Description  Claims  Drawing  Cited references 

WO2013134602A1   [0009] 
US2282057A   [0018] 
US2282026A   [0018] 
US5137954A   [0024] 
US5728472A   [0045] 
US6825255B   [0046] 

Vinyl Acetal Polymers, in Encyclopedia of Polymer Science & Technology   [0018]