Compositions comprising a poly(methyl ethenyl benzene) resin and mineral oil

• US 4,361,506 A
• Filed: 02/08/1980
• Issued: 11/30/1982
• Est. Priority Date: 02/08/1980
• Status: Expired due to Term

• Current Assignee: Mobil Oil Corporation (Exxon Mobil Corporation)
• Original Assignee: Mobil Oil Corporation (Exxon Mobil Corporation)
• Inventors: Russo, Robert V.
• Primary Examiner(s): Lilling, Herbert J.
• Application Number:
  US06/119,681
• Time in Patent Office: 1,026 Days
• Field of Search: 260/33.6 A, 260/33.6 AQ, 260/33.6 UA, 260/33.6 PQ, 526/347.1, 526/347
• US Class Current: 524/577
• CPC Class Codes: C08L 25/16 Homopolymers or copolymers of alkyl-substituted styrenes
• CPC Class Codes: C08L 2666/02 Organic macromolecular compounds, natural resins, waxes or and bituminous materials

Abstract

Blends of a preformed poly(methyl ethenyl benzene) polymer or copolymer derived from an isomers of methyl ethenyl benzenes in which 1-methyl-4-ethenyl benzene is the predominant isomers, and up to about 10 weight percent of mineral oil are disclosed.

Claims

1. A polymeric composition comprising a compatible mixture of a preformed polymer or a copolymer containing, in polymerized form, at least 50 weight percent of a monomer mixture comprising 0 to 0.1 percent by weight 1-methyl-2-ethenyl benzene, 0 to 15 percent by weight 1-methyl-3-ethenyl benzene and at least 85 percent by weight 1-methyl-4-ethenyl benzene;

and 50-0 percent of a different ethylenically unsaturated monomer; and

1 to 10 percent by weight of the composition of mineral oil.

2. The composition of claim 1 wherein said monomer mixture comprises at least 90 percent by weight 1-methyl-4-ethenyl benzene, 1 to 10 percent by weight 1-methyl-3-ethenyl benzene and 0 to 0.1 percent by weight 1-methyl-2-ethenyl benzene.

3. The composition of claim 1 wherein said monomer mixture comprises at least 95 percent by weight 1-methyl-4-ethenyl benzene, 1 to 5 percent by weight 1-methyl-3-ethenyl benzene and 0 to 0.05 percent by weight 1-methyl-2-ethenyl benzene.

4. Th composition of claim 1 wherein said monomer mixture comprises at least 97 percent by weight 1-methyl-4-ethenyl benzene and 1 to 3 percent by weight 1-methyl-3-ethenyl benzene.

5. The composition of claim 1 wherein said mineral oil has a Saybolt Viscosity of about 50 to 500 SUS at 37.5°

C.

6. The composition of claim 5 wherein said mineral oil has a Saybolt Viscosity of about 200 to 400 SUS at 37.5°

C.

7. The polymeric composition of claim 1 in which said polymer or copolymer is a high impact copolymer produced by grafting to a rubbery backbone polymer.