PVB
PolyVinyl Butyral (Replacement for Eastman)
There is no longer a USA manufacturer of solvent based PVB powder. This replacement material is stocked in the USA at multiple sites, but is manufactured by CCP in Taiwan.
PVB Comparison:
Eastman B-79 CCP B-08SY
MW 50 - 80 55 - 65
-OH % 11 - 13.5 11 - 14
Tg 62 - 72 64
Butyral % 88 82-88
Acetate % < 2.5 < 3
Eastman B-98 CCP B-08HX
MW 40 - 70 52 - 62
-OH % 18 - 20 18 - 21
Tg 72 - 82 71
Butyral % 80 76 - 82
Acetate % < 2.5 < 2
Eastman B-76 CCP B-14HX
MW 90 - 120 93.5 - 100.5
-OH % 11.5 - 13.5 18 - 21
Tg 62 - 72 71
Butyral % 88 76 - 82
Acetate % < 2.5 < 2
There are other grades of this PVB, but these are the three we plan to stock. B-08SY and B-08HX are already in stock, and we plan to stock B-14HX as well but it is not in house yet...soon...
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