US 6,608,155 B2Granted

Metal halide solid acids and supported metal halides as catalysts for the preparation of hydrocarbon resins

AssigneeEastman Chemical Resins, Inc.

InventorsLaura M. Babcock, Dennis G. Morrell

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Abstract

Supported metal halides and metal halide solid acids are used as catalysts for the polymerization of a feed stream containing at least one of pure monomer, C5 monomers, and C9 monomers to produce hydrocarbon resins. Freely-associated water may be removed from the solid acid catalyst prior to use. Resins with softening points (Ring and Ball) in the range of about 5° C. to 170° C. can be prepared. These catalysts offer advantages over the traditional Friedel-Crafts polymerization catalysts since the acid sites are an integral part of the solid. The solid acid catalysts are relatively nonhazardous, reusable catalysts which eliminate or at least reduce contamination of the resulting resin products with acid residues or by-products.

Claims20

Dependent claims

A process for making a hydrocarbon resin, comprising:

polymerizing a feed stream comprising pure monomer selected from the group consisting of styrene, alpha-methyl styrene, beta-methyl styrene, 4-methyl styrene, and vinyl toluene fractions in the presence of a supported Lewis acid metal halide solid acid catalyst wherein the Lewis acid comprises at least one member selected from the group consisting of ZnCl2, AlCl3, AlBr3, BF3, BCl3, FeCl3, SnCl4, TiCl4, ZrCl4, HfCl4, BiCl3, and lanthanide halides, wherein substantially all freely-associated water has been removed from the supported metal halide solid acid catalyst;
and
producing a hydrocarbon resin having a number average molecular weight (Mn) ranging from 400 to 2000, a weight average molecular weight (Mw) ranging from about 500 to 5000, a Z average molecular weight (Mz) ranging from about 500 to 10,000, and a polydispersity (PD) as measured by Mw/Mn between 1.2 and 3.5, where Mn, Mw, and Mz are determined by size exclusion chromatography (SEC).

Dependencies are inferred from the claim text.

Facts

Application: 09/003,879Filed 7 Jan 1998 · us provisional application
Priority: 8 Jan 1997
Published: US 2002/0183465 A15 Dec 2002
Granted: 19 Aug 2003
Term ends: Not estimatedThe source records don’t support an estimate.

Classification4 codes

C08F 240/00
Copolymers of hydrocarbons and mineral oils
C08F 10/00
Homopolymers and copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double
C08F 12/04
Monomers containing only one unsaturated aliphatic radical: containing one ring
C08F
Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds

Family

Application60/035,217Us provisional application · filed 8 Jan 1997
Application60/034,579Us provisional application · filed 9 Jan 1997
Application60/035,797Us provisional application · filed 10 Jan 1997
US 2002/0183465 A1Pre-grant publication · published 5 Dec 2002
US 6,608,155 B2This patent

From the US filing history. Foreign family members aren’t listed.