Dry type polyurethane resin for pasting gold-silver film and preparation thereof
A polyurethane resin, dry technology, applied in the field of dry polyurethane resin for shoe leather and luggage leather, can solve the problem that the film is easy to fall off, scratch and wear resistance and poor bending, and the combination of gold and silver film and dry surface layer is not good. and other problems, to achieve the effect of improving scratch and wear resistance and bending performance, and reducing surface density
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Embodiment approach 1
[0030] Raw material name Weight (unit: Kg)
[0031] PET—1 200
[0032] PET—2 700
[0033] 1,4-butanediol 110
[0034] 4,4-Diphenylmethane diisocyanate 545
[0035] Coupling agent 10
[0036] Antioxidant I-1010 2.0
[0037] UV absorber UV-328 1.0
[0038] Catalyst 0.2
[0039] N,N-Dimethylformamide 3000
[0040] Methyl ethyl ketone 700
[0041] PET-1 is a polyester polyol with a molecular weight of 3000. The raw materials and formula used are 4000Kg of adipic acid, 1300Kg of ethylene glycol, 900Kg of 1,4-butanediol, and 0.5Kg of catalyst MB20 (TPT).
[0042] PET-2 is a polyester polyol with a molecular weight of 2000. The raw materials and formula used are 3000Kg of adipic acid, 200Kg of ethylene glycol, 1800Kg of 1,4-butanediol, and 0.4Kg of catalyst MB20 (TPT).
[0043] The dry type polyurethane resin used for pasting gold and silver film of the present invention is prepared according to the following steps:
[0044] 1. Put various polyol compounds, antioxidant I-10...
Embodiment approach 2
[0049] Raw material name Weight (unit: Kg)
[0050] PET—1 200
[0051] PET—2 700
[0052] 1,6-Hexanediol 160
[0053] 4,4-Diphenylmethane diisocyanate 545
[0054] Coupling agent 10
[0055] Antioxidant I-1010 2.0
[0056] UV absorber UV-328 1.0
[0057] Catalyst 0.2
[0058] N,N-Dimethylformamide 3000
[0059] Methyl ethyl ketone 800
[0060] PET-1 is a polyester polyol with a molecular weight of 3000. The raw materials and formula used are 4000Kg of adipic acid, 1300Kg of ethylene glycol, 900Kg of 1,4-butanediol, and 0.5Kg of catalyst TPT.
[0061] PET-2 is a polyester polyol with a molecular weight of 2000. The raw materials and formula used are 3000Kg of adipic acid, 200Kg of ethylene glycol, 1800Kg of 1,4-butanediol, and 0.4Kg of catalyst TPT.
[0062] The dry type polyurethane resin used for pasting gold and silver film of the present invention is prepared according to the following steps:
[0063] 1. Put various polyol compounds, antioxidant I-1010, solvent DMF,...
Embodiment approach 3
[0068] In order to verify that the dry polyurethane resin used in the present invention has good bonding properties with the gold and silver film, the resin prepared by the above-mentioned embodiment is made into leather according to the following formula and the current normal process of dry veneering, and the specific formula is as follows:
[0069] Resin 100
[0070] DMF60
[0071] Pigment 15
[0072] leveling agent 1
[0073] Stripping agent 0.5
[0074] After testing, the dry polyurethane synthetic leather made with the above-mentioned formula can be heat-bonded with the gold and silver film at 120°C-130°C, and has good bonding fastness, excellent scratch resistance, wear resistance and bending performance, and does not affect the gold and silver film. metallic luster.
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