Alpha methyl styrene and vinyl toluene and processes of preparat

Details Alpha methyl styrene and vinyl toluene and processes of preparat Alpha methyl styrene and vinyl toluene and processes of preparat

1972-06-26

1976-05-11

Schofer, Joseph L.

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

260 285R, 526347, C08F21000, C08F21200

Patent

active

039562506

ABSTRACT:
The specification discloses resinous compositions comprising copolymers of alpha methyl styrene and vinyl toluene, 95 percent by weight of said copolymers having molecular chain lengths less than 100 Angstroms. The compositions are characterized by softening points in the range of about 10 to 98.degree.C and good solubility in paraffin wax. Processes are disclosed for preparing said compositions by copolymerizing mixtures of monomers of vinyl toluene and alpha methyl styrene in a weight ratio in the range of 2.5:1 to 4.5:1 in the presence of an acid clay catalyst.

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patent: 3630981 (1971-12-01), Finfinger et al.
patent: 3639369 (1972-01-01), Norton et al.
patent: 3640981 (1972-02-01), Davis
Bly, J. Polymer Science, 1968, C-21, 13-21.
Nakajima, J. Polymer Science, 1968, C-21, 153-158.
Nakajima, J. Applied Polymer Science, 1971, 15, 3089-3099.
Nakajima, in "Polymer Molecular Weight Methods," Advances in Chemistry Series 125, Amer. Chem. Soc., pp. 98-107.
Miller, "The Structure of Polymers", 1968, pp. 330-333, (Rheinhold).

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