Hardener composition for the production of polyurethane...

C - Chemistry – Metallurgy – 08 – L

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

C08L 71/02 (2006.01) C08G 18/48 (2006.01) C08G 18/66 (2006.01) C08G 18/76 (2006.01) C08L 75/08 (2006.01)

Patent

CA 2101490

The invention relates to compositions comprising a) a polyol having on average 3 to 8 hydroxyl groups per molecule and an average molecular weight per hydroxyl group of up to 150; b) a polyether-polyol having on average 2 to 3 hydroxyl groups per molecule and an average molecular weight per hydroxyl group of 150 to 500 and c) a poly(oxyalkylene)polyamine having on average 2 to 4 amino groups per molecule and an average total molecular weight of between 1000 and 3000. The compositions described are distinguished by a low tendency to demix, even during prolonged storage. Reaction mixtures of the compositions described, as hardeners, and polyisocyanates of the diphenylmethane series cure fully without passing through a brittle phase. The shaped articles formed have good mechanical properties.

Cette invention concerne des compositions comprenant : a) un polyol renfermant en moyenne de 3 à 8 groupements hydroxyles par motif et d'un poids moléculaire moyen par groupement hydroxyle allant jusqu'à 150; b) un polyéther de polyol renfermant en moyenne de 2 à 3 groupements hydroxyles par motif et d'un poids moléculaire moyen par groupement hydroxyle allant de 150 à 500; et c) une polyamine de poly(oxyalkylène) renfermant en moyenne de 2 à 4 groupements amines par motif et d'un poids moléculaire total moyen allant de 1 000 à 3 000. Les compositions divulguées sont caractérisées par une faible tendance à la démixion, même lors d'un entreposage prolongé. Les mélanges réactionnels des compositions divulguées, utilisés comme durcisseurs, et les polyisocyanates de la série du diphénylméthane durcissent complètement sans passer par une phase fragile. Les moulages obtenus possèdent de bonnes propriétés mécaniques.

LandOfFree

Say what you really think

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

Rating

Hardener composition for the production of polyurethane... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Hardener composition for the production of polyurethane..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Hardener composition for the production of polyurethane... will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFCA-PAI-O-2028337

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