Abstract: Bioabsorbable, polyurethane-based stent coatings that comprise non-fouling coatings with polyethylene glycol and hyaluronic acid are disclosed. In addition to these coatings, medical devices comprising these coatings and methods of applying the coatings are disclosed.

Abstract: A polymer including a monomer represented by the following Formula and a photoresist composition including the same are disclosed. The polymer and photoresist composition can improve the resolution and the process margin due to the low activation energy of the deprotection reaction of the alcohol ester group including saturated cyclic hydrocarbyl group, and also can produce fine photoresist patterns because they have a stable PEB(Post Exposure Baking) temperature sensitivity, and further, can improve the focus depth margin and the line edge roughness of the resist layer. In the above Formula, R* is a hydrogen or methyl group, R1 is saturated hydrocarbyl group of 1 to 5 carbon atoms, R is mono-cyclic or multi-cyclic homo or hetero saturated hydrocarbyl group of 3 to 50 carbon atoms, and n is an integer of at least 2.

Abstract: Polyurethane compositions are produced in a two-stage method. In a first step, a diol component with a molecular weight of less than 2000 is reacted with a monomeric diisocyanate with a molecular weight of less than 500 and the unreacted monomeric diisocyanate is removed from this reaction product. In a second step, the resulting high-molecular diisocyanate is reacted with a polyol to produce a reactive prepolymer with isocyanate and groups. The addition of polyisocyanates which are capable of migration and which have a substantially lower vapor pressure than diphenylmethanediisocyanate, improves the addition behavior of the invention polyurethane compositions. Reactive polyurethane compositions of this type are suitable for using as binding agents for reactive one or two component adhesives/sealants, which may optionally contain solvents. These compositions are also suitable for producing reactive hot melt adhesives when suitable polyols are selected.

Abstract: Novel bicyclic-cannabinoids and hexahydrocannabinol analogs are presented. These compounds, when administered in a therapeutically effective amount to an individual or animal, results in a sufficiently high level of that compound in the individual or animal to cause a physiological response. The physiological response useful to treat a number of physiological conditions.

Abstract: The present invention relates to novel aromatic isocyanates obtained by partially hydrogenating naphthalene as well as the processes for preparing the same, and to their use as an isocyanate component in the production of polyurethanes.

Abstract: In accordance with the present invention, there are provided novel heterobifunctional monomers and users for the same. Invention compounds have many of the properties required by the microelectronics industry, such as, for example, hydrophobicity, high Tg values, low dielectric constant, ionic purity, low coefficient of thermal expansion (CTE), and the like. These properties result in a thermoset that is particularly well suited to high performance applications where typical operating temperatures are often significantly higher than those at which prior art materials were suitable. Invention compounds are particularly ideal for use in the manufacture of electronic components, such as, for example, printed circuit boards, and the like.

Abstract: The end-blocked isocyanate prepolymer having an oxadiazine ring according to the present invention is characterized in that at least one of isocyanate groups of a NCO-terminated isocyanate prepolymer, which has NCO groups at the ends and comprises units derived from an oxadiazinetrione compound (A) represented by the following formula (1) and units derived from an active hydrogen compound (B) represented by the following formula (2), is blocked with a unit derived from an end-blocking agent (C) having at least one active hydrogen in one molecule, and that the end-blocked isocyanate prepolymer has a softening point of not lower than 50° C.

Abstract: The invention relates to a process for preparing (1&agr;,3&agr;,5&agr;)(3-aminomethyl-bicyclo[3.2.0]hept-3-yl)-acetic acid, or an acid addition salt thereof.

Abstract: The invention concerns a saturated or unsaturated abietane derivative of general formula (I) wherein: Z is selected among —COOR5, —CONR1R2, —COONR3R4, —COR6, —CON, —COOR5, —CHOHR7, —SR8, —OR8, —CN, —CNO, —CNS, —NCO, —NCS and —R1R2CR9; wherein R1, R2, R3 and R4 represent a hydrogen atom, a C1-C10 alkyl, a C6-C20 aryl optionally substituted, a C7-C10 alkene, a C1-C10 alkyne, or an aminoacyl or peptidyl optionally substituted; or R1 and R2 or R3 and R4 together form a cycle or a heterocycle; R5 represents a hydrogen, a C1-C10 alkyl, a C1-C10 alkene, a C1-C10 alkyne, or an aryl optionally substituted into C6-C20; R6 represents a hydrogen, a halogen, a C1-C10 alkyl, a C1-C10 alkene, a C1-C10 alkyne, or an aryl optionally substituted into C6-C20; R7 represents a hydrogen, a C1-C10 alkyl, a C1-C10 alkene, or a C1-C10 alkyne; R8 represents a hydrogen, a C1-C10 alkyl, a C1-C10 alkene, or a C1-C10 alkyne; and R9 is selected among

Abstract: The present invention provides a process, which includes: partially trimerizing isophorone diisocyanate in the presence of a catalyst having the formula: [R—NX3]⊕Y⊖ wherein R and X are butyl groups and Y− is CH3COO−; or wherein R is a benzyl group, Y− is a carboxylate anion having from 4 to 8 carbon atoms and each X is an alkylene group having from 2 to 3 carbon atoms, wherein the three alkylene groups share a common carbon atom and, together with the N atom in the formula, form a tricyclic structure, and wherein at least one alkyene group has at least one OH group in an &agr; or &bgr; &ggr; position relative to the N atom, to obtain a monomer-containing polyisocyanurate mixture. The present invention also provides a monomer-containing polyisocyanurate mixture made from the above process.

Abstract: The invention provides novel isocyanate-based compounds. Such novel compounds can be used in essentially all applications where conventional isocyanate-based compounds are employed. In other words, the novel isocyanate-based compounds can be used in the making of liquid and powder coating compositions, adhesives, rigid and moldable plastics and foams. The isocyanate-based compounds of the present invention include a polyfunctional isocyanate compound which is at least partially blocked with at least one of the following: a polyhydroxy aromatic compound, or a mixture of a polyhydroxy aromatic compound and a hydroxy-functional ester compound. The present invention further provides compositions which include the aforementioned novel isocyanate-based compound as a component. These compositions can be in the form of liquid coating compositions, powder coating compositions, powder slurry coating compositions, plastic compositions, adhesive compositions, or polymeric foam compositions.

Abstract: The present invention is directed to a polymeric vehicle, the formulated coating composition and a coating binder made from the polymeric vehicle and a method for making the polymeric vehicle where the polymeric vehicle includes a phenol blocked isocyanate having reactive aliphatic hydroxyl groups. The phenol blocked isocyanate may be made from a phenolic ester alcohol having at least one aliphatic hydroxyl group and one phenolic hydroxyl group.

Abstract: The specification discloses a method and additive for increasing the surface activity of non-polar polymeric materials, and a non-polar polymeric material exhibiting increased surface activity. The invention employs an additive of the formulaA-B-A.sup.1wherein each of the A and A.sup.1 blocks which may be the same or different has a number molecular weight in the range of from about 200 to about 1000 daltons and is selected from the group substituted and unsubstituted alkyl, cycloalkyl, alkenyl, cycloalkenyl, aryl and alkylaryl units derived from one or more esters, organic acids, organic halides or organic acid halides, and units derived from alkyl or aryl isocyanates or ester-amides. The B-block is a polyepichlorohydrin unit derived from a polyepichlorohydrin polyol having at least two terminal hydroxyl groups and having an average molecular weight in the range of from about 400 to about 4000 daltons.

Abstract: Urethane-filled compositions are produced by reacting a dicyclohexylmethane diisocyanate residue or a dicyclohexylmethane diisocyanate residue containing mixture with a monofunctional alcohol containing at least one ether group in an amount such that the equivalent ratio isocyanate groups to hydroxyl groups is from about 0.9:1 to about 1:0.9. The diisocyanate residue or residue-containing mixture must contain at least 20% by weight monomeric diisocyanate and have a total NCO content of at least 10%. The diisocyanate residue is produced by phosgenating dicyclohexylmethane diamine in which less than 20% polymeric diamine is present. The urethane filled compositions produced in this manner may then be dissolved in either a polyol or a polyisocyanate and subsequently used to produce polyurethanes in known manner.

Abstract: A polyisocyanate having an acid value of at least 0.01% HCl is used to produce polyisocyanate, polyisocyanurate and polyurethane urea foams with an HCFC blowing agent. The use of such a polyisocyanate is advantageous because the polyisocyanate does not cause significant decomposition of the HCFC blowing agent.

Abstract: The present invention relates to a polyisocyanates containing allophanate groups and optionally isocyanurate groups that are prepared by reacting compounds whichi) are substantially free of hydroxyl groups and isocyanate groups,ii) have an average of at least two urethane groups per molecule andiii) are the reaction products of linear or branched, aliphatic isocyanates with organic hydroxyl compounds,with an excess quantity, based on the urethane groups, of 4,4'-bis-(isocyanatocyclohexyl)-methane to form polyisocyanates containing allophanate groups and optionally isocyanurate groups and optionally removing at least a portion of the unreacted excess 4,4'-bis-(isocyanatocyclohexyl)-methane. The present invention also relates to a process for the production of these polyisocyanates and to their use as binders or binder components in coating compositions.

Abstract: Isocyanate prepolymers having an NCO content of 1.5 to 5.0 wt. % and a monomeric diisocyanate content of less than 0.5 wt. % which are the reaction products ofA) aromatic or cycloaliphatic diisocyanates withB) mixtures ofB1) polyether polyols having a molecular weight of 1000 to 3000 andB2) polyester carbonate diols having a molecular weight of 700 to 3000,wherein components B1) and B2) are present in a weight ratio of 0.25:1 to 1.5:1;a process for the preparation of these isocyanate prepolymers by reacting the preceding starting materials at an NCO/OH equivalent ratio of at least 1.5:1 and optionally with subsequent removing unreacted monomeric diisocyanate by distillation; and the use of these isocyanate prepolymers as binders for sealing or coating compositions.

Abstract: Novel bicyclic alkyl dicarbamates are prepared from norbornadiene and other simple starting materials, and these are subsequently thermally cracked to novel diisocyanate norbornyl derivatives, which are, among others, useful for crosslinking active hydrogen compounds.

Abstract: Nonlinear-optic (NLO) compositions containing functionalized merocyanine dyes, such that the molecules, comprising the NLO-active compositions have a functional group at each end of the molecule and each functional group differing in reactivity, thus permitting stepwise reaction of each functional group, and NLO-active molecules prepared from hemioxonol dyes derviatived with (meth)acrylate or (meth)acrylamide groups, and their uses in devices such as second harmonic generators or polymer integrated optics.

Abstract: This invention pertains to alkyl substituted difunctional cyclohexylisocyanates having an isomer distribution. The isocyanates are represented by the formulas: ##STR1## wherein; R.sup.1 is C.sub.1-4 alkyl; R.sup.2 is C.sub.1-4 alkyl andn is 0 or 2.The invention also relates to polyurethane and polyurethane/urea resins prepared using the alkyl substituted difunctional cyclohexylisocyanates as at least a portion of the polyisocyanate used in forming the polyurethane.

Abstract: The invention relates to novel substituted aryloxyphenylthioureas, aryloxyphenylisothioureas and aryloxyphenylcarobodiimides of formula I ##STR1## wherein R.sub.1 is C.sub.1 -C.sub.12 alkyl, unsubstituted or substituted by one or more halogen atoms and/or C.sub.1 -C.sub.6 alkoxy groups; C.sub.3 -C.sub.8 cycloalkyl, unsubstituted or substituted by one or more C.sub.1 -C.sub.3 alkyl groups; or C.sub.3 -C.sub.8 cycloalkyl-C.sub.1 -C.sub.4 alkyl,R.sub.2 and R.sub.3 are each C.sub.1 -C.sub.5 alkyl or C.sub.5 -C.sub.6 cycloalkyl,R.sub.4 is hydrogen, methyl or --CHO,R.sub.5 is halogen; C.sub.1 -C.sub.4 alkyl, unsubstituted or substituted by one or more halogen atoms; C.sub.1 -C.sub.4 alkoxy, unsubstituted or substituted by one or more halogen atoms; or is a --CH.dbd.CH).sub.2, --CH.sub.2).sub.3 or --CH.sub.2).sub.4 bridge in 2,3- or 3,4-position,n is 0, 1, 2, 3 or 4,Z is --NH--CS--NH--, --N.dbd.C(SR.sub.6)--NH-- or --N.dbd.C.dbd.N--; andR.sub.6 is C.sub.1 -C.sub.