Adhesive compositions with block copolymer tackifiers

Details Adhesive compositions with block copolymer tackifiers Adhesive compositions with block copolymer tackifiers

1988-02-04

1989-07-04

Lieberman, Allan M.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

525 95, 525236, 525237, C08L 700, C08L 900, C08L 5300, C08L 5302

Patent

active

048451827

ABSTRACT:
Petroleum Resins particularly effective for use as tackifiers for hot melt adhesives and in tackifiers for solvent-based pressure sensitive adhesives are prepared by a process
Wherein (1) a C.sub.8 - and/or C.sub.9 aromatic unsaturated hydrocarbon-containing feed (optionally containing up to 18 wt. % or C.sub.4 or C.sub.5 unsaturated aliphatic hydrocarbons) is first polymerized completely and thereafter a C.sub.5 -aliphatic unsaturated hydrocarbon-containing feed is added, polymerization continued and the reactor effluent stripped to obtain the resin. The order of polymerization may be reversed.

REFERENCES:
patent: 2317859 (1943-04-01), Soday
patent: 2338741 (1944-01-01), Soday
patent: 2338742 (1944-01-01), Soday
patent: 2338743 (1944-01-01), Soday
patent: 2835645 (1958-05-01), D'Ianni et al.
patent: 3950453 (1976-04-01), Ishiguro et al.
patent: 4078732 (1978-03-01), Lepert
patent: 4157363 (1979-06-01), Hepworth

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