Thermoplastic molding materials containing inorganic subgroup metal salts

• US 5,374,675 A
• Filed: 08/13/1993
• Issued: 12/20/1994
• Est. Priority Date: 10/05/1991
• Status: Expired due to Fees

• Current Assignee: BASF AG (BASF SE)
• Original Assignee: BASF AG (BASF SE)
• Inventors: Welz, Martin, Bright, Theresa A., Plachetta, Christoph, Schlichting, Karl
• Primary Examiner(s): Hoke, Veronica P.
• Application Number:
  US08/105,667
• Time in Patent Office: 494 Days
• Field of Search: 523/136, 523/137, 523/122, 524/413, 524/403, 524/419, 430/541, 430/542, 430/945, 430/616, 430/617, 424/609
• US Class Current: 524/403
• CPC Class Codes: B41M 5/24 Ablative recording, e.g. by burning marks; Spark recording marking by high energetic means, e.g. by laser otherwise than burning or ablative removal B41M5/26; materials or methods for recording or reproduction by optical means G11B7/00
• CPC Class Codes: B41M 5/267 Marking of plastic artifacts, e.g. with laser
• CPC Class Codes: C08K 3/013 Fillers, pigments or reinforcing additives
• CPC Class Codes: C08K 5/0041 Optical brightening agents, organic pigments
• CPC Class Codes: Y10S 430/146 Laser beam

Abstract

Thermoplastic molding materials contain, as essential components,

A) from 30 to 99.995% by weight of a thermoplastic polymer,

B) from 0.005 to 5% by weight of an inorganic subgroup metal salt

and

C) from 0 to 69.995% by weight of fibrous or particulate fillers or a mixture thereof.

Claims

1. A thermoplastic molding material containing, as essential components,

A) from 30 to 99.995% by weight of a thermoplastic polymer selected from the group consisting of thermoplastic polyesters, polyolefins, styrene polymers and mixtures thereof,

B) from 0.005 to 5% by weight of a transition metal thiocyanate and

C) from 0 to 69.995% by weight of fibrous or particulate fillers or a mixture thereof.

2. A thermoplastic molding material as claimed in claim 1, wherein an inorganic subgroup metal salt is used as component B), the transition metal having an electron configuration of from d⁶ to d¹⁰.

3. A laser-inscribable molding obtainable from a thermoplastic molding material as claimed in claim 1 as an essential component.

4. The molding material of claim 1 wherein the metal thiocyanate is selected from the group consisting of CuSCN, AgSCN and AuSCN.

5. The molding material of claim 4 wherein the metal thiocyanate is CuSCN.