Method for producing flexible block foam polyols

C - Chemistry – Metallurgy – 08 – G

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

C08G 65/26 (2006.01) C08G 18/48 (2006.01)

Patent

CA 2385085

The invention relates to polyether alcohols that are produced by a ring- opening polymerization of ethylene oxide and at least one alkylene oxide with at least 3 carbon atoms in the molecule to H-functional starting substances. The inventive method is further characterized in that ethylene oxide or a mixture of ethylene oxide and at least one alkylene oxide with at least 3 carbon atoms in the molecule with an ethylene oxide content of at least 98 %, based on the mixture, is added to the starting substance in an amount of maximally 40 % by weight, based on the weight of the polyether alcohol. At least one alkylene oxide with at least 3 carbon atoms in the molecule or a mixture of ethylene oxide and at least one alkylene oxide with at least 3 carbon atoms in the molecule and an ethylene oxide content of maximally 20 % by weight, based on the mixture, is added.

La présente invention concerne des polyétheralcools pouvant être préparés par polymérisation par ouverture de cycle d'oxyde d'éthylène et d'au moins un oxyde d'alkylène présentant au moins 3 atomes de carbone par molécule, avec des substances de départ à fonction H. L'invention se caractérise en ce que de l'oxyde d'éthylène ou un mélange d'oxyde d'éthylène et d'au moins un oxyde d'alkylène comprenant au moins 3 atomes de carbone par molécule est fixé à la substance de départ, la teneur en oxyde d'éthylène valant respectivement au moins de 98 % en poids du point de vue du mélange, ou au maximum 40 % en poids du point de vue du poids du polyétheralcool, et en ce qu'au moins un oxyde d'alkylène comprenant au moins 3 atomes de carbone par molécule ou un mélange d'oxyde d'éthylène et d'au moins un oxyde d'alkylène comprenant au moins 3 atomes de carbone par molécule est ensuite fixé, la teneur en oxyde d'éthylène du mélange étant au maximum de 20 % en poids.

LandOfFree

Say what you really think

Search LandOfFree.com for Canadian inventors and patents. Rate them and share your experience with other people.

Rating

Method for producing flexible block foam polyols does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method for producing flexible block foam polyols, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for producing flexible block foam polyols will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFCA-PAI-O-1688404

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.