this invention relates to the synthesis from pet of novel water dispersible or water emulsifiable polyester resins having improved hydrophobicity or non - polar characteristics . these characteristics give the applied film of these dispersions or emulsions much improved water repellency while at the same time retaining their redispersible or reemulsifiable properties . such resins can be used for many applications in the paper , textile , coatings , paint , construction , and other industries .