Storage stable PCM containing aqueous cool coatings for flexible foams
US12415935B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 6, 2021 |
| Grant date | Sep 16, 2025 |
| Priority date | — |
| Expiry date | Dec 4, 2042 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09D7/70
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
The present invention provides cooling, substantially formaldehyde and alkylphenylethoxylate (APEO) free aqueous coating compositions of a soft acrylic or vinyl copolymer binder comprising from 1.8 to 5 wt. %, based on the total weight of monomers used to make the copolymer, of an ethylenically unsaturated acid functional group containing monomer, in copolymerized form, and, in copolymerized form, an adhesion promoting ethylenically unsaturated monomer; an aqueous encapsulated PCM (phase change material) having a crosslinked acrylic shell; a nonionic associative thickener, such as a polyurethane associative thickener; and a softener. The aqueous coating compositions have a pH ranging from 7 to 8 and a solids content as high as 70 wt. % and provide soft coatings for viscoelastic polyurethane foams.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.