A porous biocomposite material including a polymer matrix having pores defined by several surfaces and collagen on the surface of the pores and the outer surfaces of the polymer matrix, the ratio, by weight, collagen to polymer matrix is from 20:80 to 40:60. The polymer matrix of the porous biocomposite material includes a copolymer which is prepared from a poly(ε-caprolactone) diol, a poly(lactide-co-glycolide) diol and a lysine diisocyanate (LDI). Also included are an implant which is a biodegradable, porous foam and with similar biomechanics to the normal meniscus, with tensile, compressive and tear strength, and preventing the pores from collapsing under condyle-tibia pressure. It serves as a scaffold for damaged meniscus repair or replacement, indicated for grade 3 or 4 terminal knee arthrosis, for the prevention of treatment, by cartilage regeneration, of advanced knee arthrosis, to avoid knee prostheses in young patients.

This application relates to flame-retardant coatings, and more particularly to an aminated phosphorene-based flame-retardant waterborne polyurethane coating and a preparation method thereof. The aminated phosphorene-based flame-retardant waterborne polyurethane coating is prepared from a diisocyanate-terminated prepolymer, a neutralizer and an aminated phosphorene, where the diisocyanate-terminated prepolymer is prepared from polymeric diol with water-dispersible groups, aliphatic diisocyanate and carboxylic acid type hydrophilic diol under the catalysis of a catalyst for synthesizing waterborne polyurethane.

The present invention relates to a porous membrane, process for the manufacture thereof and uses thereof.

The invention relates to a crystallization stable polyester prepolymers for producing HDI- and PDI-based, solvent free two component (2K)-polyurethane- and/or polyurea coating agents.

An adhesive includes: a urethane prepolymer (A) obtained by reacting a polyol (a) with a polyisocyanate (b) under such conditions that the molar ratio of NCO/OH is 0.5-0.9 and having a molecular-weight dispersion degree [(weight-average molecular weight (Mw))/(number-average molecular weight (Mn)); hereinafter referred to also as Mw/Mn] of 4-12; a polyfunctional polyol (B), and an isocyanate curing agent (C).

The invention provides non-naturally occurring microbial organisms containing caprolactone pathways having at least one exogenous nucleic acid encoding a butadiene pathway enzyme expressed in a sufficient amount to produce caprolactone. The invention additionally provides methods of using such microbial organisms to produce caprolactone by culturing a non-naturally occurring microbial organism containing caprolactone pathways as described herein under conditions and for a sufficient period of time to produce caprolactone.

A pressure sensitive adhesive composition includes a polyurethane polymer that includes the reaction product of a polyisocyanate component and a polyol component. The polyol component has a total solubility parameter ranging from 10 to 14 (cal/cm.sup.3).sup.1/2.

A biocompatible adhesive is provided comprising one or more water insoluble compounds of structure (1) wherein B is an oligomer derived from a polyester, polyether, polyalkylene glycol, polysilicone or polycarbonate with a MW<10,000 g/mol, Linker L is a urethane, urea bond, or amide bond; Linker L′ is a urethane or urea bond, A is a chain extender of Mw≤3000 g/mol comprising substituted or unsubstituted alkyl, cycloalkyl and/or aromatic groups, W is a terminal adhesive benzene-1,2-diol derivative or a terminal adhesive benzene-1,2,3-diol derivative, m is 0 or 1; and n is 0, 1, 2, 3 or 4; or a cross-linked polymer formed from said compounds. The compound(s) have a Tg lower than 25° C. The biocompatible adhesive is suitable for use without solvent.

An organic-inorganic hybrid material is disclosure. The organic-inorganic hybrid material contains 5˜50 wt % of inorganic compounds and has a characteristic peak at 1050±50 cm.sup.−1 in FTIR spectrum. Furthermore, the invention also provides a fabricating process of the organic-inorganic hybrid material as well as its starting material “isocyanates”. In particular, the isocyanates are prepared from carbonate containing compounds and amines.

A flexible gastight material for a landfill site includes a component A and a component B, the component A including: at least one of polypropylene glycol with a molecular weight of 600-4000, polytetrahydrofuran diol with a molecular weight of 1000-3000, polycaprolactone diol with a molecular weight of 1000-3000, and polycarbonate diol with a molecular weight of 1000-3000; and at least one of 2,4′-diphenylmethane diisocyanate, 4,4′-diphenylmethane diisocyanate, toluene diisocyanate, isophorone diisocyanate, and hexamethylene diisocyanate. The flexible gastight material for the landfill site provided in the present application has a micro-closed-cell foam structure. The closed-cell elastic structure of the flexible gastight material may block the volatilization of toxic and harmful odors, and may cut off the diffusion path of the odors by combining with gas treatment systems at the landfill site. The flexible gastight material has excellent water blocking and gas sealing performance.