Dow’s proprietary BLUEWAVE dispersion process is used to prepare the cellopening latex
December 11, 2017 15:20
Patent Title: VISCOELASTIC POLYURETHANE FOAM WITH COATING
Number/Link: WO2017/210439
Applicant/Assignee: Dow
Publication date: 7 December 2017
“Gist”: Open-celled visco-foam is impregnated with an aqueous dispersant composition containing a phase change material
Why it is interesting: According to Dow, open-celled viscoelastic polyurethane foams can be prepared by using a acid-modified polyolefin latex cellopener, as discussed before in this blog. In the current invention these open-celled foams are impregnated with an aqueous composition comprising an ionomer (a sodium salt of a maleic anhydride copolymer) and a microencapsulated PCM. The composition is said to ‘coat’ the cell struts with PCM and increase the comfort properties of the foam.
I wonder if with this process enough PCM can be in introduced to have a noticeable effect.
Dow’s proprietary BLUEWAVE dispersion process is used to prepare the cellopening latex
Posted by Gerhard Bleys
Categories: dispersions, Flexible Foams
Tags: cellopener, comfort, damping, humidity, matress, memory foam, phase change material, pillow, themperature, viscoelastic
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