Thickening system for water-based building material mixes

Details Thickening system for water-based building material mixes Thickening system for water-based building material mixes

1991-05-23

1993-08-10

Michl, Paul R.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Processes of preparing a desired or intentional composition...

524 43, 524405, 524503, C08L 126

Patent

active

052349683

ABSTRACT:
Thickening systems for water-based building material mixes, composed of 0.01 to 2% by weight of a water-soluble cellulose ether, 0.01 to 2% by weight of polyvinyl alcohol and 0.005 to 1% by weight of boric acid or salts thereof, the respective percentages being based on the dry substance content of the building material mix.
Due to the addition of boric acid or borax, these thickening systems have an improved thickening action compared with thickening mixtures composed only of cellulose ether and polyvinyl alcohol.

REFERENCES:
patent: 3438808 (1969-04-01), Hawkins et al.
patent: 3600342 (1971-08-01), Nickerson et al.
patent: 3720633 (1973-03-01), Nickerson
patent: 4654085 (1987-03-01), Schinski
patent: 4820754 (1989-04-01), Negri et al.
patent: 4846889 (1989-07-01), Meyer

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