Abstract:
La présente invention concerne une bande de roulement de pneumatique qui comprend une composition de caoutchouc à base d'une matrice élastomère qui comprend plus de 50% en poids d'au moins un caoutchouc butyl, d'une charge renforçante et d'un système plastifiant qui comprend au moins une huile polybutène de température de transition vitreuse inférieure à -75°C Un pneumatique comportant une telle bande de roulement présente un bon compromis entre les performances d'adhérence sur sol mouillé et de résistance au roulement.
Abstract:
The present disclosure relates to the development of antibacterial compounds and their nanoparticle compositions. Methods of making the compounds and their nanoparticle compositions, their use as medicament for the treatment of bacterial infection and also for suppressing potentially harmful inflammation are disclosed.
Abstract:
The present specification discloses porous materials, methods of forming such porous material, biocompatible implantable devices comprising such porous materials, and methods of making such biocompatible implantable devices. The porous material may be used to fix to the interior mucosal lining of a patient's gastrointestinal tract.
Abstract:
Extruded or molded profiles comprising a polyolefin composition consisting of 85% by weight or more of a copolymer of 1-butene with ethylene (A) having an ethylene copolymerized content up to 18 % bymol, and having Mw/Mn lower than 3, hardness shore A (measured according to ISO 868) lower than 90, no melting point (TmII) detectable at the DSC after cancelling the thermal history, melting enthalpy (ΔHf), measured by DSC after 10 days of aging at room temperature,comprised between 4 and 15 J/g; and up to 15% by weight of a propylene copolymer or a composition of copolymers of propylene (B) having a melting point from about 26°C to 200°C, isotactic index greater than 90%.
Abstract:
The instant invention relates to a rosin mixture comprising at least one modified rosin compound having a UV-absorbing moiety, which UV-absorbing moiety is derived from a compound selected from a hydroxybenzophenone, an oxybenzone, a dioxybenzone, an oxanilide, a benzotriazole and a hydroxyphenyltriazine. It also relates to a method of preparing said rosin mixture, to a composition comprising said rosin mixture and to the use of a composition comprising said rosin mixture as an adhesive formulation or as thermoplastic road marking formulation. In particular, the composition comprises at least 0.01 wt. % of the rosin mixture; and the method comprises reacting under mixing at a temperature of at most 400°C, for a period of 1 minute to 24 h a mixture of rosin compounds with a UV-absorbing compound selected from a hydroxybenzophenone, an oxybenzone, a dioxybenzone, an oxanilide, a benzotriazole and a hydroxyphenyltriazine.
Abstract:
A mid-range vinylidene content, high viscosity PIB polymer composition including PIB molecules, wherein a first portion of the PIB molecules have alpha position double bonds and a second portion of the PIB molecules have beta position double bonds, and the first and second portions together include at least 80 mole % of the PIB molecules of the composition. The first portion includes less than 75 mole % of the PIB molecules of the composition. Additionally, no more than 10 mole % of the PIB molecules of the composition have tetra- substituted double bonds, while the composition is further characterized by having a polydispersity of no more than 2.7 and in that the composition has a kinematic viscosity in the range of 3000 cSt to 5000 cSt, a number average molecular weight, Mn, in the range of 2800 Daltons to 4000 Daltons and a ratio of Mn: PDI of greater than 1100.