GEL COMPOSITION COMPRISING A PHASE CHANGE MATERIAL
申请人:Croda International PLC
公开号:EP3692111A1
公开(公告)日:2020-08-12
[EN] MICROCAPSULES<br/>[FR] MICROCAPSULES
申请人:CRODA INT PLC
公开号:WO2017178297A1
公开(公告)日:2017-10-19
The present invention relates to microcapsules comprising a core within a polymeric shell, wherein the polymeric shell comprises a copolymer formed from 50 to 99.9%, by weight of the polymeric shell, of a first shell monomer which is ethylenically unsaturated and which has more than one ethylenic double bond; 0.01 to 50%, by weight of the polymeric shell, of a second shell monomer which is ethylenically unsaturated and which has one ethylenic double bond; and optionally, 0 to 30%, by weight of the polymeric shell, of one or more other shell monomers. The core of the microcapsules comprises an active substance, particularly a phase change material (PCM). The polymeric shell forms less than 8wt% of the total weight of the microcapsules.
[EN] GEL COMPOSITION COMPRISING A PHASE CHANGE MATERIAL<br/>[FR] COMPOSITION DE GEL COMPRENANT UN MATÉRIAU À CHANGEMENT DE PHASE
申请人:CRODA INT PLC
公开号:WO2019068458A1
公开(公告)日:2019-04-11
The present invention provides a composition comprising a) a phase change material; b) 1 to 10 wt% of a silica gelling additive; and c) a styrene co-polymer gelling additive; wherein the composition is in the form of a gel and wherein the weight ratio of b) silica gelling additive to c) styrene co-polymer gelling additive in the composition is in the range from 0.6 to 5:1. The invention also provides a method of making the composition and an article and a product comprising the composition. Finally, the invention provides the use of a combination of a silica gelling additive and a styrene co-polymer gelling additive to make a gel composition comprising a phase change material with one or more improved properties.