Halogen-containing polymers provided with an antistatic agent
AssigneeWitco Vinyl Additives GmbH
InventorsBruno Hilti, Ernst Minder, Jürgen Pfeiffer, Rolf Drewes
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Abstract
A polyoxyalkylene compound and an inorganic salt are used to reduce the tendency of halogen-containing polymers to build up electrostatic charge and at the same time to achieve good stability.
Claims16
A composition consisting essentially of
- (a) a halogen-containing polymer;
- (b) a polyoxyalkylene of the formula R1—O—[CH(R3)—CH2—O—]n—[CH2—[CH(OH)]p—CH2—O]q—[C(O)]r—R2, where R1 is hydrogen, C1-C24 alkyl, C2-C24 alkenyl, CH2═CH—C(O) or CH2═CCH3—C(O);
- R2 is C1-C24 alkyl, C2-C24 alkenyl or CH2—COOH;
- R3 is hydrogen or methyl;
- n is a number equal to or greater than 2;
- p is a number from 1 to 6;
- and q and r, independently of one another, are 0 or 1;
- and
- (c) an inorganic salt of the formula {Mz+aA(az/b)−b}, where M is a z-valent alkali metal cation, alkaline earth metal cation or a zinc cation;
- a and b, independently of one another, are a number from 1 to 6;
- and A is an anion of an inorganic oxo acid, an inorganic complex acid or an organic oxo acid of sulfur;
- with the proviso that no ammonium perchlorate is present.
A process for the preparation of an antistatic halogen-containing polymer composition which comprises mixing a halogen-containing polymer and an additive mixture consisting essentially of a polyoxyalkylene of the formula R1—O—[CH(R3)—CH2—O—]n—[CH2—[CH(OH)]p—CH2—O]q—[C(O)]r—R2, where R1 is hydrogen, C1-C24 alkyl, C2-C24 alkenyl, CH2═CH—C(O) or CH2═CCH3—C(O);
- R2 is C1-C24 alkyl, C2-C24 alkenyl or CH2—COOH;
- R3 is hydrogen or methyl;
- n is a number equal to or greater than 2;
- p is a number from 1 to 6;
- and q and r, independently of one another, are 0 or 1;
- and an organic salt of the formula {Mz+aA(az/b)−b}, where M is a z-valent alkali metal cation, an alkaline earth metal cation or a zinc cation;
- a and b, independently of one another, are a number from 1 to 6;
- and A is an anion of an inorganic oxo acid, an anion of an inorganic complex acid or an anion of an organic oxo acid of sulfur, with the proviso that no ammonium perchlorate is present.
Dependencies are inferred from the claim text.