AN INTERLAYER FILM FOR LAMINATED GLASS

摘要

An interlayer film for laminated glass comprising laminated layers of at least once layer (A) which comprises a plasticizes and polyvinyl acetal resin for which the number of carbon atoms in the acetal group is 4,5 or 6 and the pole ratio of the average amount of the ethylene groups bonded to acetyl groups is 8-30 moles% of the total amount of the main chain ethylene groups, and at least one layer (B) which comprises a plasticizes and polyvinyl acetal resin for which the number of carbon atoms in the acetal group is 3 or 4 and the mole ratio of the amount of the average ethylene groups bonded to acetyl groups is 4 moles% or less of the total amount of the main chain ethylene groups.