Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Processes of preparing a desired or intentional composition...
Patent
1982-09-15
1984-02-07
Anderson, Harold D.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Processes of preparing a desired or intentional composition...
404 32, 428500, 428522, C08L 3302, C08L 3318, C08L 8304
Patent
active
044304633
ABSTRACT:
Improved Portland cement compositions and their use in cement coating operations is disclosed wherein acrylic polymers modified by critical amounts of propylene glycol, a coloring ingredient and a defoaming agent such as dimethyl polysiloxane are used as additives substantially increasing the flexibility, abrasion and heat resistance and shear bond characteristics of Portland cement and sand mixtures used in coating compositions for concrete, wood, pressed boards and the like.
REFERENCES:
patent: 3196122 (1965-07-01), Evans
patent: 3493529 (1970-02-01), Krottinger et al.
patent: 3538036 (1970-11-01), Peters et al.
patent: 3547853 (1970-12-01), Kalandiak
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