Use Of Liquid Colorant Preparations For Dyeing Composite Cellulose/Polymer Materials

Abstract

Liquid colorant preparations comprising at least one pigment and at least one dye are useful for coloring cellulose polymer compounds or composites.

1 - 12 . (canceled) 
     
     
         13 . A method of coloring cellulose polymer compounds or composites comprising applying liquid colorant preparations comprising at least one pigment and at least one dye. 
     
     
         14 . The method of coloring cellulose polymer compounds or composites according to  claim 13  wherein the colorant preparations comprise 0.5% to 10% by weight of dye, based on the pigment. 
     
     
         15 . The method of coloring cellulose polymer compounds or composites according to  claim 13  wherein the colorant preparations comprise
 (A) 10% to 70% by weight of at least one pigment,   (B) 0.05% to 7% by weight of at least one dye,   (C) 1% to 50% by weight of at least one dispersant,   (D) 10% to 88.95% by weight of water or of a mixture of water and at least one water-retaining agent, and   (E) 0% to 5% by weight of further constituents customary for colorant preparations.   
     
     
         16 . The method of coloring cellulose polymer compounds or composites according to  claim 15  wherein component (B) comprises at least one dye selected from the group consisting of anionic dyes, cationic dyes and disperse dyes. 
     
     
         17 . The method of coloring cellulose polymer compounds or composites according to  claim 15  wherein component (C) comprises at least one water-soluble surface-active additive selected from the group consisting of nonionic additives based on polyethers (C1), anionic additives based on polymers of ethylenically unsaturated carboxylic acids (C2), anionic additives based on polyurethanes (C3) and anionic additives based on acidic phosphoric, phosphonic, sulfuric and/or sulfonic esters of polyethers (C4). 
     
     
         18 . A process for producing colored cellulose polymer compounds or composites, which comprises utilizing cellulose particles colored with liquid colorant preparations according to  claim 17 . 
     
     
         19 . The process according to  claim 18  wherein the cellulose particles utilized are at least one selected from the group consisting of colored wood shavings, moist wood fibers, dry wood fibers, wood dusts, and mixtures thereof. 
     
     
         20 . The process according to  claim 19  wherein wood-chopping chips serving as starting material to produce the wood shavings, wood fibers and wood dusts are contacted with the colorant preparations. 
     
     
         21 . The process according to  claim 19  wherein the moist wood fibers obtained by cooking and grinding, are contacted with the liquid colorant preparations. 
     
     
         22 . The process according to  claim 19  wherein the moist wood fibers obtained by cooking and grinding, together with further auxiliaries for composite or compound production are contacted with the liquid colorant preparations 
     
     
         23 . The process according to  claim 19  wherein the dry wood fibers are sprayed with the liquid colorant preparations. 
     
     
         24 . The process according to  claim 18  wherein a polymer matrix is additionally colored. 
     
     
         25 . Cellulose polymer composites or compounds colored with liquid colorant preparations according to  claim 13 . 
     
     
         26 . Cellulose polymer composites or compounds colored with liquid colorant preparations according to  claim 14 . 
     
     
         27 . Cellulose polymer composites or compounds colored with liquid colorant preparations according to  claim 15 .