Patent ES-8602931-A1 (ES)
Title: Manufacture of detergent
IPC: C11D11/00
Filed: 1985-03-01
Abstract: Cleaner esp. for textile floor coverings consist of a porous UF foam powder support homogeneously impregnated with an 80 wt.% aq. tenside soln. in which the ready-to-use material has a foam density of 20-60 kg/cu.m.m and a bulk density of 50-150g/l with particle sizes of 0.01-12mm. Before and/or during the foaming step of the plasticised UF foam, existing free formaldehyde is liberated, while cpds. combining with formaldehyde (with the exception of sulphite in the foaming agent soln. and stabilisers for the foaming agent soln. and/or the resin soln.) are added. - Pref. the mol. ratio of total urea:total formaldehyde on the foam is between 0.62-0.95. To the aq. UF precondensate 0-1.64 wt.% sulphite (SO3) (based on dry resin) in the form of a water-soluble salt of sulphurous acid is added before and/or during the foaming process. The UF foam may be stabilised during the hardening stage (polycondensation) by the addition of 0.001-5 wt.% of thixotropic substances e.g. stratified silicate or Aerosil.  (/1) DEAB- DE3434817 C Cleaner esp. for textile floor coverings consist of a porous UF foam powder support homogeneously impregnated with an 80 wt.% aq. tenside soln. in which the ready-to-use material has a foam density of 20-60 kg/cu.m.m and a bulk density of 50-150g/l with particle sizes of 0.01-12mm. Before and/or during the foaming step of the plasticised UF foam, existing free formaldehyde is liberated, while cpds. combining with formaldehyde (with the exception of sulphite in the foaming agent soln. and stabilisers for the foaming agent soln. and/or the resin soln.) are added. - Pref. the mol. ratio of total urea:total formaldehyde on the foam is between 0.62-0.95. To the aq. UF precondensate 0-1.64 wt.% sulphite (SO3) (based on dry resin) in the form of a water-soluble salt of sulphurous acid is added before and/or during the foaming process. The UF foam may be stabilised during the hardening stage (polycondensation) by the addition of 0.001-5 wt.% of thixotropic substances e.g. stratified silicate or Aerosil.  (11pp Dwg.No0/1) GBAB- GB2155032 B A process fot the prodn. of a carrier material for use in producing a cleaning agent for textile surfaces by incorporating in pores of the carrier material in an amt. of up to 80% by wt. thereof an aq. cleansing soln. contg. a surfactant, the cleaning agent being substantially free from free formaldehyde, which comprises mixing an aq. soln. of urea-formaldehyde precondensate with an aq. soln. of a hardener for the resin and of a surfactant, one of which solns. contains a foam stabilising agent, and foaming the mixt. thus obtd., a formaldehyde binding agent which is urea exclusive of sulphite ions being present in the hardener/surfactant soln. and/or a formaldehyde binding agent comprising urea and/or sulphite ions being present in the precondensate soln.; and comminuting the foam thus obtd. to a particle size of from 0.01 to 12 mm and a powder density of from 50-150 g/l. USAB- US4655952 A Detergent for textile surfaces and textile floor coverings comprises (a) a pulverised porous carrier material contg. a foamed plastified urea-formaldehyde resin foam enriched with detergent, such that prod. has wt. per unit vol. of 60 kg per cubic m. (w.r.t. carrier material) and apparent density 50-150g per l, forming granular size of 0.01-12mm; and (b) a water contg. surfactant adhering to (a). Water is stored in (a) completely homogeneously in amt. 80 wt.% or less. Detergent results from a mixt. of (a) with a highly conc. aq. cleaning soln.. - Prodn. comprises (i) foaming 56 pts.wt. of surfactant contg. 3 pts.wt. of aq. soln. of 30% phosphoric acid and 10% alkylnaphthalene sulphonate, and 53 pts.wt. of water with air; and (ii) adding a mixt. of 91.5 pts.wt. of aq. soln. of a pre-condensed urea-formaldehyde resin and a mixt. of 19.5 pts.wt. water, 4.4 pts.wt. urea, 0.027 pts.wt. sulphate, and 0.06 pts.wt. bentonite.