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December 31, 2013 15:06
Title: PROCESS FOR OBTAINING POLYURETHANE FOAMS
Number/Link: GB1381925
Applicant/Assignee: PECHINEY UGINE KUHLMANN
Publication date: 29-01-1975 (priority FR – 1971)
“Gist”: Very soft hydrophilic flexible foam is made from TDI and a combination of a high EO polyol and a ‘conventional’ (hot cure) polyol.
Why it is interesting: Very soft – so called “hypersoft” – foams were prepared form TDI 80/20 and a mixture of polyols consisting of a random 75% EO -25% PO triol and a block 90% PO – 10% EO triol in a ratio of 85:15. (about). The foams were all-water blown and had densities of below 30 kg/m³, which was exceptional for the time.
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Posted by Gerhard Bleys
Categories: Classic PU Patent of the month, Flexible Foams, Polyols
Tags: comfort, hydrophilic
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Then dont be modest and I hope you include a few of your own:-). Happy new year!
By Denis Hicks on December 31, 2013 at 17:15
I’ll think about it :-)
A happy new year to you too Denis!
By Geert Bleys on December 31, 2013 at 17:18
Hi
I love the “classic” category. It shows great respect for the technology and its evolution.
Happy 2014 John Duffy Easterly Research Warminster, PA USA
By John Duffy on December 31, 2013 at 16:01
Hi John,
Thank you for your comment. I will try to do at least one “classic” per month from now on.
Have a nice year-end!
Geert
By Geert Bleys on December 31, 2013 at 16:11