Key statement: A method for preparing a functional polymer, the method comprising: terminating a living polymer chain with a functionalizing agent where the functionalizing agent is defined by the formula [pi]-[R.sub.1]-[alpha] where [pi] is a leaving group or an addition group, [R.sub.1] is a bond or a divalent organic group, and a is a sulfur-containing heterocycle selected from the group consisting of thiirane, thietane, thiolane, thiazoline, dihydrothiophene, thiadiazine,
thioxanthene, thianthrene, phenoxathiin, dihydroisothiazole, and thienofuran group or substituted form thereof.
TABLE Physiologic, pharmacologic, and pathologic causes of an elevated serum prolactin level (1) PHYSIOLOGIC Pregnancy Ectopic pregnancy Lactation Nipple stimulation Stress Sleep disorder PHARMACOLGIC Dopamine receptor antagonists: phenothiazines, butyrophenones,
thioxanthene, risperidone, metoclopramide, sulpiride, pimozide Dopamine-depleting agents: [alpha]-methyldopa, reserpine Hormones: estrogens, antiandrogens Others: danazol, isoniazid, verapamil, cyproheptadine, opiates, H2-blockers (cimetidine), cocaine and marijuana, tricyclic antidepressants PATHOLOGIC Acromegaly Alcoholic cirrhosis Chest wall trauma or tumor Herpes zoster Hypothalamic and pituitary stalk disease Hypothyroidism Pituitary tumors: prolactinomas, adenomas Polycystic ovarian syndrome Renal failure Sarcoidosis