The present invention relates to a binder composition comprising a) Component A comprising amino acid polymer(s) A1 and b) Component B comprising component B1 selected from the group consisting of pentoses, hexoses, disaccharides of pentoses and/or hexoses and mixtures thereof, wherein the amino acid polymer(s) A1 has(have) a total weight average molecular weight Mw, total of at least 800 g/mol and at most 10.000 g/mol and wherein the binder composition comprises at least 55 wt.-% amino acid polymer(s) A1 based on the total weight of the amino acid polymer(s) A1 and component B1.

The present invention relates to a binder composition comprising component A comprising polymer(s) A1 and optionally component B comprising component B1 which is selected from the group consisting of a mono-saccharides, disaccharides, droxyacetone, glycolaldehyde and mixtures thereof, wherein polymer(s) A1 comprises at least 70 wt.-% poly(amino acid)s based on the total weight of the polymers) A1 and has (have) a total weight average molecular weight M.sub.w, total of 800 g/mol to 10.000 g/mol, wherein the binder composition comprises 60 to 100 wt.-% polymer(s) A1, and 0 to 40 wt.-% component B1, based on the total weight of the sum of polymer(s) Al and component B1, wherein the weight amounts of the polymer(s) Al and component B1 are selected such that the total weight of the sum of polymer(s) A1 and component B1 is 100 wt.-%.

A system and method for treatment of biomass originating from wastewater treatment biosolids to obtain valuable adhesives and composite materials is described herein. Some embodiments do not require purification of a biomass product or residue to produce an adhesive.

A surgical sealant consisting of (1) a first agent comprising a gelatin derivative, wherein the gelatin derivative (a) has a weight average molecular weight of from 10,000 to 50,000; (b) has a hydrophobic group bonded thereto, the hydrophobic group being an alkyl group having 6 to 18 carbon atoms; (c) has a molar ratio of imino group/amino group of the gelatin derivative ranging from 1/99 to 30/70; and (d) comprises a structure represented by the following formula: GltnNHCHR.sup.1R.sup.2, wherein Gltn represents a gelatin residue, R.sup.1 is the hydrophobic group, and R.sup.2 is a hydrogen atom or the hydrophobic group; and (2) a second agent comprising a crosslinking agent for the gelatin derivative.

An adhesive includes an organic material, an inorganic material, a curing agent and a catalyst. The adhesive is able to bond the wood material, especially recycled wood material. The wood material is not necessary to have any pretreatment like removing color, pigment or plastic lining so as to be introduced to the film process directly. After breaking and adjusting the moisture content of the wood material, it can be mixed with the adhesive and hard pressed into wood product with good duration and quality. The adhesive and the production method of wood board is able to ameliorate the problem of the conventional water based adhesive to save energy and processing time.

An adhesive includes an organic material, an inorganic material, a curing agent and a catalyst. The adhesive is able to bond the wood material, especially recycled wood material. The wood material is not necessary to have any pretreatment like removing color, pigment or plastic lining so as to be introduced to the film process directly. After breaking and adjusting the moisture content of the wood material, it can be mixed with the adhesive and hard pressed into wood product with good duration and quality. The adhesive and the production method of wood board is able to ameliorate the problem of the conventional water based adhesive to save energy and processing time.

A method of joining and/or sealing tissues in a surgical procedure or medical treatment, comprising the steps of: (1) applying a matrix protein, a photoactivatable metal-ligand complex and an electron acceptor to a tissue portion; (2) irradiating said tissue portion to photoactivate the photoactivatable metal-ligand complex; thereby initiating a cross-linking reaction of the matrix protein to seal said tissue portion or join said tissue portion to an adjacent tissue portion.

A method of joining and/or sealing tissues in a surgical procedure or medical treatment, comprising the steps of: (1) applying a matrix protein, a photoactivatable metal-ligand complex and an electron acceptor to a tissue portion; (2) irradiating said tissue portion to photoactivate the photoactivatable metal-ligand complex; thereby initiating a cross-linking reaction of the matrix protein to seal said tissue portion or join said tissue portion to an adjacent tissue portion.

Disclosed herein are adhesive compositions for coating the print-bed of a 3D printer print platform. The compositions comprise a polyelectrolyte or mixture of polyelectrolytes with different additives and preservatives in a solvent. Also disclosed herein are methods of manufacturing the adhesive compositions.

Disclosed herein are adhesive compositions for coating the print-bed of a 3D printer print platform. The compositions comprise a polyelectrolyte or mixture of polyelectrolytes with different additives and preservatives in a solvent. Also disclosed herein are methods of manufacturing the adhesive compositions.