Air-permeable sponge composition and method for preparing air-permeable sponge by using the same
US10435529B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 28, 2017 |
| Grant date | Oct 8, 2019 |
| Priority date | — |
| Expiry date | Apr 19, 2038 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08J2475/04
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
An air-permeable sponge composition and a method for preparing an air-permeable sponge by using the same belong to the field of articles for daily use. An air-permeable sponge composition includes a sponge body and an air-permeable coating, and an outer surface layer of the sponge body being coated with the air-permeable coating. A method for making the air-permeable sponge utilizes the composition of the air-permeable sponge, wherein the air-permeable sponge is made from the air-permeable sponge composition under specific process parameters. The sponge body and air-permeable coating have the same or similar contents of isocyanate, polyether polyol and polymeric polyol and a similar porous structure.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.