ISO 1629-2013 pdf free.Rubber and latices – Nomenclature. ISO 1629 establishes a system of symbols for the basic rubbers in both dry and latex forms, based on the chemical composition of the polymer chain. The purpose of this International Standard is to standardize the abbreviated terms used in industry, commerce, and government, and it is not intended to conflict with, but rather to act as a supplement to, existing trade names and trademarks. NOTE 1 It is intended that in technical papers or presentations, the name of the rubber be used, if possible. It is intended that the symbols follow the chemical name for use in later references. NOTE 2 The nomenclature of thermoplastic elastomers Is described In ISO 18064.111 2 Rubbers Rubbers, in both dry and latex forms, are grouped and symbolized on the basis of the chemical composition of the polymer chain in the following manner: M rubbers having a saturated carbon chain of the polymethylene type N rubbers having carbon and nitrogen in the polymer chain NOTE At the time of publication, no rubber has so far been symbolized in the “N group. o rubbers having carbon and oxygen in the polymer chain Q rubbers having silicon…