Polyvinyl chloride composition
AssigneeVish Chimiko-Technologitcheski Institute
InventorsMiltcho A. Natov, Stefanka V. Vassileva, Hristo B. Kotchev, Zvetan S. Djagarov, Nikola N. Popov
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Abstract
The invention relates to an improved polyvinyl chloride composition useful in the construction and furniture industries, and particularly for the manufacture of furniture slaps and profiles. The present invention eliminates that activation of the wood meal ingredient with an aqueous solution of resol phenol formaldehyde resin, thereby eliminating a second drying step known to cause defects in the final product, due to gas evolution. In addition, the present invention represents an improvement in appearance and mechanical strength.
Claims3
An improved polyvinyl chloride composition containing stabilizers, plasticizers, lubricants, and wood meal, wherein the improvement comprises an addition consisting of novolak phenol formaldehyde resin, hardened by Formalin in the presence of a metallic agent selected from the group consisting of calcium oxide, calcium hydroxide, and magnesium oxide.
An improved polyvinyl chloride composition containing, by weight, 100 parts polyvinyl chloride, 1-12 parts stabilizer, 1-75 parts plasticizer, 1-5 parts lubricant, 1-15 parts calcium carbonate, 5-95 parts wood meal of particle size from 5-1000 microns, 0.05-25 parts novolak phenol formaldehyde resin, up to 6 parts Formalin, and 5 parts metallic agent selected from the group consisting of calcium oxide, calcium hydroxide, or magnesium oxide.
Dependencies are inferred from the claim text.