Stock material or miscellaneous articles – Structurally defined web or sheet – Discontinuous or differential coating – impregnation or bond
Patent
1983-08-29
1984-12-11
Page, Thurman K.
Stock material or miscellaneous articles
Structurally defined web or sheet
Discontinuous or differential coating, impregnation or bond
252 88, 26050114, 4273899, 427392, 4273933, 428260, 428264, 428272, 428276, B32B 700, B05D 302
Patent
active
044878001
ABSTRACT:
Novel phosphonic acid salts produced from ethane- or methanephosphonic acid, dicyandiamide and/or guanidine and optionally ammonia and corresponding to the formula ##STR1## wherein n, p, q, t and y are each 1 or 2, are particularly suitable for fireproofing organic fibre materials. Synthetic and/or cellulose-containing fibre materials are treated with an aqueous solution of the phosphonic acid salts and are then dried preferably at 60.degree. to 200.degree. C. The applied phosphonic acid salts impair only negligibly the textile-mechanical properties of the treated fibre materials, especially of the cellulose-containing fibre materials dried at 120.degree. to 150.degree. C.
REFERENCES:
patent: 4097560 (1978-06-01), Littman et al.
patent: 4104172 (1978-08-01), Smith et al.
patent: 4151322 (1979-04-01), Rosenthal et al.
Guth Christian
Nachbur Hermann
Ciba-Geigy Corporation
McC. Roberts Edward
Page Thurman K.
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