Polymer modified hydrophilic inorganic fillers for thermoplastic

Details Polymer modified hydrophilic inorganic fillers for thermoplastic Polymer modified hydrophilic inorganic fillers for thermoplastic

1975-04-30

1977-04-12

Smith, Ronald H.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

260 4256, 328407, 428404, 427221, 106308M, B05D 700, B32B 516, B32B 2702

Patent

active

040174522

ABSTRACT:
Normally hydrophilic inorganic fillers for polymeric resins are modified to enhance their dispersibility in such resins by admixing filler particles with a block copolymer of ethylene oxide and propylene oxide under shear and at an elevated temperature so as to coat the filler particles with a portion of the block copolymer. Thermoplastic polymeric resins, such as polyethylene and polypropylene, containing thus-modified fillers can be conventionally formed into products, such as thin film bags, having improved strength properties.

REFERENCES:
patent: 2472680 (1949-06-01), Pratt
patent: 3004858 (1961-10-01), Sheehan et al.
patent: 3360395 (1967-12-01), Bleuenstein
patent: 3443492 (1969-05-01), Pleass
patent: 3669911 (1972-06-01), Najvar
patent: 3855174 (1974-12-01), Brie

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