Polymeric anti-static agent

Patent metadata

Field	Value
Publication number	US-9290590-B2
Application number	US-201113642304-A
Country	US
Kind code	B2
Filing date	Apr 20, 2011
Priority date	Apr 23, 2010
Publication date	Mar 22, 2016
Grant date	Mar 22, 2016

Abstract

The application relates to polymeric antistatic agents for use in polymer molding compositions, as well as molding compositions containing these antistatic agents, the antistatic agents having good compounding properties and being inexpensive to produce,
wherein the antistatic agent is an antistatic agent of the general formula (I)

having a polymeric cationic polyelectrolyte constituent produced from diallyldialkylammonium compounds and an anionic counterion A − , in which
R1 is uniformly or mutually independently C 1 -C 18 alkyl, A − is an acid anion, and n is a whole number from 10 to 1000.

First claim

The invention claimed is:

1. A thermoplastic composition comprising at least one polycarbonate and 0.1 to 2.5 wt. % of an antistatic agent of the general formula (I)

having a polymeric cationic polyelectrolyte constituent (A) produced from diallyldialkylammonium compounds and an anionic counterion A − (B), in which
R1 is uniformly or mutually independently C 1 -C 18 alkyl,
A − is a sulfonic acid anion according to formula (II),

in which R2 is selected from the group consisting of C 1 -C 18 alkyl, mono- or polyfluorinated C 1 -C 18 alkyl, perfluorinated alkyl, aryl sulfonates, perfluorinated aryl sulfonates, aryl-substituted alkyl sulfonates and aryl-substituted perfluoroalkyl sulfonates, and
n is a whole number from 10 to 1000.

2. The thermoplastic composition according to claim 1 , characterised in that R1 is uniformly or mutually independently selected from the group consisting of methyl, ethyl, propyl, isopropyl, butyl, sec-butyl, tert-butyl, pentyl, neopentyl, hexyl, cyclohexyl and thexyl.

3. The thermoplastic composition according to claim 1 , characterised in that A − is a perfluorobutane sulfonate.

4. A method for the antistatic treatment of thermoplastic compositions comprising utilizing the thermoplastic composition according to claim 3 .

5. A method for producing moldings comprising utilizing the thermoplastic composition according to claim 1 .

6. A plastic moulding comprising the thermoplastic composition according to claim 1 .

7. The thermoplastic composition according to claim 1 , Wherein the antistatic agent is present in an amount from 0.2 to 1.5 wt. % based on the composition.

8. The thermoplastic composition according to claim 1 , wherein the antistatic agent consists of the antistatic agent of formula (I).

9. The thermoplastic composition according to claim 1 , wherein R2 is selected from the group consisting of C 1 -C 18 alkyl, mono- or polyfluorinated C 1 -C 18 alkyl, perfluorinated aryl sulfonates, aryl-substituted alkyl sulfonates and aryl-substituted perfluoroalkyl sulfonates.

10. The thermoplastic composition according to claim 1 , wherein the composition consists of the at least one polycarbonate, the antistatic agent, and optionally at least one additive selected from the group consisting of release agents, antioxidants, thermal stabilisers, coloring agents, flow control agents, flame retardants, UV absorbers, foaming agents, dyes, pigments, optical brighteners, interesterification catalysts, nucleating agents, and combinations thereof.

11. A method for producing a moulding having an antistatic effect, the moulding comprising the thermoplastic composition according to claim 1 , the method comprising the following steps:
a) producing the antistatic agent by a process comprising
exchange of the anion of the cationic polyelectrolyte constituent for hydroxyl ions,
neutralisation of the modified polyelectrolyte constituent with the acid of component A,
washing and drying of the precipitated antistatic agent,

b) compounding of the antistatic agent with a thermoplastic polymer,
c) producing the moulding by injection moulding or extrusion.

12. A thermoplastic composition consisting of at least one thermoplastic; 0.1 to 2.5 wt. % of an antistatic agent of the general formula (I)

having a polymeric cationic polyelectrolyte constituent (A) produced from diallyldialkylammonium compounds and an anionic counterion A − (B), in which
R1 is uniformly or mutually independently C 1 -C 18 alkyl,
A − is a sulfonic acid anion according to formula (II),

in which R2 is selected from the group consisting of C 1 -C 18 alkyl, mono- or polyfluorinated C 1 -C 18 alkyl, perfluorinated C 1 -C 18 alkyl, aryl sulfonates, perfluorinated aryl sulfonates, aryl-substituted alkyl sulfonates and aryl-substituted perfluoroalkyl sulfonates, and
n is a whole number from 10 to 1000; and

optionally at least one additive selected from the group consisting of release agents, antioxidants, thermal stabilisers, antistatic agents, coloring agents, flow control agents, flame retardants, UV absorbers, foaming agents, dyes, pigments, optical brighteners, interesterification catalysts, nucleating agents, and combinations thereof.

Assignees

• Heuer Helmut Werner
• Wehrmann Rolf
• Bayer Ip Gmbh

Inventors

• Heuer Helmut Werner
• Wehrmann Rolf

Classifications

• C08L69/00 Primary

  Compositions of polycarbonates; Compositions of derivatives of polycarbonates · CPC title

• C08F126/06 Primary

  by a heterocyclic ring containing nitrogen · CPC title

• C08L2666/04

  Macromolecular compounds according to groups C08L7/00 - C08L49/00, or C08L55/00 - C08L57/00; Derivatives thereof · CPC title

• C08L2310/00

  Masterbatches · CPC title

• C08L2201/04

  Antistatic · CPC title