ISO 1629:2013 pdf free

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 IS0 18064.[1]
2 Rubbers
Rubbers, in both dry and latex forms, are grouped and symbolized on the basis of the chemical composition of the poly mer 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 and oxygen in the polymer chain
R rubbers having an unsaturated carbon chain, e.g. natural rubber and synthetic rubbers derived at least partly from conjugated dienes
T rubbers having carbon, oxygen, and sulfur in the polymer chain
U rubbers having carbon, oxygen, and nitrogen in the polymer chain
Z rubbers having phosphorus and nitrogen in the polymer chain
The“R” group, in both dry and latex forms, is defined by inserting, before the word “rubber”, the name of the monomer or monomers from which the rubber was prepared (except for natural rubber). The letter preceding the letter “R” signifies the conjugated diene from which the rubber was prepared (except for natural rubber). Any letter or letters preceding the diene letter signifies the comonomer or comonomers, substituent groups, or chemical modifications. The designation may be prefixed by the letter “E” and a hyphen to signify an emulsion-polymerized rubber or the letter “S” and a hyphen to signify a solution-polymerized rubber.
For latices, the designated symbol is followed by the word latex, e.g.“SBR latex”.
The symbols given in 3.4.2 to 3.4.4 are used.ISO 1629 pdf download.