Abstract: The present invention provides a cyclic sulfide compound represented by a general formula (I) ##STR1## (where R.sup.1 represents --CH.sub.2 --CH.sub.2 --, --CH.sub.2 --CH.sub.2 --CH.sub.2 --, --CH.sub.2 --O--CH.sub.2 --, --CH.sub.2 --O--, or --CH.sub.2 --S--). Polymerizable compositions for manufacturing optical products with this compound as their main component can be readily molded into plastic lenses which give superhigh refractive indices and high Abbe numbers or those which give high refractive indices and high Abbe number with low sp.grs. in addition thereto. The castings obtained from said polymerizable compositions are useful as plastic lenses for glasses, manifesting optical uniformity and being excellent in processability, transparency, and thermal, impact and light resistance. Further these polymerizable resin compositions are usable preferably as such optical products as prisms, optical fibers, optical disc substrates, color filters, or infrared absorption filters.

Abstract: Organopolysiloxanes which contain ester groups and comprise units of the formula ##EQU1## in which R may be an identical or different monovalent, SiC-bonded hydrocarbon radical having 1 to 18 carbon atoms,A may be an identical or different radical of the formula ##STR1## in which R.sup.1, R.sup.2, R.sup.3, c, v, w, s, t,is 0 or an integer, the sum of s and tbeing an integer from 1 to 20,x is 0 or 1,y is 0 or 1, the sum of x and y being 1 or 2,a is 0, 1, 2 or 3, andb is 0, 1 or 2,with the proviso that the sum of a and b is less than or equal to 3 and the organopolysiloxane contains at least one radical A per molecule.

Abstract: A method of co-hydrolyzing silanes of the formulas HSi(OR).sub.3 and Si(OR).sub.4 to form a soluble resinous co-hydrolysate is disclosed. The method comprises hydrolyzing the silanes with water in an acidified oxygen containing polar organic solvent. The invention also relates to the soluble co-hydrolysates formed thereby as well as the method of using the co-hydrolysates to provide coatings on various substrates, including electronic devices.

Abstract: Organosiloxane compositions curable to optically clear, high refractive index elastomers are disclosed. The cured compositions have superior post-folding high resolution recovery making them suitable for fabricating foldable intraocular lenses used in small-incision ophthalmic surgeries. The organosiloxane compositions include first and second vinyl terminated organosiloxanes differing in molecular weights, each containing diphenylsiloxane and dimethylsiloxane, and, in addition, fumed silica, a crosslinking reagent, a platinum containing catalyst, and optionally an ultraviolet absorbing compound.

Abstract: A mechanically peelable masking coating composition particularly useful for metals, and the method of preparing same for use is provided. The composition is heat curable in one or two heatings to produce a firmly adhering yet peelable coating. In its preferred form the composition comprises a mixture of a dispersion grade vinyl, a plasticizer, an adhesion promoter such as an epoxy, and optionally a thixotrope where greater resistance to sag and flow are desired. No fugitive solvents are required.

Abstract: Granulated preparations are provided by causing a granular, preferably spherical polyglycerol fatty acid ester having a melting poing of 40.degree.-80.degree. C. together with a powder for fluidized bed formation and heating the resulting fluidized mixture at a temperature in the vicinity of the melting point of the polyglycerol fatty acid ester. The powder may be contain as least one pharmacologically active ingredient. The polyglycerol fatty acid ester shows no crystal polymorphism and does not inactivate the pharmacologically active ingredient. Furthermore, the dissolution and release of the pharmacologically active ingredient can be controlled by varying the HLB of the polyglycerol fatty acid ester.

Abstract: Tetra-[N-alkyl-2,2,6,6-tetramethylpiperidin-4-yl]-4,4'-diphenylbisphosphoni te Abstract of the DisclosureNovel compounds of formula I ##STR1## wherein R is C.sub.1 -C.sub.4 alkyl, allyl or benzyl, as stabilisers for protecting organic materials from thermal, oxidative or light-induced degradation.

Abstract: A photosensitive polyimide precursor composition of the present invention comprises a polyimide precursor represented by the formula (6)(OR.sup.5).sub.k R.sup.4.sub.3-k Si--R.sup.3 --X--Z (6)and having a logarithmic viscosity number of 0.1 to 5.0 dl/g measured in N-methyl-2-pyrrolidone at 30.degree. C. and a compound capable of generating an acid by light irradiation, said polyimide precursor being obtained by reacting A mol of a tetracarboxylic dianhydride, B mol of a diamine, and C mol of an aminosilane so as to meet the relations of the equations: ##EQU1## This composition not only has practical photosensitivity but also inhibits the reduction of film thickness due to curing and development, and it is also excellent in shelf stability in varnish and adhesive properties to a substrate such as a silicon wafer or the like.

Abstract: A composition is disclosed, said composition comprising(A) a polydimethylsiloxane having a viscosity greater than about 2 cS at 25.degree. C.; and(B) a polyisobutylene oligomer having a number average molecular weight of about 200 to about 3,000 and having at least one end terminated with an epoxy-containing group, the weight ratio of said polydimethylsiloxane (A) to said polyisobutylene (B) being in the range 1:99 to 99:1.

Abstract: This invention relates to materials for medical or veterinary use that possess considerably improved properties with regard to friction. The invention also relates to the production of such materials from existing materials that possess suitable bulk properties, but inappropriate frictional properties. This invention also relates to a hydrophilic coating material that provides improved frictional properties.

Abstract: A coating composition and method for protecting anodized aluminum, and the coated product are disclosed, wherein the coating comprises a crosslinking agent; a film-forming resin selected from the group consisting of polyester polymers, thermosetting acrylic polymers, and mixtures thereof; and an epoxy silane. The combination provides exceptional adhesion of the coating to anodized surfaces as well as good hardness.

Abstract: A flame retardant capable of imparting a polyamide-containing resin with excellent flame retardancy without deteriorating the impact strength of the polyamide-containing resin even when it is incorporated in a small amount, and a flame-retardant polyamide-containing resin composition containing the above flame retardant and having practically sufficient impact strength. The flame retardant comprises 100 parts by weight of magnesium hydroxide, 2 to 750 parts by weight of red phosphorus and 0.2 to 250 parts by weight of an epoxy resin, and the flame-retardant polyamide-containing resin composition comprises 100 parts by weight of a polyamide-containing resin, 2 to 50 parts by weight of magnesium hydroxide, 1 to 15 parts by weight of red phosphorus and 0.1 to 5 parts by weight of an epoxy resin.

Abstract: There is provided a thermoplastic resin composition, the composition comprising1 to 99% by weight of polyarylenesulfide-type resin (I),99 to 1% by-weight of at least one resin (II) selected from the group consisting of polycarbonate-type polyphenyleneether-type resins, and ABS-type resins, and0.1 to 100 parts by weight, on the basis of 100 parts of the aforesaid resins (I)+(II), of a graft copolymer (III) as compatibilizer having a specific multi-phase structure.The thermoplastic resin composition containing the compatibilizer (III) of the present invention has a feature of each of the blended resins of a polyarylenesulfide-type resin (I) and at least one resin (II) selected from the group consisting of carbonate-type resins, polyphenyleneether-type resins and ABS-type resins, such as good impact and heat resistance, moldability, and appearance of molded articles. The composition is widely used for the manufacture of automobile parts, electrical and electronic components, and industrial parts, and the like.

Abstract: The present invention is novel organofunctional polysiloxane and organofunctional cyclosiloxane compositions and a process for their preparation. The process for preparation of these siloxane compositions comprises contacting a mixture containing a cyclo(organohydrogen)siloxane or a poly(organohydrogen)siloxane, a mono-.alpha.-olefin, and a .alpha.,.OMEGA.-triene with a platinum catalyst, at a temperature within a range of 50.degree. C. to 200.degree. C. The products of this process are cross-linked organofunctional polysiloxanes and cross-linked organofunctional cyclosiloxanes.

Abstract: Epoxy molding compositions for surface mount applications are disclosed. The compositions contain multifunctional epoxy resin and multifunctional hardener along with silicone rubber particles, organofunctional silicone fluid and a high loading of silica.

Abstract: Polymers of glucaric or xylaric acid with diprimary amines containing at least one heteroatom in the main chain form films when cast from aqueous solution and show adhesive properties. Unexpectedly, analogous polymers prepared using galactaric acid, an isomer of glucaric acid, do not form satisfactory films when cast from aqueous solution and exhibit poor or no adhesive properties. Copoly(aldaramides) comprising galactaric acid residues and either glucaric acid or xylaric acid residues, when prepared by reacting an equivalent weight of an activated galactarate with a product formed by reaction of two equivalents of a diprimary heterohydrocarbylenediamine with one equivalent of either an activated xylarate or glucarate also afford film-forming polymers which exhibit adhesive properties.

Abstract: The introduction of a room-temperature-curable organopolysiloxane composition that cures at room temperature to give a rubber whose surface is easily coated with paint and from which the resulting paint film does not delaminate readily and that after curing is free from staining of the surface of the rubber and any substrates in contact with the rubber.

Abstract: A method for the preparation of flexible polymeric foam by reacting a polyisocyanate component with an isocyanate-reactive component comprising at least 50% by weight of water, the polyisocyanate component comprising at least two polyisocyanate compositions, one of them being a low NCO isocyanate terminated prepolymer and the second being a high NCO polyisocyanate.

Abstract: A polymeric coating agent which comprises a polymer of from 60 to 97 wt. % of one or more (meth)acrylic monomers the polymerization of which can be initiated by free radicals, from 3 to 40 wt. % of at least one .alpha., .omega.-hydroxy-, carboxy-, and/or epoxy-functional polysiloxanes of the formula (I) ##STR1## wherein R' can be the same or different and is C.sub.1-6 alkyl, and R can be the same or different and is ##STR2## wherein Alk and Alk' are C.sub.1-6 alkylene and the alkylene groups in a molecule can be the same or different, n is a cardinal number from 8 to 40, m is a cardinal number from 2 to 30, and p is a cardinal number from 1 to 20 of solids in the monomers.

Abstract: Hydroxy-functionalized polyoxybutylene ether compositions having improved thermal and oxidative stability are prepared by the polymerization of a mixture of C.sub.4 epoxides in the presence of an organic initiator containing hydroxy groups.