Reducing blocking and increasing flow of plasticized polyvinyl butyral sheet
AssigneeMonsanto Company
InventorsAshok Misra, Donald J. David, Arijit M. DasGupta
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Abstract
A process for increasing both resistance to blocking and flow during laminating of plasticized polyvinyl butyral sheet which comprises incorporating into the formulation of the sheet a block-reducing and flow-promoting amount, preferably up to about 10 mole %, of ionomeric groups chemically bound to oxygen atoms of adjacent precursor vinyl alcohol groups.
Claims17
A process for increasing the resistance to blocking of plasticized polyvinyl butyral sheet containing residual hydroxyl groups which comprises incorporating into the formulation from which the sheet is made an effective block-reducing amount of ionomeric groups chemically bound to oxygen atoms of adjacent precursor vinyl alcohol groups.
A process for increasing the flow of plasticized polyvinyl butyral sheet containing residual hydroxyl groups during lamination with glass layers which comprises incorporating into the formulation from which the sheet is made an effective flow-promoting amount of ionomeric groups chemically bound to oxygen atoms of adjacent precursor vinyl alcohol groups.
A process for increasing the resistance to blocking of plasticized polyvinyl butyral sheet containing residual hydroxyl groups and for increasing the flow thereof during lamination with glass layers which comprises incorporating into the formulation from which the sheet is made an effective block-reducing and flow-promoting amount of ionomeric groups chemically bound to oxygen atoms of adjacent precursor vinyl alcohol groups.
Dependencies are inferred from the claim text.