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Patent No. 5307162

Cloaking System Using Optoelectronically Controlled Camouflage

A Cloaking System designed to operate in the visible light spectrum, utilizes optoelectronics and/or photonic components to conceal an object within it.

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Class 526/930 - WATER SWELLABLE OR HYDROPHILIC


Subclass of Class 526 - Synthetic resins or natural rubbers -- part of the class 520 series
Definition: Subject matter relating to water swellable or hydrophilic
No. of patents: 55
Last issue date: 10/30/2007


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NumberTitleIssue Date
7288601Method for production of water-absorbent resin and plow-shaped mixing device
A method for mixing a water-absorbent resin and a surface cross-linking agent-containing solution to repress aggregates is equipped. The water-absorbent resin and the surface cross-linking agent-containing solution is mixed with a plow-shaped mixing device which is ...
10/30/2007
7026373Polyamphoteric superabsorbent copolymers
A polyamphoteric superabsorbent copolymer made up of polymerizerable acid monomer and of polymerizable base monomer and optionally a supplemental monomer. In particular, the invention includes a radiation curable coating composition that comprises from about 20 weig...
04/11/2006
6784262Processes for chemically-modifying the surface of emulsion polymer particles
Processes for chemically-modifying the surface of an emulsion polymer particle are provided which include providing an aqueous emulsion polymer, a monomer at a level of at least 0.5% by weight based on the weight of the emulsion polymer and a, surface-modifying chem...
08/31/2004
6716894Water-absorbent resin powder and its production process and uses
The present invention provides: a water-absorbent resin powder, which includes no fine metallic foreign substance, and in which the deterioration is suppressed; its production process; and uses. The present invention production process for a water-absorbent resin po...
04/06/2004
6667372Continuous manufacturing method of water-absorbent polymer
A continuous manufacturing method of a water-absorbent polymer by continuously performing a polymerization of a hydrophilic monomer using a solution containing a hydrophilic monomer, includes at least one of the following steps (A) to (D): (A) introdu...
12/23/2003
6642334Beaded polyethylene glycol-based resins
Described herein is a pentaalkyldisiloxane containing polymeric surfactant prepared by the copolymerization of an alkoxypolyoxyalkylenyl acrylate and an acrylate containing a pentaalkyldisiloxane group. A method for preparing beaded polyethylene glycol-ba...
11/04/2003
6565981Polymers that are cross-linkable to form superabsorbent polymers
A composite of a substrate having an application of superabsorbent polymer. The composite is made by applying, directly onto the substrate, an application of a polymer that will, upon being subjected to radiation, convert to a superabsorbent polymer. The ...
05/20/2003
6297337Bioadhesive polymer compositions
Improved crosslinked ionic polymers or salts thereof having a soluble polymer fraction of less than about 15 wt %, and methods for making the same. The polymers are useful as bioadhesives, thickeners, emulsifiers, suspending aids, and pharmaceutical contr...
10/02/2001
6153288Ink-receptive compositions and coated products
Coatable ink-receptive compositions and coated substrates are provided. The compositions contain a pigment dispersed in a binder composed of an ethylene vinyl acetate emulsion polymer and at least one water soluble, cationic polymer, such as polydiallyldi...
11/28/2000
6087002Water absorbent resin
A process for producing water-absorbent resins having an average particle diameter of 100 to 600 μm and a particle diameter distribution of 0.35 or less by polymerizing an aqueous solution of a water-soluble ethylenically unsaturated monomer, pulverizing...
07/11/2000
6063488Hydrophilic acrylic copolymers, hydrophilic acrylic resin particles and ink-jet recording media
The acrylic copolymer and the acrylic resin particles of the invention have a recurring unit derived from a nitrogen-containing acrylic monomer having, in its molecule, at least one CH2 .dbd.CR1 --CO-- group (R1 is a hydro...
05/16/2000
6013698Encapsulated materials
Methods and compositions for encapsulated polymeric gels swollen with nonaqueous reactive materials are provided. The methods include gel synthesis, swelling of a gel precursor with a first nonaqueous reactive material, and encapsulation of the swollen ge...
01/11/2000
5789507Method for preparing water absorbent resin
A method for preparing water-absorbent resins (D) by radically polymerizing a water soluble monomer (A), or a water-soluble monomer (A) and a polysaccharide (B) in the presence of a crosslinking agent (C) and water, wherein the polymerization is conducted...
08/04/1998
5574121Process for preparing an absorbent resin crosslinked with a mixture of trimethylolpropane diacrylate and triacrylate
A process for preparing an absorbent resin includes the steps of: preparing a first crosslinking agent (A) including at least two polymerizable unsaturated bonds; preparing a second crosslinking agent (B) including at least two polymerizable unsaturated b...
11/12/1996
5559202Bowl-shape microparticle and production thereof
The present invention provides new non-spherical microparticles. The microparticles are a hemisphere or a half elliptic sphere having a big opening at the central portion, say bowl-shape microparticles, and a water uptake of from 80 to 140 ml/100 g, which...
09/24/1996
5250602Polymer emulsion and method for preparing the same
Disclosed are a polymer emulsion prepared by neutralizing a seed polymer with an acid or a salt or by quaternizing it with a quaternizing agent and a method of preparing the polymer emulsion. The surfaces of the emulsion grains are very densely cationated...
10/05/1993
5238681Insect bait station
An insect bait station comprising a first compartment with a hydrated macel containing at least one species of entomopathogen and a second compartment containing a hydrated water retentive compound layer which acts as a water-reservoir for the entomopath...
08/24/1993
5221722Crosslinked polyacrylic acid
Polycarbophil or crosslinked acrylic acid polymer is prepared in a solvent selected from acetone, alkyl acetates, and mixtures thereof, in the presence of an effective amount of divinyl glycol crosslinker, and in the presence of an effective amount of a s...
06/22/1993
5183879Polymer gel manufacturing methods
Disclosed are a polymer gel in which a phase transition occurs due to a stimulus, a method of manufacturing such a polymer gel, and an actuator which employs such a polymer gel. The polymer gel which is formed by polymerizing monomers at a temperature equ...
02/02/1993
5149750Preparation of finely divided, gel-like, water-swellable copolymers
Finely divided, gel-like, water-swellable copolymers are prepared by copolymerizing (a) 100 parts by weight of water-soluble, monoethylenically unsaturated monomers, (b) from 0.01 to 5 parts by weight of monomers containing two or more ethylenically unsat...
09/22/1992
5122544Process for producing improved superabsorbent polymer aggregates from fines
Improved water absorbent polymers can be prepared by agglomerating acrylic acid gel polymer fines with small quantities of difunctional epoxides....
06/16/1992
5109092Filaments and fibers of acryling polymers which contain carboxyl groups and process for their production
The invention relates to filaments and fibers of acrylonitrile polymers, which contain 10 to 30% by weight of carboxyl groups, their use and processes for their production. The filaments and fibers exhibit, in the dry state, tensile strengths of more than...
04/28/1992
4985514Method for production of water absorbent resin
The present invention is a method for the production of a water absorbent resin, which comprises preparing a monomer component possessing an ability to form a cross-linked structure and convert itself into a hydrated gel polymer during the course of aqueo...
01/15/1991
4970267Reconstitution of superabsorbent polymer fines using persulfate salts
A method for reconstituting superabsorbent polymer fines which comprises the following steps: wetting the superabsorbent polymer fines with an aqueous solution sufficient to form an amorphous gel of the fines, grinding the gel, and drying the ground gel p...
11/13/1990
4892533Ultrahigh water-absorbing fiber-forming composition
A copolymer of recurring units of at least one ଱,ଲ-unsaturated monomer and recurring units of at least one copolymerizable comonomer comprising, in its preferred embodiment from about 20 to about 80 percent pendant carboxylic acid units and fr...
01/09/1990
4892754Process for preparation of water absorptive composite material
There is provided a process for preparing a water absorptive composite material, which comprises the combination of the following steps: (A) applying an aqueous solution of polymerizable monomers comprising as a main component acrylic acid, of which 20% or mor...
01/09/1990
4835020Process for preparation of water absorptive composite material
Aqueous solution of alkali or ammonium acrylate is applied to a prefabricated fibrous substrate, and the acrylate is subjected to polymerization in two steps, namely the first step in which the acrylate is polymerized by means of a radical polymerization ...
05/30/1989
4777231Process to produce water absorbent polymers
A water-in-oil suspension polymerization process of the type comprising a process for preparing a water-insoluble polymer capable of absorbing water, aqueous salt solutions and blood, which utilizes as the suspending agent a cellulose ester or ether prote...
10/11/1988
4654039Hydrogel-forming polymer compositions for use in absorbent structures
The present invention relates to improved hydrogel-forming polymer compositions which can be used as absorbents in absorbent structures and absorbent articles such as diapers, sanitary napkins and the like. Such hydrogel-forming polymer compositions are s...
03/31/1987
4627850Osmotic capsule
An osmotic capsule is disclosed for delivering a beneficial agent formulation to an environment of use. The osmotic capsule comprises an outer semipermeable wall surrounding and laminating an inner capsule wall formed of a different polymeric composition ...
12/09/1986
4446261Process for preparation of high water-absorbent polymer beads
Water-insoluble, high water-absorbent polymer beads are prepared by dispersing and suspending an aqueous solution of a water-soluble, ethylenically unsaturated monomer containing a small amount of a crosslinking agent in a dispersion medium of a hydrocarb...
05/01/1984
4406660Non woven fabrics suitable for diaper and diaper coverstock
Non-woven fibrous products, such as diapers, in which the fibres are bound together by an emulsion copolymer of C4 C8 ester of acrylic and/or methacrylic acid: at least one of methyl methacrylate, styrene or ଱-methyl styrene an...
09/27/1983
4401795Polymeric polyelectrolytes
There is provided a polymer useful as a water absorbing agent. The polymer preferably contains the reaction product of an olefinically-unsaturated carboxylic acid, an alkyl acrylate and minor amounts of a crosslinking agent all in specified proportions....
08/30/1983
4361657Cross-linked hydrogel copolymers for contact lenses
The invention relates to soft contact lenses having a water content of at least about 45% and comprising a hydrated copolymer of a major proportion of an hydroxyalkyl acrylate or methacrylate, up to 12% by weight of an ethylenically unsaturated acid or an...
11/30/1982
4359564Addition polymer of oligomeric polyesters of acrylic acid
Disclosed are homopolymers and copolymers of a monomer or a mixture of monomers having the formula ##STR1## in which the average value of n (n) is in the range from greater than 1 to about 10, being oligomeric usually prepared from acrylic acid. In t...
11/16/1982
4351922Process for the production of highly water-absorbing but less water-soluble hydrogels
A highly water-absorbing but less water-soluble hydrogel is produced by polymerizing at least one hydrophilic ethylenically unsaturated monomer, e.g., ethylenically unsaturated carboxylic acid, ethylenically unsaturated sulfonic acid, or derivatives there...
09/28/1982
4342858Polymeric polyelectrolytes
There is provided a polymer useful as a water absorbing agent. The polymer preferably contains the reaction product of an olefinically-unsaturated carboxylic acid, an alkyl acrylate and minor amounts of a crosslinking agent all in specified proportions....
08/03/1982
4327202Styrene copolymer for contact lenses
A novel contact lens having improved gas permeability is disclosed which is formed from copolymerizing a mixture comprising: (a) a group 1 monomer which is a styrene or substituted styrene monomer, and (b) a group 2 monomer which is a monomer of the general fo...
04/27/1982
4310593Absorbent articles cured with amine-epihalohydrin adducts
Water absorbent articles, made from solutions of carboxylic polyelectrolytes, together with methods for their preparation, and a composition useful to make said articles are disclosed. The articles are cured and/or crosslinked with monomeric amine-epihalo...
01/12/1982
4267103Solvent polymerization of carboxyl containing monomers
Carboxyl or carboxyl salt containing polymers are prepared by polymerizing carboxyl containing monomers wherein greater than one percent of the carboxyl groups are neutralized with an alkali, ammonia or an amine, optionally copolymerized with other vinyli...
05/12/1981
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