Patent classifications
C08G18/77
Tint base paint formulation with a poly(oxyalkylene-urethane) associative thickener modified with a hydrophobic oligomer
The present invention relates to a composition comprising an aqueous dispersion of acrylic based polymer particles; less than 15 PVC of a pigment; and a hydrophobically modified poly(oxyalkylene-urethane) rheology modifier having a hydrophobic portion represented by Structure I: ##STR00001## Where R, R.sup.1, R.sup.2, m an n are defined herein. The composition provides viscosity stability for paint formulations containing a HEUR rheology modifier.
Amino acid derivatives and absorbable polymers therefrom
The present invention relates to the discovery of new class of hydrolysable amino acid derivatives and absorbable polyester amides, polyamides, polyepoxides, polyureas and polyurethanes prepared therefrom. The resultant absorbable polymers are useful for drug delivery, tissue engineering, tissue adhesives, adhesion prevention, bone wax formulations, medical device coatings, stents, stent coatings, highly porous foams, reticulated foams, wound care, cardiovascular applications, orthopedic devices, surface modifying agents and other implantable medical devices. In addition, these absorbable polymers should have a controlled degradation profile.
In-Situ forming foam for the treatment of vascular dissections
Systems and methods related to polymer foams for the treatment of blood vessel dissections are generally described. Some embodiments relate to compositions and methods for the preparation of polymer foams, and methods for using the polymer foams. The polymer foams can be applied to or within a dissection caused by an intimal tear in a blood vessel, sealing the dissection and preventing further perfusion thereof. In some embodiments, the polymer foam can be formed within a body cavity (i.e., in-situ foam formation). The foam may be used to fill the dissection as a thrombosing agent. In addition, the foam may be used in conjunction with medical devices such as stents, stent-grafts, balloons, and catheters.
Antibacterial mildewproof polyurethane composite material containing natural plant and a preparation method thereof
The invention discloses an antibacterial mildewproof polyurethane composite material containing natural plant and a preparing method thereof. The composite material comprises component A and component B with a ratio of component A and component B being 100:(20-50) by weight. The component A by weight comprises: 30-60 parts plant oil polyether polyols; 20-50 parts polyether polyols I; 5-20 parts polyether polyols II; 5-20 parts composite plant extract; 0-0.5 parts catalyst; 0.5-2 parts surfactant; 0-2 parts cross-linking agent; 1.5-3 parts foaming agents. The component B by weight comprising 20-50 parts modified MDI. The composite material made according to the preparation method of the invention shows a good stability and the polyurethane products made according to the preparation method is degradable. The antibacterial mildewproof natural plant adopted by the composite material in the invention enables the composite material to prevent the bacteria breeding effectively and provides environmental protection.
AMINO ACID DERIVATIVES AND ABSORBABLE POLYMERS THEREFROM
The present invention relates to the discovery of new class of hydrolysable amino acid derivatives and absorbable polyester amides, polyamides, polyepoxides, polyureas and polyurethanes prepared therefrom. The resultant absorbable polymers are useful for drug delivery, tissue engineering, tissue adhesives, adhesion prevention, bone wax formulations, medical device coatings, stents, stent coatings, highly porous foams, reticulated foams, wound care, cardiovascular applications, orthopedic devices, surface modifying agents and other implantable medical devices. In addition, these absorbable polymers should have a controlled degradation profile.
PROCESS FOR PREPARING A POLYISOCYANATE, POLYISOCYANATE, ITS USE AND POLYADDITION PRODUCTS PREPARED THEREFROM
The present invention relates to a process for preparing a polyisocyanate, namely an isocyanate group-terminated polyol polyanthranilic acid ester. The process comprises the step of reacting an anthranilic acid derivative selected from anthranilic acid halide (in particular anthranilic acid chloride), isatoic anhydride or a mixture thereof with a first polyol of a number-average molar mass of at least 200 g/mol and a functionality in the range of 2 to 8, and obtaining, as a result, a polyamine (namely a polyol polyanthranilic acid ester with amine terminal groups) and reacting the polyamine with phosgene and obtaining, as a result, a polyisocyanate (namely an isocyanate group-terminated polyol polyanthranilic acid ester). The invention further relates to the polyisocyanates obtained in this way, their use in polyaddition reactions, and polyaddition products obtainable by these reactions.
Polymers, Coating Compositions Containing Such Polymers, and Anti-Fingerprint Coatings Formed Therefrom
A substrate at least partially coated with an anti-fingerprint coating is prepared from a coating composition that includes: (a) an organic solvent; and (b) an alkoxysilane functional polymer having at least one ester linkage, at least one urethane linkage, and at least one alkoxysilane functional group. Further, the polymer is prepared from components including: (i) an active hydrogen functional compound having a hydroxyl group, amino group, thiol group, or a combination thereof; (ii) an intramolecular cyclic ester; and (iii) an isocyanate functional compound. The active hydrogen functional compound (i), the isocyanate functional compound (iii), or both (i) and (iii) have one or more alkoxysilane functional groups. Alkoxysilane functional polymers and coating compositions containing the same are also included.
Transparent member for automobile interior parts
The present invention relates to a transparent member for an automotive interior part. In one embodiment, the transparent member for the automotive interior part includes: a light source; an optical pattern layer formed over the light source; and a first light-transmitting skin layer formed on the optical pattern layer and including about 1 part by weight to about 25 parts of a first inorganic filler dispersed in 100 parts by weight of a first transparent resin matrix, wherein the first inorganic filler includes spherical calcium carbonate (CaCO.sub.3).
Polyurethane coating compositions
The present invention relates to non-aqueous coating agent compositions, containing at least one polyol (A), at least one silane-modified compound (B) of formula (I), optionally one or more silane-free aliphatic or cycloaliphatic polyisocyanates (C) having free or blocked isocyanate groups, and at least one catalyst (D) for the cross-linking of the silane groups. Furthermore, the non-aqueous coating agent compositions according to the invention can contain one or more surface additives (E) and one or more non-aqueous solvents (F).
ISOCYANATE COMPOSITION, METHOD FOR PRODUCING ISOCYANATE COMPOSITION, AND METHOD FOR PRODUCING ISOCYANATE POLYMER
An isocyanate composition according to the present invention contains an isocyanate compound of formula (1) and/or (2) (wherein R.sup.1 represents a hydrogen or a monovalent organic group, and R.sup.2 represents a monovalent organic group), and, relative to the total mass of the isocyanate compound in the composition, 1.0 ppm by mass to 10% by mass of a compound of formula (3): R.sup.13(COOR.sup.14)a (wherein R.sup.13 represents an organic group with a valence of a, R.sup.14 represents a monovalent organic group, and a represents an integer of 1 or 2), which is different from the isocyanate compound, and/or, 1.0 ppm by mass to 10% by mass of a compound having an UV absorption in an area of decamer or higher isocyanates in a measurement spectrum of gel permeation chromatography.
##STR00001##