baber/WOPTO huggingface dataset:
Patent EP-0235037-A3 (EP)
Title: Polyvalent matter and membrane or form for supporting bread products or the like during the proving and cooking of the dough
IPC: A21D8/06
Filed: 1987-02-20
Abstract: Multiple-purpose equipment for holding bread products or the like for dough proving, comprising, as individual base units: a tray with side walls (1), one or more replaceable and interchangeable, aerated or non-aerated, non-stick membranes or forms (2) each preformed to the dimensions and shapes of one or a number of bread products or Viennese bread products or pastries to be cooked, each of these interchangeable membranes or forms being placed, without being fastened, or at any rate being removable, on the tray. <IMAGE>
Patent EP-0282001-A3 (EP)
Title: Azoxy compounds and process for production thereof
IPC: C12N1/21
Filed: 1988-03-08
Abstract: Novel azoxy compounds having antifungal activity and being useful for therapy of mycoses, represented by the following formula <CHEM>    wherein X is - @- or -@@-. are prepared by culturing a microorganism of Streptomyces sp. (KC-7367, FERM BP-1277) and separating the compounds from the culture broth.
Patent EP-0299177-A3 (EP)
Title: Process and device for filling a strand of individual elements
IPC: H01B13/02
Filed: 1988-05-26
Abstract: For introducing a filler into a strand of twisted individual elements, in which the said elements are brought together at the twisting point to form a strand or a layer and the filler is simultaneously introduced, the filler is fed directly to the twisting point from the take-off side of the strand.
Patent EP-0302469-A3 (EP)
IPC: C07K1/113
Filed: 1988-08-03
Abstract: Reactivation of cysteine-containing protein in a 
process, in which a reduced and denatured cysteine-­
containing protein such as salmon growth hormone I or eel 
growth hormone I can be efficiently reactivated.
Patent EP-0310929-A3 (EP)
Title: Polyether silicone copolymers with secondary or tertiary hydroxy terminated for stabilizing high resiliency urethane foam
IPC: C09K23/54
Filed: 1988-09-28
Abstract: This invention describes molded flexible polyurethane foam surfactants which can be used in foam having high concentrations of reinforcing graft copolymer solids.
Patent EP-0314120-A3 (EP)
Title: Facade construction for rising structures
IPC: E06B3/54
Filed: 1988-10-27
Abstract: A facade construction for rising structures, in which facade panels (1) consisting of toughened safety glass or of other brittle materials possess immovably embedded anchoring bolts (5) projecting beyond the rear side (9) of the panels. These anchoring bolts (5) are intended to ensure the positive locking of the facade panels (1) to the furring (2). The anchoring bolts (5) are preferably invisible from the outside of the facade. If these anchoring bolts (5) are connected to one side (24) of rubber-metal connection members (23) and the other side (25) of the rubber-metal connection members (23) is connected to the furring (2) or directly to the building (4) or to a girder grid (3), there results a minimum of forces and moments to be absorbed by the toughened safety glass. <IMAGE>
Patent EP-0322578-A3 (EP)
IPC: B24B9/14
Filed: 1988-11-30
Abstract: Zum Zentrieren von optischen Linsen für die mechanische 
Halterung insbesondere beim Randschleifen und Facettieren 
bedient sich die Erfindung einer Vorrichtung mit einem ver­
windungssteifen Gehäuse (10), das Zentrierspindeln (18, 18′) 
mit Spannglocken (20, 20′) lagert, zwischen denen eine Linse 
(L) ausrichtbar und zur Schleifbearbeitung einspannbar ist. 
Ein motorischer Antrieb (M, R) wirkt auf einen Drehmoment­
teiler (50) der einen Führungskörper (52) zwischen axial und 
radial abgestützten Scheiben (58, 58′) aufweist. Deren 
Kraftschluß über einen Kugelkranz (54) mit steuerbarer An­
preßkraft, die über ein Druckstück (62) eingeleitet wird, 
gewährleistet absoluten Synchronlauf der geteilten Antriebs­
welle (14, 14′), die über Riementriebe (46, 46′) auf die 
Zentrierspindeln (18, 18′) wirkt.
Patent EP-0279510-A3 (EP)
IPC: B26B21/40
Filed: 1988-01-15
Abstract: A razor pack (10) adapted to hold a plurality of 
razors (R) of substantially identical configuration. The 
pack (10) comprises a plastic sleeve (24), which is 
formed to cover the top, the side and at least part of 
the bottom of the aligned razor heads. The individual 
razor heads are inserted in the sleeve (24) and the 
sleeve (24) is attached to a card having a raised rear 
portion (14), forming an abutment (17) for the back of 
the sleeve, and a closed front portion (13) forming a 
stop for the razor handles (22).
Patent EP-0276102-A3 (EP)
IPC: A61J9/00
Filed: 1988-01-18
Abstract: A baby feeding pack comprises a pouch-like bag for containing a liquid 
infant food or drink having walls (10,11) of flexible sheet plastics 
material and a gusset (14), also of a flexible plastics sheet 
material, sealed to the walls and carrying a teat (21) with a 
removable closure (23). The gusset (14) defines part of a sealed 
auxiliary compartment in which the teat (21) is disposed and protected 
from contamination and which is closed by a top seal (12) between the 
walls (10,11) or between the upper margins of a sheet which also forms 
the gusset. On opening the auxiliary compartment along a severance 
line (24), the gusset (14) can be inverted to form a frustoconical 
projection by which the teat (21) is presented for access for feeding.
Patent EP-0276984-A3 (EP)
IPC: C12Q1/68
Filed: 1988-01-26
Abstract: A method and assay kit for measuring anti-DNA 
antibody titres in biological fluids by an immunological 
method using a dsDNA label free of ssDNA fragments, wherein 
the dsDNA label is prepared by recombinant DNA techniques 
and having a constant length of a well defined kbp and a 
given specific activity and that such labeled dsDNA be used 
as the tracer in said immunological method.
Patent EP-0279572-A3 (EP)
IPC: C08L25/12
Filed: 1988-02-08
Abstract: Copolymers of vinyl aromatic, ethylenically 
unsaturated nitrile and, optionally, methyl 
methacrylate monomers, have an impact modifier 
comprising a) large grafted rubber particles of a 
rubbery alkyl acrylate polymer having a particle size 
from 0.5µm to 0.8µm, 0.04 to 0.5 percent by weight of a 
polymerized crosslinking monomer and from 0.5 to 40 
percent grafted rigid phase, and b) small grafted 
rubber particles of a rubbery alkyl acrylate polymer 
having a particle size from 0.05µm ro 0.20µm, 0.25 to 
2.0 percent of a crosslinking monomer and from 15 to 60 
percent by weight grafted rigid phase. The weight 
percentage of crosslinking monomer is at least twice 
the weight percentage of the crosslinking monomer in 
the large particle, and the weight ratio of large to 
small rubber particles is 5-80/95-20.
Patent EP-0288202-A3 (EP)
IPC: A61K31/19
Filed: 1988-04-13
Abstract: Compounds of Formula I 
  
are described. They are antagonists of leukotrienes 
and SRS-A.
Patent EP-0295103-A3 (EP)
IPC: C08K5/00
Filed: 1988-06-09
Abstract: A novel thermoplastic resin composition 
comprising a matrix of polyamide resin (E) and a 
disperse phase of a composition (D), said composition 
(D) comprising a polyphenylene ether (A), a rubber-­
like material (B) and a mutual compatibilizer (C), 
said polyphenylene ether (A) being obtained from at 
least one phenol compound represented by the formula: 
  
wherein R₁, R₂, R₃, R₄ and R₅ represent a hydrogen 
atom, a halogen atom or a substituted or unsubstituted 
hydrocarbon residue, with a proviso that at least one 
of them is a hydrogen atom, and said polyphenylene 
ether (A) having a reduced viscosity η sp/c  of 0.40 - ­
0.58 deciliter/gram, said mutual compatibilizer (C) 
being compatible or reactive with said polyphenylene 
ether and reactive with said polyamide resin, and 
said polyamide resin (E) having a number average 
molecular weight of 14,000 - 40,000 and an end amino 
group content of 50 - 95 mmole/kg, wherein the thermo­
plastic resin composition constitutes 1 - 65 wt.% of 
said polyphenylene ether (A), 1 - 20 wt.% of said 
rubber-like material (B), 0.01 - 5 wt.% of said mutual 
compatibilizer (C) and 35 - 97.99 wt.% of said poly­
amide resin (E), based on the total weight of said 
thermoplastic resin composition, and the weight 
average particle size of said disperse phase is 2 micron 
or less.
Patent EP-0300770-A3 (EP)
IPC: G02B1/08
Filed: 1988-07-20
Abstract: Inventions are the anthraquinonic colorant 
represented by the formula (I): 
  
wherein Q¹ and Q² are each independently substituted 
or unsubstituted anthraquinonyl groups, Z¹ and Z² 
are bridge groups, A is an aromatic divalent group, 
and n is 0 or 1, and the polarizing film which contains 
at least one colorant of present invention in a 
hydrophobic resin, which film has excellent durability 
and moisture resistance.
Patent EP-0319326-A3 (EP)
Title: Process for preparing 2,2-bis(4-hydroxyphenyl) propane of high purity
IPC: C07C37/82
Filed: 1988-12-02
Abstract: The process for preparing 2,2-bis(4-hydroxyphenyl)propane 
(bisphenol A) by reacting acetone with phenol and decomposing the 
resultant adduct of bisphenol A and phenol is well known. However, 
the quality of bisphenol A thus obtained is not always satisfactory.  
     In the process of this invention, the adduct is washed with 
phenol recovered by decomposing an adduct of bisphenol A and phenol, 
and then bisphenol A is prepared by decomposing the washed adduct.  
     The bisphenol A prepared by the process of this invention has 
an extremely high quality and is suitable for the preparation of 
polycarbonate used for optical parts.
Patent EP-0309423-A3 (EP)
Title: New benzimidazoline-2-oxo-1-carboxylic acid derivatives useful as 5-ht receptor antagonists
IPC: C07D471/08
Filed: 1988-09-19
Abstract: New pharmacologically active benzimidazoline-2-oxo-1-carboxylic acid derivatives which are 5-HT receptor antagonists useful as antiemetic agents and as gastric prokinetic agents of the following formula: <CHEM> wherein R represents a hydrogen atom, C1-6 alkyl, C1-6 alkenyl or C1-6 alkynil; R1 and R2 may be at the same time or not a hydrogen atom, halogen, trifluoromethyl, C1-6 alkyl, C1-6 alkoxy, C1-6 alkylthio, C1-6 acyl, carboxyl, C1-6 alkoxycarbonyl, hydroxy, nitro, amino optionally C1-4 alkyl N-mono or di-substituted, C1-6 acylamino, C1-6 alkoxycarbonylamino, carbamoyl optionally C1-4 alkyl N-mono or di-substituted, cyano, C1-6alkylsulphinyl, C1-6 alkylsulphonyl, amino sulphonyl optionally C1-4 alkyl N-mono or di-substituted, C1-4 alkyl N-mono or di-substituted aminosulphonylamino, aminosulphonylamino; Y is oxygen or is N - R3 in which R3 is a hydrogen, a C1-6 alkyl or optionally substituted by one or more C1-6 alkoxy benzyl; A is a group selected from: <CHEM> wherein p is 0, 1; r is 0, 1, 2, 3; R4 is hydrogen atom or a C1-4 alkyl; R5 is a hydrogen atom, C1-6 alkyl, C3-8 cycloalkyl, C3-8 cycloalkyl C1-4 alkyl,substituted phenyl C1-4 alkyl or R5 is a group of formula <CHEM> wherein R6 is hydrogen atom, C1-4 alkyl or an amino group and R7 is hydrogen atom or C1-6 alkyl, tautomers thereof and acid addition salts of the aforesaid compounds. The processes for the preparation of the compounds of formula (I) as well as pharmaceutical compositions containing them are also described.
Patent EP-0351502-A3 (EP)
IPC: C12N15/01
Filed: 1989-04-22
Abstract: Die Erfindung betrifft ein Verfahren zur Auswahl 
(Screening) Aminosäuren ausscheidender Stämme 
von Mikroorganismen, das es ermöglicht, produktivere 
Stämme für den Einsatz bei der Fed-Batch-Fermentation 
zu finden.
Patent EP-0342415-A3 (EP)
IPC: F01N3/023
Filed: 1989-04-28
Abstract: Rußfilter für Dieselfahrzeuge mit einem in einem Gehäuse (1) 
mit vorzugsweise konischen Abgaszu- und -abführstutzen (2, 3) an­
geordneten Filterkörper (4) mit einer Vielzahl zueinander 
paralleler Kanäle, die durch dünne Filterwandungen getrennt 
sind, wobei eine Hälfte der Kanäle (Rohgaskanäle) (5) zum Abgas­
zuführstutzen und die andere Hälfte (Reingaskanäle) (6) zum 
Abgasabführstutzen hin offen und zur jeweils anderen Seite 
abgeschlossen sind, wobei die Rohgaskanäle in eine Rußkammer (7) 
einmünden, die mit einer verschließbaren Ruß-Auslaßöffnung (8) 
versehen ist.
Patent EP-0340707-A3 (EP)
Title: Insulating material with a density of 0,1 to 0,4 g/cm3
IPC: C04B38/08
Filed: 1989-04-29
Abstract: An insulating material of 0.1-0.4 g/cc density consists of at least 50 vol.% silica aerogel particles of 0.5-5mm dia. bonded together by (in)organic binder(s). Prodn. of the insulating material involves coating and/or mixing silica aerogel particles with binder and hardening the material in a mould. The aerogel particles are pref. hydrophobic particles of 1-4mm dia. The binder may be an inorganic binder selected from cement, gypsum, lime and water glass or may be an organic binder, e.g. reaction adhesive such as epoxy resin adhesive, reactive polyurethane adhesive, phenol-, resorcinol-, urea- or melamine-formaldehyde resin, silicone resin adhesive, polyimide or polybenzimidazole resin, a melt adhesive such as ethylene vinyl acetate copolymer or polyamide, or an aq. dispersion adhesive such as styrene-butadiene or styrene-acrylic ester copolymer. The binder content is pref. 5-30 vol.%.
Patent EP-0351859-A3 (EP)
Title: Preparation process of block copolymers and resulting block copolymers
IPC: C08F297/02
Filed: 1989-07-20
Abstract: A preparation process of block copolymers which 
comprises conducting living polymerization of a 
(meth)acrylic ester substantially in the absence of 
water, by using a macromolecular compound having a 
functional end group represented by the formula (1): 
  
Wherein R is H or an n-alkyl group having from 1 to 3 
carbon atoms and R′ is H or an alkyl group having from 
1 to 6 carbon atoms,  
as a polymerization initiator and in the presence of a 
Lewis acid or in the presence of a donor compound of an 
anion selected from HF₂⁻, (CH₃)₃SiF₂⁻ or F⁻, as well 
as novel block copolymers prepared therefrom are dis­
closed.
Patent EP-0353553-A3 (EP)
IPC: B29C45/14
Filed: 1989-07-21
Abstract: The invention starts from a method of manufacturing elastomer stators, the elastomer of which shrinks after the stator has been finished. In order to increase the precision of the pump cavity, this space is initially made larger and wider. The metallic, annularly continuous casing externally surrounding the stator is then reduced in outside diameter, e.g. by means of a die. In this procedure, the elastomer is compressed radially in order in this way to bring the pump cavity to a precise internal dimension as a function of the diameter reduction, the internal dimension thus being independent of the shrinkage. 
<IMAGE>
Patent EP-0363932-A3 (EP)
IPC: B41N1/14
Filed: 1989-10-11
Abstract: Zur Bildung einer elektrostatisch wirkenden Druckform mit 
verbleibendem Ladungsbild wird vorgeschlagen, die Druck­
form (10) mit einer ferroelektrischen Schicht 12 zu ver­
sehen, die mittels konventioneller Methoden (13, 14) zur 
Erzeugung eines Ladungsbildes (15) ansteuerbar ist. Ein 
derartiges Ladungsbild ist nicht nur dauerhaft, sondern 
es kann auch so erzeugt werden, daß gleichzeitig zwei 
mit unterschiedlichen Zeichen geladene Farben im einem 
Druckprozeß übertragen werden können. Das ferroelektrische 
Material eignet sich auch zur Bildung von Tiefdruckformen, 
indem es den Boden der jeweiligen Tiefdrucknäpfchen bildet.
Patent EP-0380789-A3 (EP)
IPC: H04N5/14
Filed: 1989-12-09
Abstract: Bekannte Videoendstufen mit Sperrpunktregelung 
arbeiten bei breitbandigen Eingangssignalen nicht 
zufriedenstellend. Mittels der neuen Anordnung soll 
sowohl ein breitbandiger Betrieb der Videoendstufe 
als auch eine fehlerfreie Sperrpunktstrommessung 
möglich sein.  
     Dies wird im wesentlichen mittels einer 
Vorspannungsschaltung erreicht, welche außerhalb 
des Sperrpunktstrom-Meßzeitintervalles einen 
Ruhestrom im Videoendverstärker zuläßt und während 
des Sperrpunktstrom-Meßzeitintervalles einen 
Ruhestromfluß unterbindet.
Patent EP-0347006-A3 (EP)
Title: Butter-like spread
IPC: A23D7/00
Filed: 1989-06-16
Abstract: Butter-like spreads containing a fat with a relatively high level of fat solids, part of which being in granular form of a particle size not exceeding 20 micrometer and preferably ranging from 3 to 6 micrometer, such ensuring that the spreads have an acceptable hardness when spread on bread at refrigerator temperatures.
Patent EP-0389712-A3 (EP)
Title: Multiple use of water in safety system for nuclear reactor plants
IPC: G21C13/00
Filed: 1989-11-09
Abstract: A system for transferring water throughout the 
numerous components of a containment housing (12) of a 
water cooled nuclear fission reactor plant, e.g., for 
electrical power generators, is disclosed. The system 
comprises a fluid communication network (40,48,50,53,54, 
60,64,) and flow control means (44,46,52,55,56,62).
Patent EP-0375385-A3 (EP)
Title: Scale control
IPC: C02F5/14
Filed: 1989-12-20
Abstract: A method for the treatment of an aqueous system, typically hard water in a cooling system, is described which comprises adding thereto;   (i) a phosphonocarboxylic acid which contains at least 3 acid groups which are carboxylic and phosphonic acid groups, such that at least one acid group is a carboxylic acid group and at least one acid group is a phosphonic acid group, at least the said 3 acid groups being attached to carbon atoms, or a water-soluble salt thereof,   (ii) an amino phosphonic acid having the formula:  H2 - PO3(CH2)n - N (R1)(R2) in which R1 and R2 independently represent hydrogen, alkyl, especially of 1 to 4 carbon atoms, - (CH2)nPO3H2, or -(CH2)nCOOH, and n is 1 or 2, or a water-soluble salt thereof, and   (iii) an aminophosphonic acid oxide of the formula:  H2 - PO3(CH2)n - N(-->O)(R1)(R2) in which R1, R2 and n are as defined above, or a water-soluble salt thereof. a
Patent EP-0329598-A3 (EP)
Title: Flexible contact lens for enhanced movement on the eye
IPC: B29C39/02
Filed: 1989-02-15
Abstract: A flexible contact lens (20) is disclosed as having a 
central power portion (24), a peripheral flange portion 
(27), and an externally concave transition portion (26) 
joining the central portion and the flange portion, whereby 
the flange portion extends outwardly from the central 
portion in the manner of a hat brim. The inner edge of the 
peripheral flange is thereby raised from the eye surface to 
facilitate movement of the lens over the limbal region of 
the eye. The extent of the peripheral flange forward from 
the eye surface promotes eyelid contact to enhance movement 
of the lens on the eye. In a second embodiment (40), the 
lens further includes an externally convex transition 
portion (45) joining the central power portion (44) and the 
externally concave transition portion (46) to facilitate 
lens handling.  
     The invention also includes a method of producing such a 
flexible contact lens including the steps of a) forming a 
plastic mold on a tool which is a positive pattern of one 
surface of the desired lens, the resulting mold being a 
negative pattern of that surface, b) placing unpolymerized 
fluid material in the mold, c) rotating the mold to spread 
the fluid material at a desired thickness over the inner 
surface of the mold, d) polymerizing the fluid material by 
appropriate means such as heat or ultra violet radiation, 
and e) machining the opposite surface of the polymerized 
material to the desired lens configuration.
Patent EP-0330608-A3 (EP)
Title: Process of the development of photograhic print material
IPC: G03C5/30
Filed: 1989-02-02
Abstract: A process for the development of photographically exposed 
silver halide photographic print material which comprises 
treating the exposed print material in the presence of a 
isothiouronium or isothiourea compound as a development 
accelerator.
Patent EP-0352236-A3 (EP)
Title: Portable pipe-bending minimachine able to be manually - or motor-controlled and including an engaging/automatic disengaging device
Inventor: CAPORUSSO ALESSANDRO
IPC: B21D7/024
Filed: 1989-07-07
Abstract: Portable manually or motor-controlled pipe-bending minimachine which, in 
spite of its small size as compared with similar machines, is easier and 
handier to operate on site for the bending of pipes ranging 4 mm to 22 mm in 
diameter. The minimachine is provided with a reverse gear (53) and an 
intermediary device (50) built in the minimachine main body (11) which 
allows the engagement and automatic disengagement of the gear drive (40) 
transmitting rotary motion to the matrix-carrying shaft. Both the motor (90) 
and the manual control lever assembly (60) allowing alternate control of 
consecutive angular movements of matrix (16), can be easily and quickly 
mounted on the main body; and the countermatrix (24) is an interchangeable 
device to be mounted on a special support (20) allowing it to be 
appropriately positioned at the start of a bending operation.
Patent EP-0387726-A3 (EP)
IPC: B65H29/00
Filed: 1990-03-10
Abstract: Zwecks Übernahme, Abspeicherung und Abgabe von Falzprodukten (1) 
wird ein mit im Abstand voneinander angeordneten Halteblechen (19) 
versehenes Stahlband (18) um Rollen (z.B. 20) geführt. Dabei öffnen 
sich die Haltebleche (19), so daß die Falzprodukte (1) an der dem 
Falzrücken gegenüberliegenden Seite an einer Bogenhälfte (11) 
aufgenommen werden können.
Patent EP-0399220-A3 (EP)
IPC: C08J7/043
Filed: 1990-04-23
Abstract: The invention relates to prepregs of fiber-re­
inforced thermosetting resin that have a coating compris­
ing thermoplastic particles on one or both outer surfac­
es. Upon lamination of the prepregs into a composite, 
the layer comprising thermoplastic particles at the 
surface of the prepreg is formed into a discrete resin 
layer in the composite at the interface between fiber-re­
inforced thermosetting resin layers. The laminated 
composite materials have improved toughness and impact 
strength due to the thermoplastic particulate material at 
the interface and yet the composites still retain desired 
mechanical properties under hot/wet conditions.
Patent EP-0401853-A3 (EP)
IPC: E05B29/00
Filed: 1990-06-08
Abstract: Schließvorrichtung mit einem in einem Gehäuse (3) drehbar 
gelagerten Schließzylinder (2), der mit einem Schlüsselkanal 
(3) versehen ist, in den mindestens ein unter der Wirkung 
einer radial wirkenden Sperrfeder (5) stehendes Sperrteil 
(4) eingreift, das durch Einstecken des zugehörigen Schlüs­
sels (6) gegen die Wirkung der Sperrfeder (5) aus einer 
Sperrstellung in eine Betätigungsstellung gelangt, in wel­
cher der Schließzylinder (2) in eine Schließstellung oder in 
eine Öffnungsstellung bewegbar ist und das durch Herauszie­
hen des Schüssels (6) wieder in eine Sperrstellung gelangt. 
Diese Vorrichtung soll aus nur wenigen, leicht montierbaren 
Teilen bestehen. Deshalb ist der Schließzylinder (2) gegen 
die Wirkung einer Rückstellfeder (7) axial verschiebbar und 
das Sperrteil (4) gibt die axiale Beweglichkeit des Schließ­
zylinders (2) bei eingeschobenem Schlüssel (6) frei und 
sperrt bei herausgenommenem Schlüssel (6). Der Schließzylin­
der (2) ist durch axiales Verschieben und Drehen um bei­
spielsweise 90° von einer Öffnungsstellung in eine Schließ­
stellung oder umgekehrt bewegbar und rastet in beiden Stel­
lungen mit einem Rastvorsprung (32) in Rastausnehmungen 
(9,30) axial ein.
Patent EP-0402059-A3 (EP)
Title: Smoking article exhibiting reduced sidestream smoke, and wrapper paper therefor
IPC: D21H27/00
Filed: 1990-06-01
Abstract: The sidestream smoke associated with a cigarette (10) or cigarette-like smoking article is reduced by wrapping the tobacco (12) in a double layer (18a, 18b) of paper. Each layer includes calcium carbonate and a burn control chemical. The outer layer (18a) also preferably includes monoammonium phosphate and sodium carboxy methyl cellulose. The calcium carbonate employed has a relatively high surface area per unit weight. The porosity of the outer layer is adjusted by electrostatic perforation.