Copolymers of polyaspartic acid and polycarboxylic acids and...

C - Chemistry – Metallurgy – 08 – G

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

C08G 73/10 (2006.01) C02F 5/12 (2006.01) C08G 69/10 (2006.01) C08G 69/26 (2006.01) C08G 69/28 (2006.01) C08G 69/36 (2006.01)

Patent

CA 2183068

Copolymers of polyaspartic acid which are suitable for the inhibition of scale deposition were obtained by reacting maleic acid, an additional polycarboxylic acid and ammonia in a stoichiometric excess, at 120 - 350 °C, preferably 180 - 300 °C, to provide copolymers of polysuccinimide. In a second embodiment, a polyamine was added to the reaction mix. These intermediate polysuccinimide copolymers could then be converted to the salts of copolymers of polyaspartic acid by hydrolysis with a hydroxide. Such copolymers are useful in preventing deposition of scale from water and find applications in treating water. Other applications include scale prevention additives for detergents. In addition, such copolymers inhibit dental tartar and plaque formation.

On a obtenu des copolymères de l'acide polyaspartique utiles pour empêcher la formation de dépôts de tartre, en faisant réagir de l'anhydride maléique, un acide polycarboxylique additionnel et de l'ammoniac en excès par rapport à la proportion stoechiométriques, à 120 - 350 ~C et de préférence à 180 - 300 ~C, ce qui a fourni des copolymères du polysuccinimide. Dans une seconde forme, on a ajouté une polyamine au mélange réactionnel. Ces copolymères intermédiaires du succinimide peuvent ensuite être convertis en sels de copolymères de l'acide polyaspartique par hydrolyse par un hydroxyde. Ces copolymères sont utiles pour empêcher la formation de tartre dans l'eau et ils trouvent des applications dans le traitement de l'eau. Parmi les autres applications, on peut les utiliser comme additifs anti-tartre dans les détergents. En plus, ces copolymères inhibent la formation de tartre dentaire et de plaque dentaire.

LandOfFree

Say what you really think

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

Rating

Copolymers of polyaspartic acid and polycarboxylic acids and... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Copolymers of polyaspartic acid and polycarboxylic acids and..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Copolymers of polyaspartic acid and polycarboxylic acids and... will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFCA-PAI-O-2016571

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