Abstract in simplified Chinese:本发明系有关于一种涂布超吸收聚合物,包含具有延迟之游离水吸收特性之涂布超吸收聚合物,此聚合物于约15秒时间内,每克超吸收聚合体吸收少于约13克水。本发明针对具有延迟之游离水吸收特性之涂布超吸收聚合物,其包含a)一种组成物包含由浓度约55至99.9重量%含单体之可聚合未饱和酸群和浓度约0.001至约5.0重量%内部交联剂构成,其中组成物之中和度超过20%,与b)一种涂布于组成物上之盐类。
Abstract in simplified Chinese:本发明关于一种亲水超吸收性聚合物,包括(a)从约55至约99.99重量%的含可聚合性不饱和酸基之单体;(b)从约0.001至约5.0重量%的内部交联剂;(c)从约0.001至约5.0重量%的施用于粒子表面之表面交联剂;及(d)其中组成物具有超过约20%的中和度,且在约75℃或更低的温度,从约20莫耳%至约75莫耳%的含不饱和酸基之单体系被第一中和剂所中和,且从约5莫耳%至约40莫耳%的含不饱和酸基之单体系被第二中和剂所中和。该亲水超吸收性聚合物具有吸收时间为约5+10a^2分钟或更长,其中a系单位为毫米的超吸收性材料之平均粒子大小,容量为约15克/克或更大,滴下渗透值为约2秒或更少,及1/2浮动饱和度为约50%或更少。
Abstract:
The present invention relates to absorbent compositions which exhibit swelling, deswelling, and reswelling behavior. More specifically, absorbent compositions of this invention swell and absorb fluids after exposure to aqueous fluids, deswell and release fluids from the swollen absorbent compositions, and may also reswell and absorb fluids. The swelling-deswelling-reswelling behavior allows enhanced liquid distribution in absorbent composites.
Abstract:
A process for the preparation of superabsorbent polymer containing clay, the process including the steps of (I) polymerizing a polymerization mixture comprising: (a) one or more ethylenically unsaturated carboxyl-containing monomers, (b) one or more crosslinking agents, (c) optionally one or more comonomers copolymerizable with the carboxyl-containing monomer, (d) neutralizing agent to partially neutralize the polymer to from about 50% to about 99%, by weight, and (e) a polymerization medium, to form a crosslinked partially neutralized hydrogel, (II) admixing a clay with the crosslinked partially neutralized hydrogel to form partially neutralized superabsorbent polymer-clay hydrogel; (III) drying the crosslinked partially neutralized hydrogel at a temperature from about 190°C to about 210°C and for a time period of from about 15 minutes to about 120 minutes, and (IV) comminuting the dried partially neutralized superabsorbent polymer-clay hydrogel to particles.
Abstract:
Fire protection and/or fire fighting additives including a water-swellable polymer, a water immiscible phase, an emulsifier, an inverter, and a remainder water are disclosed. The water-swellable polymer is acrylamide-free and crosslinked and may be prepared by inverse phase polymerization. Such fire protection and/or fire fighting additives and fire protection and/or fire fighting compositions made using the additives exhibit exceptionally low corrosion properties. For example, when contacted with any one of a 2024-T3 aluminum alloy, 4130 steel, yellow brass, or AZ31B magnesium alloy, the corrosion rate is less than about 5 mils/yr for the fire protection and/or fire fighting additives.
Abstract:
A process of making the flexible superabsorbent binder polymer composition includes preparing a preneutralized monomer solution having at least about 40mol% degree of neutralization, preparing a monomer solution including monoethylenically unsaturated monomers, one of which includes an alkyloxysilane functionality, preparing initiator system solutions and adding the solutions to the monomer solution, mixing the foregoing solutions into a polymerization solution, cooling the polymerization solution, and post neutralizing the polymer.
Abstract:
The invention relates to absorptive, crosslinked polymers which are based on partly neutralized, monoethylenically unsaturated monomer carrying acid groups wherein the absorptive crosslinked polymer may be coated with a thermoplastic polymer, and have improved properties, in particular in respect of their capacity for transportation of liquids in the swollen state, and which has a high gel bed permeability and compatibility to affix to a thermoplastic material.
Abstract:
The invention relates to absorptive, crosslinked polymers which are based on partly neutralized, monoethylenically unsaturated monomer carrying acid groups wherein the absorptive crosslinked polymer may be coated with a thermoplastic polymer, and have improved properties, in particular in respect of their capacity for transportation of liquids in the swollen state, and which has a high gel bed permeability and compatibility to affix to a thermoplastic material.