Empa Eidgenossische Materialprufungs-und Forschungsanstalt

Unico Swiss Tex Gmbh

Benno Wüst

Sabyasachi Gaan

Giuseppino Fortunato

Timea Stelzig

Lea Bommer

Aleksandra Buczko

Rudolf Hufenus

Pierluigi Barbadoro

Bärbel Selm

Markus Weder

Pierluigi Barbadora

The invention relates to novel and improved halogen-free flame retardant compounds having the structure of Formula (I): wherein: Rand Rare independently hydrogen, C-Calkyl, &#x2014;P(O)(OR), &#x2014;P(O)ORR, or &#x2014;P(O)R, wherein Rand Rare independently C-Calkyl, C-Caryl, C-Caralkyl or C-Calkaryl; or Rand Rtaken together form an unsaturated cyclic ring, which is optionally substituted by an alkyl group; each k is independently an integer from 1 to 2; each X is independently oxygen (O) or sulphur (S); v is 0 or 1; each Y is independently C-Calkylene, Carylene, C-Caralkylene, C-Calkarylene, oxygen (O), nitrogen (NR), wherein R is H or C-Calkyl; n is 0, 1 or 2 with the proviso that n is 1 when Y is oxygen (O) or nitrogen (NR); each Z is independently C-Calkylene, Carylene, C-Caralkylene or C-Cis alkarylene; m is independently 0, 1 or 2; with the proviso that when Y is oxygen (O) or nitrogen (N), m cannot be 0; each Q is independently C-Calkylene; t is an integer from 1 to 2; W is oxygen (O) or sulphur (S). The compounds are particularly suited as flame retardant additives for thermoplastic polyesters.

DOPO-based hybrid flame retardants

A personal cooling element for patients comprises at least one cooling zone () that can be pre-tensioned against the body surface () of a person wearing the personal cooling element. The cooling zone () is three-layered with an internal layer () that faces towards the body, an external layer () that faces away from the body and an evaporation zone () that is located therebetween. The internal layer () and the external layer () each are made from a material that is waterproof and permeable to water vapor. The evaporation zone () is supplied with liquid water.

Personal cooling element, in particular for patients

Growing community of inventors

Thal, Switzerland

Benno Wüst