inhibitors, can be added to the components. The room temperature thermal polymerization inhibitor is used to prevent the board from polymerizing at room temperature and to improve the room temperature stability of the board. The thermal polymerization inhibitor includes at least one of the following: hydroquinone, nitroxide free radical piperidinol, p-methoxyphenol, di-tert-butyl-p-cresol, pyrogallol, tert-butylcatechol, benzoquinone, 4,4'-thiobis-(3-methyl-6-tert-butylphenol), 2,2'-methylenebis(4-methyl-16-tert-butylphenol), and a primary cerium salt of N-nitrosophenylhydroxylamine.

[0023] A flexible resin plate, comprising, from top to bottom, a protective layer 1, an anti-sticking layer 2, a photosensitive elastomer 3, an adhesive layer 4, and a support 5, wherein the photosensitive elastomer is formed by hot pressing and melting the aforementioned photosensitive elastomer composition at high temperature.

[0024] Example 1 like Figure 1 As shown, a flexible resin plate includes, from top to bottom, a protective layer 1, an anti-stick layer 2, a photosensitive elastomer 3, an adhesive layer 4, and a support 5.

[0025] (1) Components of the photosensitive elastomer composition: A is: Styrene-isoprene-styrene triblock copolymer D1161 (SIS), KETEN High Performance Polymers Co., Ltd., 500 parts.

[0026] Liquid plasticizer B is: cyclohexane-1,2-dicarboxylic acid diisononyl ester, BASF, 300 parts.

[0027] The crosslinking monomer C is: 1,6-hexanediol diacrylate (HDDA), Tianjin Tianjiao Chemical Co., Ltd., 100 parts; 1,6-hexanediol dimethacrylate (HDDMA), Changxing Chemical Materials Co., Ltd., 25 parts.

[0028] Photoinitiator D is: OXE-01, Zhejiang Yangfan New Material Co., Ltd., 50 parts; Antioxidant E is: β-(3,5-di-tert-butyl-4-hydroxyphenyl)propionate n-octadecyl alcohol ester (commonly known as YFK-1076), Guangzhou Jufeng Chemical Technology Co., Ltd., 15 parts; Dye F is: Red 335 red dye, BASF, 10 parts.

[0029] (2) Plate making: The above-mentioned photosensitive elastomer composition is added to a high-speed compounding extruder and melt-mixed at high temperature. The mixed photosensitive elastomer composition is then hot-pressed onto a 175-micron or 100-micron thick PET support 5 (manufactured by Lucky Group) coated with an adhesive layer 4 (adhesive layer 4 is the adhesive layer in Example 1 of Patent CN101144980B) at 90-110°C to form a photosensitive elastomer 3. At the same time, a PET peelable protective layer 1 (manufactured by Lucky Group) with an anti-adhesive layer 2 (anti-adhesive layer is the anti-adhesive layer in Example 1 of Patent CN101470351B) is applied to the other side to produce a conventional flexible resin plate.

[0030] Example 2 like Figure 1 As shown, a flexible resin plate includes, from top to bottom, a protective layer 1, an anti-stick layer 2, a photosensitive elastomer 3, an adhesive layer 4, and a support 5.

[0031] (1) Components of the photosensitive elastomer composition: A is styrene-isoprene-styrene triblock copolymer D1161 (SIS), KETEN High Performance Polymers Co., Ltd., 700 parts.

[0032] Liquid plasticizer B is cyclohexane-1,2-dicarboxylic acid diisononyl ester, BASF, 238.5 parts.

[0033] Crosslinking monomer C is 1,6-hexanediol diacrylate (HDDA), Tianjin Tianjiao Chemical Co., Ltd., 40 parts; 1,6-hexanediol dimethacrylate (HDDMA), Changxing Chemical Materials Co., Ltd., 10 parts.

[0034] Photoinitiator D is OXE-02, BASF, 10 parts; Antioxidant E is β-(3,5-di-tert-butyl-4-hydroxyphenyl)propionate n-octadecyl alcohol ester (commonly known as YFK-1076), Guangzhou Jufeng Chemical Technology Co., Ltd., 1 part; Dye F is Red 335, BASF, 0.5 parts.

[0035] (2) Plate making: Same as in Example 1, except that the photosensitive elastomer components and dosage are different.

[0036] Example 3 like Figure 1As shown, a flexible resin plate includes, from top to bottom, a protective layer 1, an anti-stick layer 2, a photosensitive elastomer 3, an adhesive layer 4, and a support 5.

[0037] (1) Components of the photosensitive elastomer composition: A is styrene-isoprene-styrene triblock copolymer D1161 (SIS), KETEN High Performance Polymers Co., Ltd., 700 parts.

[0038] Liquid plasticizer B is cyclohexane-1,2-dicarboxylic acid diisononyl ester, BASF, 100 parts.

[0039] Crosslinking monomer C is 1,6-hexanediol diacrylate (HDDA), Tianjin Tianjiao Chemical Co., Ltd., 100 parts; 1,6-hexanediol dimethacrylate (HDDMA), Changxing Chemical Materials Co., Ltd., 25 parts.

[0040] Photoinitiator D is OXE-01, Zhejiang Yangfan New Material Co., Ltd., 50 parts; Antioxidant E is β-(3,5-di-tert-butyl-4-hydroxyphenyl)propionate n-octadecyl alcohol ester (commonly known as YFK-1076), Guangzhou Jufeng Chemical Technology Co., Ltd., 15 parts; Dye F is Red 335, BASF, 10 parts.

[0041] (2) Plate making: Same as in Example 1, except that the photosensitive elastomer components and dosage are different.

[0042] Example 4 like Figure 1 As shown, a flexible resin plate includes, from top to bottom, a protective layer 1, an anti-stick layer 2, a photosensitive elastomer 3, an adhesive layer 4, and a support 5.

[0043] (1) Components of the photosensitive elastomer composition: A is styrene-isoprene-styrene triblock copolymer D1161 (SIS), KETEN High Performance Polymers Co., Ltd., 500 parts.

[0044] Liquid plasticizer B is cyclohexane-1,2-dicarboxylic acid diisononyl ester, BASF, 250 parts.

[0045] Crosslinking monomer C is 1,6-hexanediol diacrylate (HDDA), Tianjin Tianjiao Chemical Co., Ltd., 160 parts; 1,6-hexanediol dimethacrylate (HDDMA), Changxing Chemical Materials Co., Ltd., 40 parts.

[0046] Photoinitiator D is OXE-02, BASF, 35 parts; Antioxidant E is β-(3,5-di-tert-butyl-4-hydroxyphenyl)propionate n-octadecyl alcohol ester (commonly known as YFK-1076), Guangzhou Jufeng Chemical Technology Co., Ltd., 10 parts; Dye F is Red 335, BASF, 5 parts.

[0047] (2) Plate making: Same as in Example 1, except that the photosensitive elastomer components and dosage are different.

[0048] Example 5 like Figure 1 As shown, a flexible resin plate includes, from top to bottom, a protective layer 1, an anti-stick layer 2, a photosensitive elastomer 3, an adhesive layer 4, and a support 5.

[0049] (1) Components of the photosensitive elastomer composition: A is styrene-butadiene-styrene triblock copolymer D1102 (SBS), KETEN High Performance Polymers Co., Ltd., 500 parts.

[0050] Liquid plasticizer B is cyclohexane-1,2-dicarboxylic acid diisononyl ester, BASF, 300 parts.

[0051] Crosslinking monomer C is 1,6-hexanediol diacrylate (HDDA), Tianjin Tianjiao Chemical Co., Ltd., 100 parts; 1,6-hexanediol dimethacrylate (HDDMA), Changxing Chemical Materials Co., Ltd., 25 parts.

[0052] Photoinitiator D is OXE-01, Zhejiang Yangfan New Material Co., Ltd., 50 parts; Antioxidant E is β-(3,5-di-tert-butyl-4-hydroxyphenyl)propionate n-octadecyl alcohol ester (commonly known as YFK-1076), Guangzhou Jufeng Chemical Technology Co., Ltd., 15 parts; Dye F is Red 335, BASF, 10 parts.

[0053] (2) Plate making: Same as in Example 1, except that the photosensitive elastomer components and dosage are different.

[0054] Example 6 like Figure 1 As shown, a flexible resin plate includes, from top to bottom, a protective layer 1, an anti-stick layer 2, a photosensitive elastomer 3, an adhesive layer 4, and a support 5.

[0055] (1) Components of the photosensitive elastomer composition: A is styrene-butadiene-styrene triblock copolymer D1102 (SBS), KETEN High Performance Polymer Co., Ltd., 700 parts.

[0056] Liquid plasticizer B is cyclohexane-1,2-dicarboxylic acid diisononyl ester, BASF, 238.5 parts.

[0057] Crosslinking monomer C is 1,6-hexanediol diacrylate (HDDA), Tianjin Tianjiao Chemical Co., Ltd., 40 parts; 1,6-hexanediol dimethacrylate (HDDMA), Changxing Chemical Materials Co., Ltd., 10 parts.

[0058] Photoinitiator D is OXE-02, BASF, 10 parts; Antioxidant E is β-(3,5-di-tert-butyl-4-hydroxyphenyl)propionate n-octadecyl alcohol ester (commonly known as YFK-1076), Guangzhou Jufeng Chemical Technology Co., Ltd., 1 part; Dye F is Red 335, BASF, 0.5 parts.

[0059] (2) Plate making: Same as in Example 1, except that the photosensitive elastomer components and dosage are different.

[0060] Example 7 like Figure 1 As shown, a flexible resin plate includes, from top to bottom, a protective layer 1, an anti-stick layer 2, a photosensitive elastomer 3, an adhesive layer 4, and a support 5.

[0061] (1) Photosensitive elastomer components: A is styrene-butadiene-styrene triblock copolymer D1102 (SBS), KETEN High Performance Polymers Co., Ltd., 700 parts.

[0062] Liquid plasticizer B is cyclohexane-1,2-dicarboxylic acid diisononyl ester, BASF, 100 parts.

[0063] Crosslinking monomer C is 1,6-hexanediol diacrylate (HDDA), Tianjin Tianjiao Chemical Co., Ltd., 100 parts; 1,6-hexanediol dimethacrylate (HDDMA), Changxing Chemical Materials Co., Ltd., 25 parts.

[0064] Photoinitiator D is OXE-01, Zhejiang Yangfan New Material Co., Ltd., 50 parts; Antioxidant E is β-(3,5-di-tert-butyl-4-hydroxyphenyl)propionate n-octadecyl alcohol ester (commonly known as YFK-1076), Guangzhou Jufeng Chemical Technology Co., Ltd., 15 parts; Dye F is Red 335, BASF, 10 parts.

[0065] (2) Plate making: Same as in Example 1, except that the photosensitive elastomer components and dosage are different.

[0066] Example 8 like Figure 1 As shown, a flexible resin plate includes, from top to bottom, a protective layer 1, an anti-stick layer 2, a photosensitive elastomer 3, an adhesive layer 4, and a support 5.

[0067] (1) Components of the photosensitive elastomer composition: A is styrene-butadiene-styrene triblock copolymer D1102 (SBS), KETEN High Performance Polymer Co., Ltd., 500 parts.

[0068] Liquid plasticizer B is cyclohexane-1,2-dicarboxylic acid diisononyl ester, BASF, 250 parts.

[0069] Crosslinking monomer C is 1,6-hexanediol diacrylate (HDDA), Tianjin Tianjiao Chemical Co., Ltd., 160 parts; 1,6-hexanediol dimethacrylate (HDDMA), Changxing Chemical Materials Co., Ltd., 40 parts.

[0070] Photoinitiator D is OXE-02, BASF, 35 parts; Antioxidant E is β-(3,5-di-tert-butyl-4-hydroxyphenyl)propionate n-octadecyl alcohol ester (commonly known as YFK-1076), Guangzhou Jufeng Chemical Technology Co., Ltd., 10 parts; Dye F is Red 335, BASF, 5 parts.

[0071] (2) Plate making: Same as in Example 1, except that the photosensitive elastomer components and dosage are different.

[0072] Compare with Example 1 like Figure 1 As shown, a flexible resin plate includes, from top to bottom, a protective layer 1, an anti-stick layer 2, a photosensitive elastomer 3, an adhesive layer 4, and a support 5.

[0073] (1) Components of the photosensitive elastomer composition: A is styrene-isoprene-styrene triblock copolymer D1161 (SIS), KETEN High Performance Polymers Co., Ltd., 500 parts.

[0074] Liquid plasticizer B is naphthenic oil KN4006, produced by Jinan Hengcheng New Materials Co., Ltd., 300 parts.

[0075] Crosslinking monomer C is 1,6-hexanediol diacrylate (HDDA), Tianjin Tianjiao Chemical Co., Ltd., 100 parts; 1,6-hexanediol dimethacrylate (HDDMA), Changxing Chemical Materials Co., Ltd., 25 parts.

[0076] Photoinitiator D is 2-methyl-1-(4-methylthiophenyl)-2-morpholino-1-propanone (photosensitizer 907), Guangzhou Jufeng Chemical Technology Co., Ltd., 50 parts; Antioxidant E is β-(3,5-di-tert-butyl-4-hydroxyphenyl)propionate n-octadecyl alcohol ester (commonly known as YFK-1076), Guangzhou Jufeng Chemical Technology Co., Ltd., 15 parts; Dye F is Red 335, BASF, 10 parts.

[0077] (2) Plate making: Same as in Example 1, except that the photosensitive elastomer components and dosage are different.

[0078] Compare with Example 2 like Figure 1 As shown, a flexible resin plate includes, from top to bottom, a protective layer 1, an anti-stick layer 2, a photosensitive elastomer 3, an adhesive layer 4, and a support 5.

[0079] (1) Components of the photosensitive elastomer composition: A is styrene-isoprene-styrene triblock copolymer D1161 (SIS), KETEN High Performance Polymers Co., Ltd., 700 parts.

[0080] Liquid plasticizer B is naphthenic oil KN4006, manufactured by Jinan Hengcheng New Materials Co., Ltd., 238.5 parts.

[0081] Crosslinking monomer C is 1,6-hexanediol diacrylate (HDDA), Tianjin Tianjiao Chemical Co., Ltd., 40 parts; 1,6-hexanediol dimethacrylate (HDDMA), Changxing Chemical Materials Co., Ltd., 10 parts.

[0082] Photoinitiator D is 2-methyl-1-(4-methylthiophenyl)-2-morpholino-1-propanone (photosensitizer 907), Guangzhou Jufeng Chemical Technology Co., Ltd., 10 parts; Antioxidant E is β-(3,5-di-tert-butyl-4-hydroxyphenyl)propionate n-octadecyl alcohol ester (commonly known as YFK-1076), Guangzhou Jufeng Chemical Technology Co., Ltd., 1 part; Dye F is Red 335, BASF, 0.5 parts.

[0083] (2) Plate making: Same as in Example 1, except that the photosensitive elastomer components and dosage are different.

[0084] Compare with Example 3 like Figure 1 As shown, a flexible resin plate includes, from top to bottom, a protective layer 1, an anti-stick layer 2, a photosensitive elastomer 3, an adhesive layer 4, and a support 5.

[0085] (1) Components of the photosensitive elastomer composition: A is styrene-isoprene-styrene triblock copolymer D1161 (SIS), KETEN High Performance Polymers Co., Ltd., 700 parts.

[0086] Liquid plasticizer B is naphthenic oil KN4006, produced by Jinan Hengcheng New Materials Co., Ltd., 100 parts.

[0087] Crosslinking monomer C is 1,6-hexanediol diacrylate (HDDA), Tianjin Tianjiao Chemical Co., Ltd., 100 parts; 1,6-hexanediol dimethacrylate (HDDMA), Changxing Chemical Materials Co., Ltd., 25 parts.

[0088] Photoinitiator D is 2-methyl-1-(4-methylthiophenyl)-2-morpholino-1-propanone (photosensitizer 907), Guangzhou Jufeng Chemical Technology Co., Ltd., 50 parts; Antioxidant E is β-(3,5-di-tert-butyl-4-hydroxyphenyl)propionate n-octadecyl alcohol ester (commonly known as YFK-1076), Guangzhou Jufeng Chemical Technology Co., Ltd., 15 parts; Dye F is Red 335, BASF, 10 parts.

[0089] (2) Plate making: Same as in Example 1, except that the photosensitive elastomer components and dosage are different.

[0090] Compare with Example 4 like Figure 1 As shown, a flexible resin plate includes, from top to bottom, a protective layer 1, an anti-stick layer 2, a photosensitive elastomer 3, an adhesive layer 4, and a support 5.

[0091] (1) Components of the photosensitive elastomer composition: A is styrene-isoprene-styrene triblock copolymer D1161 (SIS), KETEN High Performance Polymers Co., Ltd., 500 parts.

[0092] Liquid plasticizer B is naphthenic oil KN4006, manufactured by Jinan Hengcheng New Materials Co., Ltd., 250 parts.

[0093] Crosslinking monomer C is 1,6-hexanediol diacrylate (HDDA), Tianjin Tianjiao Chemical Co., Ltd., 160 parts; 1,6-hexanediol dimethacrylate (HDDMA), Changxing Chemical Materials Co., Ltd., 40 parts.

[0094] Photoinitiator D is 2-methyl-1-(4-methylthiophenyl)-2-morpholino-1-propanone (photosensitizer 907), Guangzhou Jufeng Chemical Technology Co., Ltd., 35 parts; Antioxidant E is β-(3,5-di-tert-butyl-4-hydroxyphenyl)propionate n-octadecyl alcohol ester (commonly known as YFK-1076), Guangzhou Jufeng Chemical Technology Co., Ltd., 10 parts; Dye F is Red 335, BASF, 5 parts.

[0095] (2) Plate making: Same as in Example 1, except that the photosensitive elastomer components and dosage are different.

[0096] Compare with Example 5 like Figure 1 As shown, a flexible resin plate includes, from top to bottom, a protective layer 1, an anti-stick layer 2, a photosensitive elastomer 3, an adhesive layer 4, and a support 5.

[0097] (1) Components of the photosensitive elastomer composition: A is styrene-butadiene-styrene triblock copolymer D1102 (SBS), KETEN High Performance Polymers Co., Ltd., 500 parts.

[0098] Liquid plasticizer B is naphthenic oil KN4006, produced by Jinan Hengcheng New Materials Co., Ltd., 300 parts.

[0099] Crosslinking monomer C is 1,6-hexanediol diacrylate (HDDA), Tianjin Tianjiao Chemical Co., Ltd., 100 parts; 1,6-hexanediol dimethacrylate (HDDMA), Changxing Chemical Materials Co., Ltd., 25 parts.

[0100] Photoinitiator D is 2-methyl-1-(4-methylthiophenyl)-2-morpholino-1-propanone (photosensitizer 907), Guangzhou Jufeng Chemical Technology Co., Ltd., 50 parts; Antioxidant E is β-(3,5-di-tert-butyl-4-hydroxyphenyl)propionate n-octadecyl alcohol ester (commonly known as YFK-1076), Guangzhou Jufeng Chemical Technology Co., Ltd., 15 parts; Dye F is Red 335, BASF, 10 parts.

[0101] (2) Plate making: Same as in Example 1, except that the photosensitive elastomer components and dosage are different.

[0102] Compare with Example 6 like Figure 1As shown, a flexible resin plate includes, from top to bottom, a protective layer 1, an anti-stick layer 2, a photosensitive elastomer 3, an adhesive layer 4, and a support 5.

[0103] (1) Components of the photosensitive elastomer composition: A is styrene-butadiene-styrene triblock copolymer D1102 (SBS), KETEN High Performance Polymers Co., Ltd., 700 parts.

[0104] Liquid plasticizer B is naphthenic oil KN4006, manufactured by Jinan Hengcheng New Materials Co., Ltd., 238.5 parts.

[0105] Crosslinking monomer C is 1,6-hexanediol diacrylate (HDDA), Tianjin Tianjiao Chemical Co., Ltd., 40 parts; 1,6-hexanediol dimethacrylate (HDDMA), Changxing Chemical Materials Co., Ltd., 10 parts.

[0106] Photoinitiator D is 2-methyl-1-(4-methylthiophenyl)-2-morpholino-1-propanone (photosensitizer 907), Guangzhou Jufeng Chemical Technology Co., Ltd., 10 parts; Antioxidant E is β-(3,5-di-tert-butyl-4-hydroxyphenyl)propionate n-octadecyl alcohol ester (commonly known as YFK-1076), Guangzhou Jufeng Chemical Technology Co., Ltd., 1 part; Dye F is Red 335, BASF, 0.5 parts.

[0107] (2) Plate making: Same as in Example 1, except that the photosensitive elastomer components and dosage are different.

[0108] Compare with Example 7 like Figure 1 As shown, a flexible resin plate includes, from top to bottom, a protective layer 1, an anti-stick layer 2, a photosensitive elastomer 3, an adhesive layer 4, and a support 5.

[0109] (1) Components of the photosensitive elastomer composition: A is styrene-butadiene-styrene triblock copolymer D1102 (SBS), KETEN High Performance Polymers Co., Ltd., 700 parts.

[0110] Liquid plasticizer B is naphthenic oil KN4006, produced by Jinan Hengcheng New Materials Co., Ltd., 100 parts.

[0111] Crosslinking monomer C is 1,6-hexanediol diacrylate (HDDA), Tianjin Tianjiao Chemical Co., Ltd., 100 parts; 1,6-hexanediol dimethacrylate (HDDMA), Changxing Chemical Materials Co., Ltd., 25 parts.

[0112] Photoinitiator D is 2-methyl-1-(4-methylthiophenyl)-2-morpholino-1-propanone (photosensitizer 907), Guangzhou Jufeng Chemical Technology Co., Ltd., 50 parts; Antioxidant E is β-(3,5-di-tert-butyl-4-hydroxyphenyl)propionate n-octadecyl alcohol ester (commonly known as YFK-1076), Guangzhou Jufeng Chemical Technology Co., Ltd., 15 parts; Dye F is Red 335, BASF, 10 parts.

[0113] (2) Plate making: Same as in Example 1, except that the photosensitive elastomer components and dosage are different.

[0114] Compare with Example 8 like Figure 1 As shown, a flexible resin plate includes, from top to bottom, a protective layer 1, an anti-stick layer 2, a photosensitive elastomer 3, an adhesive layer 4, and a support 5.

[0115] (1) Components of the photosensitive elastomer composition: A is styrene-butadiene-styrene triblock copolymer D1102 (SBS), KETEN High Performance Polymers Co., Ltd., 500 parts.

[0116] Liquid plasticizer B is naphthenic oil KN4006, manufactured by Jinan Hengcheng New Materials Co., Ltd., 250 parts.

[0117] Crosslinking monomer C is 1,6-hexanediol diacrylate (HDDA), Tianjin Tianjiao Chemical Co., Ltd., 160 parts; 1,6-hexanediol dimethacrylate (HDDMA), Changxing Chemical Materials Co., Ltd., 40 parts.

[0118] Photoinitiator D is 2-methyl-1-(4-methylthiophenyl)-2-morpholino-1-propanone (photosensitizer 907), Guangzhou Jufeng Chemical Technology Co., Ltd., 35 parts; Antioxidant E is β-(3,5-di-tert-butyl-4-hydroxyphenyl)propionate n-octadecyl alcohol ester (commonly known as YFK-1076), Guangzhou Jufeng Chemical Technology Co., Ltd., 10 parts; Dye F is Red 335, BASF, 5 parts.

[0119] (2) Plate making: Same as in Example 1, except that the photosensitive elastomer components and dosage are different.

[0120] Compare with Example 9 like Figure 1 As shown, a flexible resin plate includes, from top to bottom, a protective layer 1, an anti-stick layer 2, a photosensitive elastomer 3, an adhesive layer 4, and a support 5.

[0121] (1) Components of the photosensitive elastomer composition: A is styrene-isoprene-styrene triblock copolymer D1161 (SIS), KETEN High Performance Polymers Co., Ltd., 500 parts.

[0122] Liquid plasticizer B is cyclohexane-1,2-dicarboxylic acid diisononyl ester, BASF, 300 parts.

[0123] Crosslinking monomer C is 1,6-hexanediol diacrylate (HDDA), Tianjin Tianjiao Chemical Co., Ltd., 100 parts; 1,6-hexanediol dimethacrylate (HDDMA), Changxing Chemical Materials Co., Ltd., 25 parts.

[0124] Photoinitiator D is 2-methyl-1-(4-methylthiophenyl)-2-morpholino-1-propanone (photosensitizer 907), Guangzhou Jufeng Chemical Technology Co., Ltd., 50 parts; Antioxidant E is β-(3,5-di-tert-butyl-4-hydroxyphenyl)propionate n-octadecyl alcohol ester (commonly known as YFK-1076), Guangzhou Jufeng Chemical Technology Co., Ltd., 15 parts; Dye F is Red 335, BASF, 10 parts.

[0125] (2) Plate making: Same as in Example 1, except that the photosensitive elastomer components and dosage are different.

[0126] Compare with Example 10 like Figure 1 As shown, a flexible resin plate includes, from top to bottom, a protective layer 1, an anti-stick layer 2, a photosensitive elastomer 3, an adhesive layer 4, and a support 5.

[0127] (1) Components of the photosensitive elastomer composition: A is styrene-butadiene-styrene triblock copolymer D1102 (SBS), KETEN High Performance Polymers Co., Ltd., 500 parts.

[0128] Liquid plasticizer B is cyclohexane-1,2-dicarboxylic acid diisononyl ester, BASF, 300 parts.

[0129] Crosslinking monomer C is 1,6-hexanediol diacrylate (HDDA), Tianjin Tianjiao Chemical Co., Ltd., 100 parts; 1,6-hexanediol dimethacrylate (HDDMA), Changxing Chemical Materials Co., Ltd., 25 parts.

[0130] Photoinitiator D is 2-methyl-1-(4-methylthiophenyl)-2-morpholino-1-propanone (photosensitizer 907), Guangzhou Jufeng Chemical Technology Co., Ltd., 50 parts; Antioxidant E is β-(3,5-di-tert-butyl-4-hydroxyphenyl)propionate n-octadecyl alcohol ester (commonly known as YFK-1076), Guangzhou Jufeng Chemical Technology Co., Ltd., 15 parts; Dye F is Red 335, BASF, 10 parts.

[0131] (2) Plate making: Same as in Example 1, except that the photosensitive elastomer components and dosage are different.

[0132] Compare with Example 11 like Figure 1 As shown, a flexible resin plate includes, from top to bottom, a protective layer 1, an anti-stick layer 2, a photosensitive elastomer 3, an adhesive layer 4, and a support 5.

[0133] (1) Components of the photosensitive elastomer composition: A is styrene-isoprene-styrene triblock copolymer D1161 (SIS), KETEN High Performance Polymers Co., Ltd., 700 parts.

[0134] Liquid plasticizer B is naphthenic oil KN4006, manufactured by Jinan Hengcheng New Materials Co., Ltd., 238.5 parts.

[0135] Crosslinking monomer C is 1,6-hexanediol diacrylate (HDDA), Tianjin Tianjiao Chemical Co., Ltd., 40 parts; 1,6-hexanediol dimethacrylate (HDDMA), Changxing Chemical Materials Co., Ltd., 10 parts.

[0136] Photoinitiator D is OXE-01, Zhejiang Yangfan New Material Co., Ltd., 10 parts; Antioxidant E is β-(3,5-di-tert-butyl-4-hydroxyphenyl)propionate n-octadecyl alcohol ester (commonly known as YFK-1076), Guangzhou Jufeng Chemical Technology Co., Ltd., 1 part; Dye F is Red 335, BASF, 0.5 parts.

[0137] (2) Plate making: Same as in Example 1, except that the photosensitive elastomer components and dosage are different.

[0138] Compare with Example 12 like Figure 1 As shown, a flexible resin plate includes, from top to bottom, a protective layer 1, an anti-stick layer 2, a photosensitive elastomer 3, an adhesive layer 4, and a support 5.

[0139] (1) Components of the photosensitive elastomer composition: A is styrene-butadiene-styrene triblock copolymer D1102 (SBS), KETEN High Performance Polymers Co., Ltd., 700 parts.

[0140] Liquid plasticizer B is naphthenic oil KN4006, manufactured by Jinan Hengcheng New Materials Co., Ltd., 238.5 parts.

[0141] Crosslinking monomer C is 1,6-hexanediol diacrylate (HDDA), Tianjin Tianjiao Chemical Co., Ltd., 40 parts; 1,6-hexanediol dimethacrylate (HDDMA), Changxing Chemical Materials Co., Ltd., 10 parts.

[0142] Photoinitiator D is OXE-02, BASF, 10 parts; Antioxidant E is β-(3,5-di-tert-butyl-4-hydroxyphenyl)propionate n-octadecyl alcohol ester (commonly known as YFK-1076), Guangzhou Jufeng Chemical Technology Co., Ltd., 1 part; Dye F is Red 335, BASF, 0.5 parts.

[0143] (2) Plate making: Same as in Example 1, except that the photosensitive elastomer components and dosage are different.

[0144] This invention relates to a method for preparing and testing smooth solid surface samples of flexible resin plates. Plate exposure: Use the Gulongyan Concept 305 ECDLF flexographic plate making machine to back expose the prepared flexible resin plate for 25 seconds, remove the PET protective film, cover it with film (containing graphic information such as dots, lines, text, and solids), and vacuum exposure for 15 minutes. Plate development: After exposure, the plate is rinsed with environmentally friendly developer for 5 minutes using the Gulongyan Concept305DW flexographic plate washer, dried at 60℃ for more than 2 hours, then bonded under a 280nm UAC light source with a 5cm spacing for 5 minutes, and finally post-treated under a 365nm UVA ultraviolet light source for 5 minutes to obtain a flexographic resin plate printing sample.

[0145] On-site surface testing of the sample: 1. Observe the solid surface morphology of the flexible resin printing plate sample using a 60x magnifying glass. 2. Visually inspect the solid surface of the flexible resin printing plate sample to determine if it is smooth or has an orange peel texture. The actual surface test results of the flexible resin printing plates of the examples and control examples are shown in Table 1.

[0146] Table 1. Solid surface inspection results of flexible resin printing plates in the examples and control examples As can be seen from Table 1, the flexible resin plate prepared using the present invention can form a solid, smooth surface.

[0147] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. It should be noted that for those skilled in the art and any person skilled in the art, any equivalent substitutions or changes made to the technical solution and inventive concept of the present invention without departing from the overall concept of the present invention, as well as any changes and improvements made, should also be considered within the scope of protection of the present invention.

Claims

1. A photosensitive elastomer composition for a flexible resin plate, characterized by: The photosensitive elastomer composition contains: (A) a triblock polymer of a-b-a structure, wherein a is a monoaryl olefin monomer, and b is a diene monomer; (B) a liquid isononyl cyclohexane-1,2-dicarboxylate plasticizing oil, (C) a monomer containing at least one unsaturated double bond functional group, (D) an oxime ester photoinitiator, (E) an antioxidant, (F) a dye.

2. The photosensitive elastomer composition for a flexible resin plate according to claim 1, characterized by: The (A) triblock polymer of a-b-a structure accounts for 50-70% of the total mass of the photosensitive elastomer composition; the (B) liquid isononyl cyclohexane-1,2-dicarboxylate plasticizing oil accounts for 10-30% of the total mass of the photosensitive elastomer composition; the (C) monomer containing at least one unsaturated double bond functional group accounts for 5-20% of the total mass of the elastomer composition; the (D) oxime ester photoinitiator accounts for 1-5% of the total mass of the photosensitive elastomer composition; the (E) antioxidant accounts for 0.1-1.5% of the total mass of the photosensitive elastomer composition; and the (F) dye accounts for 0.05-1% of the total mass of the photosensitive elastomer composition.

3. The photosensitive elastomer composition for a flexible resin plate according to claim 1, characterized in that: The (A) triblock polymer of a-b-a structure is a styrene-butadiene-styrene triblock copolymer (SBS), a styrene-isoprene-styrene block copolymer (SIS), or a partially hydrogenated SEBS; The (C) is an unsaturated acrylate monomer containing at least one unsaturated double bond; The (D) oxime ester photoinitiator is OXE-01 or OXE-02 The dye in the (F) is a cyanine dye having an absorption wavelength range of 300-480 nm.

4. The photosensitive elastomer composition for a flexible resin plate according to claim 3, characterized in that: The (C) unsaturated acrylate is at least one of 1,6-hexanediol diacrylate, dipropylene glycol diacrylate, trihydroxymethylpropane trimethacrylate, trihydroxymethylpropane triacrylate, 1,6-hexanediol dimethacrylate, tripropylene glycol diacrylate, triethylene glycol diacrylate, tetraethylene glycol di(meth)acrylate, pentaethylene glycol di(meth)acrylate, neopentyl glycol diacrylate, propoxylated neopentyl glycol diacrylate, 2-phenoxyethyl acrylate, 1,9-nonanediol di(meth)acrylate, 2-methyl-1,3-propanediol diacrylate, 2,2-bis(p-hydroxypropyl) acrylic di(meth)acrylate, 4-morpholine acrylate, 2-N-morpholinomethyl acrylate, isobornyl acrylate, and isobornyl methacrylate; The (F) dye is at least one of Red 335, Red Base 543, Neozapon 346, Solvent Red 52, rhodamine blue, methyl violet, and ethyl violet.

5. A flexible resin plate characterized by: The flexible resin plate comprises a protective layer (1), an anti-sticking layer (2), a photosensitive elastomer (3), an adhesive layer (4) and a support (5) from top to bottom, wherein the photosensitive elastomer is formed by high-temperature heating, melting, mixing and hot pressing of the photosensitive elastomer composition according to any one of claims 1-4.

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