Aqueous compositions containing urea as a hydrotrope

Details Aqueous compositions containing urea as a hydrotrope Aqueous compositions containing urea as a hydrotrope

1983-11-14

1984-12-18

Lieberman, Paul

Compositions

Fluent dielectric

N-containing

252118, 252153, 252162, 252170, 252173, 252DIG14, C11D 752

Patent

active

044889895

ABSTRACT:
An aqueous composition, particularly a liquid detergent composition comprising urea as a hydrotrope, of improved storage stability which further comprises certain esters, e.g., methyl and ethyl lactates which hydrolyze at a rate comparable to that of the hydrolysis of urea to ultimately form ammonium salts whereby said detergent composition is maintained at a stable overall pH level. In an alternative, competing, but nonetheless beneficial mode of operation the ammonia generated by the hydrolysis of urea may react directly with the esters of the invention by ammonolysis. The acid from which said ester is derived has a pK.sub.a in the range of about 2 to about 4.

REFERENCES:
patent: 1035756 (1912-08-01), Stanek
patent: 2251768 (1941-08-01), Swain
patent: 2346425 (1944-04-01), Kirkpatrick
patent: 2947702 (1960-08-01), Coskie
patent: 3175977 (1965-03-01), Smithson
patent: 3943234 (1976-03-01), Roggenkamp
patent: 3954648 (1976-05-01), Belcak et al.
patent: 3963635 (1976-06-01), Dawson et al.
patent: 3975515 (1976-08-01), Wajaroff
patent: 4079020 (1978-03-01), Mills et al.
patent: 4092272 (1978-05-01), Nishimura et al.
patent: 4143159 (1979-03-01), Moller et al.
patent: 4195077 (1980-03-01), Marsh et al.
patent: 4235758 (1980-11-01), Dawson et al.
Chemical Abstracts, No. 28:8714b.
Chemical Abstracts, vol. 51(1957) pp. 11724-11725.
Chemical Abstracts, vol. 54, No. 54:25477f.
Chemical Abstracts, No. 62:6350c.
Chemical Abstracts, vol. 74 (1971) No. 15719t.
Chemical Abstracts, vol. 79 (1973) No. 147629b.
Chemical Abstracts, vol. 82 (1975) No. 88052v.
Chemical Abstracts, vol. 84 No. 84:152615b.
Chemical Abstracts, vol. 92 (1980) No. 92:116257t.

Affiliated with

Also associated with

Rating

Aqueous compositions containing urea as a hydrotrope does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Aqueous compositions containing urea as a hydrotrope, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Aqueous compositions containing urea as a hydrotrope will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1987520