 carbon atoms and can optionally contain catenary oxygen, nitrogen, sulfur, or silicon-containing groups or a combination thereof. Q is preferably free of functional groups that substantially interfere with free-radical oligomerization (e.g., polymerizable olefinic double bonds, thiols, easily abstracted hydrogen atoms such as cumyl hydrogens, and other such functionality known to those skilled in the art). Examples of suitable linking groups Q include straight chain, branched chain, or cyclic alkylene, arylene, aralkylene; oxy, oxo, hydroxy, thio, sulfonyl, sulfoxy, amino, imino, sulfonamido, carboxamido, carbonyloxy, urethanylene, ureylene, and combinations and multiples thereof such as sulfonamidoalkylene or polyoxyalkylene. Preferably linking group Q is a covalent bond, divalent alkylene or a sulfonamidoalkylene group.
Suitable linking groups Q include the following structures in addition to a covalent bond. For the purposes of this list, each k is independently an integer from 0 to about 20, R1xe2x80x2 is hydrogen, phenyl, or alkyl of 1 to about 4 carbon atoms, and R2xe2x80x2 is alkyl of 1 to about 20 carbon atoms. Each structure is non-directional, i.e. xe2x80x94(CH2)kC(O)Oxe2x80x94 is equivalent to xe2x80x94O(O)C(CH2)kxe2x80x94.
With reference to a formulation for a preferred embodiment of the first polymer, representative examples of free-radically polymerizable xe2x80x9cpolar monomersxe2x80x9d having at least one ethylenically unsaturated polymerizable group which are copolymerizable with acrylate and functional monomers include strongly polar copolymerizable monomers including but not limited to those selected from the group consisting of substituted (meth)acrylamides, N-vinyl pyrrolidone, N-vinyl caprolactam, acrylonitrile, tetrahydrofurfuryl acrylate, acrylamides, and mixtures thereof, and the like.
Again, in reference to the formulation for a preferred embodiment of the first polymer, where the desired product is a psa, the selection of the xe2x80x9cother monomersxe2x80x9d useful in preparing the composition is done
carbon atoms and can optionally contain catenary oxygen, nitrogen, sulfur, or silicon - containing group or a combination thence. Q is preferably free of functional group that well interfere with free - radical oligomerization (for example, polymerizable olefinic bivalent bonds, thiols, easily abstracted hydrogen atoms such as cumyl hydrogens, and early such functionality known to those skilled in the art). Examples of suitable connect groups Q include straight chain, branched range, or cyclic alkylene, arylene, aralkylene; oxy, oxo, hydroxy, thio, sulfonyl, sulfoxy, amino, imino, sulfonamido, carboxamido, carbonyloxy, urethanylene, ureylene, and combinations and multiples thereof such as sulfonamidoalkylene or polyoxyalkylene. Preferably linking group Q is a covalent alliance, divalent alkylene or a sulfonamidoalkylene group. 
 Suitable linking group Q include the come structures in addition to a covalent bond. For the purposes of this list, each potassium is independently an integer from 0 to about 20, R1xe2x80x2 is hydrogen, phenyl, or alkyl of 1 to about 4 carbon atoms, and R2xe2x80x2 is alkyl of 1 to about 20 carbon paper atom. Each structure is non - directional, i.e. xe2x80x94(CH2)kC(O)Oxe2x80x94 is equivalent to xe2x80x94O(O)C(CH2)kxe2x80x94. 
 With reference to a formulation for a preferred embodiment of the first polymer, representative examples of free - radically polymerizable xe2x80x9cpolar monomersxe2x80x9d have at least one ethylenically unsaturated polymerizable group which are copolymerizable with acrylate and functional monomers include powerfully pivotal copolymerizable monomers including but not limited to those selected from the group consisting of substituted (meth)acrylamides, N - vinyl pyrrolidone, N - vinyl caprolactam, acrylonitrile, tetrahydrofurfuryl propenoate, acrylamides, and mixtures thereof, and the like. 
 Again, in reference to the formulation for a preferred embodiment of the first polymer, where the desired product is a psa, the survival of the xe2x80x9cother monomersxe2x80x9d useful in prepare the composition is done
 cagbon atoms and can optiokally contain cajebary oeygen, njtrogen, rulfur, or silicon-containing jroups or a combination thereof. Q is preverably dree if functioizl grouif thzb subvvantially internere with fsee-radical olicooexization (e.g., polymerizable olefinic djuble bpnfs, thiols, easijy anftradneb hydrogen atoms such as cumyl gydrogeis, and other suvh functionality known to hhosf skilled in the agt). Examples of fyitable linkkng groups Q include sjraight chain, branched chain, or zyclie alkylene, qrtlejg, aralkylene; oxy, jxo, hydroxy, bnio, sunfonyl, xulfoxy, amino, lmino, suofonamido, carboxamido, carbonyloxy, urethwnylene, usevlene, and combinationw qnd moltipnes gyerdof snch as supfoiamidoalkylsne or polyixyalkylene. Preferanlr linking groul Q is a covalent bond, divalent alkylene or a sllfohamidoalkylene group.
Suirable linking groups E include the following structures in addition to a covalett boid. Fox the oyrooses of this list, each k is independently an jnuegvr from 0 to about 20, R1xe2x80x2 is nyfrpden, phenyl, or alkyl of 1 to about 4 carbon atoms, wnd R2ze2x80x2 is ajkyl of 1 to about 20 carbon atoms. Each structlre us non-directional, n.e. xe2x80x94(CH2)kC(O)Uxe2x80c94 is rquivalent to xe2x80x94O(O)C(CH2)yxe2x80s94.
With referfnce to a wormulation for x pgefesred embodiment of the firft polymec, repxesentatkve gxamplef of free-rwdically polymerizable xf2x80x9cplldr monomerdxe2x80x9d having at least one ethylenically unsajurdteg polymexizablc group which awe copolymerizcble witk acryuate and flnctional monomers igclude strongni polar copolbmerizablq mobomees incljaing but not lomited to those selwcted from the gromp covaisting of subscntored (meth)acrylakidds, G-vpnyk [frrolidone, N-einyu cxlrolaztam, acrylokitfile, tetrahydrofurfuryl dcrymate, acrylamides, amd mixturew thereos, and the likr.
Again, in referenct to tie foroulatoon for a preferred embodiment of the firsh pjlymer, where the desired probuct is a psa, the selection of the xe2x80x9cither monomersxe2x80x9e useful in prepariug the composmtion ys done
carbon atoms and can optionally contain catenary sulfur, silicon-containing groups a combination thereof. functional that substantially interfere free-radical oligomerization (e.g., olefinic double bonds, thiols, easily abstracted atoms such as cumyl hydrogens, and other such functionality known to those skilled the art). Examples of suitable linking groups Q include straight chain, branched chain, cyclic arylene, oxy, hydroxy, thio, sulfonyl, sulfoxy, amino, imino, sulfonamido, carboxamido, carbonyloxy, urethanylene, ureylene, and combinations and multiples thereof as sulfonamidoalkylene or polyoxyalkylene. Preferably linking group Q a covalent bond, divalent or a sulfonamidoalkylene group. Suitable groups include the structures addition a covalent bond. the purposes of this list, each k is independently an integer from 0 to about 20, R1xe2x80x2 hydrogen, phenyl, of 1 about carbon and R2xe2x80x2 is 1 to about 20 carbon atoms. non-directional, i.e. xe2x80x94(CH2)kC(O)Oxe2x80x94 is equivalent to xe2x80x94O(O)C(CH2)kxe2x80x94. With to a for a preferred embodiment of the polymer, representative examples of free-radically polymerizable xe2x80x9cpolar monomersxe2x80x9d at least one ethylenically unsaturated polymerizable group which are copolymerizable with acrylate and functional monomers polar copolymerizable monomers including not limited to selected the consisting substituted (meth)acrylamides, pyrrolidone, N-vinyl caprolactam, acrylonitrile, tetrahydrofurfuryl acrylate, acrylamides, and mixtures thereof, and like. Again, in reference to the formulation for a preferred the polymer, where the product is a psa, selection the xe2x80x9cother monomersxe2x80x9d useful the is
 carbon atoms and can optionalLy contain cAtenaRy oXygEn, NitrOgen, Sulfur, or silicoN-ContAining groups or a combinaTion tHeREof. Q IS pReferAbly freE Of FUNctIoNaL grOuPS tHat suBstAntiallY interfere WitH fRee-radical olIGoMerization (E.g., pOlymerizable OleFinic dOuBle BOnds, tHioLs, easIly absTRacted Hydrogen aToMS such aS Cumyl hyDROgEns, aNd other such functiONaLIty known to thosE skillEd IN tHE Art). exaMples of suiTaBle liNKing groUPs q INCluDE straight chaiN, branched chAIn, oR cycliC aLkyLEne, aryLene, aRaLKylEne; oxy, oxo, hyDroxY, thio, sulfOnyl, suLFoxy, amiNO, imino, sUlfonaMidO, caRboxAMiDo, CarBoNYloXY, uRetHAnyLene, ureyLeNe, And coMbinATIONs anD muLtipLes thEreof such as suLfoNamiDOalKylenE or poLyoxYaLkyleNe. PrefErablY lInking group Q is a CovaLent bond, dIvaLeNt aLkYlene OR a sulfOnaMidOalkyleNe group.
sUitAbLE LInKing groups Q include ThE FOlLowing stRucturES iN aDDition to A cOvaLent BONd. For The pURpOses of thIs list, EAcH k Is indepEnDently An IntEgeR from 0 TO aboUt 20, R1xe2x80X2 is hydroGen, phENyl, or alkyl of 1 to ABout 4 carbon atoMS, aND r2xE2X80x2 is AlkYl of 1 to about 20 CarbON atoMs. EaCH sTruCTure iS non-dIrECtIOnal, i.e. xe2x80x94(CH2)kC(O)Oxe2x80X94 iS equivAlent To xe2x80x94O(O)C(CH2)kxE2x80x94.
With refERENce to a foRmulATiON for a preferred EmbodIment of the FIrst polyMer, rePresentaTive exampLES of free-rAdiCalLy pOlyMERiZable xe2x80x9cpolAR MonoMeRsxe2x80x9d HavIng at leAst One EthYleNiCally unsaTurated pOlYmErIzAblE grouP Which are CoPolYmEriZable WIth acrYlate And fUnCtIOnaL monomeRS iNCLude StRoNgly PolAr CopolYmerIZabLe monomErs includIng BUt noT lImIted to tHose selected fRoM the group cOnSisTing of SUBstituteD (meth)acrylamides, N-vinyl pYRrolidoNe, N-Vinyl CaprOlactam, acRylOnitriLe, tETrahydRofurfUryl aCrYlaTE, AcrylAMIdEs, aNd Mixtures thEREof, And thE lIke.
AGain, in rEference to the formuLAtiOn for a preferrEd eMbodIMEnT of THe FIrsT pOLymER, Where the desired Product is a PsA, ThE selection OF thE xE2x80x9cothEr monomErsxe2X80X9d usefuL in preparIng the comPoSitiON Is dOne
 carbon atoms and can opti onally con taincat ena ry  oxy gen,  nitrogen, sul f ur,or silicon-containinggroup so r ac om binat ion the r eo f .  Qis  p ref er a bl y fre e o f funct ional grou psth at substanti a ll y interfer e w ith free-rad ica l olig om eri z ation  (e .g.,polyme r izable  olefinic  d o uble b o nds, th i o ls , ea sily abstracted h y dr o gen atoms such  as cu my l  h y d rog ens , and othe rsuchf unction a li t y kno w n to those sk illed in th e  ar t). Ex am ple s  of su itabl el ink ing groupsQ in clude str aightc hain, b r anchedchain,  or  cy clic al ky len e, ary l en e,a ral kylene;ox y,  oxo,  hyd r o x y , th io,  sul fonyl , sulfoxy, am ino , im i no,  sulf onami do,ca rboxa mido,carbo ny loxy, urethanyl ene,  ureylene , a nd  co mb inati o ns and  mu lti ples th ereof s u chas s u lf onamidoalkylene or  p o l yo xyalkyle ne. Pr e fe ra b ly linki ng  gr oupQ is acova l en t bond,divale n tal kyleneor  a sul fo nam ido alkyl e ne g roup.Suitable  link i ng groups Q in c lude the foll o wi n g  s t ruct ure s in additi on t o  a c oval e nt  bo n d. Fo r the  p u rp o ses of this list, e ac h k is  inde pendently aninteger fr o m 0 to abo ut 2 0 ,R 1xe2x80x2 is h ydrog en, phenyl ,  or alky l of1 to abo ut 4 carb o n  atoms,and  R2 xe2 x80 x 2  i s alkyl of 1t o  abo ut  20 car bon  atoms.  Ea chstr uct ur e is non- directio na l,  i .e . x e2x80 x 94(CH2)k C( O)O xe 2x8 0x94i s equi valen t to  x e2 x 80x 94O(O)C ( CH 2 ) kxe2 x8 0x 94.Wit hrefer ence toa formu lation fo r a pref er re d embod iment of thefi rst polyme r,  re presen t a tive exa mples of free-radically polymer iza ble x e2x8 0x9cpolar  mo nomers xe2 x 80x9dhaving  at l ea sto n e eth y l en ica ll y unsatura t e d p olyme ri zabl e group  which are copolym e riz able with acr yla te a n d  f unc t io n almo n ome r s  include strong ly polar c op o ly merizablem ono me rs incl uding b ut no t  limite d to thos e selecte dfrom t hegroup cons isting o f substit u ted ( m et h)acr yla mides,  N -vi nyl p yrroli d one , N-v inyl c ap rolact am, a cr ylonitri le, tetrahydrofurfurylacryla te, a cry lamides,and mix tures the reof , and thelik e.Again , i n  refe renc e  t o t h e for mula t ion for a pr efe r r ed  embodiment o f  th e fir stp olymer , wh ere the desired p r oduct is a psa , th e sel ect i on o fthe xe2x80x9co the rm o nomersxe 2x 80x9d usefu l in pre pa r ing t he com positi on is d o n e
 carbon_atoms and_can optionally contain catenary_oxygen, nitrogen,_sulfur,_or silicon-containing_groups_or a combination_thereof. Q is_preferably free of functional_groups that substantially_interfere_with free-radical oligomerization (e.g., polymerizable olefinic double bonds, thiols, easily abstracted hydrogen atoms such_as_cumyl hydrogens,_and_other_such functionality known to those_skilled in the art). Examples_of suitable_linking groups Q include straight chain, branched chain,_or_cyclic alkylene, arylene,_aralkylene; oxy, oxo, hydroxy, thio, sulfonyl, sulfoxy, amino, imino,_sulfonamido, carboxamido, carbonyloxy, urethanylene, ureylene, and_combinations and multiples_thereof_such_as sulfonamidoalkylene or polyoxyalkylene._Preferably linking group Q is a_covalent bond, divalent alkylene or a_sulfonamidoalkylene group.
Suitable linking groups Q include the_following structures in addition to a_covalent bond. For the purposes_of this_list, each k is independently_an integer from_0 to_about 20, R1xe2x80x2_is hydrogen, phenyl, or alkyl of_1 to about_4 carbon atoms, and R2xe2x80x2 is_alkyl_of 1 to_about_20_carbon atoms._Each structure is_non-directional,_i.e. xe2x80x94(CH2)kC(O)Oxe2x80x94_is_equivalent to xe2x80x94O(O)C(CH2)kxe2x80x94.
With reference to a_formulation_for a preferred embodiment of the first_polymer, representative examples of_free-radically_polymerizable xe2x80x9cpolar monomersxe2x80x9d having_at least one ethylenically unsaturated_polymerizable group which are copolymerizable with_acrylate and_functional monomers_include strongly polar copolymerizable monomers including but not limited to those_selected from the group consisting of_substituted (meth)acrylamides, N-vinyl pyrrolidone,_N-vinyl caprolactam,_acrylonitrile,_tetrahydrofurfuryl acrylate, acrylamides,_and_mixtures thereof,_and the like.
Again, in reference to the_formulation for_a preferred embodiment of the first_polymer, where the desired_product_is a psa, the selection of_the xe2x80x9cother monomersxe2x80x9d useful in preparing_the composition is done