The Shrinkproofing of Wool with the Bisulphite Adducts of Polyisocyanates

Guise, G. Bruce; Jackson, M.B.

doi:10.1080/00405007308630317

Cited by 27 publications

(9 citation statements)

References 3 publications

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“…During heat curing, the polymer causes crosslinking between polymer and reactive groups in the wool and reactive hydroxyl groups of cotton fibre. This crosslinking could be expected to reinforce the intercellular region of both fibers 23,24) . The subsequent encapsulation of surface modified wool and cotton fibers by the S-BAP combination finishing combination is the reason for the regain of tearing strength to higher value.…”

Section: Tearing Strengthmentioning

confidence: 99%

Performance Properties of Multi-Functional Finishes on the Enzyme-Pretreated Wool/Cotton Blend Fabrics

Ammayappan¹,

Moses²,

Senthil³

et al. 2011

Textile Coloration and Finishing

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Abstract-Research information related to application of enzyme as pretreatment and subsequent functional finishing on wool blended textiles for imparting multi-functional properties is still scanty. Yarn-blended wool/cotton fabric was pretreated with both a cellulase (Bactosol-CA) or a protease (Savinase-16.0LEx) in individual, subsequently finished with Synthappret-BAP and β-cyclodextrin based combination to impart anti-shrink, anti-microbial, softening and anti-crease properties. The performance of the finished fabrics depended on type of finishing combinations applied rather than enzyme pretreatment. Savinase pretreatment followed by Synthappret+Ceraperm-MW combination finishing impart both anti-shrink property as well as softening, while Bactosol pretreatment followed by β-cyclodextrin and sanitize combination finishing impart antimicrobial activity as well as anti-shrink finish to the wool/cotton blend fabric.

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Section: Tearing Strengthmentioning

confidence: 99%

Performance Properties of Multi-Functional Finishes on the Enzyme-Pretreated Wool/Cotton Blend Fabrics

Ammayappan¹,

Moses²,

Senthil³

et al. 2011

Textile Coloration and Finishing

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show abstract

“…Since the polymer in its original form is insoluble in water and also its emulsions in water have too low a stability,due to the ready reaction of the isocyanate groups with this medium, then in its present form it can be regarded as useless for incorporation in aqueous-based pad dyeing liquors. However, Guise and Jackson [15] have recently demonstrated that Synthappret LKF can be reacted with sodium bisulphite in alcohol/water solution to give an anionic, water-soluble derivative which shrink proofs untreated wool. This reaction can be shown schematically as: isocyanate prepolymer carbamoyl sulphonate prepolymer (where represents the polyether ,backbone)…”

Section: Isocyanate Terminated Polymersmentioning

confidence: 99%

Continuous Dyeing and Polymer Shrink‐resist Processes for Wool

Lewis¹

1977

Journal of the Society of Dyers and Colourists

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A number of polymer shrink‐resist treatments for wool in various forms have been proposed; one of the most popular of these being the chlorine‐Hercosett 57 process, applicable to both wool tops and garments. In order to increase the versatility of such processes, polymers have been developed which can be applied together with dyes at the dyeing stage. This paper describes the application of several different water‐soluble polymers to wool piece goods and tops, using pad‐batch methods of application. Fabrics produced by the combined dyeing and finishing techniques are capable of meeting both machine washability and colour fastness criteria required in the Superwash specification. Problems in developing the method for wool tops are discussed, together with indications as to their solution.

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“…The prepolymers were applied from dilute solution in an inert organic solvent to prevent premature reaction with moisture. Alternatively, reaction with bisulphite [2,4] converts the water-insoluble prepolymers into stable, water-soluble, anionic poly (carbamoyl sulphonates) that can be applied to wool from aqueous solution.…”

Section: Introductionmentioning

confidence: 99%

Multifunctional Amino-Terminated Polyurethanes : Their Preparation and Use as Crosslinkers in Shrink-Resist Polymers for Wool

Bateup

Fleischfresser

1978

Textile Research Journal

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A simple, rapid method for converting water-insoluble polyisocyanates into either water soluble (or water-dispersible multifunctional amino-terminated polyurethanes or self-crosslinkable polymers containing protonated an ino groups and blocked isocyanate groups is descried. Both types of product are suitable for shrink resisting wool, the self-crosslinkable polymers can be used alone, whereas the polyamines need to be combined with poly mers containing groups capable of reaction with amino groups.The effective functionalites of the amino-terminated polyurethanes correlated well with the values calculated from the known functionality of the reactants, which suggests that chain extension via urea formation was suppressed by this preparative procedure.

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The Shrinkproofing of Wool with the Bisulphite Adducts of Polyisocyanates

Cited by 27 publications

References 3 publications

Performance Properties of Multi-Functional Finishes on the Enzyme-Pretreated Wool/Cotton Blend Fabrics

Performance Properties of Multi-Functional Finishes on the Enzyme-Pretreated Wool/Cotton Blend Fabrics

Continuous Dyeing and Polymer Shrink‐resist Processes for Wool

Multifunctional Amino-Terminated Polyurethanes : Their Preparation and Use as Crosslinkers in Shrink-Resist Polymers for Wool

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