Durable press cellulosic fibrous substrates with improved physical properties
This invention is directed to a finishing method and composition for greatly increasing the tear strength and flex abrasion resistance of durable press cellulosic (including cotton) fabric, without sacrificing its durable press properties.
1. A durable press finish composition for a cellulosic fibrous substrate, which finish composition comprises formamidine sulfinic acid; a durable press agent; a catalyst; and at least one water- and oil-repellent agent.
2. A durable press finish composition for a cellulosic fibrous substrate which finish composition comprises formamidine sulfinic acid; a durable press agent; a catalyst; and a mixture of a polyethylene softener and at least one water- and oil-repellent agent.
3. An improved durable press finish composition comprising a durable press agent and a catalyst, the improvement comprising adding to the durable press formulation formamidine sulfinic acid and at least one water- and oil-repellent agent.
4. An improved durable press finish composition comprising a durable press agent and a catalyst, the improvement comprising adding to the durable press formulation formamidine sulfinic acid and a mixture of a polyethylene softener and at least one water- and oil-repellent agent.