摘要:
[0041] Embodiments of the present disclosure relate generally to cooling fabrics having an array of cooling elements coupled to a base fabric, and in particular to methods and fabrics that utilize an array of cooling elements coupled to a base material to absorb heat while also maintaining desired properties of the base material. In some embodiments, the cooling elements may include a cooling gel or polymer or a phase change material, and the cooling elements may undergo a chemical or physical change when exposed to moisture, thereby absorbing heat.
摘要:
The present invention relates to a material for acquisition of liquids comprising individualized, crosslinked cellulosic fibers having an effective amount of a polymeric acid crosslinking agent (such as polyacrylic acid polymers) reacted with the fibers in intra-fiber crosslink ester bond form. The material further comprises at least one basic substance, selected from basic polymers (such as polyallylamine (PAAM) or crosslinked quaternary ammonium hydroxide divinylbenzene/styrene copolymer/Amberlyst A-26 OH). The invention also relates to disposable absorbent articles, such as diapers, containing this material. The material can be used in a method of reducing the electrolyte concentration of aqueous mediums containing electrolytes, such as urine.
摘要:
A description is given of a new combustion retardant for polymer materials, consisting of methyl(oxyalkyl)phosphono-oxyethylene methacrylate of the formula
CH 2 =C(R)-C(O)[0CH 2 CH 2 OP(O)(R)(OR 1 )]
where R - CH 3 ; R 1 - CH 3 , C 2 H 5 , C 3 H 7 , C 4 H 9 . The combustion retardant can be used primarily as a comonomer in the process of copolymerisation with methyl methacrylate, and also to impart fireproofing properties to chemical fibres. In the latter case, the method of inoculation polymerisation is used.
摘要:
A fiber capable of forming a metal chelate and a process for producing the same are disclosed, wherein the fiber is characterized in that at least one metal chelate-forming compound selected from the group consisting of aminodicarboxylic acids, aminocarboxylic acids, thiocarboxylic acids and phosphoric acid, which are reactive with a glycidyl group, is bonded to a molecule of a natural fiber or regenerated fiber through a crosslinkable compound having a reactive double bond and a glycidyl group in its molecule. There are also disclosed a method of capturing metal ions using the fiber and a metal chelate fiber which can effectively make use of the characteristics of the metals and can be easily discarded or incinerated.
摘要:
Cellulose or acrylonitrile fiber having methacrylic acid or hydroxyalkyl methacrylate graft-copolymerized in an amount of 3-60 % by weight is disclosed. The graft fiber is produced by reacting methacrylic acid or a hydroxyalkyl methacrylate with cellulose or acrylonitrile fiber in an aqueous medium containing hydrogen peroxide and a ferrous salt.
摘要:
A process for preparing a water absorptive composite consisting of a highly water absorptive polymer and a prefabricated fibrous substrate, which comprises applying an aqueous solution containing (a) a polymerizable monomer comprising as a main component acrylic acid, of which 20% or more of the carboxyl groups have been neutralized to its alkali metal salt or ammonium salt, (b) 2-vinylpyridine or(and) 4-vinylpyridine or(and) their salts, (c) a crosslinking agent and (d) an oxidative radical polymerization initiator to a prefabricated fibrous substrate, and then carrying out polymerization with addition of a reducing agent.
摘要:
Process for the preparation of hydrocarbyl chain-grafted cellulose fibres by contacting cellulose fibres wherein 0.25 - 33.3 % of the hydroxyl groups have been converted into the corresponding alkali metal oxy groups at 20 - 150 °C with an organic compound comprising a hydrocarbyl chain having a molecular weight of at least 150 and which chain carries an electrophylic functional group.