Monsanto Company

James T Renshaw

John F Pysz, Jr

Peter M Maino

Richard E Schaefer

Joseph A Cannon

A vinyl composition tile formulation is disclosed which comprises polyvinyl chloride, inorganic fillers and from about 0.5% to about 4%, by weight of said formulation, polyvinyl butyral, as a tackifier.

Polyvinyl butyral tackifier for vinyl chloride polymer compositions

In production of solid films (e.g. a floor covering wear layer) from vinyl chloride polymer plastisols, good physical properties of the plastisols and films are provided by use of a plasticizer containing 50-90% prime ester at least about 40 parts per hundred parts by weight of which is aromatic diester selected from alkyl benzyl succinates, glutarates and mixtures thereof, up to 20% hydrocarbon boiling at 200.degree.-325.degree. C. and 10-50% non-aromatic diester having a molecular weight of 230-300. Using such a plasticizer, the plastisols and films can be conveniently plasticized with relatively small amounts of prime ester, and the films containing such small amounts of prime ester have unusually high stain resistance.

Plasticizers for vinyl chloride polymers

Vinyl plastisols are fused to heat-sensitive primary backings and facing yarns integral therewith and expanded thereon by the application of a heating medium in the form of high velocity steam or a high velocity gas. Although the temperature of the heating medium is above the softening point of the heat-sensitive primary backing, the velocity of the heating medium and the angle at which it is directed against the plastisol-coated, heat-sensitive primary backing results in fusion and expansion of the vinyl plastisol on the heat-sensitive primary backing without damage to the backing material or facing materials associated therewith.

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St. Louis, MO, United States of America

James T Renshaw