Hydrolytically stable urea-formaldehyde resins and process...

Details Hydrolytically stable urea-formaldehyde resins and process... Hydrolytically stable urea-formaldehyde resins and process...

C - Chemistry, Metallurgy

08

G

402/70

C08G 12/12 (2006.01) C08G 12/02 (2006.01) C08G 12/38 (2006.01) C08L 61/24 (2006.01) C09J 161/24 (2006.01)

Patent

CA 1207493

ABSTRACT A process for preparing a urea-formaldehyde base resin having a F/U molar ratio of 1.0:1-1.2:1, that is hydroly- tically stable, which comprises adjusting a formaldehyde solu- tion to a pH of 0.5-2.5, slowly charging urea to said formal- dehyde solution while maintaining the temperature at 40°-70°C, neutralizing the reaction mixture after obtaining a Gardner viscosity in the range of T+-V+, then adding the final charge of urea and permitting equilibration. The resultant resin can be cured to provide a resin having low formaldehyde emission.

431709

Affiliated with

Also associated with

Rating

Hydrolytically stable urea-formaldehyde resins and process... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Hydrolytically stable urea-formaldehyde resins and process..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Hydrolytically stable urea-formaldehyde resins and process... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFCA-PAI-O-1254142