Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – At least one aryl ring which is part of a fused or bridged...
Statutory Invention Registration
1996-02-01
2001-03-06
Jordan, Charles T. (Department: 3641)
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
At least one aryl ring which is part of a fused or bridged...
C524S474000, C524S490000, C524S491000
Statutory Invention Registration
active
H0001949
ABSTRACT:
BACKGROUND OF THE INVENTION
This invention relates to primed polyolefin films.
Frequently it is desirable to utilize a primer or tie-coat between a film substrate and an adhesive. Historically, solutions of materials such as NEOPRENE rubber and an aromatic solvent such as toluene have been used. However, environmental concerns encourage substitution of non-aromatic solvents. Excellent substitute solvents such as those based on hydrogenated toluene are available, but they do not adequately dissolve NEOPRENE rubber.
SUMMARY OF THE INVENTION
It is an object of this invention to provide a primed polyolefin film substrate;
It is a further object of this invention to provide an improved process for producing a primed polyolefin film substrate;
It is yet a further object of this invention provide a polyolefin pressure-sensitive tape without the use of aromatic solvents; and
It is still yet a further object of this invention to provide a polyolefin substrate primed using an environmentally-friendly primer solution.
In accordance with this invention a polyolefin film substrate is primed with a hydrogenated elastomeric block copolymer dissolved in a non-aromatic hydrocarbon solvent.
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Crosslinking KRATON® FG1901X Rubber with CYMEL* 303, pp. 16-17,Technical Bulletin, SC:1048-88 (Oct. 1990).
Robert A. Tait et al., “A Pragmatic Approach to the Manufacture of Solventborne Adhesives”,Solvents, SC:2304-95 (Apr. 1995).
Hansen David Romme
Salazar Lydia Ann
Tait Robert Andrew
Baker Aileen J.
Haas Donald F.
Jordan Charles T.
Shell Oil Company
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