Polymer modified hydrophilic inorganic fillers for thermoplastic

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

1976-11-05

1978-05-23

Lesmes, George F.

Stock material or miscellaneous articles

Coated or structually defined flake, particle, cell, strand,...

Particulate matter

106308M, 260 37AL, 260 4214, 260 4256, 427221, 428408, 428403, B32B 516, B32B 904, B32B 1902

Patent

active

040911640

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: 3004858 (1961-10-01), Sheehan et al.
patent: 3443492 (1969-05-01), Pleass
patent: 3451835 (1969-06-01), Ganter et al.
patent: 3458804 (1969-07-01), Wolf et al.
patent: 3483156 (1969-12-01), Mills et al.
patent: 3834924 (1974-09-01), Grillo
Schonfeldt, Surface Active Ethylene Oxide Aducts, Pergamon Press, (1969), p. 451.

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