Method of providing oil and/or grease resistant textile materials
Disclosed is a method for providing a textile material(s) resistant to the deposition of oil- and grease-based air pollutants by treating the textile material(s) with an oil/grease resistant composition. The oil/grease resistant composition comprises a modified polysaccharide(s), particularly, polysaccharides modified with anionic groups, and one or more adjuvant materials.
1. A method for providing a textile material which is resistant to the deposition of oil-and grease-based air pollutants, the method comprising the steps of:
i. treating the textile material with an oil and grease resistant composition comprising blocky carboxymethyl cellulose (CMC) and optionally at least one adjunct material; and
ii. drying the resultant textile material of step (i) wherein the blocky carboxymethyl cellulose has a degree of substitution (DS) of at least 0.4, and a degree of blockiness (DB) of at least 0.5,
wherein the blocky carboxymethyl cellulose has a molecular weight in the range of from 100,000 Daltons to 1.5 million Daltons.
2. The method according to claim 1 , wherein the blocky carboxymethyl cellulose has a degree of substitution (DS) in the range of from 0.4 to 1.2, and a degree of blockiness (DB) in the range of from 0.5 to 0.8.
3. The method according to claim 1 , wherein the textile material is treated with the oil and grease resistant composition during laundry operations.
4. The method according to claim 3 , wherein the laundry operations include pre-treating or soaking the textile materials, washing the textile materials with detergents or soaps (main wash), rinsing the textile materials with water, post-wash treating the textile materials after the final rinse, or drying the textile materials after the pre-treating or soaking or after the main wash or after the final rinse with water or after the post-wash treating, or any combinations thereof.
5. The method according to claim 1 , wherein the oil and grease resistant composition is uniformly deposited on the surface of the textile material in an amount of about 0.001 gm to about 10.0 gm per gm of the textile material.
6. A method for providing a textile material which is resistant to the deposition of oil-and grease-based air pollutants, the method comprising the steps of:
i. treating the textile material with an oil and grease resistant composition comprising blocky carboxymethyl cellulose (CMC); and
ii. drying the resultant textile material of step (i) wherein the blocky carboxymethyl cellulose has a degree of substitution (DS) of at least 0.4, and a degree of blockiness (DB) of at least 0.5,
wherein the blocky carboxymethyl cellulose has a molecular weight in the range of from 100,000 Daltons to 1.5 million Daltons.
7. The method according to claim 6 , wherein the blocky carboxymethyl cellulose has a degree of substitution (DS) in the range of from 0.4 to 1.2, and a degree of blockiness (DB) in the range of from 0.5 to 0.8.