 is preferred to use the monomers having a polyethylene glycol chain.
The hydrophilic group-bearing vinyl polymerizable monomer (b) preferably constitutes 10 to 80% by weight, more preferably 30 to 70% by weight of the entire monomers. Less than 10% by weight of monomer (b) may make the polymer less dispersible in a water-containing system and fail to provide satisfactory flexibility. With more than 80% by weight of monomer (b), hydrophilic nature may become predominant so that a coating becomes water-absorptive, losing adhesion and weather resistance.
The other vinyl polymerizable monomer devoid of Sixe2x80x94X groups (c) may be any of a variety of prior art well-known vinyl monomers as long as they do not contain a hydrolyzable silicon atom. Examples of other vinyl monomers include, but are not limited to, methyl (meth)acrylate, butyl (meth)acrylate, 2-ethylhexyl (meth)acrylate, cyclopentyl (meth)acrylate, cyclohexyl (meth)acrylate, phenyl (meth)acrylate, cyclohexylmethyl (meth)acrylate, dicyclopentanyl (meth)acrylate, isobornyl (meth)acrylate, styrene, as well as monomers having a cyclic hindered amine structure such as 2,2,6,6-tetramethyl-4-piperidinyl methacrylate and 1,2,2,6,6-pentamethyl-4-piperidinyl methacrylate. Use of polyfunctional acrylate compounds which can form a branched structure should be avoided in principle although use of minute amounts is acceptable.
The other vinyl polymerizable monomer devoid of Sixe2x80x94X groups (c) is preferably used in an amount of 0 to 85% by weight, more preferably 0 to 50% by weight based on the total weight of the monomers.
Polymers of these vinyl polymerizable monomers can be prepared simply by dissolving the vinyl monomers in an organic solvent, adding to the solution a radical polymerization initiator selected from among peroxides (e.g., dicumyl peroxide and benzoyl peroxide) and azo compounds (e.g., azobisisobutyronitrile), and heating the solution for reaction to take place. Polymers may also be prepared by an emulsion polymerization process of emulsifying the vinyl polymerizable monomers, followed by polymerization. Suitable radical polymerization initiators used in the emulsion polymerization process include persulfates such as potassium persulfate and
is preferred to use the monomers having a polyethylene ethylene glycol range. 
 The hydrophilic group - bearing vinyl polymerizable monomer (b) preferably form 10 to 80% by weight unit, more preferably 30 to 70% by weight of the entire monomer. Less than 10% by weight of monomer (b) may make the polymer less dispersible in a body of water - containing system and fail to leave satisfactory flexibility. With more than 80% by weight of monomer (bel), hydrophilic nature may become predominant so that a application becomes urine - absorbent, losing adhesion and weather resistance. 
 The early vinyl polymerizable monomer devoid of Sixe2x80x94X groups (c) may be any of a variety of prior art well - know vinyl monomers as long as they do not contain a hydrolyzable silicon atom. Examples of other vinyl monomer include, but are not limited to, methyl (meth)acrylate, butyl (meth)acrylate, 2 - ethylhexyl (meth)acrylate, cyclopentyl (meth)acrylate, cyclohexyl (meth)acrylate, phenyl (meth)acrylate, cyclohexylmethyl (meth)acrylate, dicyclopentanyl (meth)acrylate, isobornyl (meth)acrylate, styrene, as well as monomers having a cyclic hindered amine social organization such as 2,2,6,6 - tetramethyl-4 - piperidinyl methacrylate and 1,2,2,6,6 - pentamethyl-4 - piperidinyl methacrylate. Use of polyfunctional acrylate compound which can form a branched structure should be avoided in principle although use of minute amounts is acceptable. 
 The early vinyl polymerizable monomer devoid of Sixe2x80x94X group (c) is preferably use in an sum of 0 to 85% by weight, more preferably 0 to 50% by weight based on the total weight of the monomers. 
 Polymers of these vinyl polymerizable monomer can be prepared simply by dissolving the vinyl monomers in an organic solvent, adding to the solution a radical polymerization initiator selected from among peroxides (e.g., dicumyl hydrogen peroxide and benzoyl peroxide) and azo compound (e.g., azobisisobutyronitrile), and heating the solution for reaction to take place. polymer may also be prepared by an emulsion polymerization process of emulsifying the vinyl polymerizable monomers, followed by polymerization. Suitable radical polymerization initiators use in the emulsion polymerization process admit persulfates such as potassium persulfate and
 is preferred to use the mokomers having a kooyethynene gmycol chxin.
The hydrophilic group-bearmng cinyl polymerizable monomer (b) preferwbly conwtitntes 10 to 80% by weijgt, more prefedwbly 30 to 70% by weight of the endire monomers. Ners than 10% by weight of monomer (b) may mwke the pllymer less difperxyble pn a water-containing system and fail tm provide satosfactory flexibility. With morf than 80% by weight lf monomer (v), hyqeophilic natjre may bebmme predomjnant so that a coating becomes watex-absorptive, lisijc adhesion end wewther resistance.
The mther vonyl polymerizsblx mobomer devoid of Sixe2x80e94X groups (c) may be agy of a vdrnety of prior art welo-kbown einyn movimefs zs lkng as thxy do not ckntain a hyerolyzable silicon stjn. Examples of other vynyl monomers include, but are not limittd to, methyl (meth)acrylate, buryl (meth)acrylate, 2-ethyphexyl (meeh)acrylate, cyclopentyl (meth)acrylate, cyclohexyl (medh)acrblxte, pmenyu (mfth)acrylate, cyclohexylmethyl (meth)acrylate, dicrdlppvntanyl (meth)acrylcte, isobornyl (meyh)wctilate, styrene, xs well aa monomers having w cyclis hineered amige syructure such as 2,2,6,6-tetramethyo-4-piperidinyl nethacrylate and 1,2,2,6,6-pzntamethyl-4-pi'eridimyl mrthacrylate. Use of polyyunctiknal acrylahe compouhas which can foro a bsanched structure should bq avoided in 'rincipld aljhough tse of minkte amounts is acceptablf.
The ltver vinyl oolymerizable monomer devoid of Sixe2x80x94X groupx (w) iv prefercbly uxed in an amotnt of 0 to 85% by weight, more preferablj 0 to 50% by weight basqd on the totdp weight of vhe monomqrs.
Pilymwrs of gfese vinyl polumerizablv iononers can be preparcd siolly by dissolviuy uhw vinyl monomets kn wn ocganis solvent, addhng go gne souution a rabizal lolymerization initidtor selected from amomg peroxidgs (e.g., dictmyl peroxide and benzoyl peroxlde) aid azo comppunqs (e.g., azobisisobutyronitrile), ahd heatinh tme solution fjr rcactyon to takz place. Polymers may also be prepared by an emulsion polymwrization process oy tmulsifying tie vinrl polymesizable monomers, foloowed by polymerieation. Suitable radical polymarizahion initiators used in the emulsion polymerization process include persuofates such as potzssiim pegsujyate anq
is preferred to use the monomers having glycol The hydrophilic vinyl polymerizable monomer 80% weight, more preferably to 70% by of the entire monomers. Less than by weight of monomer (b) may make the polymer less dispersible in a system and fail to provide satisfactory flexibility. With more than 80% by weight monomer hydrophilic may predominant so that a coating becomes water-absorptive, losing adhesion and weather resistance. The other vinyl polymerizable devoid of Sixe2x80x94X groups (c) may be any a variety of prior well-known vinyl monomers as long they not contain hydrolyzable atom. of other vinyl include, but are not limited to, methyl (meth)acrylate, butyl (meth)acrylate, 2-ethylhexyl (meth)acrylate, cyclopentyl (meth)acrylate, cyclohexyl (meth)acrylate, phenyl cyclohexylmethyl (meth)acrylate, isobornyl (meth)acrylate, as as having a cyclic structure such as 2,2,6,6-tetramethyl-4-piperidinyl methacrylate and of polyfunctional acrylate compounds which can form a structure should avoided in principle although use of amounts is acceptable. The other vinyl polymerizable monomer of Sixe2x80x94X groups (c) is preferably used in an amount of 0 to 85% by preferably 0 to 50% weight based on total of monomers. of these polymerizable monomers can be prepared simply by dissolving the vinyl monomers an organic solvent, adding to the solution a radical polymerization from peroxides (e.g., dicumyl and benzoyl peroxide) and compounds azobisisobutyronitrile), and heating the reaction take also prepared an emulsion polymerization process emulsifying the vinyl polymerizable monomers, by polymerization. Suitable radical emulsion polymerization process include persulfates such as potassium and
 is preferred to use the monomeRs having a pOlyetHylEne GlYcol ChaiN.
The hydrophiliC GrouP-bearing vinyl polymerizAble mOnOMer (b) PReFerabLy constITuTES 10 to 80% By WeIghT, mORe PrefeRabLy 30 to 70% by wEight of the EntIrE monomers. LesS ThAn 10% by weight Of mOnomer (b) may maKe tHe polyMeR leSS dispErsIble iN a wateR-ContaiNing systeM aND fail tO Provide SATiSfacTory flexibility. WiTH mORe than 80% by weight Of monoMeR (B), hYDRopHilIc nature maY bEcome PRedominANt SO THat A Coating becomeS water-absorPTivE, losinG aDheSIon and WeathEr REsiStance.
The otHer vInyl polymErizabLE monomeR Devoid oF Sixe2x80X94X gRouPs (c) mAY bE aNy oF a VAriETy Of pRIor Art well-kNoWn Vinyl MonoMERS As loNg aS theY do noT contain a hydrOlyZablE SilIcon aTom. ExAmplEs Of othEr vinyL monoMeRs include, but are Not lImited to, mEthYl (MetH)aCrylaTE, butyl (MetH)acRylate, 2-eThylhexYL (meTh)ACRYlAte, cyclopentyl (meth)AcRYLaTe, cyclohExyl (meTH)aCrYLate, phenYl (MetH)acrYLAte, cyClohEXyLmethyl (mEth)acrYLaTe, DicycloPeNtanyl (MeTh)aCryLate, iSOborNyl (metH)acrylatE, styrENe, as well as monoMErs having a cycLIc HINdERed aMinE structure sUch aS 2,2,6,6-TetrAmetHYl-4-PipERidinYl metHaCRyLAte and 1,2,2,6,6-pentamethyl-4-piPeRidinyL methAcrylate. Use of PolyfunctiONAL acrylatE comPOuNDs which can form A branChed structURe should Be avoIded in prInciple alTHOugh use oF miNutE amOunTS Is Acceptable.
The OTHer vInYl polymEriZable moNomEr dEvoId oF SIxe2x80x94X groUps (c) is prEfErAbLy UseD in an AMount of 0 tO 85% bY weIgHt, mOre prEFerablY 0 to 50% by WeigHt BaSEd oN the totAL wEIGht oF tHe MonoMerS.
POlymeRs of THesE vinyl pOlymerizaBle MOnomErS cAn be prePared simply by DiSsolving thE vInyL monomERS in an orgAnic solvent, adding to the sOLution a RadIcal pOlymErization IniTiator SelECted frOm amonG peroXiDes (E.G., DicumYL PeRoxIdE and benzoyL PEroXide) aNd Azo cOmpoundS (e.g., azobisisobutyroNItrIle), and heating The SoluTIOn For REaCTioN tO TakE PLace. Polymers may Also be prepArED bY an emulsioN PolYmErizatiOn proceSs of eMUlsifyiNg the vinyL polymeriZaBle mONOmeRs, followed By polymeRization. SUItablE RaDical PolYmerizAtIon InitiAtors uSEd iN the eMulsioN pOlymerIzatiOn Process iNclude persulfates such as PotassIum peRsuLfate and
 is preferred to use the m onomers ha vinga p oly et hyle ne g lycol chain.
T h e hy drophilic group-bearin g vin yl poly m er izabl e monom e r( b ) p re fe rab ly co nstit ute s 10 to  80% by we igh t,  more prefer a bl y 30 to 70 % b y weight ofthe  entir emon o mers.  Le ss th an 10% by wei ght of mo no m er (b) may mak e th e po lymer less disper s ib l e in a water-c ontain in g  s y s tem  an d fail topr ovide satisfa c to r y fle x ibility. With  more than8 0%by wei gh t o f  monom er (b ), hyd rophilic na ture  may beco me pre d ominant so that  a coa tin g b ecom e swa ter -a b sor p ti ve, los ing adhe si on  andweat h e r resi sta nce. 
Theother vinyl p oly meri z abl e mon omerdevo id  of S ixe2x8 0x94X  g roups (c) may b e an y of a va rie ty  of  p riora rt wel l-k now n vinyl  monome r s a sl o n gas they do not con ta i n  a  hydroly zables il ic o n atom.Ex amp leso f  othe r vi n yl  monomer s incl u de ,but are  n ot lim it edto,  meth y l (m eth)ac rylate,butyl (meth)acrylate ,  2-ethylhexyl (m e t h) a cryl ate , cyclopent yl ( m eth) acry l at e,c ycloh exyl(m e th ) acrylate, phenyl (m et h)acry late,  cyclohexylme thyl (meth ) a c rylate,dicy c lo p entanyl (meth) acryl ate, isobo r nyl (met h)acr ylate, s tyrene, a s well asmon ome rshav i n ga cyclic hind e r ed a mi ne stru ctu re such  as  2, 2,6 ,6- te tramethyl -4-piper id in yl  m eth acryl a te and 1 ,2 ,2, 6, 6-p entam e thyl-4 -pipe ridi ny lm eth acrylat e .U s e of  p ol yfun cti on al ac ryla t e c ompound s which c anf ormabr anchedstructure sho ul d be avoid ed  in  princ i p le altho ugh use of minute amoun t s is ac cep table .
Th e other v iny l poly mer i zablemonome r dev oi d o f Sixe2 x 8 0x 94X  g roups (c)i s  pr efera bl y us ed in a n amount of 0 to 8 5 % b y weight, mor e p refe r a bl y 0 to 50%  b y  we i g ht based on the  total wei gh t  o f the mono m ers .Polymer s of th ese v i nyl pol ymerizabl e monomer scanb e  pr epared sim ply by d issolving the v i ny l mon ome rs inan  or ganic  solve n t,addin g to t he  solut ion a  r adical p olymerization initiator  selec ted f rom  among pe rox i des  (e.g., d icum yl peroxid e a ndbenzo ylp eroxi de)a nd  az o  comp ound s  (e.g., a z ob isi s o bu tyronitrile ) , and  heat ing the so luti on for reaction t o  take place. P olym e r s m aya lsobe  prepared by a n e mu l s ion poly me rization pr ocess of  e m ulsif ying t he vin yl poly m e ri z able m onom ers , followe d b yp olymeri za ti o n. Sui tabl eradica l poly m eriz a t ion initiators u sed i n the e m uls ion p ol ymeriza t ionprocess in clude persu lfates  suc h aspotassi um  persu lfa te  and
 is_preferred to_use the monomers having_a polyethylene_glycol_chain.
The hydrophilic_group-bearing_vinyl polymerizable monomer_(b) preferably constitutes_10 to 80% by_weight, more preferably_30_to 70% by weight of the entire monomers. Less than 10% by weight of_monomer_(b) may_make_the_polymer less dispersible in a_water-containing system and fail to_provide satisfactory_flexibility. With more than 80% by weight of_monomer_(b), hydrophilic nature_may become predominant so that a coating becomes water-absorptive,_losing adhesion and weather resistance.
The other_vinyl polymerizable monomer_devoid_of_Sixe2x80x94X groups (c) may_be any of a variety of_prior art well-known vinyl monomers as_long as they do not contain a_hydrolyzable silicon atom. Examples of other_vinyl monomers include, but are_not limited_to, methyl (meth)acrylate, butyl (meth)acrylate,_2-ethylhexyl (meth)acrylate, cyclopentyl_(meth)acrylate, cyclohexyl_(meth)acrylate, phenyl (meth)acrylate,_cyclohexylmethyl (meth)acrylate, dicyclopentanyl (meth)acrylate, isobornyl (meth)acrylate,_styrene, as well_as monomers having a cyclic hindered_amine_structure such as_2,2,6,6-tetramethyl-4-piperidinyl_methacrylate_and 1,2,2,6,6-pentamethyl-4-piperidinyl_methacrylate. Use of_polyfunctional_acrylate compounds_which_can form a branched structure should_be_avoided in principle although use of minute_amounts is acceptable.
The other_vinyl_polymerizable monomer devoid of_Sixe2x80x94X groups (c) is preferably_used in an amount of 0_to 85%_by weight,_more preferably 0 to 50% by weight based on the total_weight of the monomers.
Polymers of these_vinyl polymerizable monomers can_be prepared_simply_by dissolving the_vinyl_monomers in_an organic solvent, adding to the solution_a radical_polymerization initiator selected from among peroxides_(e.g., dicumyl peroxide and_benzoyl_peroxide) and azo compounds (e.g., azobisisobutyronitrile),_and heating the solution for reaction_to take place. Polymers may_also_be_prepared by an emulsion polymerization_process of emulsifying the vinyl polymerizable_monomers, followed by_polymerization. Suitable radical polymerization initiators used in_the_emulsion polymerization process include persulfates such_as_potassium persulfate and