Abstract: The present invention relates to novel compounds of the naphthopyran type which have a perfluoroalkyl group (X) in position 5. These compounds are of formula (I) given below: These compounds (I) possess interesting photochromic properties. The invention also relates to their preparation, their applications as photochromes as well as the compositions and matrices containing them.

Abstract: An oil-in-water emulsion composition comprising 0.5% to 20% by weight of a cationic emulsifier, up to 75% by weight of siloxane and water, wherein the siloxane is liquid and has units according to the formula Ra Si O4−a/2 wherein R is hydrocarbon or OH and a is 0 to 3 and wherein the cationic emulsifier is free from halogen in its counter ion, preferably methosulphate, etho-sulphate, acetate, tosylate, phosphate or nitrate. The siloxane preferably has a viscosity at 25° C. of from 10,000 to 1,000,000 mPa.s and is selected from polydimethyl siloxanes and polydimethyl polymethyl phenyl siloxanes. Also covered is a process of depositing siloxanes from such siloxanes.

Abstract: The object of the present invention is novel photochromic [indole]naphthopyran compounds and their methods of preparation.

Abstract: The invention relates to novel naphthopyran-type compounds having a lactam-type 6-membered ring annelated in position C5-C6. These compounds have the formula (I) given below: These compounds (I) have interesting photochromic properties. The invention also relates to their preparation, to their applications as photochromes, as well as to the compositions and (co)polymer matrices containing them.

Abstract: The foam control efficiency of a silicone antifoam in liquid or powder detergent formulations is improved by the use as an additive of an olefinically unsaturated alcohol, for example oleyl alcohol.

Abstract: The object of the present invention is a radically polymerisable composition comprising a mixture of at least: one or more (meth)acrylate difunctional monomer(s) of type (a): of formula (A) and/or of formula (A′); and one or more alkenic difunctional monomers of type (b): of formula (B) and/or of formula (B′) and/or of formula (B″). The invention also relates to the resins obtained by polymerization of the compositions and the ophthalmic articles constituted, wholly or in part, of the resins, and the articles may optionally have photochromic properties.

Abstract: The objects of the present invention are: a self-light-stabilized photochromic thermoplastic or thermoreticulated polymer carrying non-cyclic tertiary amide-functionalized pendant groups; its preparation method; photochromic articles constituted, wholly or in part of such a polymer. Said polymer is obtained advantageously by radical co-polymerization of a composition containing an effective amount of at least one monomer of the formula: in which: R1 is hydrogen or a methyl group; n is 2 or 3; R2 and R3 are identical or different and represent independently a methyl or ethyl group; and are advantageously identical; said monomer providing said photostabilizing non-cyclic tertiary amine-functionalized pendant groups.

Abstract: A dispensing device comprising a reservoir (2) and a one way valve (6) through which material may only be conducted into the reservoir (2). Reservoir (2) comprises a piston (16), a cylinder device (10) capable of permitting expansion of the capacity of the reservoir as material is conducted into the reservoir, an electrical switch means (18) adapted to detect and terminate the expansion of reservoir (2) at a predetermined capacity value, means for exerting pressure (10,16) on material within reservoir (2) when the expansion of reservoir (2) has been terminated and a one way valve (20) set to permit flow of material from reservoir (2) via an exit port whilst the pressure on the material in reservoir (20) is not less than a predetermined value.

Abstract: A composition capable of curing to form an elastomeric mass is disclosed which comprises a polymeric material having at least one hydroxyl or hydrolyzable group bonded to silicon, a crosslinking agent of the formula R—Si—(OR1)3 wherein R denotes an alkyl group having from 4 to 8 carbon atoms and each R1 independently denotes an alkyl or acyl group having from 1 to 20 carbon atoms and a catalyst compound comprising a titanium compound. A method of using the composition as a sealing material is also disclosed.

Abstract: The object of the present invention is a photochromic composition incorporating: +2-(p-dimethylaminophenyl)2-(p-methoxyphenyl)-5-methyl-7,9-dimethoxy-[2H]-naphtho[1,2-b]pyran (compound (I)), and +3-(p-methoxyphenyl)-3-phenyl-6-morpholino-3H-naphtho-[2,1-b]pyran (compound (II)). The invention also relates to said compounds (I) and (II) per se, (co)polymer matrices containing same, advantageously in a mixture, as well as finished products constituted wholly or in part of such matrices and/or containing one and/or the other of said compounds (I) and (II).

Abstract: The present invention relates to glasses of high refractive index having the following composition of oxides, expressed in percentages by weight: SiO2 29-35, B2O3 0.5-5, Li2O 0.5-3, Na2O 4-8, K2O 0-2, PbO 28-40, BaO 4-14, La2O3 4-12, TiO2 3-8, ZnO 0-8, ZrO2 0-4, Nb2O5 0-5, with: Li2O+Na2O+K2O 5.5-9; their use for the production of segments for multifocal corrective lenses; and multifocal corrective lenses incorporating at least one such segment in their structure.

Abstract: The object of the present invention is a novel inorganic glass, which is capable of being strengthened by ionic exchange, and which has a refractive index of between 1.67 and 1.72; said novel glass strengthened on the surface thereof; its method of strengthening; and the corresponding ophthalmic lenses. Said novel glass has the following composition, expressed in wt. % of oxides: SiO2 33-37 B2O3 7.5-13  with SiO2 + B2O3 44-48 Li2O 5-8 Na2O >2.5-7.5   K2O 0-2 with Li2O + Na2O + K2O <14 CaO   0-<8 Al2O3 0-6 Nb2O5  8-13 ZrO2 4-6 TiO2  5-10 La2O3 12-19 SrO 2-4 As2O3 and/or Sb2O3   0-0.8 (refining agents).

Abstract: The object of the present invention is brown solar glasses, absorbing UV or IR radiation, as well as solar ophthalmic lenses in said glasses. Said glasses have the following composition, expressed in percentages by weight: SiO2: 64-71; B2O3: 2-8; Al2O3: 0-4; ZrO2: 0-2; Li2O: 0-4; Na2O: 6-10; K2O: 7-16; CaO: 0-5.5; ZnO: 0-5.5; TiO2; 0-2; Fe2O3: 3-9; Co3O4: 0-0.030; NiO: 0-0.2; SeO2: 0.0030-0.1; As2O3: 0-0.1; Sb2O3: 0-0.1; SnO2: 0-0.1; Cl: 0-2; Br: 0-2; F: 0-2.

Abstract: A silicone oil-in-water emulsion containing a linear noncrosslinked silicone copolymer is prepared by polymerizing an OH endblocked polydimethylsiloxane monomer with an amine functional trialkoxysilane monomer in the presence of a metal catalyst. However, the polymerization is interrupted by the emulsification of this copolymer, and a carboxylic anhydride is added prior to the emulsification. The resulting emulsions are particularly useful in most personal care applications, and they also have value in textile fiber treatment, leather lubrication, fabric softening, as release agents, in water based coatings, for oil drag reduction, lubrication, and for the facilitation of cutting of cellulose materials.

Abstract: The main aim of the present invention is a method of preparing photochromic or non-photochromic organic pieces of optical quality and especially organic lenses, by radical polymerisation of a mixture of radically polymerisable monomers, characterised in that it comprises: a) adjusting, by pre-polymerisation, the viscosity of said mixture, to a value between 0.4 and 2 Pa.s; b) pouring said pre-polymerised mixture into a mould; c) photogelifying, in said mould, said pre-polymerised mixture until its gel point; d) completing the polymerisation of said pre-polymerised and gelified mixture in said mould, by heat treatment; adding effective amounts of at least one thermal catalyst and of at least one photoinitiator intervening in said mixture of monomers for the implementation of said pre-polymerisation, photogelification and polymerisation; said photoinitiator(s) intervening in an amount less than or equal to 0.009 parts by weight per 100 parts by weight of said mixture of monomers.

Abstract: This invention relates to organosilyl peroxide compounds which are stable in aqueous systems and are used for bleaching and cleaning applications. More particularly, this invention is concerned with the stability of bis(organosilyl)peroxides when formulated in aqueous and non-aqueous delivery systems. The liquid detergents containing the organosilyl peroxide compounds of this invention exhibit excellent bleaching performance and stain removal properties on fabrics at typical low wash temperatures.

Abstract: The specification describes and claims an insulating glass unit and a process for making. The unit comprises two glass panes spaced apart by a spacer of thermoplastics material adherent to the panes, an inert or heavy gas trapped within the unit and a layer of silicone elastomer located at the periphery of the unit between edge portions of the glass panes and in contact with external surfaces of the spacer. The thermoplastics material has a water vapor permeability of not more than about 0.2 l/m2/day (measured at 20° C. for 4 mm thickness) and a shear strength of more than 0.2 MPa as determined at a sealant thickness of 0.5 mm at 23° C. and a shear speed of 100 mm/min.

Abstract: An emulsion containing particles of an organopolysiloxane is prepared by (i) combining a silanol endblocked siloxane, an alkyltrialkoxysilane, water, and a nonionic surfactant or an anionic surfactant; (ii) emulsifying these ingredients by agitating these ingredients or by using a high shear device; (iii) adding a condensation specific acid catalyst to the emulsion; (iv) polymerizing the catalyzed emulsion to form an organopolysiloxane polymer; and (v) continuing polymerizing step (iv) until the resulting organosiloxane polymer has the desired viscosity. Organosiloxane polymers exhibiting improved release properties can be obtained by using alkyltrialkoxysilanes R′Si(OR″)3 where R′ and R″ each represent alkyl groups, and R′ contains at least eight, preferably at least twelve, and most preferably at least sixteen or more carbon atoms.

Abstract: The invention relates to novel naphthopyran- and phenanthropyran-type compounds having a carbobicycle annelated in 5,6-position. These compounds have formula (I) given below: These compounds (I) have interesting photochromic properties. The invention also relates to their preparation, to their applications as photochromes, as well as to the compositions and (co)polymer matrices containing them.

Abstract: The present invention relates to novel naphthopyrans having a cyclic group annelated in position 6,7. These naphthopyrans have formula (I) given below: These compounds (I) have advantageous photochromic properties. The invention also covers a method of preparing these naphthopyrans, as well as their applications as photochromes and compositions and (co)polymers matrices comprising them.