Formulations for cellular, foamed-polymer products based on polyvinyl chloride, improved cellular, foamed-polymer products based on polyvinyl chloride and a process for producing said improved cellular foamed-polymer products

Formulation for cellular, foamed-polymer product based on polyvinyl chloride, comprising: a polyvinyl chloride homopolymer having a K-value of from 60 to 85 and a pH value of the aqueous extract ranging of from 8 to 12; at least one isocyanate selected from isomers and homologues of diphenylmethane-...

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Bibliographische Detailangaben
Hauptverfasser: BRESSAN RAFFAELA, ANG SAM SHEHYEE, LAURI LEONE, STIGSSON JAN JERRY CHRISTIAN
Format: Patent
Sprache:eng
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Zusammenfassung:Formulation for cellular, foamed-polymer product based on polyvinyl chloride, comprising: a polyvinyl chloride homopolymer having a K-value of from 60 to 85 and a pH value of the aqueous extract ranging of from 8 to 12; at least one isocyanate selected from isomers and homologues of diphenylmethane-4,4′-diisocyanate and modified diphenylmethane-4,4-diisocyanate s and mixtures thereof; at least one anhydride selected from the group of succinic anhydride, tetrahydrophthalic anhydride, hexahydrophthalic anhydride, methyl-tetrahydrophthalic anhydride, 4-methyl-hexahydrophthalic anhydride, cyclohexane-1,2-dicarboxylic anhydride, methyl-endomethylene tetrahydrophthalic anhydride, dodecenyl succinic anhydride, trimellitic anhydride and mixtures thereof; at least a surfactant; at least a foaming agent.