Title:
Preparing aqueous solutions of polypyrrolidone
United States Patent 3324061
US Patent References:
Process for producing chlorotrifluoroethylene fibers
- - 2867495
Process of manufacturing fibers of polyethylene terephthalate
- - 2934400
Solutions of polypyrrolidone in aqueous phytic acid and process for making same
- - 2980641
Process for manufacturing polyalkylene terephthalate threads
- - 2987373
Solution of polypyrrolidone in a mixture of 1,1,1-trichloro-3-nitro-2-propanol and water and process of making same
- - 3003984
Process for producing chlorotrifluoroethylene fibers
- - 2867495
Process of manufacturing fibers of polyethylene terephthalate
- - 2934400
Solutions of polypyrrolidone in aqueous phytic acid and process for making same
- - 2980641
Process for manufacturing polyalkylene terephthalate threads
- - 2987373
Solution of polypyrrolidone in a mixture of 1,1,1-trichloro-3-nitro-2-propanol and water and process of making same
- - 3003984
Inventors:
Tanquary, Albert C.
Riedesel, Richard G.
Riedesel, Richard G.
Publication Date:
06/06/1967
View Patent Images:
Export Citation:
Assignee:
MINNESOTA MINING & MFG
Primary Class:
Other Classes:
524/548, 264/177.130, 521/189, 264/205
International Classes:
A23G3/10; C08J3/03; D01F6/02; D01F6/60; A23G3/02; C08J3/02
US Patent References:
| 3003985 | Solution of polypyrrolidone in a mixture of chloral hydrate and water, and process of making same | |||
| 3033810 | Composition comprising polypyrrolidone polymer dissolved in ferric chloride solution and process for preparing same | |||
| 3076774 | Solution of polypyrrolidone in superheated water | |||
| 3084992 | Process for the manufacture of shaped structures from acrolein polymers | |||
| 3093445 | Manufacture of polyamide filaments |
Foreign References:
| GB653757A |