Polyurethane-polyurea dispersions

C - Chemistry – Metallurgy – 08 – L

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

C08L 75/04 (2006.01) C03B 37/01 (2006.01) C08G 18/08 (2006.01) C08G 18/80 (2006.01) C08J 3/02 (2006.01) C08L 75/02 (2006.01) C09D 175/04 (2006.01)

Patent

CA 2431825

The invention relates to polyurethane-polyurea dispersions, also called PU dispersion. which contain aralkylamine-blocked isocyanate groups, and to their preparation and use. This blocking agent ahs a significantly lower deblocking temperature as compared with the prior art. Coatings produced from this dispersion have high hydrolysis resistances. The arylamine-blocked isocyanate groups are composed of polyisocyanates, polymeric polyols having average molar weights of 400 to 6000, at least one blocking agent, and either or both of nonionically hydrophilicizing compounds or compounds having at least one ionic or potentially ionic group.

L'invention a trait à des dispersions polyuréthane-polyurée, aussi appelées dispersions PU, contenant des groupements isocyanates bloqués à l'aralkylamine, ainsi qu'à leur préparation et à leur utilisation. La température de déblocage de cet agent bloquant est significativement plus faible que celle de précédentes inventions. Les revêtements produits à partir de cette dispersion ont une résistance accrue à l'hydrolyse. Les groupements isocyanates bloqués à l'aralkylamine sont composés de polyisocyanates, de polyols ayant une masse moléculaire moyenne de 400 à 6 000, d'au moins un agent bloquant, et d'un composé hydrophilisant non ionique et/ou de composés comportant au moins un groupement ionique ou potentiellement ionique.

LandOfFree

Say what you really think

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

Rating

Polyurethane-polyurea dispersions does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Polyurethane-polyurea dispersions, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Polyurethane-polyurea dispersions will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFCA-PAI-O-1993165

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