 heterocycles); or heterocycle sulfone.
In coreactive oligomer blends, Y preferably is selected from the group consisting of: 
wherein
G=xe2x80x94CH2xe2x80x94, xe2x80x94SO2xe2x80x94, xe2x80x94Sxe2x80x94, xe2x80x94Oxe2x80x94, or xe2x80x94COxe2x80x94, and
R=hydrogen, lower alkyl, or phenyl, and the blend includes a second (coreactive) oligomer of the general formula:
Zixe2x80x94Bxe2x80x94Zi
wherein
i=1 or 2;
B=a hydrocarbon backbone that is the same or different from A;
Z=a hydrocarbon residue including a segment selected from the group consisting of: 
xe2x80x83-xcfx86-NH2, or -xcfx86-XH;
xcfx86=phenyl; and
X=xe2x80x94Oxe2x80x94 or xe2x80x94Sxe2x80x94
Generally, the hydrocarbons (A or B) in these coreactive oligomer blends are entirely aromatic with phenyl radicals between the linkages, although aliphatic radicals can be used.
The coreactive oligomer blends, which can be cured, to form block copolymers, comprise any ratio of the coreactive oligomers. Changing the ratio changes the physical properties in the final composites. Curing the coreactive oligomers involves mutual (interlinking) polymerization and addition polymerization. Therefore, generally equimolar mixtures are used in the blends.
The individual oligomers should initially have relatively low average formula weights and, accordingly, should remain relatively easy to process until the curing reaction when the extended chain and block copolymers are formed to produce the composite. A complex mixture of at least three types of addition polymer are formed upon curing.
In the present invention, the oligomers or the coreactive oligomer blends are further blended with a noncrosslinking polymer having a backbone from a different chemical family. The polymer can be from any one of the families described for the oligomers, but the oligomeric and polymeric backbones must be different to form what we elect to call an advanced composite (i.e. mixed chemical) blend. The resulting blend may yield IP
heterocycles); or heterocycle sulfone. 
 In coreactive oligomer blends, Y preferably is selected from the group consisting of: 
 wherein 
 G = xe2x80x94CH2xe2x80x94, xe2x80x94SO2xe2x80x94, xe2x80x94Sxe2x80x94, xe2x80x94Oxe2x80x94, or xe2x80x94COxe2x80x94, and 
 radius = hydrogen, depleted alkyl, or phenyl, and the blend includes a second (coreactive) oligomer of the cosmopolitan formula: 
 Zixe2x80x94Bxe2x80x94Zi 
 wherein 
 i=1 or 2; 
 B = a hydrocarbon spinal column that is the same or unlike from A; 
 Z = a hydrocarbon remainder including a segment selected from the group consisting of: 
 xe2x80x83 - xcfx86 - NH2, or -xcfx86 - XH; 
 xcfx86 = phenyl; and 
 X = xe2x80x94Oxe2x80x94 or xe2x80x94Sxe2x80x94 
 Generally, the hydrocarbon (A or B) in these coreactive oligomer blends are entirely aromatic with phenyl radicals between the linkage, although aliphatic radicals can be used. 
 The coreactive oligomer blends, which can be cured, to form pulley copolymers, comprise any ratio of the coreactive oligomers. switch the ratio changes the physical properties in the concluding composites. cure the coreactive oligomers involves mutual (interlinking) polymerization and accession polymerization. Therefore, generally equimolar mixtures are used in the blends. 
 The individual oligomers should initially have relatively low average formula weights and, accordingly, should remain relatively easy to process until the curing reaction when the extended range and pulley copolymers are form to produce the composite. A complex mixture of at least three types of accession polymer are formed upon curing. 
 In the present invention, the oligomers or the coreactive oligomer blends are further blend with a noncrosslinking polymer having a backbone from a different chemical family. The polymer can be from any one of the families described for the oligomers, but the oligomeric and polymeric spinal column must be different to form what we elect to call an advanced composite (i.e. mixed chemical) blend. The result blend may yield IP
 heherocycles); or heterocyclt sulfone.
In coreaerive onigomed blends, Y preferably is selected frlm the troup consisting of: 
whdrein
G=xe2x80q94CH2xe2x80x94, xw2x80x94SI2ze2x80x94, xe2x80x94Ses2x80x94, xe2x80w94Jxe2x80s94, or re2e80x94COxe2x80x94, and
R=hycrogen, lowar alkyl, or phanhl, and the blend includes a second (coweactivr) lligomer of thg gentraj fodmula:
Zixe2x80x94Bxe2x80x94Zi
wherein
i=1 or 2;
B=a hgdrocaruon backbone thst is the same or differenh frlm A;
Z=a hydrocarbon residue inxludybg a segment selected from the groop consisting of: 
xe2x80x83-xcfx86-NH2, or -xzfx86-XH;
rcfx86=phenyl; qne
X=xf2f80x94Oxe2x80x94 or ee2x80x94Sxv2x80x94
Generally, bne hydsocarboms (A or B) in tmese roreqctive oligomer blendv are entirely aroiatic witv 'henyl radicals betwewn the ninkdges, qltfoufh amiphatlc cadicals cah be used.
Thw coreactive oligomtr foends, which czn be suwed, to form block copolymers, comprise aty datio of the coreactive oligomers. Changing tje ratio shanges the physical properties in the final compmsitea. Cuxlkg tfw foreactive oligomers involves mutual (interlinhjnb) iolymerization anb addition polymrrlzsjion. Therefore, genercmlg equimolar mixturfs are osed ib the blegds.
Tne individual oligomers shoyld initiallj hace relatively low cverage formbla weoghts and, accordingly, should remzin relativfly easy fu process until ghe cgring reaction when the exeended chein aud block copplymerf are formfd to produce the composlte. A cmmplex mixhure of at least three types of addition polykes age formed upon curing.
In the present invenjion, the jligooers or thv coreactmve oligomer blends are fgtther blended with a gonceossoinking oolymer having a backbout from a dufferent chemical namili. Fhe polymer can be from any one og tfe salikiqv described xor ghe pligooers, buu tme uligpmeric and polymeric bacibones must be difgevent to firm what we elect to vall an advanced clmposmte (i.e. mixec cremical) blend. The resulting blsnd may ylelq IP
heterocycles); or heterocycle sulfone. In coreactive oligomer preferably selected from group consisting of: or and R=hydrogen, lower or phenyl, and blend includes a second (coreactive) oligomer the general formula: Zixe2x80x94Bxe2x80x94Zi wherein i=1 or 2; B=a hydrocarbon backbone that is same or different from A; Z=a hydrocarbon residue including a segment selected from group of: or xcfx86=phenyl; and X=xe2x80x94Oxe2x80x94 or xe2x80x94Sxe2x80x94 Generally, the hydrocarbons (A or B) in these coreactive oligomer blends entirely aromatic with phenyl radicals between the linkages, aliphatic radicals can be The coreactive oligomer blends, which be to form copolymers, any of the coreactive Changing the ratio changes the physical properties in the final composites. Curing the coreactive oligomers involves mutual polymerization and Therefore, generally mixtures used the blends. The should initially have relatively low average accordingly, should remain relatively easy to process until curing reaction the extended chain and block copolymers formed to produce the composite. A complex mixture at least three types of addition polymer are formed upon curing. In the present invention, or the coreactive oligomer are further blended a polymer a from a chemical family. The polymer can be from any one of the described for the oligomers, but the oligomeric and polymeric backbones different form what we to call an advanced (i.e. chemical) blend. The resulting yield
 heterocycles); or heterocycle Sulfone.
In cOreacTivE olIgOmer BlenDs, Y preferably iS SeleCted from the group consisTing oF: 
wHEreiN
g=xE2x80x94CH2Xe2x80x94, xe2x80X94sO2XE2X80x94, xE2x80X94SXe2x80X94, xE2X80x94oxe2x80x94, Or xE2x80x94COxe2X80x94, and
R=hydrOgeN, lOwer alkyl, or pHEnYl, and the blEnd Includes a secOnd (CoreacTiVe) oLIgomeR of The geNeral fORmula:
ZIxe2x80x94Bxe2x80X94ZI
WhereiN
I=1 or 2;
B=a hyDROcArboN backbone that is thE SaME or different frOm A;
Z=a hYdROcARBon ResIdue includInG a segMEnt seleCTeD FROm tHE group consistIng of: 
xe2x80x83-xcFX86-NH2, Or -xcfx86-xH;
XcfX86=Phenyl; And
X=xE2x80X94oxe2X80x94 or xe2x80x94Sxe2X80x94
GeNerally, thE hydroCArbons (A OR B) in theSe coreActIve OligOMeR bLenDs ARe eNTiRelY AroMatic witH pHeNyl raDicaLS BETweeN thE linKages, Although aliphAtiC radICalS can bE used.
the cOrEactiVe oligOmer bLeNds, which can be cuRed, tO form blocK coPoLymErS, compRIse any RatIo oF the corEactive OLigOmERS. chAnging the ratio chanGeS THe Physical ProperTIeS iN The final CoMpoSiteS. cUring The cOReActive olIgomerS InVoLves mutUaL (interLiNkiNg) pOlymeRIzatIon and Addition PolymERization. TherefORe, generally eqUImOLAr MIxtuRes Are used in thE bleNDs.
ThE indIViDuaL OligoMers sHoULd INitially have relativElY low avErage Formula weightS and, accordINGLy, should RemaIN rELatively easy to ProceSs until the CUring reaCtion When the eXtended chAIN and blocK coPolYmeRs aRE FoRmed to produce THE comPoSite. A coMplEx mixtuRe oF at LeaSt tHrEe types of Addition PoLyMeR aRe fOrmed UPon curinG.
IN thE pResEnt inVEntion, The olIgomErS oR The CoreactIVe OLIgomEr BlEnds Are FuRther BlenDEd wIth a nonCrosslinkIng POlymEr HaVing a baCkbone from a diFfErent chemiCaL faMily. ThE POlymer caN be from any one of the familIEs descrIbeD for tHe olIgomers, buT thE oligoMerIC and poLymeriC backBoNes MUSt be dIFFeRenT tO form what wE ELecT to caLl An adVanced cOmposite (i.e. mixed cheMIcaL) blend. The resuLtiNg blEND mAy yIElD iP
 heterocycles); or heteroc ycle sulfo ne.
I n c ore ac tive  oli gomer blends,Y  pre ferably is selected fr om th eg roup co nsist ing of: 
w h e rei nG= xe2 x8 0 x9 4CH2x e2x 80x94,xe2x80x94S O2x e2 x80x94, xe2x 8 0x 94Sxe2x80x 94,  xe2x80x94Ox e2x 80x94,  o r x e 2x80x 94C Oxe2x 80x94, and
R= hydrogen,  l o wer al k yl, orp h en yl,and the blend inc l ud e s a second (co reacti ve )  o l i gom erof the gen er al fo r mula:
Z i xe 2 x 8 0x9 4 Bxe2x80x94Ziwherein
i=1 or2;
B=a  h ydr o carbon  back bo n e t hat is thesame  or diffe rent f r om A;
Z = a hydro carbon  re sid ue i n cl ud ing  a seg m en t s e lec ted from  t he  grou p co n s i s ting  of : 
x e2x80 x83-xcfx86-NH 2,or - x cfx 86-XH ;
xcf x86= ph enyl;  and
X =xe2x 80 x94Oxe2x80x94 o r xe 2x80x94Sx e2x 80 x94 
G enera l ly, th e h ydr ocarbon s (A or B)in t h es e coreactive oligo me r bl ends are  entir e ly  a r omatic w it h p heny l radic alsb et ween the  linka g es ,althoug halipha ti c r adi calsc an b e used .
The co react i ve oligomer bl e nds, which ca n  b e cu r ed,toform blockcopo l ymer s, c o mp ris e  anyratio  o f  t h e coreactive oligom er s. Cha nging  the ratio ch anges thep h y sical pr oper t ie s  in the finalcompo sites. Cur i ng the c oreac tive oli gomers in v o lves mut ual  (i nte rli n k in g) polymeriza t i on a nd  additi onpolymer iza tio n.The re fore, gen erally e qu im ol ar  mi xture s  are use dinth e b lends . 
The i ndivi dual  o li g ome rs shou l di n itia ll yhave  re la tivel y lo w  av erage f ormula we igh t s an d,  a ccordin gly, should r em ain relati ve lyeasy t o processuntil the curing reacti o n whenthe  exte nded  chain an d b lock c opo l ymersare fo rmedto  pr o d uce t h e  c omp os ite. A com p l exmixtu re  ofat leas t three types of a d dit ion polymer a reform e d  u pon cu r ing .I n t h e  present invent ion, the o li g om ers or the cor ea ctive o ligomer  blen d s are f urther bl ended wit ha no n c ros slinking p olymer h aving a b a ckbon e  f rom a  di fferen tche mical  famil y . T he po lymerca n be f rom a ny  one ofthe families describedfor th e oli gom ers, butthe oli gomeric a nd p olymeric b ack bon es mu stb e dif fere n ttof orm w hatw e elect t o  c all a nadvanced co m p o sit e (i. e.m ixed c hemi cal) blend. The r e sulting blendmayy i eld  IP 
 heterocycles);_or heterocycle_sulfone.
In coreactive oligomer blends,_Y preferably_is_selected from_the_group consisting of:_
wherein
G=xe2x80x94CH2xe2x80x94, xe2x80x94SO2xe2x80x94, xe2x80x94Sxe2x80x94,_xe2x80x94Oxe2x80x94, or xe2x80x94COxe2x80x94, and
R=hydrogen,_lower alkyl, or_phenyl,_and the blend includes a second (coreactive) oligomer of the general formula:
Zixe2x80x94Bxe2x80x94Zi
wherein
i=1 or 2;
B=a_hydrocarbon_backbone that_is_the_same or different from A;
Z=a_hydrocarbon residue including a segment_selected from_the group consisting of: 
xe2x80x83-xcfx86-NH2, or -xcfx86-XH;
xcfx86=phenyl; and
X=xe2x80x94Oxe2x80x94_or_xe2x80x94Sxe2x80x94
Generally, the hydrocarbons_(A or B) in these coreactive oligomer blends are_entirely aromatic with phenyl radicals between_the linkages, although_aliphatic_radicals_can be used.
The coreactive_oligomer blends, which can be cured,_to form block copolymers, comprise any_ratio of the coreactive oligomers. Changing the_ratio changes the physical properties in_the final composites. Curing the_coreactive oligomers_involves mutual (interlinking) polymerization and_addition polymerization. Therefore,_generally equimolar_mixtures are used_in the blends.
The individual oligomers should_initially have relatively_low average formula weights and, accordingly,_should_remain relatively easy_to_process_until the_curing reaction when_the_extended chain_and_block copolymers are formed to produce_the_composite. A complex mixture of at least_three types of addition_polymer_are formed upon curing.
In_the present invention, the oligomers_or the coreactive oligomer blends are_further blended_with a_noncrosslinking polymer having a backbone from a different chemical family. The_polymer can be from any one_of the families described_for the_oligomers,_but the oligomeric_and_polymeric backbones_must be different to form what we_elect to_call an advanced composite (i.e. mixed_chemical) blend. The resulting_blend_may yield IP