Abstract: A curable composition comprising: i) a glycidyl ether of a novolac, comprising or consisting of moieties having the formula (I), wherein —Ra is either always hydrogen or always methyl; —B is either always *—CH2-** or always formula (A); —a fraction of 0.8 to 0.99 of the Y moieties are essentially —O-glycidyl, this fraction being designated as x, and the remainder of the Y moieties, this fraction being designated as (1-x), are divalent bridging spacers of the structure *—O—CH2—CH(OH)—CH2—O—** connecting two moieties according to above formula (I); and—n is a number in the range of 0.1 to 3.0; and wherein said novolac glycidyl ether has an epoxy equivalent weight FEW in the range of 160 to 270 g/eq. and the average number of epoxy groups per molecule of novolac glycidyl ether (I), designated as f, is in the range of 2.1 to 5.0; ii) dicyandiamide; and iii) an urea derivative of the formula (II). This composition is stable upon storage at room temperature and fire-retardant.

Abstract: A curable composition comprising: i) a glycidyl ether of a novolac, comprising or consisting of moieties having the formula (I), wherein —Ra is either always hydrogen or always methyl; —B is either always *—CH2-** or always formula (A); —a fraction of 0.8 to 0.99 of the Y moieties are essentially —O-glycidyl, this fraction being designated as x, and the remainder of the Y moieties, this fraction being designated as (1-x), are divalent bridging spacers of the structure *—O—CH2—CH(OH)—CH2—O—** connecting two moieties according to above formula (I); and—n is a number in the range of 0.1 to 3.0; and wherein said novolac glycidyl ether has an epoxy equivalent weight FEW in the range of 160 to 270 g/eq. and the average number of epoxy groups per molecule of novolac glycidyl ether (I), designated as f, is in the range of 2.1 to 5.0; ii) dicyandiamide; and iii) an urea derivative of the formula (II). This composition is stable upon storage at room temperature and fire-retardant.

Abstract: The invention relates to a metal anchoring mesh intended to be secured to a metal wall of a chamber of a fluid catalytic cracking unit, in order to form cells (64). Said metal anchoring mesh comprises a plurality of wavy elementary parts (12, 14) connected successively together, forming cylindrical surfaces that are able to respectively define said cells, said cylindrical surfaces each having a central axis of symmetry A, the wavy elementary parts (12,14) each having protruding tongues (42?, 44?), said protruding tongues being able to extend respectively inside said cells (64). Said tongues (42?, 44?) extend along a length less than a quarter of the distance d that extends between said cylindrical surface and said central axis of symmetry A of said cylindrical surface.

Abstract: The invention relates to a gas injection element (10) for a system for distributing as gas inside a chamber of a fluid catalytic cracking unit. This injection element comprises a passage (14) passing right through it in a longitudinal direction (X), and —a metallic internal element (20) of which an internal surface (22) defines part of the through-passage (14) passing through in a longitudinal direction (X), —a hollow metal sleeve (30) accepting one end (20a) of the internal element (20) and attached thereto, —a hollow metal support (40) having an internal surface (42) defining the remainder of the through-passage passing through in the longitudinal direction (X), the said sleeve also being attached to one end of the support (40).

Abstract: The invention relates to an enclosure (10) of a fluid catalytic cracking unit in which an inner space is defined by a side wall (12) having a longitudinal axis extending substantially in the direction of gravity, said enclosure being provided with a plurality of mechanical separation cyclones (14, 16) located inside the inner space. The enclosure (10) comprises a supporting device (20) attached only to the cyclones (14, 16) by: an annular peripheral support element (202) extending along the side wall (12) in a plane perpendicular to the longitudinal axis (X), separated from the side wall by a predetermined clearance; and a plurality of beams (206, 208) extending in the same plane as the peripheral support element (202), the beams being rigidly connected to the peripheral support element and to at least one mechanical separation cyclone by one end or by an attachment part distant from the ends thereof.

Abstract: A honeycomb metal anchoring structure, as described herein, is formed from a plurality of strips assembled in pairs so as to define a plurality of cells. Each strip is divided along its length into a plurality of portions, including at least one series of planar assembly portions juxtaposed and assembled with a series of assembly portions of an adjacent strip by fastening means, each strip having a lower longitudinal edge intended to be applied against a wall to be protected and an upper longitudinal edge opposite the lower longitudinal edge. The anchoring structure additionally comprises a plurality of protective tabs connecting each pair of juxtaposed assembly portions each protective tab being attached to an assembly portion by a longitudinal join line and extending in the direction of the juxtaposed assembly portion, at least up thereto.

Abstract: The invention relates to a metal anchoring mesh intended to be secured to a metal wall of a chamber of a fluid catalytic cracking unit, in order to form cells (64). Said metal anchoring mesh comprises a plurality of wavy elementary parts (12, 14) connected successively together, forming cylindrical surfaces that are able to respectively define said cells, said cylindrical surfaces each having a central axis of symmetry A, the wavy elementary parts (12, 14) each having protruding tongues (42?, 44?), said protruding tongues being able to extend respectively inside said cells (64). Said tongues (42?, 44?) extend along a length less than a quarter of the distance d that extends between said cylindrical surface and said central axis of symmetry A of said cylindrical surface.

Abstract: The invention relates to a gas injection element (10) for a system for distributing as gas inside a chamber of a fluid catalytic cracking unit. This injection element comprises a passage (14) passing right through it in a longitudinal direction (X), and —a metallic internal element (20) of which an internal surface (22) defines part of the through-passage (14) passing through in a longitudinal direction (X), —a hollow metal sleeve (30) accepting one end (20a) of the internal element (20) and attached thereto, —a hollow metal support (40) having an internal surface (42) defining the remainder of the through-passage passing through in the longitudinal direction (X), the said sleeve also being attached to one end of the support (40).

Abstract: The invention relates to a honeycomb metal anchoring structure (10), formed from a plurality of strips (12) assembled in pairs so as to define a plurality of cells (14). Each strip (12) is divided along its length into a plurality of portions, including at least one series of planar assembly portions (121, 122) juxtaposed and assembled with a series of assembly portions of an adjacent strip by fastening means, each strip (12) having a lower longitudinal edge intended to be applied against a wall to be protected and an upper longitudinal edge opposite the lower longitudinal edge. The anchoring structure additionally comprises a plurality of protective tabs (16) connecting each pair of juxtaposed assembly portions (121, 122), each protective tab (16) being attached to an assembly portion (122) by a longitudinal join line (18) and extending in the direction of the juxtaposed assembly portion (121), at least up thereto.

Abstract: The invention relates to an enclosure (10) of a fluid catalytic cracking unit in which an inner space is defined by a side wall (12) having a longitudinal axis extending substantially in the direction of gravity, said enclosure being provided with a plurality of mechanical separation cyclones (14, 16) located inside the inner space. The enclosure (10) comprises a supporting device (20) attached only to the cyclones (14, 16) by: an annular peripheral support element (202) extending along the side wall (12) in a plane perpendicular to the longitudinal axis (X), separated from the side wall by a predetermined clearance; and a plurality of beams (206, 208) extending in the same plane as the peripheral support element (202), the beams being rigidly connected to the peripheral support element and to at least one mechanical separation cyclone by one end or by an attachment part distant from the ends thereof.

Abstract: The invention relates to a metal element (12) for anchoring an anti-erosion coating that is intended to be fastened alone in an isolated manner to a metal wall or assembled with other identical anchoring elements. The anchoring element (12) has an edge (12a) for fastening to said metal wall and an anchoring body firmly attached to the fastening edge (12a) and having an upper edge (12b) that is away from the fastening edge and intended to be covered by a composite material of concrete type. A section of this upper edge (12b), which is not intended to be juxtaposed and assembled with an upper edge of an identical anchoring element, is provided with a delimiting tab (16) in order to delimit a height of composite material that must cover the upper edge (12b) of said anchoring element, said delimiting tab (16) having a delimiting edge (18) that is a predetermined distance away from a plane defined by the upper edge (12b) of the anchoring element.

Abstract: The invention relates to a metal element (12) for anchoring an anti-erosion coating that is intended to be fastened alone in an isolated manner to a metal wall or assembled with other identical anchoring elements. The anchoring element (12) has an edge (12a) for fastening to said metal wall and an anchoring body firmly attached to the fastening edge (12a) and having an upper edge (12b) that is away from the fastening edge and intended to be covered by a composite material of concrete type. A section of this upper edge (12b), which is not intended to be juxtaposed and assembled with an upper edge of an identical anchoring element, is provided with a delimiting tab (16) in order to delimit a height of composite material that must cover the upper edge (12b) of said anchoring element, said delimiting tab (16) having a delimiting edge (18) that is a predetermined distance away from a plane defined by the upper edge (12b) of the anchoring element.

Abstract: The invention relates to a metal element (12) for anchoring an anti-erosion coating that is intended to be fastened alone in an isolated manner to a metal wall or assembled with other identical anchoring elements. The anchoring element (12) has an edge (12a) for fastening to said metal wall and an anchoring body firmly attached to the fastening edge (12a) and having an upper edge (12b) that is away from the fastening edge and intended to be covered by a composite material of concrete type. A section of this upper edge (12b), which is not intended to be juxtaposed and assembled with an upper edge of an identical anchoring element, is provided with a delimiting tab (16) in order to delimit a height of composite material that must cover the upper edge (12b) of said anchoring element, said delimiting tab (16) having a delimiting edge (18) that is a predetermined distance away from a plane defined by the upper edge (12b) of the anchoring element.

Abstract: A process for producing an anti-erosion coating on an inner or outer metal wall of a chamber of a fluid catalytic cracking unit, comprising: (i) the shaping of a honeycomb metal anchoring structure, said anchoring structure being formed from a plurality of strips connected in pairs by joining assembly portions of these strips so as to form a plurality of cells between two adjacent strips, (ii) the fastening of said anchoring structure by welding to said metal wall, so that each cell of the anchoring structure is welded to the wall of the chamber at least at the junctions between the contiguous assembly portions of two adjacent strips, and (iii) the insertion of a composite material into the cells from the metal wall and at least up to the upper longitudinal edge of each strip.

Abstract: The invention relates to a metal element (12) for anchoring an anti-erosion coating that is intended to be fastened alone in an isolated manner to a metal wall or assembled with other identical anchoring elements. The anchoring element (12) has an edge (12a) for fastening to said metal wall and an anchoring body firmly attached to the fastening edge (12a) and having an upper edge (12b) that is away from the fastening edge and intended to be covered by a composite material of concrete type. A section of this upper edge (12b), which is not intended to be juxtaposed and assembled with an upper edge of an identical anchoring element, is provided with a delimiting tab (16) in order to delimit a height of composite material that must cover the upper edge (12b) of said anchoring element, said delimiting tab (16) having a delimiting edge (18) that is a predetermined distance away from a plane defined by the upper edge (12b) of the anchoring element.

Abstract: A process for producing an anti-erosion coating on an inner or outer metal wall of a chamber of a fluid catalytic cracking unit, comprising: (i) the shaping of a honeycomb metal anchoring structure, said anchoring structure being formed from a plurality of strips connected in pairs by joining assembly portions of these strips so as to form a plurality of cells between two adjacent strips, (ii) the fastening of said anchoring structure by welding to said metal wall, so that each cell of the anchoring structure is welded to the wall of the chamber at least at the junctions between the contiguous assembly portions of two adjacent strips, and (iii) the insertion of a composite material into the cells from the metal wall and at least up to the upper longitudinal edge of each strip.

Abstract: The sabot (16) relates to a projectile (11) which can be accelerated in an accelerator comprising a tubular preaccelerator followed by RAM acceleration tubes. It consists of an outer band (18) which is designed in a way to be attached to the radial fins (13) at the rear of the projectile (11) and to support the peripheral sealing elements (25) and a subcaliber base plate (31) of relatively small thickness, which is designed in such a way that it rests on the outer band (18) with its perimeter, and if necessary on the projectile base (7) with its center part, and that it separates from the projectile (11) and the outer band (18) before the projectile (11) enters into the acceleration tubes.

Abstract: Compounds of general formula I ##STR1## wherein R.sup.2 is hydrogen unsubstituted C.sub.1 -C.sub.6 alkyl or C.sub.1 -C.sub.6 alkyl substituted by --OH, --CN or by --Si(OR.sup.3).sub.3-q R.sup.4.sub.q, or C.sub.2 -C.sub.6 alkenyl,R.sup.3 is C.sub.1 -C.sub.4 alkyl, or two radicals R.sup.3 together are C.sub.1 -C.sub.4 alkylene,R.sup.4 is C.sub.1 -C.sub.4 alkyl or phenyl, andq is from 0 to 2, andE is a radical of the formula ##STR2## wherein R.sup.5 is hydrogen or C.sub.1 -C.sub.4 alkyl andR.sup.6 is hydrogen, orR.sup.5 and R.sup.6 together are C.sub.4 -C.sub.8 alkylene, orandA is --(CH.sub.2).sub.r --O--, wherein r is 1,2 or 3, and p is 0 or 1, andY is oxygen or sulfur; andwhereinT is a radical --R.sup.9 --Si(OR.sup.3).sub.3-q R.sup.4.sub.q, a radical of the formula ##STR3## X is --S-- or --NH--, and Z is an organic radical derived from a polyisocyanate or polyisothiocyanate having at least 2 NCO or NCS groups, respectively,are suitable as adhesion promoters, especially for moisture-curing polyurethane resins.

Abstract: Compounds of the general formula I ##STR1## wherein R.sub.1 is hydrogen, C.sub.1 -C.sub.12 alkyl, C.sub.5 -C.sub.7 cycloalkyl, phenyl or benzyl,R.sub.2 is hydrogen or C.sub.1 -C.sub.4 alkyl, orR.sub.1 and R.sub.2, together with the linking carbon atom, form a 5- or 6-membered ring, andR.sub.3, R.sub.4, R.sub.5 and R.sub.6 are identical or different and are hydrogen, C.sub.1 -C.sub.12 alkyl, phenyl or phenyl substituted by 1 to 3 members selected from the group consisting of C.sub.1 -C.sub.4 alkyl, halogen or C.sub.1 -C.sub.4 alkoxy or are a group of formula --CH.sub.2 OR.sub.11, where R.sub.11, where R.sub.11 is C.sub.1 -C.sub.12 alkyl, phenyl or phenyl substituted by 1 to 3 members selected from the group consisting of C.sub.1 -C.sub.4 alkyl, halogen or C.sub.1 -C.sub.4 alkoxy, or are --C(O)--R.sub.12, and R.sub.12, and R.sub.12 is C.sub.1 -C.sub.12 alkyl,R.sub.7 is C.sub.1 -C.sub.4 alkylene, R.sub.8 is C.sub.1 -C.sub.8 alkylene, R.sub.9 is C.sub.1 -C.sub.4 alkyl, or two radicals R.sub.9 together are C.sub.