摘要:
The plunger tube connector for a container for packaging a product, particularly a chemical product, comprises a body 18 provided with a through-bore 26 for the passage of the plunger tube, a gripping means 20 mounted on the body and provided with an opening 34 for the passage of said plunger tube, and a compression ring 22 arranged axially at least in part between the body and the gripping means, and comprising a surface 42 of contact with an outer surface of the plunger tube. The compression ring interacts with the body 18 and/or the gripping means 20 in order, when said body and said gripping means are brought closer to one another axially, to obtain a radial shift of said ring towards the inside.
摘要:
The present invention relates to a photocatalytic film including at least one polymer layer (1) including at least one photocatalyst, said layer being pervious to both the vapours of at least one fumigating compound and ultraviolet radiation capable of activating the photocatalyst. The present invention also relates to a method for treatment by fumigation using said photocatalytic film and at least one fumigant.
摘要:
A composition which can be used as an odorizing agent for a gas fuel, more particularly natural gas, comprising: 0.1 49.9 % alkyl sulfur (I) of formula R1-S-R2 wherein R1 and R2, are either the same or different and represent an alkyl radical having 1 - 4 carbon atoms; or R1 and R2 when taken with the sulfur atom to which they are attached represent a saturated or unsaturated cycle consisting of 3 - 5 carbon atoms, optionally substituted by a C1-C4 alkyl radical or C1-C4 alkenyl radical; 50 99.8 % alkyl acrylate (II) wherein the alkyl radical comprises 1 -12 carbon atoms, preferably 1 - 8; 0.001 0.1 % of a compound (III) which inhibits the polymerization of the alkyl acrylate (II) comprising a stable nitroxide radical.
摘要:
The invention concerns a composition for use in particular as odorant of a gas fuel, more particularly of natural gas, comprising: 0.1 to 49.9 particles by weight of at least one alkyl sulphur (I) of formula: R1-S-R2, wherein R1 and R2, identical or different, represent: an alkyl radical comprising 1 to 4 carbon atoms; or R1 and R2 together with the sulphur atom to which they are bound represent a saturated or unsaturated ring including 3 to 5 carbon atoms, optionally substituted by a C1-C4 alkyl or C1-C4 alkenyl; 50 to 99.8 parts by weight of at least two alkyl acrylates (II) the alkyl radicals of which comprise 1 to 12 carbon atoms, preferably 1 to 8; 0.001 parts by weight of at least one compound (III) inhibiting polymerization of the alkyl acrylates (II).
摘要:
A composition which can be used as an odorizing agent for a gas fuel, more particularly natural gas, comprising: 0.1 49.9 % alkyl sulfur (I) of formula R1-S-R2 wherein R1 and R2, are either the same or different and represent an alkyl radical having 1 - 4 carbon atoms; or R1 and R2 when taken with the sulfur atom to which they are attached represent a saturated or unsaturated cycle consisting of 3 - 5 carbon atoms, optionally substituted by a C1-C4 alkyl radical or C1-C4 alkenyl radical; 50 99.8 % alkyl acrylate (II) wherein the alkyl radical comprises 1 -12 carbon atoms, preferably 1 - 8; 0.001 0.1 % of a compound (III) which inhibits the polymerization of the alkyl acrylate (II) comprising a stable nitroxide radical.