Sinopec Chongqing Chuanwei Chemical Co., Ltd. (hereinafter referred to as Chuanwei Chemical) has delivered its first batch of customized high-performance Vinyl Acetate-Ethylene Copolymer Emulsion (VAE) products tailored to client requirements. The milestone launch fills the domestic market gap of high-end VAE materials for premium building waterproofing applications.
Two years ago, a leading domestic building waterproofing enterprise raised specialized technical requirements for high-performance waterproof-grade VAE. Back then, only one overseas manufacturer could meet such rigorous industry standards. Targeting surging high-end market demands, Chuanwei Chemical leveraged its integrated advantages covering production, marketing, research and end-user application. Its R&D team resided at the client’s manufacturing plant for more than one month to conduct on-site investigations and clarify refined technical indicators.
Throughout the R&D and industrial production phase, Chuanwei’s technical engineers shuttled between customer workshops, corporate laboratories and production sites. The team completed over 200 laboratory-scale tests and 16 industrial pilot tests, carrying out targeted process optimization and technological breakthroughs iteratively to refine product performance. Making pivotal technological breakthroughs in early 2026, Chuanwei Chemical independently developed the brand-new VAE product that simultaneously satisfies three strict comprehensive criteria: long-term stability, high mechanical strength and superior water resistance. The product is specially applied to waterproof coatings for building roofs, kitchens, bathrooms and other core construction scenarios.
To date, the innovative VAE has passed multiple rounds of field trials at the client’s production bases. All performance parameters fully comply with technical specifications for premium waterproof-grade VAE products. Chuanwei Chemical has signed the first official delivery order, and the product will be deployed at the client’s other domestic manufacturing facilities in phases.
As an eco-friendly chemical material, VAE boasts extensive application scenarios covering construction, real estate, furniture manufacturing, packaging, textile and papermaking industries. Driven by stricter national environmental supervision policies and rising public awareness of green manufacturing, the market demand for environmentally compatible chemicals keeps soaring. Thanks to its unique eco-friendly attributes, VAE has witnessed expanding market scale and robust downstream demand growth.
Committed to empowering domestic green chemical supply chains, Chuanwei Chemical has accelerated VAE capacity expansion in recent years. In 2022, the 60,000-ton/year VAE re-expansion project obtained official approval from Sinopec. This project marked another major capacity upgrade following the commissioning of a 60,000-ton/year VAE production line in 2021.
In 2023, the supporting land grading work of the 60,000-ton/year Vinyl Acetate (VA) capacity expansion project officially kicked off, kicking off full-scale construction. The project is scheduled to be completed and put into operation by the end of 2024. Upon full commissioning, Chuanwei Chemical’s total annual VAE production capacity will reach 180,000 tons, ranking it among China’s top domestic VAE manufacturers by production scale. The capacity expansion will further consolidate Chuanwei Chemical’s market edge in central and western China’s chemical sector, strengthen localized high-end waterproof material supply capacity, and break the long-term overseas technological monopoly in the high-end VAE subdivision field.
