Block polymers of monovinyl aromatic hydrocarbons and conjugated dienes

• US 3,265,765 A
• Filed: 01/29/1962
• Issued: 08/09/1966
• Est. Priority Date: 01/29/1962
• Status: Expired due to Term

• Current Assignee: Geoffrey Holden, Ralph Milkovich
• Original Assignee: Geoffrey Holden, Ralph Milkovich
• Inventors: Holden, Geoffrey, Milkovich, Ralph
• Application Number:
  US04/169,674
• Time in Patent Office: 1,653 Days
• US Class Current: 525/271
• CPC Class Codes: C08F 297/046 polymerising vinyl aromatic monomers and isoprene, optionally with other conjugated dienes

Claims

1. AS A NOVEL COMPOSITION OF MATTER, AN UNVULCANIZED ELASTOMERIC BLOCK COPOLYMER HAVING THE GENERAL CONFIGURATION

5. A NEW COMPOSITION OF MATTER COMPRISING AN ELASTOMER OF THE GROUP CONSISTING OF CONJUGATED DIENE HOMOPOLYMERS AND RANDOL COPOLYMERS OF CONJUGATED DIENES WITH VINYLAROMATIC HYDROCARBONS AND 5-50% BY WEIGHT OF BLOCK COPOLYMER ACCORDING TO CLAIM 1.