Interlayer film for laminated glass

Details Interlayer film for laminated glass Interlayer film for laminated glass

1993-03-18

1994-08-23

Buffalow, Edith

Coating processes

Immersion or partial immersion

Metal base

428515, 428524, 428525, B32B 1710

Patent

active

053406540

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

REFERENCES:
patent: 5190826 (1993-03-01), Asahina et al.

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