Process for preparing star compounds
AssigneesSekisui Chemical Co., Ltd., Toshinobu Higashimura
InventorsToshinobu Higashimura, Mitsuo Sawamoto, Hajime Shohi
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Abstract
A process for preparing a three-branched or four-branched star compound comprising polymerizing an olefine compound represetned by the formula ##STR1## wherein A is a signle bond or phenylene group, and R.sup.3 is a hydrogen atom or methyl group and R.sup.4 is a monovalent organic group when A is a signle bond, or R.sup.3 is a hydrogen atom and R.sup.4 is an alkyl group when A is a phenylene group, using the adduct of a polyfunctional alkenyl ether represetned by the formula (I) R.sup.2 --O--CH.dbd.CHR.sup.1).sub.n (I) wherein R.sup.1 is a hydrogen atom or methyl group, n is an integer of 3 or 4, and R.sup.2 is a rtivalent organic group when n is 3 or a tetravelent organic group when n is 4 with a cation-donating compound.
Claims10
A process for preparing a three-branched or four-branched star compound characterized by polymerizing an olefin compound represented by the formula ##STR51## wherein A is a single bond or phenylene group, and R.sup.3 is a hydrogen atom or methyl group and R.sup.4 is a monovalent organic group when A is a single bond, or R.sup.3 is a hydrogen atom and R.sup.4 is an alkyl group when A is a phenylene group, using the adduct of a polyfunctional alkenyl ether represented by the formula
- R.sup.2 --O--CH.dbd.CHR.sup.1).sub.n (I)
- wherein R.sup.1 is a hydrogen atom or methyl group, n is an integer of 3 or 4, and R.sup.2 is a trivalent organic group when n is 3 or a tetravalent organic group when n is 4 with a cation-donating compound to prepare a three-branched or four-branched star compound represented by the formula ##STR52## wherein x is 1 to 10,000, Z is a terminator residue, and R.sup.1, R.sup.2, R.sup.3, R.sup.4, A and n are as defined above.
Dependencies are inferred from the claim text.