High-solid-content amino sulfonate water-based spraying polyurethane and preparation method thereof

Abstract

The invention discloses high-solid-content amino sulfonate water-based spraying polyurethane and a preparation method thereof, and belongs to the technical field of leather spraying adhesives. The high-solid-content amino sulfonate water-based spraying polyurethane comprises the following substances in parts by weight: 240 to 324 parts of polytetrahydrofuran ether, 240 to 36 parts of polypropyleneglycol, 89 to 98 parts of a diisocyanate compound, 2.8 to 7.5 parts of a plasticizer, 0.025 to 0.030 part of a catalyst, 18 to 18.9 parts of dimethylolpropionic acid, 11.5 to 11.7 parts of a neutralizer, 2 to 4 parts of an amino sulfonate chain extender, 45 parts of acetone and 220 to 310 parts of deionized water. The obtained high-solid-content amino sulfonate water-based spraying polyurethane has the advantages that the production process operation is simple, the production cost is low and the production capacity is large; when the high-solid-content amino sulfonate water-based spraying polyurethane is applied to leather spraying products, a base coating product is required to have a certain adhesive force and is required to have the characteristic of no stickiness in the static processof a drying bracket, a floating coat product is required to have relatively high compatibility, top coating is required to have an effect of improving physical properties, and scratch resistance andfolding resistance are generally required.

Description

technical field [0001] The invention belongs to the field of leather spraying adhesives, in particular to a water-based spraying polyurethane with high solid content of sulfamate and a preparation method thereof. Background technique [0002] The spraying process of leather tanneries generally adopts the production process of primer, middle coat and top coat, among which the base coat and top coat products have the characteristics of large consumption. At present, the solid content of the products widely used in the market is generally low, generally less than 20% solid content. The compatibility of water-based polyurethane supplied by various manufacturers is different, which may easily cause the decline of the physical properties of leather products. In addition, when water-based polyurethane companies produce spray products, due to the relationship between product selling price and cost, the production and transportation costs are relatively high, which greatly affects ma...

AI Technical Summary

Problems solved by technology

At present, the products widely used in the market generally have a low solid content, generally below 20% solid content. There are differences in the compatibility of water-based polyurethanes supplied by various manufacturers, which may easily cause a decline in the physical properties of leather products.

In addition, when water-based polyurethane companies produce spray products, due to the relationship between product selling price and cost, the production and transportation costs are relatively high, which greatly affects market promotion.