Industry News

Aiming at the common pain point of product migration and precipitation in the production of PVC foam boards matched with wooden handles, this paper completely disassembles the underlying logic of migration problems in PVC systems from four dimensions: the characteristics of low-molecular fractions of polyethylene wax, the correlation between oxidized wax acid value and compatibility, the synergistic migration effect of multiple additives, and the process impact of insufficient mixing temperature. This paper clearly points out that insufficient acid value of oxidized wax is only an amplification factor of migration rather than an absolute inducement, corrects the industry's cognitive misunderstanding that "insufficient acid value will inevitably lead to migration", and presents typical scenarios of multi-component synergistic precipitation and the action mechanism of migration induced by substandard mixing process. Finally, a complete set of full-link rapid troubleshooting schemes that can be implemented without large-scale equipment are provided, offering directly applicable practical references for the PVC foam board industry to solve migration problems across the entire chain from additive selection, formula optimization to process control.

This paper focuses on micronized wax, a commonly used product in the coating field. Starting from the source of production processes, it systematically compares the core differences between jet-milled micronized wax and ground micronized wax in dimensions such as particle morphology, particle size distribution, thermal stability and product purity. It disassembles how process characteristics are transmitted to practical application effects including the scratch resistance, smooth hand feel and gloss performance of the final coating film, and clarifies the respective applicable scenarios of the two types of products. This helps formulation practitioners accurately grasp the logic of additive selection and find the optimal balance point between performance and cost.

In 2026, the chemical auxiliaries industry entered a critical period of transformation under the 15th Five-Year Plan, with the global market size expected to reach USD 36.31 billion, a year-on-year increase of about 8.6%. The industry's main theme is shifting from "scale leadership" to "value leadership," with original technology, differentiated products, and green compliance becoming the core of competition. Domestically, the implementation of the new national VOC standard, tightening international PFAS controls, and rising requirements for carbon footprint and full-chain carbon management are forcing auxiliaries enterprises to accelerate their green upgrading. In the rubber auxiliaries sector, China ranks first globally in output but faces a shift from "tonnage" to "quality." Meanwhile, industry standard development is accelerating, filling gaps in certain application areas. Overall, competition in the auxiliaries industry is shifting from production capacity and scale to comprehensive capabilities in technological originality, green compliance, and carbon management.

As an important derivative in polyolefin production, the yellowing issue of by-product polyethylene wax has long been a core pain point restricting its appearance quality and downstream application expansion. Starting from the molecular structure characteristics of by-product polyethylene wax, this paper systematically sorts out four core inducements: oxidation reaction, high-temperature thermal decomposition, impurity catalysis and external environmental factors, clarifies the action paths and coupling mechanisms of different factors in the yellowing process, compares the essential difference in anti-yellowing performance between by-product wax and refined polyethylene wax, fills the gap in targeted analysis of yellowing rules of by-product wax in existing industry researches, and provides practical theoretical reference for process optimization in production end, condition control in storage end and formulation of anti-yellowing schemes in downstream application end.

This paper focuses on the application scenarios of polyethylene wax as polishing wax. Combined with practical production experience, it sorts out the product types in multiple fields such as plastics, coatings & inks, leather and rubber that are suitable for using polyethylene wax to complete polishing and brightening. It also points out its practical advantages compared with ordinary polishing wax, providing an easy-to-understand reference direction for material selection in relevant production processes.

This paper analyzes the common selection idea in the hot melt adhesive industry that "selecting wax with a melting point of 130℃ can shorten the curing time". It clarifies that the dropping melting point of industrialized mass-produced conventional non-oxidized polyethylene wax generally does not exceed 120℃, and points out that forcibly pursuing the melting point of 130℃ will cause secondary problems such as decreased compatibility and thermal aging of the adhesive. At the same time, it explains that oxidized wax is not suitable for this scenario due to its excessively high viscosity. This paper introduces the mature commercial application status of hot melt adhesive special polypropylene wax with both high melting point and low viscosity, and also gives an alternative scheme that can optimize the curing speed without replacing the wax category, providing a practical technical reference for the formulation selection of hot melt adhesives.