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Class 522/159 - Polyisoprene or natural rubber


Subclass of Class 522 - Synthetic resins or natural rubbers -- part of the class 520 series
Definition: Subject matter wherein the solid polymer is derived solely from isoprene or
No. of patents: 44
Last issue date: 02/12/2008


1    
NumberTitleIssue Date
7329693Adhesive composition and method for bonding to rubber
An adhesive composition of the present invention comprises (A) a conjugated diene polymer having a weight-average molecular weight of 500 to 100,000 and (B) an electron pair-donating basic compound; or comprises (A) a conjugated diene polymer having a weight-average...
02/12/2008
7294673Method of modifying polymeric material and use thereof
A method of modifying a polymeric material whereby the polymeric material is modified to give a highly durable surface without decreasing its strength. Namely, a polymeric material is modified by the method comprising a combination of an impregnation step, an activa...
11/13/2007
7232595Device comprising low outgassing photo or electron beam cured rubbery polymer material
Disclosed are photo or electron beam curable polymerizable compositions, and preparation thereof and devices containing such cured material. The composition contains completely or substantially completely hydrogenated hydrocarbon-based material completely free or su...
06/19/2007
7214724Method for cross-linking a foamable plastic
A plastic is converted from an initial condition with a higher density into a foamed condition with a lower density using a blowing agent, wherein the plastic is cross-linked prior to foaming by means of a first cross-linking agent and during the foaming by means of...
05/08/2007
7204947Method of crosslinking polyolefins
A method of forming an engineering component comprising the steps of: subjecting a workpiece or blank formed from polyolefin to gamma radiation at a total dose sufficient to cause a predetermined degree of crosslinking, wherein the...
04/17/2007
7163968UV curable pressure sensitive adhesives
UV curable adhesives are provided that comprise epoxidized monohydroxylated polydiene polymers, hydrogenated hydroxylated polydiene polymers, and selectively hydrogenated starblock copolymers. The adhesive formulations provide both excellent room temperature propert...
01/16/2007
7087660Preparation of components and articles with directed high frequency energy heated silica-rich rubber components containing high softening point polymer and sulfur curative
This invention relates to a process of preparation of components and articles of manufacture containing at least one of such components, such as tires, and the resulting prepared components and fabricated articles, by use of directed high frequency energy internally...
08/08/2006
7030171Process for producing vinyl polymer having functional group at end and vinyl polymer having functional group at end
The objective of the present invention is to provide a production method by which a polymer of a functional group-terminated vinyl monomer can be easily and practically produced. Further, it is another object of the present invention to provide a functional g...
04/18/2006
6903144Non-aqueous solvent-free process for making UV curable adhesive and sealants from expodized monohydroxylated diene polymers
This invention is a process for making UV curable adhesives, sealants, coatings, ink, flexible printing plates, laminating adhesives, fibers, gaskets, and related compositions, films, and thin parts, wherein an epoxidized monohydroxylated polydiene polymer comprised...
06/07/2005
6869981Optical fiber coatings with pressure sensitive adhesive characteristics
The invention includes an optical fiber coating that exhibits the characteristics of a pressure sensitive adhesive. A viscoelastic window for the coating will include at least one set of coordinates that is within Quadrants 2, 3, or 4 or the Transition Flow Region o...
03/22/2005
6822015Rubber composition used for a rubber stopper for a medicament or for a medical treatment or its crosslinked product
The object of the invention is to provide a rubber composition or its crosslinked product used for a rubber stopper for a medicament or a rubber article for a medical treatment, suitable for radiation treatments to be carried out for the purpose of sterilizing. ...
11/23/2004
6803014Method of making elastic articles having improved heat-resistance
The present invention relates to a method for making a heat-resistant elastic article and a heat-resistant elastic article. The invention especially relates to a method of making elastic fibers and polymeric elastic fibers wherein the elastic fibers are capable of w...
10/12/2004
6693142Process for producing vinyl polymer having functional group at end and vinyl polymer having functional group at end
The objective of the present invention is to provide a production method by which a polymer of a functional group-terminated vinyl monomer can be easily and practically produced. Further, it is another object of the present invention to provide a function...
02/17/2004
6627673Methods of making humidity activated materials having shape-memory
The present invention relates to shape deformable materials, which are capable of (1) being deformed, (2) storing an amount of shape deformation, and (3) recovering at least a portion of the shape deformation when exposed to a humid environment. The shape...
09/30/2003
6517910Free radical polymerization method
In one aspect the invention provides an energy efficient polymerization method comprising irradiating a polymerizable composition and a photoinitiator with a source of essentially monochromatic radiation where the photoinitiator and the wavelength of the ...
02/11/2003
6437014Method of making elastic articles having improved heat-resistance
The present invention relates to a method for making a heat-resistant elastic article and a heat-resistant elastic article. The invention especially relates to a method of making elastic fibers and polymeric elastic fibers wherein the elastic fibers are c...
08/20/2002
6423760Fully vulcanized powdery rubber having a controllable particle size, preparation and use thereof
The present invention provides a fully vulcanized powdery rubber having a particle size of from 20 to 2000 nm, its preparation and use. The vulcanized powdery rubber is obtained by irradiating a rubber latex having a particle size of from 20 to 2000 nm wi...
07/23/2002
6407144Combination biological and microwave treatments of used rubber products
A process and resulting product is provided in which a vulcanized solid particulate, such as vulcanized crumb rubber, has select chemical bonds altered by biotreatment with thermophillic microorganisms selected from natural isolates from hot sulfur spring...
06/18/2002
6399671Rubber polymers having an elevated gel content and an elevated degree of swelling
This invention relates to rubber polymers based on polymerizable monomers and having an elevated gel content together with an elevated degree of swelling, to the production of the stated rubber polymers and to the use thereof for the production of molding...
06/04/2002
6339112Radiation curable compositions comprising metallocene polyolefins
The present invention relates to radiation curable compositions comprising at least one metallocene polyolefin. The radiation curable compositions are useful for a variety of applications, particularly as coatings and adhesives. The radiation curable comp...
01/15/2002
6329444Dip-molded medical devices from cis-1,4-polyisoprene
Medical devices of synthetic rubber are prepared from cis-1,4-polyisoprene by dip molding without the use of sulfur containing components. The devices have surprisingly favorable tensile characteristics despite what is known in regard to synthetic cis-1,4...
12/11/2001
6160031Process for decomposing a polymer to its monomer or monomers
A process for decomposing a polymer which is capable of undergoing thermal depolymerization to its monomer or monomers, such as for example poly(methylmethacrylate), and for the recovery of at least one of the monomers, includes the steps of subjecting th...
12/12/2000
6042643Reaction of carbon black with diazonium salts, resultant carbon black products and their uses
Processes for preparing a carbon black product having an organic group attached to the carbon black. In one process at least one diazonium salt reacts with a carbon black in the absence of an externally applied electric current sufficient to reduce the di...
03/28/2000
5916929Method for irradiating organic polymers
A method for irradiating and modifying high molecular weight organic polymers with high energy radiation so that the radiation impinges only in a distinct pattern which is less than the width of the polymer so as to cause controlled chain scission and con...
06/29/1999
5834530Plate-shaped rubber member consisting of a pre-crosslinked rubber mixture
A plate-shaped rubber member consists of at least one rubber mixture. The rubber member has a surface with markings and includes a pre-crosslinked layer directly below the surface at least in the area of the markings. The pre-crosslinked layer is generate...
11/10/1998
5686505Process and apparatus for surface treatment of unvulcanized rubber sheet
Only an outer surface of an unvulcanized rubber sheet is preliminarily crosslinked by irradiating an infrared ray or a far infrared ray to the unvulcanized rubber sheet prior to subsequent final vulcanization, whereby the occurrence of rubber spew and rub...
11/11/1997
5652281Graft copolymers of polyolefins and a method of producing same
Disclosed are graft copolymers of polyolefins and a method of preparing the graft copolymers. The method includes irradiating a mass of olefin polymer particles and thereafter treating the mass of particles with a vinyl monomer in liquid form. A nonoxidiz...
07/29/1997
5641823Solvent-free laminating adhesive composition
A laminating adhesive comprising an adhesive composition which comprises (a) An epoxidized block copolymer of the formula (A--B--Ap)n --Yr --(Aq --B)m wherein Y is a coupling agent or coupling monomers, and wherein ...
06/24/1997
5523383Photocurable resin composition for the preparation of a printed wiring board and process for the preparation of photocurable resin
A process for the preparation of a photocurable resin which comprises the steps of (I) (a) imidating 20 to 80 mole % of the acid arthydride groups present in an adduct prepared by the addition reaction of an ଱,ଲ-unsaturated dicarboxylic acid a...
06/04/1996
5407971Radiation crosslinked elastomers
Disclosed are radiation-crosslinkable elastomeric compositions containing: (a) an elastomeric polymer containing abstractable hydrogen atoms in an amount sufficient to enable the elastomeric polymer to undergo crosslinking in the presence of a suitable radiati...
04/18/1995
5213723Process for producing rubber products
A process for producing a rubber product by vulcanizing a molded article composed of a rubber composition containing a peroxide as a crosslinking agent in the presence of oxygen, wherein said molded article is irradiated with electron beams, is disclosed....
05/25/1993
4910261Thermoplastic elastomers having isobutylene block and cyclized diene blocks
A polymerization process for preparing triblock copolymers and multiblock copolymers. The process includes the polymerization of isobutylene below about -40° C. in a reaction mixture which includes a titanium halide, a mixed solvent, and an initiator com...
03/20/1990
4808510Photographic element and patternable mordant composition
A photographically negative-working patternable mordant composition is disclosed containing a photocrosslinkable polymer comprised of, for providing both mordanting and crosslinking sites, repeating units of the formula: ##STR1## wherein Ar is a...
02/28/1989
4628073Soft, rubbery, multiphase matrix material and methods for its production
Provided is a method for producing and a soft-rubbery matrix material composed of 0.3-70 micron particles of a 50,000-300,000 molecular weight cross-linkable polymer dispersed in a fluxable elastomer where the polymer's softening point temperature exceeds...
12/09/1986
4618566Fluorene containing compounds and negative photoresist compositions therefrom
Polymers of fluorene containing compounds which form crosslinked networks are found to provide useful negative photoresists which are sensitive in the ultraviolet wavelength range of between about 200 nm to 300 nm. When used in negative photoresist compos...
10/21/1986
4442199Pattern formation with negative type resist
A pattern formation with a negative type resist comprises forming a thin film made of a resist on a board and irradiating light or radiation; developing and etching the product. The resist is a diene polymer obtained by a living polymerization in the pres...
04/10/1984
4407927Photoresist composition
By adding a compound represented by the following general formulas: ##STR1## to a conventional photoresist composition comprising a cyclized product of conjugated diene homopolymer or copolymer and a photo-crosslinking agent soluble in an organic sol...
10/04/1983
4391949Asymmetric block copolymers and corresponding adhesive formulations
A novel block copolymer having particular utility in adhesive compositions has the structure (A--B)x Y--C)z where A is a poly(monoalkenyl) block, B and C are poly(conjugated diene) polymer blocks, Y is the residue of a multifunctiona...
07/05/1983
4352765Method for producing rubber articles by subjecting powdered caoutchou composition to intensive mixing and high-speed electrons
Production of rubber articles by intensively mixing powdered caoutchouc and additives without vulcanizing accelerators to produce a homogenized caoutchouc mixture. The mixture is formed into semi-finished products which are irradiated with high-speed elec...
10/05/1982
4349619Photoresist composition
By adding a compound represented by the following general formulas: ##STR1## to a conventional photoresist composition comprising a cyclized product of conjugated diene polymer or copolymer and a photo-crosslinking agent soluble in an organic solvent...
09/14/1982
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