Jun.  16,2016  3  US 2016/0168306 Al  to give a transparent solution (no turbidity) for 120 hours or  greater. Other condensates formed by the processes described  herein were observed to have a solubility up to 80 wt.% solids  (and sometimes greater) for at least 500 hours.  [0027]  In comparison, most of the condensates from prior  art processes typically dissolve only up to 40 wt.% (solids)  and in selected cases roughly about 60 wt. % in common  solvents such as MEK.  [0028]  The processes for forming the condensates as  described herein also allow for the production of the conden› sates in large reaction vessels with improved control over  melt viscosity than the prior methods to produce similar con› densates.  [0029]  In one aspect, the triazine-arylhydroxy-aldehyde  condensate is formed from a reaction mixture of a triazine  monomer, an arylhydroxy monomer, and an aldehyde mono› mer, and an acid catalyst having a pKa of greater than 3.8,  which are described as follows. In one embodiment, the tri› azine monomer may include an aldehyde functional group,  such as an aldehyde modified triazine monomer. The alde› hyde modified triazine monomer may be used in place of a  separate triazine monomer and a separate aldehyde monomer  to form the condensate.  [0030]  The triazine monomer may be a triazine compound  or a triazine derivative. An example of a triazine compound is  melamine and an example of a triazine derivative is a  melamine derivative. The triazine derivative may also be an  aldehyde modified triazine monomer, such as hexam› ethoxymethylmelamine  (HMMM)  or  hexamethy› lolmelamine. The aldehyde modified triazine monomer may  provide for the aldehyde presence in the triazine-arylhy› droxy-aldehyde condensate and remove the need for a sepa› rate aldehyde monomer.  [0031]  One embodiment of the triazine monomer may be  represented by the following formula:  (I)  wherein R$_{1 }$ and R$_{2 }$ may each be independently a hydrogen  atom or a functional group selected from the group of an  amino group (-NH$_{2}$ ),  an alkyl group having 1 to 4 carbon  atoms, a phenyl group, a vinyl group (----CH=CH$_{2}$ ),  or a  group containing a combination of the functional groups.  [0032]  Suitable compounds that may be used as the triazine  monomer include compounds selected from the group of  aminotriazine, 4-methyl-1,3,5-triazine-2-amine, 2-amino-4,  6-dimethy 1-1,3, 5-triazine,  melamine,  hexamethoxymeth› y lmelamine, hexamethylolmelamine, guanamine, acetogua› namine,  propioguanamine,  butyroguanamine,  benzoguanamine, vinylguanamine, 6-(hydroxyphenyl)-2,4- diamino-1,3,5-triazine, and combinations thereof.  [0033]  The triazine monomer may also be a mixture of one  or more triazine compounds, such as melamine, and a second  amine compound, such as benzoguanamine or acetoguan› amine. The quantity of melamine is at least 50% by weight of  the mixture and the second amine compound may be from  about 0.5% to not more than about 50% by weight of the  mixture. In one embodiment, the amount of the second amine  compound may be from about 1 % to not more than about 25%  by weight of the mixture.  [0034]  The triazine monomer may also be a mixture of  melamine and two or more amines, such as benzoguanamine  and acetoguanamine, wherein the first of one or more amines  is not more than about 35% by weight of the mixture, the  second of the one or more amines is not more than 35% by  weight of the mixture, and the quantity of melamine is at least  50% by weight of the mixture. In one embodiment, the ben› zoguanamine and acetoguanamine combined are not more  than 25% by weight of the mixture and the melamine is at  least 75% by weight of the mixture.  [0035]  The arylhydroxy monomer may be any suitable aro› matic monomer, such as a phenol monomer. The quantity of  an ary !hydroxy monomer in the reaction mixture for forming  the condensates as described herein may be from about 3 to  about30 moles, such as from about 9to about 14 moles, of the  arylhydroxy monomer for each mole of triazine monomer.  Thus, the molar ratio of arylhydroxy monomer to triazine  monomer may be from about 3: 1 to about 30: 1, such as from  about 9:1 to about 14:1. This quantity of arylhydroxy mono› mer in the reaction mixture, i.e., charged to the reaction  vessel, may be greater than the amount which reacts in the  formation of the condensate. Free, non-reacted, arylhydroxy  monomer, such as phenol, may be distilled out of the reaction  mixture after completion of the condensate reaction.  [0036]  Non-limiting examples of arylhydroxy monomers  include phenol (phenolic) monomer type compounds. A phe› nol monomer type compound includes compounds having  one or more aromatic hydroxyl groups per molecule, includ› ing, for example, mononuclear or binuclear, monohydrox› yphenols or dihydroxyphenols (diphenolics, benzene dials).  Phenol monomer type compounds having at least one ortho or  para position available for bonding are preferred compounds.  The phenol monomer type compounds may be an unsubsti› tuted or substituted compound, for example, with an alkyl  group, a phenyl group, a hydroxybenzene group, an alkoxy  group, and combinations and subsets thereof. The phenol  monomer type compound may also include compounds hav› ing up to about 15 carbon atoms such as up to about 8 carbon  atoms.  [0037]  Suitable phenol monomers include compounds  selected from the groups of cresols, xylenols, bis-phenols,  alkylated bisphenols, alkoxyphenols, dihydroxy benzene  ( diphenolics, benzene dials), naphthols, bi phenols, alkylated  biphenols, trisphenols, and combinations thereof.  [0038]  Examples of suitable phenol monomers may  include compounds represented by the following formula:  (II)  The Arylhydroxy Monomer  The Triazine Monomer 