Novel hydrocarbon resins and their use in adhesives

US4650829A · kind A · utility

Assignee

• Exxon Research and Engineering Company · US

Inventors

• Bernard L. Bossaert · Brussels, BE
• Andre Lepert · Yvetot, FR
• Jacques Lechat · Waterloo, BE
• Vincent L. Hughes · Baton Rouge, US
• Raymond C. C. Yap · Yokohama, JP

Key dates

• Filing date: Dec 11, 1984
• Grant date: Mar 17, 1987
• Expiry date: Dec 11, 2004

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08L2666/02
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

Hydrogenated hydrocarbon resins from cyclopentadiene and/or substituted cyclopentadiene of softening point below 90.degree. C. and having a (Tg) as from 35 to 70 lower than the softening point with less than 12 wt. % of the resin having a molecular weight above 1000 are particularly useful as tackifiers in pressure sensitive adhesives especially in hydrogenated styrene/butadiene/styrene block copolymer adhesive formulations where their use can obviate the need for plasticizing oil.