Technical Data Sheet – Irgafos (pdf), EN, View (47k). Material Safety Data Sheet, EN Material Safety Data Sheet, ES, CL, View (38k). Material Safety Data . Irgafos 38 | Chemwatch – global provider of online chemical management and compliance solutions. Author and manage SDSs, manage use & transport of. 11)12)((38(4,5)6)(35)41(13,14)15) (39(7,8)9)(36)42(16 Irgafos ; tris-(2,4-di-tert-butylphenyl) phosphite.

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A1 Designated state s: There was no deposit of UV-stabilizer on the mould visual inspection of the mould and FT-IR analysis and the moulded products had satisfactory impact strength and UV stability. BE Free format text: Preferably the support material, if inorganic, is subjected to a heat treatment calcination before catalyst impregnation, e. On the other hand, where the particle size is too small the powder will have poor flow characteristics and will not distribute evenly in the mould.

IE Free format text: Irganox or [Pentaerythrityl-tetrakis 3- 3′,5′-di-tert. Kind code of ref document: The stearate may be blended to the coated polymer particles as a fine powder or may be deposited onto the polymer powder as part of the additive mixture.

CY Free format text: Use of a mixture containing phenoxy resin as an additive for a thermoplastic polymer to reduce its diffusion coefficient. DC2A Ref document number: These products may be used in the food industry. It is also preferred if the UV-stabilisers are approved for use in polyolefins in contact with food. Thus besides or in addition to aluminoxanes, other cation complex forming catalyst activators may be used.

The structures of these compounds are illustrated below. MC Free format text: FR Ref legal event code: A process as claimed in claim 1 or 2 wherein said at least one organic phosphite or phosphonite antioxidant is selected from [Bis 2-methyl-4,6-bis 1,1-dimethylethyl phenyl phosphorous acid ethylester], [Tris 2,4-di- t -butylphenyl phosphite], tris-nonylphenyl phosphate, [Tetrakis- 2,4-di- t -butylphenyl -4,4′-biphenylen-di-phosphonite] or [Phosphorous acid- cyclic butylethyl propandiol, 2,4,6-tri- t -butylphenyl ester].


B1 Designated state s: A process as claimed in any one of claims 1 to 4 wherein said UV stabiliser is [1,6-Hexanediamine, N,N’-bis 2,2,6,6-tetramethylpiperidinyl – polymer with 2,4,6-trichloro-1,3,5-triazine, reaction products with, N-butylbutanamine and N-butyl-2,2,6,6-tetramethylpiperidinamine]. These are linear or cyclic oligomers having up to 40, preferably 3 to 20, -[Al R” O]- repeat units where R” is hydrogen, C alkyl preferably methyl or C aryl or mixtures thereof.

Ti, V or Cr compound and an aluminium compounda pyrazolyl catalyst e. Irgafos 38tris-nonylphenyl phosphite, [Tris 2,4-di- t -butylphenyl phosphite] e. The structures of most of these stabilisers are illustrated in the scheme below. Such polymers may be prepared by conventional olefin polymerization techniques, e. However it has been found that polyolefin polymer particles of appropriate size for preparation of the moulding powder may readily be prepared using supported catalysts, in particular catalysts comprising porous particulates loaded with the catalyst, e.

Year of fee payment: Melt flow rate of the powder did not change. Such catalyst support preparation techniques are known in the art.

Urgafos analysis showed that the hydrolytic stability was good no reaction, no hydrolysis of additives. LU Free format text: The catalyst support material used to carry an olefin polymerization catalyst is conveniently an inorganic or organic material, e.

Ref legal event code: The polymer moulding powder should preferably comprise 0. Rotomoulded items prepared as in Example 3 were compared to a conventional rotomoulding powder RM from Irgados. Suitable mixing apparatuses include Forberg, Idecon, and Lodige mixers.

Irganox and Irganox are available from Ciba Specialty Chemicals. Polymer particles of a suitable size may be obtained by methods such as grinding, extruding and pelletising iegafos simply synthesising polymer particles having a suitable particle size directly. The oven temperature and oven curing time may be selected according to the melting characteristics of the polymer and the thickness of the item being produced.

Structures of these compounds are illustrated below. A process as claimed in any one of claims 1 to 10 wherein all the components of said mixture are approved for contact with food.


Preferably the metallocene contains at least one Cp group other than unsubstituted cyclopentadienyl, i. Zinc Stearate powder was added and the mixture blended for jrgafos five minutes. Stabilisers are also vital in preventing degradation during the rotomoulding process and in the eventual rotomoulded article.

IRGAFOS 38 | Chemicals eBiochemicals

A process as claimed in any one of claims 1 to 6 wherein said at least one organic phosphite or phosphonite antioxidant is [Bis 2-methyl-4,6-bis 1,1-dimethylethyl phenyl phosphorous acid ethylester]. Polyolefinepoedersamenstellingen, in particular polyethylene 338 compositions having improved adhesion, and to manufacture thereof, and articles of manufacture.

The invention is illustrated further by the following non-limiting Examples.

Viewed from yet another aspect the invention provides a process for the preparation of a moulded polymer item, said process comprising:. These blends must be very homogeneous and without wishing to be limited by theory, it is envisaged that the blends described below have greater solubility and compatibility with polymers such as polyethylene thus surprisingly allowing direct rotomoulding 338 the polymer powder without deposit formation. A mould is charged with polymer powder, closed and placed in an oven where it is rotated so as to distribute the polymer powder over the mould surface.

EP1261660B2 – Process for addition of additives to polymer particles – Google Patents

The spraying may be direct, e. ES Ref legal event code: In this regard mention may be made of the silver and boron compounds known in the art. Metallocene-produced very low density polyethylenes or linear low density polyethylenes as impact modifiers. Rotational moulding is a polymer moulding technique which is particularly suitable for the production of large polymer products, especially containers. The rotation orgafos was 9: