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US 4,383,063 AGranted
Polyvinyl alcohol based size composition
AssigneeE. I. Du Pont de Nemours and Company
InventorRichard W. Rees
Life of this patent
Estimating the term…
Abstract
Polyvinyl alcohol based sizing solution containing a small amount of quaternary (e.g., dialkyldimethyl) ammonium salt or quaternary imidazolinium salt additives provide good operability during application and weaving and results in fabric having improved finishing performance.
Claims9
A composition consisting essentially of
- (a) vinyl alcohol polymer selected from the group consisting of polyvinyl alcohol and vinyl alcohol/methylmethacrylate copolymer, and
- (salt additive selected from the group consisting of
- (.alpha.) quaternary imidazolinium salt having the formula ##STR5## where X is anion and R is an alkyl group containing 12 to 18 carbon atoms, and
- (.beta.) quaternary ammonium salt having the formula ##STR6## where R.sub.1 is an alkyl group containing 1 to 3 carbon atoms
- R.sub.2 is an alkyl group containing 1 to 3 or 12 to 22 carbon atoms
- R.sub.3 and R.sub.4 are alkyl groups containing 12 to 22 carbon atoms, and
- X is an anion
- wherein the weight ratio of salt additive to vinyl alcohol polymer is from about 0.001 to about 0.02.
5 more elements
Dependencies are inferred from the claim text.