Use of sodium bisulfite in an improved process for the treatment of cellulose textile materials with carbamate finishing agents and sulfurous acid

Claim 2

AN IMPROVED PROCESS IN THE TREATMENT OF CELLULOSECONTAINING FABRICS WITH A METHYLOLATED CARBAMATE-SULFUROUS ACID FORMULATION WHICH PROCESS COMPRISES ADDING A MINOR AMOUNT OF SODIUM BISULFITE TO SAID FORMULATION, IMPREGNATING THE CELLULOSE-CONTAINING TEXTILE WITH SAID FORMULATION AND CURING THE IMPREGNATED FABRIC TO IMPART DURABLE PRESS PROPERTIES WITH IMPROVED STRENGTH-TO-WRINKLE RECOVERY RELATIONSHIP TO THE TREATED FABRIC.

Claim 3

The process of claim 1 wherein every 100 parts by weight of the methylolated carbamate-sulfurous acid formulation contains about from 0.3 to 1.0 part by weight of sodium bisulfite.

Claim 4

The process of claim 1 wherein the methylolated carbamate of the methylolated carbamate-sulfurous acid formulation is dimethylol methyl carbamate.

Claim 5

A process for treating cellulose-containing textiles to impart durable press properties with an improved strength-to-wrinkle recovery relationship, the process comprising: a. adding a sufficient quantity of sodium bisulfite to a methylolated carbamate-sulfurous acid formulation so that in every 100 parts by weight of the formulation there is about from 10 to 15 parts by weight of a methylolated carbamate, about from 0.1 to 0.2 part by weight of sulfurous acid, and about from 0.3 to 1 part by weight of sodium bisulfite; b. impregnating a cellulose-containing textile with a formulation from (a); and c. curing the wet impregnated textile for about from 2 to 4 minutes at about 100* C. and washing and drying the cured textile.

Claim 6

A process for treating cellulose-containing textiles to impart durable press properties with an improved strength-to-wrinkle recovery relationship, the process comprising: a. adding a sufficient quantity of sodium bisulfite to a methylolated carbamate-sulfurous acid formulation so that in every 100 parts by weight of the formulation there is about from 10 to 15 parts by weight of a methylolated carbamate, about from 0.1 to 0.2 part by weight of sulfurous acid, and about from 0.3 to 1 part by weight of sodium bisulfite; b. impregnating a cellulose-containing textile with a formulation from (a); and c. curing the wet impregnated textile for about from 2 to 4 minutes at about 100* C. and washing and drying the cured textile.

Claim 7

A process for treating cellulose-containing textiles to impart durable press properties with an improved strength-to-wrinkle recovery relationship, the process comprising: a. adding a sufficient quantity of sodium bisulfite to a methylolated carbamate-sulfurous acid formulation so that in every 100 parts by weight of the formulation there is about from 10 to 15 parts by weight of a methylolated carbamate, about from 0.1 to 0.2 parts by weight of sulfurous acid, and about from 0.3 to 1 part by weight of sodium bisulfite; b. impregnating a cellulose-containing textile with a formulation from step (a); c. drying the wet impregnated textile for about seven minutes at about from 60* C. and d. curing the dry impregnated textile for about 3 minutes at about from 80* to 160* C. and washing and drying the cured textile.

Claim 8

A process for treating cellulose-containing textiles to impart durable press properties with an improved strength-to-wrinkle recovery relationship, the process comprising: a. adding a sufficient quantity of sodium bisulfite to a methylolated carbamate-sulfurous acid formulation so that in every 100 parts by weight of the formulation there is about from 10 to 15 parts by weight of a methylolated carbamate, about from 0.1 to 0.2 parts by weight of sulfurous acid, and about from 0.3 to 1 part by weight of sodium bisulfite; b. impregnating a cellulose-containing textile with a formulation from step (a); c. drying the wet impregnated textile for about seven minutes at about from 60* C. and d. curing the dry impregnated textile for about 3 minutes at about from 80* to 160* C. and washing and drying the cured textile.

Claim 9

A cellulosic fabric prepared by the process of claim 5, characterized by an improved strength-to-wrinkle recovery relationship with respect tO a control fabric treated with an identical formulation to that used in claim 5 except for the omission of sodium bisulfite.