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Temperature Stable Memory Foams
Temperature Stable Memory Foams
Patent Title: VISCOELASTIC POLYURETHANE FOAMS WITH REDUCED TEMPERATURE SENSITIVITY
Number/Link: WO2018/169833
Applicant/Assignee: Covestro
Publication date: 20 September 2018
“Gist”: A polyol blend comprising a relatively low-EO monol, diol and triol is foamed with TDI
Why it is interesting: Viscoelastic or “memory” foams are popular materials for pillows and mattresses. One drawback of these…
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Catalyst System for Frothed Foams
Catalyst System for Frothed Foams
Patent Title: METHOD FOR DELAYING CURING IN POLYURETHANE AND COMPOSITIONS AND ARTICLES MADE THEREFROM
Number/Link: WO2018/075302
Applicant/Assignee: Rogers
Publication date: 26-April-2018
“Gist”: A mixture of a metal acetylacetonate and a catalytic inhibitor prevents premature curing
Why it is interesting: A catalyst systems that prevents premature curing of frothed (PORON® – type) foams…
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Classic PU Patent of the Month: ICI on "High EO - Pure MDI" Flexible Foams (1991)
Classic PU Patent of the Month: ICI on “High EO – Pure MDI” Flexible Foams (1991)
Patent Title: Polyurethane Foams
Number/Link: EP0547765
Applicant/Assignee: ICI
Publication date: 23-06-1993
“Gist”: Flexible foams can be based on 4,4’MDI if the polyol contains 50 to 85% EO
Why it is interesting:The first flexible PU foams were all based on toluene diisocyanate and so-called “conventional polyols” (i.e. almost all-propylene oxide polyols). Attempts to replace TDI by the only…
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