1. |
- Brumer, Harry, et al.
(författare)
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Cross-Linking Involving a Polymeric Carbohydrate Material
- 2005
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Patent (populärvet., debatt m.m.)abstract
- The present invention relates to a method of cross-linking a polymeric carbohydrate material with a second material by means of a soluble carbohydrate polymer and a crosslinking agent. The present invention furthermore relates to the resulting cross-linked material, to uses of the cross-linked material, as well as to a kit comprising the soluble carbohydrate polymer and the cross-linking agent.
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2. |
- Zhang, L., et al.
(författare)
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Method for prepn. of biological degradability regenerative cellulose waterproof film and cellulose products
- 1998
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Patent (populärvet., debatt m.m.)abstract
- A process for preparing water-proof regenerated cellulose film and water-proof cellulose products freatures use of biodegradable water-proof paint which is composed of pre-polymer of polyurthane, nitrocellulose, SO1-17 liquid, ethyl acetate and less N, N -dimethyl ethanolamine. Its technological steps include coating the surface of regenerated fibre film or cellulose product with and solidifying at 70-90 deg. C for 1-5 min. Obtained products have obviousely improved water-proof nature and tension strength over than 350 kg/sq. cm after immersed in water. The water vapour penetrating it is 0.004-0.005 g.sq. cm. d. It is fully biodegradable.
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3. |
- Zhou, Qi, et al.
(författare)
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Copolymer, modified polymer carbohydrate material, modified buld polymer, composite material, and methods of preparation
- 2006
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Patent (populärvet., debatt m.m.)abstract
- The present invention relates to a novel group of copolymers comprising a soluble carbohydrate polymer (SCP), which typically is a non-starch carbohydrate, and a macromolecule covalently attached to the SCP. The macromolecule may e.g. be a hydrophobic copolymer, a polyelectrolyte polymer or a biodegradable polymer. The present invention furthermore relates to a method of preparing the copolymer, products comprising the copolymer, and to methods of preparing the products comprising the copolymer. The products comprising a copolymer are for example a polymeric carbohydrate material (PCM) modified by attachment of a copolymer, and a composite material comprising the modified PCM.
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4. |
- Zhou, Qi, et al.
(författare)
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Process for preparing hydroxy ethyl cellulose
- 2002
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Patent (populärvet., debatt m.m.)abstract
- The present invention discloses a new method for cellulose in NaOH / Urea homogeneous hydroxyethyl Preparation hydroxyethylcellulose. The method of the cellulose is completely dissolved in 6wt% sodium hydroxide / 4wt% aqueous solution of urea, and 2-chloroethanol with hydroxyethyl cellulose homogeneous reaction in the aqueous solution used successfully prepared water-soluble hydroxyethyl cellulose. No significant degradation of cellulose occurs in the course of the reaction. This is a new process for the preparation of hydroxyethyl cellulose, low cost, non-polluting, and high product purity, good uniformity.
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