Easy-care and durable press finishes of cellulosics

An unavoidable side effect of the cellulosic crosslinking finishes is a reduction in the elasticity and flexibility of the cellulose fibres. This produces a considerable decrease in abrasion resistance and tear and tensile strengths on natural cellulose [Pg.51]

Easy-care and wrinkle resistance, a smooth wrinkle-free appearance after washing without ironing Mainly for woven fabrics [Pg.52]

Dimension stability, shrink resistance after washing Mainly for knitwear [Pg.52]

Durable press, retention of intentional creases Formal and leisure wear with some demands, plisee/pleated goods [Pg.52]

Pile resilience, improved stand of pile by better elastic resilience Pile fabrics [Pg.52]

Another category of durable hand builders are formaldehyde-containing thermosetting polymers. These products are usually supplied as dispersions or aqueous solutions of precondensates of urea or melamine with formaldehyde, for example di-methylol urea or di- to hexa-methylol melamine and their methyl ethers. The thermosetting polymers are comparatively inexpensive and provide fabrics with stiffness and resilience. However, they have a tendency to reduce abrasion resistance, yellow after exposure to heat, and release formaldehyde. Melamine-based hand builders are more highly crosslinked than urea-based products and are accordingly more durable. Butylated urea condensates are especially useful for rayon fabrics (see also Chapter 5 Easy-care and durable press finishes of cellulosics). [Pg.47]

Easy-care and durable press finishes of cellulosics... [Pg.51]

Easy-care and durable press finishes of cellulosics 59 Table 5.4 Effects of the ether modification of DMDHEU °... [Pg.59]

In commercial use, easy-care and durable press finishes are frequently combined with other finishes to provide additional properties such as water and oil repellency, flame retardancy, soil release and the like. Often the combination of another finish with the cellulose crosslinking finish will result in a more durable effect from the first finish. Combination with pigment printing is very common because of similar chemistry to cellulose crosslinking agents and binders and the similar application conditions. [Pg.67]

Elastomeric finishes are often combined with easy-care and durable press finishes. The silicones reduce abrasion, increase tearing strength (Ehnendorf testing apparatus - ASTM D1424), and crease recovery. For equal crease resistance and durable press performance the amount of cellulose crosslinking agents can be markedly reduced in these combinations. ... [Pg.142]

Substituted triazinyl derivatives of DAS are usually chosen for pad-dry-bake application to cotton in conjunction with an easy-care or durable-press finish. In these mildly acidic conditions (pH about 4) the FBA must show appreciable resistance towards the catalyst (usually magnesium chloride) necessary to cure the resin. The less substantive products in the upper half of Table 11.1 are important in this respect, as are compounds of type 11.9 where R = OCH3 or CH3NCH2CH2OH. It is likely that the hydroxyethylamino groups present in many of these compounds participate in condensation reactions with N-methylol groups in the cellulose-reactant resin. The performance of an FBA applied in conjunction with a resin finish can be modified and improved by careful formulation of the pad liquor but this lies beyond the scope of the present chapter. Alternatively, FBA and resin can be applied in two separate steps most DAST-type brighteners would be suitable if applied in this way. [Pg.310]

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