摘要:
Branched silicone (organopolysiloxane) resins and preparation method and use thereof are provided, which contain at least one group selected from phosphonate and phosphinate groups and at least one organic group containing nitrogen. Such silicone resins can be used in thermoplastic, thermosetting or rubber organic polymer compositions to reduce the flammability of the organic polymer compositions.
摘要:
The invention provides a process for improving the fire resistance of a thermoplastic or thermoset organic polymer composition, characterised in that an alkoxysilane containing at least one organic nitrogen-containing group and an alkoxysilane or silicone resin containing at least one group selected from phosphonate and phosphinate groups are added to a thermoplastic or thermosetting organic polymer composition and heated in the presence of moisture to cause hydrolysis and siloxane condensation of the alkoxysilane or alkoxysilanes. The alkoxysilanes, or alkoxysilane(s) and silicone resin, of the invention are particularly effective in increasing the fire resistance of polycarbonates and blends of polycarbonate with other resins such as polycarbonate/ABS blends.
摘要:
Branched silicone (organopolysiloxane) resins and preparation method and use thereof are provided, which contain at least one group selected from phosphonate and phosphinate groups and at least one organic group containing nitrogen. Such silicone resins can be used in thermoplastic, thermosetting or rubber organic polymer compositions to reduce the flammability of the organic polymer compositions.
摘要:
The invention provides a process for improving the fire resistance of a thermoplastic, thermoset or rubber organic polymer composition, characterised in that an alkoxysilane is added to a thermoplastic, thermosetting and rubber organic polymer composition and is heated to cause hydrolysis and condensation of the alkoxysilane. For example the alkoxysilane is a Benzoxazine triethoxysilane.
摘要:
A sealed stopper for an opening in a tubing for joining a chamber and a piping including a fastening ring is provided. The stopper includes a rigid bearing plate and a sealing member carried by the bearing plate, and includes a seal having a planar and flexible central portion with a reduced thickness extending below the bearing plate and a peripheral portion radially deformable by a central expander of the peripheral portion against the inner surface of the fastening ring.
摘要:
A sealed stopper for an opening in a junction tubing between an enclosure and a pipe, including an attachment ring. The stopper includes a rigid lid and a sealing assembly borne by the lid including a passive annular gasket including at least one annular internal chamber, a first static annular gasket, a second static annular gasket and a flat gasket ensuring the seal of the opening of the tubing.
摘要:
A method of forming a gel and/or powder of a metallic oxide, metalloid oxide and/or a mixed oxide or resin thereof from one or more respective organometallic liquid precursor(s) and/or organometalloid liquid precursor(s) by oxidatively treating said liquid in a non-thermal equilibrium plasma discharge and/or an ionised gas stream resulting therefrom and collecting the resulting product. The non-thermal equilibrium plasma is preferably atmospheric plasma glow discharge, continuous low pressure glow discharge plasma, low pressure pulse plasma or direct barrier discharge. The metallic oxides this invention particularly relates to are those in columns 3a and 4a of the periodic table namely, aluminium, gallium, indium, tin and lead and the transition metals. The metalloids may be selected from boron, silicon, germanium, arsenic, antimony and tellurium. Preferred metalloid oxide products made according to the process of the present invention are in particular oxides of silicon including silicone resins and the like, boron, antimony and germanium.
摘要:
A method of forming a gel and/or powder of a metallic oxide, metalloid oxide and/or a mixed oxide or resin thereof from one or more respective organometallic liquid precursor(s) and/or organometalloid liquid precursor(s) by oxidatively treating said liquid in a non-thermal equilibrium plasma discharge and/or an ionised gas stream resulting therefrom and collecting the resulting product. The non-thermal equilibrium plasma is preferably atmospheric plasma glow discharge, continuous low pressure glow discharge plasma, low pressure pulse plasma or direct barrier discharge. The metallic oxides this invention particularly relates to are those in columns 3a and 4a of the periodic table namely, aluminium, gallium, indium, tin and lead and the transition metals. The metalloids may be selected from boron, silicon, germanium, arsenic, antimony and tellurium. Preferred metalloid oxide products made according to the process of the present invention are in particular oxides of silicon including silicone resins and the like, boron, antimony and germanium.
摘要:
The invention relates to a machine for packing articles of different sizes which is accordingly intended to use containers that vary in their dimensions and particularly in height.It is characterized in that it includes a working plane 20 and a reference plane 22 that are substantially perpendicular to one another, and an ascending ramp 24-105-106 extending from one to the other, movable devices 23, 23a kinematically connected to a motor 45, guides located on the path that the closure panels 6 must follow in the course of the displacement of container-article sets 1, at least one pressure element 27-54 having a smooth active base 29, mounted to be movable perpendicular to the working plane 20 and elastically urged toward it, at least one pressure element 30-60 having a smooth active face 34, mounted to be movable perpendicular to the reference plane 22 and elastically urged toward it, and means 70 to 72 intended for the fixation of panels 6 of containers 1 equipped with their contents A.
摘要:
An aqueous styrene-acrylic type polymer dispersion useful as a wet strength adhesive contains at least one copolymer consisting of 0.5 to 5% by weight of N-allylacetoacetamide monomer (A) and 99.5 to 95% by weight of a mixture of monomers (B) consisting of 90 to 99.9% by weight of styrene and of at least one monomer selected from C.sub.1 to C.sub.8 alkyl(meth)acrylates and 10 to 0.1% by weight of at least one monomer selected from acrylic acid, methacrylic acid, acrylamide and methacrylamide.