Abstract: A thermal transfer printing sheet comprising a substrate having a coating comprising a dye of the formula:A--N.dbd.N--EwhereinA is a phenyl group substituted by at least one electron-withdrawing group selected from NO.sub.2, CN, CF.sub.3, halogen, --SO.sub.2 --C.sub.1-4 -alkyl, --SO.sub.2 F, --SO.sub.2 CF.sub.3, --SO.sub.2 NRR.sup.1, --CONRR.sup.1, --COOR, --CO--CO--R, wherein R and R.sup.1 are independently selected from H and C.sub.1-4 alkyl, provided that where A carries only two halogen atoms these are not in the 2- and 6- positions in relation to the azo link;and E is the radical of an aniline, a tetrahydroquinoline, a lilolidine or a julolidine coupling component, and a thermal transfer printing process for the coloration of a polymeric substrate using the thermal transfer printing sheet.

Abstract: A rubbish segregating and collection system makes use of a transporter that is placed at a town dump. The transporter has several containers to receive different classes of rubbish, each of which containers is removable from the transporter. When filled, the transporter is placed on a carrier and replaced with another transporter. The filled transporter is carried to a central collection and segregation facility where the individual containers tare weights may be determined following which their contents are dumped and inspected as necessary. The segregated rubbish is then transported to the appropriate reclamation centers for each class of rubbish. The preferred type of bottom jaw-like opening individual container is also claimed.

Abstract: The invention relates to:(A) A thermal transfer printing sheet comprising a substrate having a coating comprising either,(i) a dye of the formula: ##STR1## wherein R.sup.1 is C.sub.5-12 -alkyl;R.sup.2 is H or C.sub.1-12 -alkyl; and Rings A & B are optionally substituted in the free positions by non-ionic groups; or(ii) a mixture of at least two dyes of the formula: ##STR2## wherein R.sup.3 is H or C.sub.1-12 -alkyl;R.sup.4 is H or C.sub.1-4 -alkyl; and Rings A & B are optionally substituted in the free positions by non-ionic groups;provided that in at least one component R.sup.3 is C.sub.5-12 -alkyl and in at least one other component R.sup.3 is H or C.sub.1-4 -alkyl;(B) A thermal transfer printing process using the transfer sheets; and(C) The mixture of dyes defined in (A)(ii).

Abstract: Aqueous dispersions of dyestuffs which are susceptible to crystal growth of the dyestuff particles in the dispersion, stabilized against such crystal growth by addition to the dispersion of a phosphated alkylphenol ethoxylate.