Abstract: The invention relates to thermosetting powder coating compositions comprising an unsaturated resin comprising ethylenic unsaturations and a thermal radical initiator comprising a first thermal radical initiator, wherein the first thermal radical initiator is a methyl-substituted benzoyl peroxide abbreviated herein as MBPO. The invention further relates to a process for making said thermosetting powder coating composition and processes for coating an article with said thermosetting powder coating composition. The invention further relates to a cured thermosetting powder coating composition derived upon curing of the thermosetting powder coating composition of the invention. The invention further relates to an article having coated thereon said thermosetting powder coating composition as well as to an article having coated and cured thereon said thermosetting powder coating composition.

Abstract: A dendritic polymer and a magnetic resonance imaging contrast agent employing the same. The magnetic resonance contrast agent includes the dendritic polymer according to the structure of SP-DZ-L)i)j or SP-DX-Z-L)i)j, wherein, S is cyclosilane moiety with j silicon oxygen residual groups, and j is not less than 2; P is CH2CH2Ol, and l is not less than 1; D is a C3-30 dendritic moiety having n oxygen residue, and n is not less than 3; X is C3-30 moiety having bi-functional groups; Z is a C3-20 moiety having a plurality of functional group; and L is a metal cation.

Abstract: A dendritic polymer and a magnetic resonance imaging contrast agent employing the same. The magnetic resonance contrast agent includes the dendritic polymer according to the structure of SP-DZ-L)i)j or SP-DX-Z-L)i)j, wherein, S is cyclosilane moiety with j silicon oxygen residual groups, and j is not less than 2; P is and l is not less than 1; D is a C3-30 dendritic moiety having n oxygen residue, and n is not less than 3; X is C3-30 moiety having bi-functional groups; Z is a C3-20 moiety having a plurality of functional group; and L is a metal cation.

Abstract: Disclosed herein is an organic polymer semiconductor compound, a method of forming an organic polymer semiconductor thin film using the same, and an organic thin film transistor using the same. Example embodiments of this invention pertain to an organic polymer semiconductor having a side chain including a removable substituent, and to an organic thin film transistor using the organic polymer semiconductor for an organic active layer, which has lower leakage current, higher charge mobility, and/or a higher on/off ratio.

Abstract: An object is to provide a curable composition having a good curability by use of an organotin-free catalyst, and the object is solved by a curable composition, comprising: (A) a polymer having a silicon group which can be crosslinked through formation of a siloxane bond, (B) fluorosilanes represented by general formula (1): R14-aSiFa (1) (wherein R1's, the number of which is 4-a, are each independently a substituted or unsubstituted hydrocarbon group having 1 to 20 carbon atoms, or at least one selected from the group consisting of siloxy groups represented by R23SiO— (wherein R2's are each independently a substituted or unsubstituted hydrocarbon group having 1 to 20 carbon atoms or a fluorine atom), and a is any of 1, 2 or 3), and (C) an amine based compound.

Abstract: High refractive index, melt processable polyphosphonates and methods for preparing the same are provided. These polymers are particularly useful for optical and ophthalmic parts, such as lenses. A method of preparing optical and ophthalmic lenses by injection molding the polymers of the present invention into the form of the optical or ophthalmic lenses is also provided.

Abstract: High refractive index, melt processable polyphosphonates and methods for preparing the same are provided. These polymers are particularly useful for optical and ophthalmic parts, such as lenses. A method of preparing optical and ophthalmic lenses by injection molding the polymers of the present invention into the form of the optical or ophthalmic lenses is also provided.

Abstract: An aqueous dispersion of a fluorocopolymer, which is excellent in stability and film-forming properties as an aqueous dispersion and which gives a coating film excellent in weather resistance and mechanical strength and improved in water resistance and stain resistance. The aqueous dispersion comprises water and dispersed therein a fluorocopolymer which comprises (a) polymer units based on a fluoroolefin, (b) polymer units based on propylene, (c) polymer units based on ethylene and/or (d) polymer units based on butylene and which has a melting point within a range of from 40 to 150° C.

Abstract: An antistatic composition is provided for use with a label construction which includes an organic cationic polyelectrolyte, a binder, and a surfactant. The composition is preferably used in a label construction comprising a polymer film substrate having a pressure sensitive adhesive on its second surface, a release liner overlying the pressure sensitive adhesive, with the antistatic composition being provided on the second surface of release liner. The antistatic composition reduces the surface resistivity of the second surface of said release liner. The antistatic composition may also be used in combination with a toner adhesion-enhancing coating which is provided on the first surface of the substrate to improve print quality. The labels may be stacked or provided in roll form such that the antistatic composition reduces the coefficient of friction between adjacent labels and prevents the build-up of static charges on the labels.

Abstract: A process for the preparation of branched thermoplastic resins comprising: heating a mixture of an unsaturated resin, a free radical initiator, and a stable free radical agent; adding to the heated mixture at least on polymerizable monomer; and cooling the mixture, wherein the resulting product is a branched thermoplastic resin with arms or branches comprised of polymerized monomer with substantially uniform length and narrow polydispersity.

Abstract: A process for the preparation of branched thermoplastic resins comprising: heating a mixture of an unsaturated resin, a free radical initiator, and a stable free radical agent; adding to the heated mixture at least on polymerizable monomer; and cooling the mixture, wherein the resulting product is a branched thermoplastic resin with arms or branches comprised of polymerized monomer with substantially uniform length and narrow polydispersity.

Abstract: A process for the preparation of branched thermoplastic resins comprising: heating a mixture of an unsaturated resin, a free radical initiator, and a stable free radical agent; adding to the heated mixture at least on polymerizable monomer; and cooling the mixture, wherein the resulting product is a branched thermoplastic resin with arms or branches comprised of polymerized monomer with substantially uniform length and narrow polydispersity.

Abstract: A stabilized polysilazane obtained by reacting an inorganic polysilazane having a number average molecular weight of about 100 to about 100,000 with an alcohol, an organic acid, an ester, a ketone, an aldehyde, a mercaptan, or an alkysilazane preferably at a molar ratio of from 50/50 to 99.99/0.01 is described.

Abstract: Block copolymers of the formula ##STR1## wherein R.sub.1, R.sub.2, and R.sub.3 are independently selected from the group consisting of hydrogen, alkyl and aryl; k, j, m and n represent the number of repeating segments, and imaging members thereof.

Abstract: A photopolymerizable composition comprising (a) an addition polymerizable compound having a boiling point of 100.degree. C. or high under an atmospheric pressure, (b) a photoinitiator, and (c) a benzene derivative can provide a cured film having high strength suitable for producing, e.g. printed circuit boards.

Abstract: Thermosettable ethylenically unsaturated resins are rendered storage stable by the addition of a complex formed by mixing (a) at least one quinonoid compound and (b) at least one imidazole compound. The reactivity of these storage stable resins with curing agents is not significantly reduced by the presence of the stabilizer complex.

Abstract: Block copolymers composed of recurrent structural units belonging to the series comprising polysiloxanes and recurring structural units belonging to the series comprising homopolymers, copolymers or terpolymers of vinyl-aromatic compounds and acrylic monomers of mixtures thereof.

Abstract: A curable thermosetting resin composition with improved tensile strength, modulus and glass transition temperatures, without a sacrifice in tensile elongation to break, which comprises a blend of:(A) an epoxy resin compound containing at least one vicinal epoxy group in the molecule, and with a curing amount a primary or secondary amine containing curing agent; and(B) a polyester resin with an effective amount of a free radical initiator;where A and B are blended in a ratio of from about 20:80 to about 80:20% by weight, preferably 40:60 to about 75:25% by weight, and more preferably 60:40 to about 75:25% by weight.

Abstract: The invention relates to the use of novel N,N-disubstituted arylamines containing polymerizable groups as hardening accelerators for polymerizable compositions based on unsaturated polyester resins, in particular for trowelling and water compositions.

Abstract: Bisimide resins having improved fracture toughness and resistance to microcracking comprise a mixture of,(a) a bisimide of the general formula (I) ##STR1## in which B represents a divalent radical containing a carbon-carbon double bond and A is a divalent radical containing at least two carbon atoms and(b) a polyisocyanate of the general formula (II)D(NCO).sub.x (II)in which x has a value of between 2 and 4 and D stands for an x-valent radical.

Abstract: An unsaturated polyester, such as propylene glycol-maleic acid-phthalic acid prepolymer dissolved in styrene is interpolymerized with an ultraviolet absorber of the formula: ##STR1## and/or an antioxidant of the formula ##STR2## where R and R.sup.2 are selected from H or lower alkyl such as methyl and R.sup.1 is tertiary alkyl such as tertiary butyl to form a polymer stable to exposure to the outdoors without degradation by ultraviolet radiation, thermal and/or photooxidation.

Abstract: Bisimide resins having improved fracture toughness and resistance to microcracking comprise a mixture of,(a) a bisimide of the general formula (I) ##STR1## in which B represents a divalent radical containing a carbon-carbon double bond and A is a divalent radical containing at least two carbon atoms and(b) a polyisocyanate of the general formula (II)D(NCO).sub.x (II)in which x has a value of between 2 and 4 and D stands for an x-valent radical .

Abstract: Anaerobically-curing compositions are described comprising (A) a polymerizable monomer; (B) a halogen-containing compound as a first initiator component; (C) an amine, organic sulfimide or perfluoroalkyl sulfonanilide as a second initiator component; and (D) an inhibitor of free-radical polymerization. These compositions are particularly suitable as adhesives and may be formulated as thread-locking adhesives or may be modified by the addition of various modifying polymers to obtain desired properties such as increased viscosities or pressure-sensitive properties.

Abstract: A coating composition is disclosed which is curable under the influence of ultraviolet light and which comprises a U.V.-curable binder, a photoinitiator and as accelerator a polycyclic condensation product of formaldehyde or acetaldehyde and an aliphatic or cycloaliphatic diprimary 1,2-diamine. The U.V.-curable binder is preferably an adduct containing at least one isocyanate group of (a) an acrylic or methacrylic hydroxy ester having 5 to 20 carbon atoms and (b) a polyisocyanate having 4 to 44 carbon atoms and 2 to 4 isocyanate groups.

Abstract: Curable coating agents, a process for the production of scratch-resistant coatings on plastics, and articles coated by this process.The coating agents are polycondensates ofa reaction product, containing two or more carbon-carbon double bonds and one or more hydroxyl or alkoxy groups per molecule, obtained from an olefinically unsaturated silane containing 2 or more hydroxyl or alkoxy groups, whose olefinically unsaturated organic radical is bonded via a C-Si bond, and a hydroxyl-containing .alpha., .beta.-olefinically unsaturated monomer,an olefinically unsaturated silane of the general formulaR.sup.1 --Si(OR.sup.2).sub.3where R.sup.1 is a vinyl radical or an alkyl acrylate or alkyl methacrylate radical bonded to the Si atom via a C--Si bond and R.sup.2 is hydrogen or a saturated hydrocarbon radical, anda saturated silane of the general formula ##STR1## where R.sup.3 and R.sup.

Abstract: This invention relates to an improved three component promoter for enhancing the cure rate of a molding compound comprising an unsaturated polyester resin and an unsaturated monomer copolymerizable therewith. The presence of the three component promoter system substantially enhances the cure rate of the molding compound while at the same time substantially lengthening the shelf life of the prepromoted resin. The three component system comprises a cobalt salt in the plus 2 valence state with the cobalt being present in an amount to provide from about 0.0005-0.06 parts cobalt metal per 100 parts unsaturated polyester resin (including unsaturated monomer), a copper salt, the salt being present in an amount to provide from 0.01-1.times.10.sup.

Abstract: A reaction product of (1) resin containing a plurality of electron deficient ethylenically unsaturated groups and (2) a polyazlactone. The product may be formed without the liberation of a gas and cured at a higher temperature with the liberation of a gas to thereby form foamed product.

Abstract: Disclosed is a solution including an aromatic bis (ether dicarboxylic acid) component, an organic diamine component and a solvent system including a water-soluble organic solvent component, which may be a dipolar aprotic solvent or a monoalkyl ether of ethylene glycol or of diethylene glycol, and optionally water. The solution may be coated on a substrate and polymerized to form high quality polyetherimide coatings.

Abstract: Amines, amides and amidines work as accelerators for polymerization reactions with initiators of the 1.2-diphenyl ethane type.