Recently, fresh achievements have been made in China’s chemical industry. On August 24, Sinochem International completed full‑line commissioning of China’s first EMA (Ethylene‑Maleic Anhydride Copolymer) plant, which produced qualified products. This breakthrough with fully independent intellectual property rights has broken the long‑term dominance of overseas enterprises in the field of new high‑activity additives. Regarded by the industry as a landmark event marking China’s new‑materials industry’s transition from “following suit” to “running neck‑and‑neck and taking the lead”, it further proves that the localization of high‑performance fine additives has become a “key enabler” underpinning the iterative upgrading of the new‑materials industry.

Amid the new‑wave industrial boom, Shijiazhuang Pengnuo Technology Co., Ltd. (hereinafter referred to as Pengnuo Technology), a high‑tech enterprise deeply engaged in fine chemicals, consistently pursues independent R&D and high‑end development. Its flagship product, Anti‑Yellowing Agent HN‑150 (Yellow Inhibitor HN‑150), is a prime example of this development philosophy.

A High‑Purity Anti‑Yellowing Additive Addressing Weather‑Resistance Challenges for Engineering Plastics

Anti‑Yellowing Agent HN‑150 (Chemical Name: Bis(N,N‑dimethylhydrazidoamino‑4‑phenyl)methane, CAS No.: 85095‑61‑0) is an anti‑yellowing additive tailored for polymer materials. Noted for its high purity (≥99%) and excellent thermal stability, it appears as white or pale‑yellow powder and maintains stable performance under high‑temperature processing conditions.

In practical applications of advanced manufacturing materials such as engineering plastics and polyurethanes, yellowing of finished products over time triggered by ultraviolet radiation, thermal oxidation and other factors has long been a common pain point for downstream manufacturers. Yellowing not only compromises product appearance but also shortens service life and downgrades finished‑product quality. Instead of merely covering discoloration, HN‑150 neutralizes active reactive species in materials and inhibits the formation of yellow chromophores at the molecular level to block yellowing reactions at the source. It substantially extends product service life and preserves stable appearance. It is widely applied in spandex fibers, synthetic leather, artificial leather and diverse polyurethane products. It can also serve as a light stabilizer for polyamides and thermal stabilizer for polyethylene oxide, covering sectors including textiles, building materials, plastics and high‑performance composite materials.

From Key Additives to Key Materials: The Era of Domestic Substitution Arrives

Just as the commissioning of the EMA plant fills a domestic technological gap, the stable supply of high‑end additives such as Anti‑Yellowing Agent HN‑150 constitutes a vital link to guarantee the independent and controllable industrial chains for China’s engineering plastics and advanced materials. Leveraging mature synthesis processes and rigorous quality‑control systems, Pengnuo Technology delivers localized solutions featuring consistent batch‑to‑batch performance and reliable purity for downstream clients, helping enterprises reduce reliance on imported additives and effectively cut overall costs.

Pengnuo Technology states that it will continue to uphold the development philosophy of “gaining a foothold through quality and driving growth via innovation”. Keeping pace with domestic‑substitution trends within the new‑materials industry, the company will keep expanding its product portfolio of high‑value‑added fine chemicals and contribute “Pengnuo’s strength” to the high‑quality development of China’s advanced manufacturing sector.

• Official Website:www.pengnuochemical.com

• E‑mail:sales@pengnuochemical.com