CN101705621A - Water-based PU matte surface finishing agent for synthetic leather - Google Patents

Water-based PU matte surface finishing agent for synthetic leather Download PDF

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Publication number
CN101705621A
CN101705621A CN200910212603A CN200910212603A CN101705621A CN 101705621 A CN101705621 A CN 101705621A CN 200910212603 A CN200910212603 A CN 200910212603A CN 200910212603 A CN200910212603 A CN 200910212603A CN 101705621 A CN101705621 A CN 101705621A
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China
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parts
water
matte
finishing agent
synthetic leather
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CN200910212603A
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Chinese (zh)
Inventor
时云刚
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Jiangsu Baoze Polymer Materials Co Ltd
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Jiangsu Baoze Polymer Materials Co Ltd
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Priority to CN200910212603A priority Critical patent/CN101705621A/en
Publication of CN101705621A publication Critical patent/CN101705621A/en
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Abstract

The invention discloses a water-based PU matte surface finishing agent for synthetic leather, which comprises the following materials in parts by weight: 30 to 40 parts of water-based polyurethane resin, 45 to 55 parts of water, 4 to 10 parts of modified organic silicon polymer, 0.5 to 1.5 parts of organic silicon flatting agent, 1 to 2 parts of organic silicon foam killer, 1 to 2 parts of water-based polyurethane thickening agent, and 3 to 5 parts of modified organic silicon matting agent. For the water-based PU matte surface finishing agent, the mixture ratio of the components is scientific and reasonable, and the components are coordinated with each other and act together. The matte surface finishing agent has the advantages of good film reforming property, firm bonding, solvent resistance, hydrolysis resistance and thermosenescence resistance of coating. The finished product made of the synthetic leather, the surface of which is treated by the matte surface finishing agent, has the advantages that the original effect of the leather surface is not affected, particularly the combined application of the modified organic silicon matting agent and the polyurethane resin ensures that the treated leather surface has unique matte surface effect, and the synthetic leather has good comprehensive effects of good air permeability, good hand feel, water resistance, cohesiveness and the like.

Description

Water-based PU matte surface finishing agent for synthetic leather
Technical field
The present invention relates to a kind of water-based PU matte surface finishing agent for synthetic leather agent, particularly a kind of water-based PU matte surface finishing agent for synthetic leather that is applied to synthetic leather rear section technology.
Background technology
Along with the raising of people's life water product, people pursue high-quality daily product gradually, and the demand of leather products is more and more, and along with the enhancing of animal protection consciousness, animal corium can not satisfy people's demand.At present, the synthetic leather product becomes following popular trend gradually, synthetic leather has been widely used in products such as producing case and bag, clothes, footwear, the base fabric of PU leather is the good canvas PU material of tensile strength, except can being coated in base fabric top, in the middle of base fabric can also being included in, make it outward appearance and can't see the existence of base fabric, it is good that PU leather has physical property, and anti-complications, pliability is good, tensile strength is big, have gas permeability, so PU removes from office and is widely used in the lining of footwear or the position that case and bag bear weight.After the PU leather is synthetic, often need handle and the leather that obtain having the different performance characteristics with some surface conditioning agents, matte surface finishing agent is a surface conditioning agent commonly used in the synthetic leather, and synthetic leather can produce tangible atomized surface effect after matte surface finishing agent is handled, be subjected to people's extensive favor.
At present, the use for synthetic leather matte surface finishing agent of selling on the market is generally the place's agent of solvent-borne type table, and it has the following disadvantages:
1, the organic solvent that contains in the solvent-borne type matte surface finishing agent can cause the bottom dissolving of synthetic leather or artificial leather, and synthetic leather feel after treatment is bad;
2, not only cost is higher, smell is bigger for the organic solvent that contains in the solvent-borne type matte surface finishing agent, easy contaminated environment, and have potential safety hazards such as inflammable, explosive;
3, the synthetic leather product for preparing of solvent-borne type matte surface finishing agent, resultant effects such as its viscosity, stability, hand sense of touch are not good.
Summary of the invention
Goal of the invention: technical problem to be solved by this invention is to overcome the deficiency that the solvent-borne type matte surface finishing agent exists, and provides a kind of and anti-ly opens, resultant effects such as modulus, elongation and adhesiveness are good, are the water-based PU matte surface finishing agent for synthetic leather of solvent with water.
Technical scheme: for solving above technical problem, the present invention takes following technical scheme:
A kind of water-based PU matte surface finishing agent for synthetic leather, it is made up of the raw material of following parts by weight: 30~40 parts of waterborne polyurethane resins, 45~55 parts in water, 4~10 parts of silicon modified organic polymers, 0.5~1.5 part of organosilicon levelling agent, 1~2 part of silicone defoaming agent, 1~2 part of aqueous polyurethane thickener, 3~5 parts of modified organic silicon flatting silicas.
As preferred version, water-based PU matte surface finishing agent for synthetic leather of the present invention, it is made up of the raw material of following parts by weight: 31~37 parts of waterborne polyurethane resins, 45~55 parts in water, 4~10 parts of silicon modified organic polymers, 0.5~1.5 part of organosilicon levelling agent, 1~2 part of silicone defoaming agent, 1~2 part of aqueous polyurethane thickener, 3~5 parts of modified organic silicon flatting silicas.
Wherein waterborne polyurethane resin is the matrix resin of water-based PU matte surface finishing agent for synthetic leather of the present invention, described crosslinking polyurethane resin, film forming is transparent product body shape, resilience is good, and the anti-tortuosity that tool is good, cold resistance, soft in the film forming, good dispersion, water proof and wearable are wiped, and rate of drying reaches good resistance to blocking, the characteristics of high glaze soon.
Wherein said silicon modified organic polymer can be organic silicon-acrylate copolymer emulsion, modifying epoxy resin by organosilicon, organosilicon modified polyether, organic silicon modified polyurethane or organic-silicon-modified fluorocarbon polymer.Silicon modified organic polymer is meant introduces organic polymer to improve its performance with the organosilicon strand, can make full use of organosilyl various excellent properties like this, weatherability, resistance to soiling and high-and low-temperature resistance as excellence, hydrophobicity is strong, air permeability and good etc., organosilicon deficiency on the high side can be overcome again, the characteristics that the polymers for general use consumption is big, cost is low can be brought into play again simultaneously.
The preferred nonionic polyurethane polymer of aqueous polyurethane thickener wherein, its thickening efficiency height, it can make waterborne polyurethane resin reach certain viscosity, the standard that it is suited the requirements, viscosity in moderate shear and the high shearing scope is provided, and has excellent levelling, flowability.
Wherein the water as retarder thinner is common running water, has avoided the use of organic solvents such as dimethyl formamide, butanone, environmental protection and saving cost.
The preparation method of water-based PU matte surface finishing agent for synthetic leather provided by the invention may further comprise the steps:
1. choose polyurethane resin, silicon modified organic polymer, silicone defoaming agent, organosilicon levelling agent and water in proportion, mix, stir;
2. get modified organic silicon silicon flatting silica and add step while stirring and 1. react the mixture of gained and stirred 60 minutes, 200 orders filter;
3. get step and 2. filter the mixture that obtains, add aqueous polyurethane thickener in proportion, stir and promptly get described water-based PU matte surface finishing agent for synthetic leather.
The used water of above preparation method can be common running water, and aqueous polyurethane thickener can be the nonionic polyurethane polymer.
Beneficial effect: water-based PU matte surface finishing agent provided by the invention is compared with solvent-borne type PU matte surface finishing agent in the prior art has following advantage:
1, the used solvent of matte surface finishing agent provided by the invention is a water, have do not fire, safety, environmental protection, cost-effective performance.
2, matte surface finishing agent provided by the invention, show through experimental study, each set of dispense of forming matte surface finishing agent is than scientific and reasonable, coordination, acting in conjunction mutually between component, matte surface finishing agent have good film-forming property, bonding firmly, the anti-solvent of coating, cold-resistant, hydrolysis, heat-proof aging advantage, handle the finished product of making behind the synthetic leather surface with matte surface finishing agent provided by the invention, having does not influence that its leather surface is former to produce effect, and has unique atomized surface effect; Especially the use in conjunction of modification modified organic silicon flatting silica and polyurethane resin has good cloudy surface after leather surface is handled, and the synthetic leather good permeability, and resultant effects such as feel, waterproof, bonding are good.
3, this water-based PU matte surface finishing agent is used on existing synthetic leather production line, be need not to change the production technology and the equipment of existing synthetic leather, can not increase the synthetic leather production cost of products.
4, the preparation method of water-based PU matte surface finishing agent provided by the invention is workable, production efficiency is high, cost is low, environmental protection, can realize industrialized production.
The specific embodiment
Below in conjunction with specific embodiment, further illustrate the present invention, should understand these embodiment only is used to the present invention is described and is not used in and limit the scope of the invention, after having read the present invention, those skilled in the art all fall within the application's claims institute restricted portion to the modification of the various equivalent form of values of the present invention.
Embodiment 1
1, water-based PU matte surface finishing agent for synthetic leather is made up of the raw material of following parts by weight: 100 parts of waterborne polyurethane resins, 150 parts in water, 20 parts of silicon modified organic polymers, 3 parts of organosilicon levelling agents, 4 parts of silicone defoaming agents, 5 parts of aqueous polyurethane thickeners, 10 parts of modified organic silicon flatting silicas.
2, the preparation method of water-based PU matte surface finishing agent for synthetic leather of the present invention is as follows:
1. choose 150 parts of 100 parts of waterborne polyurethane resins, 20 parts of silicon modified organic polymers, 4 parts of silicone defoaming agents, 3 parts of organosilicon levelling agents and ordinary tap water in proportion, mix, stir;
2. get the modified organic silicon flatting silica and add step while stirring and 1. react the mixture of gained and stirred 60 minutes, 200 orders filter;
3. get step and 2. filter the mixture that obtains, add 5 parts of aqueous polyurethane thickeners in proportion, stir and promptly get described water-based PU matte surface finishing agent for synthetic leather.
3, experiment detects the technical performance index by the 2 PU matte surface finishing agents that prepare, and concrete experimental result is as shown in table 1:
The technical performance testing result of table 1 PU matte surface finishing agent
Project Detect index Testing result
PH value ??6.5~8 ??6.8
Outward appearance Little yellow thick liquid Little yellow thick liquid
Stability There are not precipitation, nondiscolouring in 6 months There are not precipitation, nondiscolouring in 6 months
Viscosity (cps) ??300~500 ??400
Solid content (%) ??18±1 ??18
Embodiment 2
1, water-based PU matte surface finishing agent for synthetic leather is made up of the raw material of following parts by weight: 93 parts of waterborne polyurethane resins, 154 parts in water, 22 parts of silicon modified organic polymers, 2.5 parts of organosilicon levelling agents, 4 parts of silicone defoaming agents, 5 parts of aqueous polyurethane thickeners, 9.5 parts of modified organic silicon flatting silicas.
2, the preparation method of water-based PU matte surface finishing agent for synthetic leather of the present invention is as follows:
1. choose 154 parts of 93 parts of waterborne polyurethane resins, 22 parts of silicon modified organic polymers, 4 parts of silicone defoaming agents, 2.5 parts of organosilicon levelling agents and ordinary tap water in proportion, mix, stir;
2. get 9.5 parts on modified organic silicon flatting silica limit and stir the limit and add step and 1. react the mixture of gained and stirred 60 minutes, 200 orders filter;
3. get step and 2. filter the mixture that obtains, add 5 parts of aqueous polyurethane thickeners in proportion, stir and promptly get described water-based PU matte surface finishing agent for synthetic leather.
3, experiment detects the technical performance index by the 2 PU matte surface finishing agents that prepare, and concrete experimental result is as shown in table 2:
The technical performance testing result of table 2 PU matte surface finishing agent
Project Detect index Testing result
PH value ??6.5~8 ??7.0
Outward appearance Little yellow thick liquid Little yellow thick liquid
Stability There are not precipitation, nondiscolouring in 6 months There are not precipitation, nondiscolouring in 6 months
Viscosity (cps) ??300~500 ??340
Solid content (%) ??18±1 ??17.3
Embodiment 3
1, water-based PU matte surface finishing agent for synthetic leather is made up of the raw material of following parts by weight: 87 parts of waterborne polyurethane resins, 121 parts in water, 14.5 parts of silicon modified organic polymers, 3 parts of organosilicon levelling agents, 4 parts of silicone defoaming agents, 4.5 parts of aqueous polyurethane thickeners, 8.5 parts of modified organic silicon flatting silicas.
2, the preparation method of water-based PU matte surface finishing agent for synthetic leather of the present invention is as follows:
1. choose 121 parts of 87 parts of waterborne polyurethane resins, 14.5 parts of silicon modified organic polymers, 4 parts of silicone defoaming agents, 3 parts of organosilicon levelling agents and ordinary tap water in proportion, mix, stir;
2. get 8.5 parts of modified organic silicon flatting silicas and add step while stirring and 1. react the mixture of gained and stirred 60 minutes, 200 orders filter;
3. get step and 2. filter the mixture that obtains, add 4.5 parts of aqueous polyurethane thickeners in proportion, stir and promptly get described water-based PU matte surface finishing agent for synthetic leather.
3, experiment detects the technical performance index by the 2 PU matte surface finishing agents that prepare, and concrete experimental result is as shown in table 3:
The technical performance testing result of table 3 PU matte surface finishing agent
Project Detect index Testing result
PH value ??6.5~8 ??7.2
Outward appearance Little yellow thick liquid Little yellow thick liquid
Stability There are not precipitation, nondiscolouring in 6 months There are not precipitation, nondiscolouring in 6 months
Viscosity (cps) ??300~500 ??450
Solid content (%) ??18±1 ??18.5
Embodiment 4
1, water-based PU matte surface finishing agent for synthetic leather is made up of the raw material of following parts by weight: 80 parts of waterborne polyurethane resins, 124 parts in water, 18 parts of silicon modified organic polymers, 3 parts of organosilicon levelling agents, 3.5 parts of silicone defoaming agents, aqueous polyurethane thickener 4.5,8 parts of modified organic silicon flatting silicas.
2, the preparation method of water-based PU matte surface finishing agent for synthetic leather of the present invention is as follows:
1. choose 124 parts of 80 parts of waterborne polyurethane resins, 18 parts of silicon modified organic polymers, 3.5 parts of silicone defoaming agents, 3 parts of organosilicon levelling agents and ordinary tap water in proportion, mix, stir;
2. get 8 parts of modified organic silicon flatting silicas and add step while stirring and 1. react the mixture of gained and stirred 60 minutes, 200 orders filter;
3. get step and 2. filter the mixture that obtains, add 4.5 parts of aqueous polyurethane thickeners in proportion, stir and promptly get described water-based PU matte surface finishing agent for synthetic leather.
3, experiment detects the technical performance index by the 2 PU matte surface finishing agents that prepare, and concrete experimental result is as shown in table 4:
The technical performance testing result of table 4 PU matte surface finishing agent
Project Detect index Testing result
PH value ??6.5~8 ??7.4
Outward appearance Little yellow thick liquid Little yellow thick liquid
Stability There are not precipitation, nondiscolouring in 6 months There are not precipitation, nondiscolouring in 6 months
Viscosity (cps) ??300~500 ??350
Solid content (%) ??18±1 ??17.6
Embodiment 5
1, water-based PU matte surface finishing agent for synthetic leather is made up of the raw material of following parts by weight: 70 parts of waterborne polyurethane resins, 95 parts in water, 10.5 parts of silicon modified organic polymers, 2 parts of organosilicon levelling agents, 3 parts of silicone defoaming agents, 3.5 parts of aqueous polyurethane thickeners, 6.5 parts of modified organic silicon flatting silicas.
2, the preparation method of water-based PU matte surface finishing agent for synthetic leather of the present invention is as follows:
1. choose 95 parts of 70 parts of waterborne polyurethane resins, 10.5 parts of silicon modified organic polymers, 3 parts of silicone defoaming agents, 2 parts of organosilicon levelling agents and ordinary tap water in proportion, mix, stir;
2. get 6.5 parts of modified organic silicon flatting silicas and add step while stirring and 1. react the mixture of gained and stirred 60 minutes, 200 orders filter;
3. get step and 2. filter the mixture that obtains, add 3.5 parts of aqueous polyurethane thickeners in proportion, stir and promptly get described water-based PU matte surface finishing agent for synthetic leather.
3, experiment detects the technical performance index by the 2 PU matte surface finishing agents that prepare, and concrete experimental result is as shown in table 3:
The technical performance testing result of table 5 PU matte surface finishing agent
Project Detect index Testing result
PH value ??6.5~8 ??7.0
Outward appearance Little yellow thick liquid Little yellow thick liquid
Stability There are not precipitation, nondiscolouring in 6 months There are not precipitation, nondiscolouring in 6 months
Viscosity (cps) ??300~500 ??420
Solid content (%) ??18±1 ??18.2
The present invention has overcome the shortcoming of solvent-borne type PU matte surface finishing agent, and its adhesive force is good, feel and effective, and it is good to have atomized surface effect with the synthetic leather product of its production, and color developing, moisture-penetrable ventilated property are good.In addition, water-based PU matte surface finishing agent also has advantages such as baking temperature is low, production cost is low, and the organic solvent-free volatilization is beneficial to environmental protection.

Claims (5)

1. water-based PU matte surface finishing agent for synthetic leather, it is characterized in that, it is made up of the raw material of following parts by weight: 30~40 parts of waterborne polyurethane resins, 45~55 parts in water, 3~10 parts of silicon modified organic polymers, 0.5~1.5 part of organosilicon levelling agent, 1~2 part of silicone defoaming agent, 1~2 part of aqueous polyurethane thickener, 3~5 parts of modified organic silicon flatting silicas.
2. water-based PU matte surface finishing agent for synthetic leather according to claim 1, it is characterized in that, it is made up of following raw materials by weight percent: 35~40 parts of waterborne polyurethane resins, 50~55 parts in water, 5~8 parts of silicon modified organic polymers, 0.5~1.5 part of organosilicon levelling agent, 1~2 part of silicone defoaming agent, 1~2 part of aqueous polyurethane thickener, 3~5 parts of modified organic silicon flatting silicas.
3. water-based PU matte surface finishing agent for synthetic leather according to claim 1 and 2, it is characterized in that described silicon modified organic polymer is organic silicon-acrylate copolymer emulsion, modifying epoxy resin by organosilicon, organosilicon modified polyether, organic silicon modified polyurethane or organic-silicon-modified fluorocarbon polymer.
4. water-based PU matte surface finishing agent for synthetic leather according to claim 1 and 2 is characterized in that: described aqueous polyurethane thickener is the nonionic polyurethane polymer.
5. water-based PU matte surface finishing agent for synthetic leather according to claim 1 and 2 is characterized in that: described water is running water.
CN200910212603A 2009-11-12 2009-11-12 Water-based PU matte surface finishing agent for synthetic leather Pending CN101705621A (en)

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102877308A (en) * 2012-09-11 2013-01-16 江苏宝泽高分子材料股份有限公司 Water-based PU surface passivator for artificial leather
CN103590248A (en) * 2013-11-14 2014-02-19 淮安凯悦科技开发有限公司 Waterborne skin-touch and scratch-resistant synthetic leather surface treating agent free of hand marks
CN105713503A (en) * 2014-12-22 2016-06-29 日信化学工业株式会社 Leather coating composition and leather coated therewith
CN109518476A (en) * 2018-10-18 2019-03-26 清远市齐力合成革有限公司 A kind of aqueous cloudy surface, scratch resistance, soft synthetic leather production method
CN109837755A (en) * 2018-12-18 2019-06-04 兰州科天水性高分子材料有限公司 A kind of matte skin feel treatment agent and preparation method thereof

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102877308A (en) * 2012-09-11 2013-01-16 江苏宝泽高分子材料股份有限公司 Water-based PU surface passivator for artificial leather
CN103590248A (en) * 2013-11-14 2014-02-19 淮安凯悦科技开发有限公司 Waterborne skin-touch and scratch-resistant synthetic leather surface treating agent free of hand marks
CN105713503A (en) * 2014-12-22 2016-06-29 日信化学工业株式会社 Leather coating composition and leather coated therewith
CN105713503B (en) * 2014-12-22 2019-12-10 日信化学工业株式会社 Leather coating composition and leather coated therewith
CN109518476A (en) * 2018-10-18 2019-03-26 清远市齐力合成革有限公司 A kind of aqueous cloudy surface, scratch resistance, soft synthetic leather production method
CN109837755A (en) * 2018-12-18 2019-06-04 兰州科天水性高分子材料有限公司 A kind of matte skin feel treatment agent and preparation method thereof

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Open date: 20100512