ry lic ▁Ac ry lic , ▁a ▁polym er ▁called ▁poly ( m eth yl ▁m eth ac ry late ) ▁( PM MA ), ▁is ▁also ▁known ▁by ▁trade ▁names ▁such ▁as ▁Luc ite , ▁Pers pe x ▁and ▁P lex ig las . ▁It ▁serves ▁as ▁a ▁st ur dy ▁substitute ▁for ▁glass ▁for ▁items ▁such ▁as ▁aqu ari ums , ▁motor cycle ▁hel met ▁vis ors , ▁aircraft ▁windows , ▁view ing ▁ports ▁of ▁subm ers ibles , ▁and ▁l enses ▁of ▁exterior ▁lights ▁of ▁autom ob iles . ▁It ▁is ▁extens ively ▁used ▁to ▁make ▁signs , ▁including ▁letter ing ▁and ▁log os . ▁In ▁medicine , ▁it ▁is ▁used ▁in ▁b one ▁c ement ▁and ▁to ▁replace ▁eye ▁l enses . ▁Ac ry lic ▁paint ▁consists ▁of ▁PM MA ▁particles ▁susp ended ▁in ▁water . ▁ ▁A BS ▁Ac ry lon it rile ▁but ad iene ▁sty rene ▁( AB S ) ▁is ▁a ▁ter pol ym er ▁synth es ized ▁from ▁sty rene ▁and ▁ac ry lon it rile ▁in ▁the ▁presence ▁of ▁poly but ad iene . ▁A BS ▁is ▁a ▁light - weight ▁material ▁that ▁exhib its ▁high ▁impact ▁resistance ▁and ▁mechanical ▁t ough ness . ▁It ▁pos es ▁few ▁ris ks ▁to ▁human ▁health ▁under ▁normal ▁handling . ▁It ▁is ▁used ▁in ▁many ▁consumer ▁products , ▁such ▁as ▁to ys , ▁app li ances , ▁and ▁tele ph ones . ▁ ▁N yl on ▁N yl on ▁belongs ▁to ▁a ▁class ▁of ▁polym ers