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OwnerKenneth Leon Price, Jeroen Franklin Visjager +1inventors
InventorsKenneth Leon Price, Jeroen Franklin Visjager, Stefan Kutta
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This invention in one aspect is a polyoxymethylene compound exhibiting an improved balance of properties and volume resistivity of 100-106 ohm-cm, which comprises polyoxymethylene, polyethylene glycol, metal oxide, high-structure carbon black and a comb polymer. The invention is more particularly directed to a polyoxymethylene compounds and molded articles therefrom in which the compound comprises 30 to 98.7% by weight of a polyoxymethylene homopolymer or copolymer, from 0.1 to 10% by weight of a polyalkylene glycol, from 0.1 to 10% by weight of metal oxide, from 1% to 15% of a high structured particulate carbon black, and from 0.1 to 15% by weight of a comb polymer containing a relatively less polar backbone with relatively more polar side chains.
A thermoplastic molding composition comprising polyoxymethylene, polyalkylene glycol, metal oxide, high structured particulate carbon black, and a comb polymer containing two discrete types of moieties one of which has higher polarity relative to the other moiety, the comb polymer comprising a poly-alpha-olefin and an acid containing monomer.
The composition claimed in 1, wherein the polyalkylene glycol has a mean number average molecular weight of from 10,000 to 45,000.
The composition as claimed in 1, wherein the polyalkylene glycol used is selected from polyethylene glycol and polypropylene glycol.
The composition claimed in 4, wherein the polyalkylene glycol has a mean number average molecular weight from 20,000 to 40,000 and is present in amount from 0.5 to 5% by weight.
A thermoplastic molding composition comprising polyoxymethylene, polyalkylene glycol, metal oxide, high structured particulate carbon black, and a comb polymer containing two discrete types of moieties one of which has higher polarity relative to the other moiety, wherein the comb polymer comprises a macromonomer formed from a C20 to C24 alpha olefin and an acid containing monomer that has been esterified with N, S, or O-containing moieties.
Dependencies are inferred from the claim text.