Financial World, May 8, 2025 — According to the National Intellectual Property Administration, Anhui Hengguang Polyurethane Materials Co., Ltd. has secured a patent titled "Multi-Layer Filtration Device for Silicone Oil Production in Polyurethane Foam Sealants" (Authorization No.: CN222816403U), filed in June 2024.

Patent Abstract
The utility model discloses a multi-layer filtration device for silicone oil production in polyurethane foam sealants, comprising a top chamber and a bottom chamber interconnected in a hollow cylindrical configuration. The top chamber integrates a primary filtration unit (motor, rotating shaft, and diversion platform), while the bottom chamber houses a secondary filtration unit (mounting block, collection plate, and filter mesh cylinder).

During operation, silicone oil flows down along the wall of the diversion platform. Driven by the motor, the platform rotates on bearings. Due to the viscosity of silicone oil, the rotating motion distributes the oil uniformly across the filter mesh layer, generating pressure to accelerate downward filtration. This design enhances filtration efficiency by 20-30% compared to conventional systems and prevents impurities from clogging localized areas of the filter.

Corporate Profile
Tianyancha data indicates that Anhui Hengguang Polyurethane Materials Co., Ltd., founded in 2019 and headquartered in Chizhou City, specializes in chemical raw materials and chemical products manufacturing. With a registered capital of CNY 330 million, the company has invested in 1 subsidiary, participated in 36 bidding projects, and holds 69 patents alongside 81 administrative licenses.

Source: Financial World