▁in ▁ 1 9 5 0 . ▁He ▁was ▁promoted ▁in ▁ 1 9 5 3 , ▁promoted ▁again ▁to ▁Research ▁Associ ate ▁in ▁ 1 9 6 0 , ▁and ▁to ▁Senior ▁Research ▁Associ ate ▁in ▁ 1 9 6 8 . ▁ ▁In ▁ 1 9 8 2 , ▁B . ▁F . ▁Good rich ▁changed ▁its ▁strateg ic ▁direction ▁and ▁sold ▁its ▁synth etic ▁rub ber ▁operations ▁to ▁Pol ys ar , ▁Ltd . ▁Good rich ▁was ▁de emph as izing ▁rub ber ▁research . ▁ ▁As ▁Hor ne ' s ▁main ▁interest ▁was ▁in ▁rub ber ▁research , ▁he ▁made ▁the ▁decision ▁to ▁join ▁Pol ys ar . ▁He ▁retired ▁from ▁Pol ys ar ▁in ▁ 1 9 8 7 . ▁ ▁Research ▁ ▁Syn th etic ▁poly is op rene ▁ ▁In ▁ 1 9 5 4 , ▁immediately ▁following ▁the ▁formation ▁of ▁the ▁joint ▁vent ure ▁Good rich - G ulf ▁Chem ical s , ▁Inc ., ▁an ▁option ▁agreement ▁was ▁obtained ▁from ▁Professor ▁Karl ▁Z ieg ler ▁to ▁examine ▁his ▁new ▁catal yst ▁system ▁for ▁the ▁polym er ization ▁of ▁eth yl ene . ▁ ▁Hor ne ▁was ▁called ▁back ▁from ▁vac ation ▁to ▁the ▁Research ▁Center ▁to ▁begin ▁work ▁immediately . ▁He ▁was ▁given ▁the ▁assignment ▁of ▁transl ating ▁into ▁practice ▁the ▁information ▁that ▁B . ▁F . ▁Good rich ▁would ▁receive ▁from ▁Karl ▁Z ieg ler . ▁After ▁ver ifying ▁the ▁claims ▁for ▁the ▁polym er ization ▁of ▁eth yl ene , ▁and ▁also