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US 5,332,774 AGranted
Polyvinyl acetal resins based on hydroxyaldehydes and use of the resins in laminar structures
AssigneeArco Chemical Technology, L.P.
InventorsJeffrey A. Klang, Michael J. Cannarsa, Frank J. Liotta, Jr., Scott E. Smyth
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Abstract
Plasticized polyvinyl acetal resins based on 4-hydroxybutanal are disclosed. Laminar structures that include the resins, a process for making the resins, and a process for making an internally plasticized polyvinyl acetal resin by esterification, are also revealed.
Claims6
A plasticized polyvinyl acetal composition comprising:
- (a) a polyvinyl acetal resin derived from polyvinyl alcohol and 4-hydroxybutanal;
- and
- (b) a plasticizer selected from the group consisting of C.sub.2 -C.sub.30 aliphatic mono-, di-, and polyfunctional alcohols, ethers, and glycol ethers;
- polyoxyalkylene polyols;
- and ethers derived from polyoxyalkylene polyols.
2 more elements
Dependencies are inferred from the claim text.