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US 6,984,679 B2Granted
Plasticizer-containing polyvinylbutyrals, method for producing the same and the use thereof, especially for producing films for use in laminated safety glasses
AssigneeKurray Specialties Europe GmbH
InventorsBernd Papenfuhs, Martin Steuer
Life of this patent
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Abstract
The invention relates to plasticizer-containing polyvinylbutyrals that are characterized by containing as the plasticizer at least one dibenzoate of alkylene and polyalkylene glycols. The invention further relates to a method for producing said compounds, and to their use in molding compounds of all types, especially for producing films that can for example be used as an intermediate layer in laminated safety glasses.
Claims11
A plasticized polyvinyl butyral, which comprises,
- at least one dibenzoate of alkylene glycol, polyalkylene glycol,
- in a mixture with
- at least one additional plasticizer selected from the group consisting of
- diesters of
- aliphatic diols
- (poly)alkylene glycols or
- (poly)alkylene polyols
- with aliphatic carboxylic acids, and
- diesters of
- aliphatic or aromatic (C2–C18) dicarboxylic acids
- with aliphatic (C4–C12) alcohols.
8 more elements
Dependencies are inferred from the claim text.