Paraffin emulsion used as an additive in leather finishing

Adding paraffin wax emulsion in leather finishing agent mainly fills the coating, improves the feel of the coating, wear-resisting, anti-adhesive and increases the gloss. Paraffin wax as the main raw material can greatly reduce the price of wax emulsion, and the use of the effect is not worse than natural wax, is the main additives to decorate high-grade leather, can give the leather a special brightness and wax sense.

It can be divided into soft wax and hard wax, which are used for the bottom, middle and top layer of leather respectively; from the ionic nature of the emulsion, it can be divided into non-ionic, anionic and cationic wax emulsion, which can be used with different ionic properties of finishing agents; from the dosage form, it can be made into emulsion type or solid emulsified wax. All the products have good water solubility, stable emulsion, no delamination and no floating wax in long-term storage. It can be applied to various kinds of leather finishing, and the leather after finishing has soft and natural luster, rich and moist handfeel, and can improve the friction resistance of leather surface.

Curing agents are organic amine adducts of polycarboxylic acids or cyclamidine adducts with polycarboxylic acids or anhydrides, such as XG603-1A, XG603, 2A, XG603-5A and XG633 matting curing agents produced by Ningbo Nanhai Chemical Co.

Super mattM 88, SA 186, SA 188, etc. produced by Anhui Liuan best paraffin wax refills Jietongda Chemical Co. and similar matting curing agents produced by many other companies.
According to the proper matching of polyester resin, epoxy resin and matting curing agent, it is possible to formulate the coating film gloss

powder coatings with 2% to 70% gloss. Generally, when using polyester resin with high acid value, the gloss of powder coating film is high; when using polyester resin with low acid value, the gloss of powder coating film is low.

Polyester resin with matting curing agent and epoxy resin in different ratios of epoxy-polyester powder coating formulations and film gloss and other performance comparisons are shown in Table 4-104; acid value (60/40) polyester resin with matting curing agent and epoxy resin in different ratios of epoxy-polyester powder coating formulations and film gloss and other performance comparisons are shown in Table 4-105; low acid value (70/30) polyester resin with matting curing agent and epoxy resin in different ratios of epoxy-polyester powder coating formulations and film gloss and other performance comparisons are shown in Table 4-105; low acid value (70/30) polyester resin with matting Curing agent and epoxy resin with different ratios of epoxy-polyester powder coating formulations and film gloss and other performance comparisons are shown in Table 4-106: ultra-low acid value (acid value 25) polyester resin and matting curing agent and epoxy resin with different ratios of epoxy-polyester powder coating formulations and film gloss and other performance comparisons are shown in Table 4-107.