Aliphatic petroleum-based resins, method to control their softening point and molecular weight and hot melt pressure sensitive adhesive containing same

The invention provides a petroleum-based aliphatic resin having a) a Ring and Ball (R&B) softening point in the range of 75 to 110 DEG C, b) a weight average molecular weight (Mw) of 1000 to 2600 Dalton, a z-average molecular weight (Mz) from 1900 to 5000 Dalton and an Mw/Mn below 2.0, c) a leve...

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Bibliographische Detailangaben
Hauptverfasser:	BEREND LENSELINK, MICHAEL HENDRIKUS THEELEN, CHRISTIAAN PIETER LOUIS CHARLES DONKER
Format:	Patent
Sprache:	eng
Schlagworte:	ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE ADHESIVES ADVERTISING CHEMISTRY COMPOSITIONS BASED THEREON CRYPTOGRAPHY DISPLAY DISPLAYING DYES EDUCATION LABELS OR NAME-PLATES MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED BONDS METALLURGY MISCELLANEOUS APPLICATIONS OF MATERIALS MISCELLANEOUS COMPOSITIONS NATURAL RESINS NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL ORGANIC MACROMOLECULAR COMPOUNDS PAINTS PHYSICS POLISHES SEALS SIGNS THEIR PREPARATION OR CHEMICAL WORKING-UP USE OF MATERIALS AS ADHESIVES
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Beschreibung
Zusammenfassung:	The invention provides a petroleum-based aliphatic resin having a) a Ring and Ball (R&B) softening point in the range of 75 to 110 DEG C, b) a weight average molecular weight (Mw) of 1000 to 2600 Dalton, a z-average molecular weight (Mz) from 1900 to 5000 Dalton and an Mw/Mn below 2.0, c) a level of aromatic protons below 1.5 % with respect to the total protons determined by H-NMR, and d) a mixed methylcyclohexane aniline cloud point (MMAP) of 90 DEG C or less. The resins according to the invention are characterized by a high amount of cyclic structures. Further disclosed is a method of independently controlling the R&B softening point and the molecular weight of an aliphatic resin composition during its preparation by polymerization of a petroleum-based feed, the method being characterized in that the amount of cyclic structures in the resins is increased.