Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
89 words
A process for the production of the resin of claim 1 which comprises polymerizing a monomer mixture containing from about 50 to about 90 weight percent alpha-methylstyrene and from about 10 to about 50 weight percent vinyltoluene dissolved in an inert organic reaction medium at a concentration of from about 5 to about 20 weight percent, which has been precooled to a temperature between about 0* and about -50* C, in the presence of a catalytic amount of water and a Friedel-Crafts halide at atmospheric pressure and adiabatic conditions.
Claim 2
Dependent Claim
16 words
The process of claim 2 wherein the inert organic reaction medium is an aromatic hydrocarbon solvent.
Claim 3
Dependent Claim
12 words
The process of claim 2 which comprises continuously polymerizing the monomer mixture.
Claim 4
Dependent Claim
26 words
The process of claim 4 wherein at least 45 percent by weight of the inert organic reaction medium consists of recycled polymerized alpha-methylstyrene vinyltoluene copolymer solution.
Claim 5
Dependent Claim
29 words
The process of claim 4 wherein the Friedel-Crafts halide is selected from the group consisting of boron trifluoride, aluminum chloride, ethyl aluminum dichloride, diethyl aluminum chloride and mixtures thereof.
Claim 6
Dependent Claim
130 words
The process of claim 4 which comprises continuously polymerizing a monomer mixture containing from about 50 to about 90 weight percent alpha-methylstyrene and from about 10 to about 50 weight percent vinyltoluene dissolved in an aromatic hydrocarbon solvent at a concentration of from about 5 to about 20 weight percent which has been precooled to a temperature between about 0* and about -50*C in the presence of from about 0.05 to about 1.0 percent by weight based on alpha-methylstyrene and vinyltoluene monomer mixture of a Friedel-Crafts halide selected from the group consisting of boron trifluoride, aluminum chloride, ethyl aluminum dichloride, diethyl aluminum chloride and mixtures thereof, and from about 2 to about 100 ppm of water based on the alpha-methylstyrene and vinyltoluene monomer mixture at atmospheric pressure and adiabatic conditions.
Claim 7
Dependent Claim
215 words
The process of claim 5 which comprises a. cooling a feed stream comprising a monomer mixture consisting of from about 50 to about 90 weight percent alpha-methylstyrene and about 10 to about 50 weight percent vinyltoluene dissolved in an aromatic hydrocarbon solvent at a concentration of from about 30 to about 60 weight percent and from about 2 to about 100 ppm of water based on the monomer mixture to a temperature of between about 0* to about -50* C, b. continuously flowing said feed stream through a mixing jet into a pipeline reactor and polymerizing the monomer mixture at atmospheric pressure and adiabatic conditions and c. recycling a sufficient amount of the effluent from the pipeline reactor after cooling it to a temperature ranging from about 0* C to about -50* C to the mixing chamber such that the alpha-methylstyrene vinyltoluene monomer concentration in the mixture entering the pipeline reactor ranges between about 5 and about 20 percent by weight of the total mixture while simultanEously adding a catalyst selected from the group consisting of boron trifluoride, aluminum chloride, ethyl aluminum dichloride, diethyl aluminum chloride and mixtures thereof to the recycling effluent in an amount of from about 0.05 to about 2.0 percent by weight based on the monomer mixture in the feed stream.
Claim 8
Dependent Claim
21 words
The process of claim 8 wherein the aromatic hydrocarbon solvent is selected from the group consisting of toluene, xylene and cumene.
Claim 9
Dependent Claim
11 words
The process of claim 8 wherein the catalyst is boron trifluoride.
Claim 10
Dependent Claim
21 words
The process of claim 8 wherein the monomer mixture contains about 70 weight percent alpha-methylstyrene and about 30 weight percent vinyltoluene.
Claim 11
Dependent Claim
41 words
A printing ink comprising from about 5 to about 40 weight percent of the resin of claim 1, from about 40 to about 90 weight percent of an aromatic hydrocarbon solvent, and from about 1 to about 50 weight percent pigment.