Process for chemical modification of polyolefins to improve thei

Details Process for chemical modification of polyolefins to improve thei Process for chemical modification of polyolefins to improve thei

1976-12-20

1978-03-21

Holler, Alan

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

C08F25502, C08F25508

Patent

active

040804054

ABSTRACT:
A process for chemical modification of polyolefins, particularly fibrillar, powder, granular or film polyolefins, in which one or more polar monomers are grafted to the polyolefins in an aqueous dispersion, by means of a free-radical generator.
Grafting is done in the presence of a wetting agent and a particular additive derived from alkanes and possessing at least 1 thiol function; the dispersion contains 0.1 to 50 parts weight of monomer, 0.1 to 3 parts weight of wetting agent, and 0.1 to 3 parts weight of additive, for 100 parts weight of polyolefin.
Polyolefins that have undergone this process have an improved wettability and, in applications requiring treatment in an aqueous suspension, such as the production of partly synthetic paper, this facilitates their dispersion in water.

REFERENCES:
patent: 3848025 (1974-11-01), Alberts et al.
patent: 3862266 (1975-01-01), McConnell et al.
patent: 3873643 (1975-03-01), Wu et al.
patent: 3887648 (1975-06-01), Takahashi et al.
patent: 3978162 (1976-08-01), Nakanishi et al.

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