Composition and process for making precipitated nylon-cellulose biconstituent composition
AssigneeAkzona Incorporated
InventorsNeal E. Franks, Julianna K. Varga
Life of this patent
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Abstract
A composition and process are provided for making precipitated biconstituent nylon-cellulose shaped articles by dissolving a nylon having an amide group index of less than about 145, in a mixture of a tertiary amine oxide solvent and water, containing from about 0.5% to about 11% water based on the weight of the solution; separately forming a solution of cellulose in a tertiary amine oxide solvent containing from about 0.8 to about 29% water based on the weight of the solution and then interdispersing the two solutions to form a biconstituent dispersion. Shaped articles can be formed from the biconstituent dispersions of the invention.
Claims17
A biconstituent dispersion comprising:
- (A) a first distinct phase comprising a solution of
- (1) a nylon having an amide group index of less than about 145,
- (2) a tertiary amine oxide nylon solvent which has a N-methylamine oxide group endo or exo to an aromatic or a saturated or unsaturated ring and which has substantial stability at 125.degree. C., and
- (3) a nylon solubility enhancing amount of water from about 0.5% to about 11% by weight based upon the combined weight of (1), (2) and (3), and
- (B) a second distinct phase comprising a solution of
- (1) cellulose
- (2) a tertiary amine oxide cellulose solvent, and
- (3) a cellulose solubility enhancing amount of water.
A process for forming a biconstituent dispersion of a nylon and cellulose adapted for use in forming shaped biconstituent polymer articles which comprises:
- (A) separately forming a nylon solution comprising:
- (1) a nylon having an amide group index of less than about 145,
- (2) a tertiary amine oxide nylon solvent which has a N-methylamine oxide group endo or exo to an aromatic or a saturated or unsaturated ring and which has substantial stability at about 125.degree. C., and
- (3) a nylon solubility enhancing amount of water from about 0.5% to about 11% by weight based upon the combined weight of (1), (2) and (3),
- (B) separately forming a cellulose solution comprising:
- (1) cellulose
- (2) a tertiary oxide cellulose solvent,
- (3) a cellulose solubility enhancing amount of water
- (C) admixing said separately formed solutions to provide a biconstituent dispersion.
Dependencies are inferred from the claim text.