Abstract:
Dust-retentive articles, such as tack cloths, dust cloths, air filters, etc., comprise a porous web or sheet which is impregnated up to about 10 weight per cent with amorphous polypropylene of molecular weight in the range of up to about 10,000 and then dried at ambient temperature.
Abstract:
A CONCRETE OR OTHER POROUS SURFACE ANT-SPALLING WATER REPELLENT, SURFACE TREATMENT COMPSOITION, E.G., AMORPHOUS POLYPROPYLENE, AS CAN BE OBTAINED IN THE PRODUCTION OF CRYSTALLINE POLYPROPYLENE, LINSEED OIL AND STODDARD SOLVENT WHICH CAN BE BRUSH-APPLIED TO THE SURFACE WILL IMPART TO THE SURFACE ANTI-SLIP OR ICE-REJECTIN PROPERTIES RELATIVE TO UNTREATED SURFACE AREAS, WITH INHIBIT FROST PENETRATION, AND IS STABLE AGAINST OILS, SALTS AND HIH AND LOW PH SOLUTIONS.
Abstract:
A fabric is asphalt or bitumen coated and then adhesively coated at least on one side with plasticized sulfur. Bitumens including asphalt and asphalt emulsions now available are applicable. Hot melt application which can be followed immediately by the plasticized sulfur is possible. The product, which is flexible, solvent, weather resistant and light reflecting, and can be used for waterproofing as in roofing, road liners, pond and ditch liners, as wrapping material, it can be packaged as in rolls for marking stripes on tennis courts, athletic fields. Also, it can be used as pipe wrap, tank cladding and for decorative purposes.
Abstract:
A FABRIC IS LAID UPON A LAYER OF INTENTIONALLY ROUGH SURFACE OF, SAY, AGGREGATE OR EARTH, ADHESIVE, E.G., ASPHALT, IS APPLIED TO WET THE FABRIC AND THE AGGREGATE OR OTHER SURFACE AND THEN THE FABRIC IS COVERED WITH ADDITIONAL AGGREGATE IN A MANNER TO STRESS OR STRETCH AT LEAST PORTIONS THEREOF BETWEEN THE INTERPOSITIONED OR INTERLOCKING PIECES OR POINTS OF THE TWO LAYERS OF AGGREGATE. THE THUS LAID COMPOSITE CAN BE FURTHER COVERED WITH ADHESIVE AS BY SPRAYING AND THEN ROLLED IN ONE EMBODIMENT, WRINKING AND BUBBING OF THE FABRIC CONTAINING COMPOSITE, AS IN A ROAD SURFACE OR PATCH, IS PREVENTED. A FABRIC NOW PREFERRED TO BE USED AND WHICH HAS PRESENTED THE WRINKLING AND BUBBLING PROBLEM IS ONE MADE OF A HEAT SEALED NONWOVEN POLYOLEFIN FABRIC, E.G., POLYPROPYLENE.