Universal masterbatch

• US 6,713,545 B2
• Filed: 12/22/2000
• Issued: 03/30/2004
• Est. Priority Date: 08/29/1994
• Status: Expired due to Fees

• Current Assignee: Cabot Corporation
• Original Assignee: Cabot Corporation
• Inventors: Petiniot, Nicole, Rasquin, Philippe
• Primary Examiner(s): Wu, David W.
• Assistant Examiner(s): Lee, Rip A.
• Application Number:
  US09/748,101
• Publication Number:
  US 20010049424A1
• Time in Patent Office: 1,194 Days
• Field of Search: 524/401, 524/81, 524/223, 524/230, 524/227, 525/236, 525/224
• US Class Current: 524/224
• CPC Class Codes: C08J 2453/00 Characterised by the use of block copolymers containing at least one sequence of a polymer obtained by reactions only involving carbon-to-carbon unsaturated bonds; Derivatives of such polymers
• CPC Class Codes: C08J 3/226 using a polymer as a carrier
• CPC Class Codes: C08K 3/01 characterized by their specific function
• CPC Class Codes: C08L 53/02 of vinyl-aromatic monomers and conjugated dienes

Abstract

A universal masterbatch composition for adding fillers and particularly pigment to polymers, having up to 85%, by weight, of at least one filler, up to 25%, by weight, of at least one viscosity modifier and a remainder quantity of a styrene butadiene block copolymer. The composition further includes up to 5%, by weight, of at least one processing aid and up to 2%, by weight of at least one antioxidant.

Claims

1. A masterbatch composition comprising:

an SBS block copolymer;

a filler; and

a viscosity modifier selected from the group consisting of ethylene bis stearamide, polybutylene and hot-melt acrylate copolymer,

wherein the viscosity modifier is present in an amount up to 25% by weight of the composition and the filler is present in an amount up to about 85% by weight of the composition.

2. The composition of claim 1 further comprising a processing aid.

3. The composition of claim 1 further comprising an antioxidant.

4. The composition of claim 1 wherein the filler is a pigment.

5. The composition of claim 4 comprising at least about 26% by weight of pigment.

6. The composition of claim 5 comprising at least about 35% by weight of pigment.

7. A masterbatch resin consisting essentially of:

an SBS carrier resin;

a filler; and

a viscosity modifier selected from the group consisting of ethylene bis stearamide, polybutylene and hot-melt acrylate copolymer.

8. The masterbatch resin of claim 7 comprising at least about 26% of the filler by weight.

9. The masterbatch resin of claim 8 comprising at least about 35% of the filler by weight.