Rubber products and cure system The present invention provides a novel mixture, which comprises a dihydrocarbyl xanthogen polysulphide and a xanthate selected from metal hydrocarbylxanthates and dihydrocarbylxanthates. ...
2
86100216
Gutta-percha extraction from eucommia leaves or barks
This invention is charaterized by its new process. First, ferment or digest the eucommia leaves or barks so as to destroy their cell walls, then crush the cell tissues with high-speed hy...
Modified halogen butyl rubber and processing
The content of conjugated diene in the polymer is lower than 0.25% mole and the halogen is at least lower than 0.6% by weight. At leasl 20% mole of the halogen is presented as primary al...
5
86108612
Removal of organic halides from hydrocarbon solvents Halogenated hydrocarbons are removed from hydrocarbon solvents for reuse in a butyl rubber process by contacting the halide containing hydrocarbon solvent with alumina at a temperature of...
6
86106292
Method for treatment of natural rubber field latex A method for the treatment of fresh natural rubber field latex comprises incubating the field latex with a proteolytic enzyme at a pH suitable for the enzyme. The amount of enzyme present...
7
86102824
Method and equipment for drying standard gum
A method of standard gum processing is as follows: the crushed gum particles from feeder apparatus are well-distributed in a given thickness of gum layer on a continuously running drying...
8
87104720
Type of natural latex coagulator
This invention provides a new type of natural latex coagulator for preliminary working of natural rubbers. It contains sulfuric acid, ethanol 2,3-dihydroxybuthldiacid and water. The new ...
Regeneration of waste vulcanized rubber
The regeneration of waste vulcanized rubber belongs to the recovery process of waste rubbers. Among them, the waste synthetic vulcanized rubber is more difficult to regenerate, and the w...
11
88103978
High-elastic rubber products gutta percha
This invention provides a process using gutta percha as raw material and a special prescription system to prepare high-elastic soft rubber, which can also be blended with other rubbers f...
12
88100708
Drying equipment for sticky material
The drying equipment for sticky material includes a drying tower in which embossed plates are fixed, a condenser, and a vacuum pump. It can desiccate the fed emulsion with a moisture con...
Method for preparing modified waste rubber powder
This invention uses ethylene amine kind of materials as modifier. The effect of modifying waste rubber powder at normal temp. is obvious, so it greatly simplifies technological routine, ...
Comprehensive extraction of gutta-percha
The present invention refers to a method for the extraction of gutta-percha. It is an improvement of existing extraction method, i.e. retaining fermentation and steam-boiling and elimina...
17
93112055
Human-body infrared sensing automatic water tap
The manual infra-red sensing automatic faucet makes use of the infra-red ray sent out by human body to control directly the "on" or "off" state of the faucet. It mainly consises of a iso...
Deproteinized natural rubber and method for producing the same A deproteinized natural rubber substantially free from any protein and a process for producing the same which comprises treating a latex with a protease and a specific surfactant or a com...
21
93108238
Cyclized cis-1,4-butylaml random copolymer
The cyclized cis-1,4 butadiene-isopentadiene random copolymer is prepared by cyclizing modification reaction of conjugated dialkene copolymer. Rare-earth catalyst is used to synthesize t...
22
94106007
Process for producing raw rubber A process for producing raw rubber from a deproteinized natural rubber is disclosed, which comprises coagulating rubber particles in the deproteinized natural rubber latex by: (1) adding ...
Rubber synthesized brake-block and the mfg. method
The composition of rubber synthetic brake shoe is as follows (wt.%): 55.22% rubber, 19.08% graphite, 11.04% iron powder, 7.03% sulfur, 3.61% braium sulfate, 1.00% zinc oxide, 2.01% alumi...
26
94114225
Concentrating method for styrene butadiene rubber latex
The concentrating method adopts the technological process of pressure reducing circulation flash. The flashing device is a metallic circular cylinder, with smooth internal surface. On th...
27
94106006
Means for stabilizing deproteinized natural rubber latex A means for stabilizing a deproteinized natural rubber latex is disclosed, comprising adding a stabilizer selected from the group consisting of (a) an anionic surfactant, (b) an amphoteri...
Rubber compsn. comprising a polymeric amine Co-activator Vulcanizable rubber compositions are disclosed which contain co-activator of vulcanization which is a polymeric amine, that is, a hydrocarbon polymer with pendent alkyl amine groups. The ...
Monohydroxylated diene polymers and epoxidized derivs. thereof The invention relates to monohydroxylated polydiene polymers which comprises at least two polymerisable ethenically unsaturated hydrocarbon monomers wherein at least one is a diene monome...
32
95195566
Curable binders for pressure sensitive adhesives and sealants A curable binder for pressure sensitive adhesives and sealants which comprises from 20 to 95 % by weight of an epoxidized polydiene polymer and from 5 to 80 % by weight of a monohydroxyla...
33
95106561
Agglomerating agent latex with bound poly(ethylene oxide) A process that is provided for agglomerating rubber particles of a rubbery latex. The process involves producing an agglomerating agent which is in the form of latex having particles whic...
34
95196509
Process for coagulation finishing of polymers A process for coagulation finishing (co)polymer by using polyvinyl alcohol as dispersant. In particular low viscosity block copolymers, comprising at least one block of predominantly conj...
Hydrogenation of diene copolymers A process is provided for the hydrogenation of carbon-carbon double bonds in polymers by treatment of the polymer in solution with hydrogen in the presence of osmium-based catalysts.
39
96194734
Concurrent epoxidation and catalyst residue extraction A process for the concurrent epoxidation of, and catalyst residue extraction from, anionically polymerized diene-containing polymers which have been hydrogenated using a Group VIII metal ...
Modified polyalkadiene-containing compositions A composition that includes an olefinic-terminated polyalkadiene that includes carboxy ester linking groups and at least one nascent secondary hydroxyl group that is capped with a monoiso...
42
97192369
Process for producing dip-coated articles A process for producing dip-coated articles in which a heated moulding with an electrolyte adsorbing surface is dipped into an aqueous latex preparation, the latex of which is stabilised ...
43
97195156
Novel elastomer composites, method and apparatus Elastomer composites are produced by novel continuous flow methods and apparatus in which fluid streams of particulate filler and elastomer latex are fed to the mixing zone of a coagulum ...
Composite material with function of far infrared radiation
The present invention relates to a composite material with far infrared radiation function formed from plastics, rubber, chemical fibre and their composite material as base material and ...
Method of continuously dissolving rubber A method of dissolving a rubber continuously to form a raw material for the production of rubber-modified polymer, by dissolving a rubber in a monomer liquid dissolving the rubber and cap...
51
98802591
Modified polyolefins The present invention relates to a modified polyolefin comprising a polyolefin and 0.01 to 20 parts by weight of a mono-telechelic polyolefin per 100 parts by weight of the polyolefin. Pr...
52
97181142
Process for making stabilized non-coloured rubber A process for the recovery of an initially living polymer from a cement produced in a polymerization process. The living polymer cement is shortstopped, washed, stabilised, coagulated and...
53
98120866
Method for raising vulcanizing speed of rubber composition A method is disclosed for increasing the rate of vulcanization of a rubber composition comprising adding to a sulfur vulcanizable rubber a methyl trialkyl ammonium salt of the following f...
54
98811684
Elastomer composite blends and method for producing them Elastomer composite blends are produced by novel wet/dry mixing methods and apparatus. In the wet mixing step or stage, fluid streams of particulate filler and elastomer latex are fed to ...
55
98801424
Functionalized polymers The invention discloses a process for functionalizing polymers prepared by carbocationic polymerization wherein a living carbocationic polymerization system is reacted with one or more ar...
Biological solidification technology of natural latex
During the solidification, protease is utilized to decompose the protecting layer protein of latex granule and to promote the gelatification of lalex granule owing to the destruction of ...
58
98120693
Gettama callus inducing and gettma gum extracting method
The present invention aims at reducing the production cost of gettama gum and raising the yield. The leaf and stem segment of gettama seedling are inoculated in solid MS or B5 culture me...
59
99807370
Separations using ampholytic basic polymers The invention relates to processes for separating acids from other compounds in solution utilizing ampholytic base polymers in chromatographic-type separations. Preferred processes are co...
60
98814229
Process for hydrogenating a conjugated diene polymer This invention relates to a process for selectively hydrogenating the unsaturated double bonds of conjugated diene units of a homopolymer or copolymer. By using a highly active novel homo...
61
98812433
Process for hydrogenation of macromolecular organic substrates A process for the hydrogenation of a macromolecular organic substrate which process comprises contacting the organic substrate at elevated temperature and at elevated pressure with a cata...
62
99111110
Improved natural latex coagulant
The improved natural latex coagulant for initial processing of natural rubber contains sulfuric acid, water, ethanol, glycol and N-benzyl-beta-naphthylamine (antiager D). Compared with a...
Rubber powder and its preparation method The present invention relates the pulverulent rubbers, finely divided, which contains filler which contain further processing and vulcanization auxiliaries necessary for the production of...
Treatmen of vulcanized rubber According to the present invention there is provided a method for the treatment of vulcanized rubber comprising the steps of: providing a solution of sulfur in a fatty acid or ester or a ...
67
99118693
Process for preparing protein-removed natural rubber
A process for preparing the protein-removed natural rubber uses the natural rubber milk as raw material and includes such steps as adding protease and surfactant, decomposing protein in ...
Process for preparing active fine rubber powder
A process for preparing active fine rubber powder includes cutting rubber, washing, pulverizing at 85-180 deg.C by single-roller or multi-roller grinding head at rotation speed of 700-11...
71
00817095
Process for producing enlarged latex A process for producing a particle-enlarged latex, characterized by (1) causing (a) an anionic surfactant and (b) at least one surfactant selected from the group consisting of cationic su...
72
00816283
Process for hydrogenating unsaturated polymers A hydrogenation catalyst and a process for hydrogenating an unsaturated polymer comprising contacting the unsaturated polymer with a hydrogenating agent in the presence of a mixed hydroge...
73
00814091
High refractive index thermoplastic polyphosphonates High refractive index, melt processable polyphosphonates and methods for preparing the same are provided. These poylmers are particularly useful for optical and ophthalmic parts, such as ...
74
01806373
Method for agglmerating finely divided polybutadiene latices The invention relates to a method for agglomerating finely divided rubber latices by adding an aqueous solution of a water-soluble amphiphilic copolymer that consists of at least one hydr...
Process for preparing concentrated natural low-protein latex
A process for preparing concentrated natural low-protein latex includes such steps as adding ammonium laurate to fresh latex for stabilizing it, adding alkaline proteinase, stirring for ...
Natural rubber producing method with lactic acid circulation
The present invention discloses a kind of natural rubber producing process, in which whey separated from solidification of natural rubber is made to react with sugar to produce lactic ac...
82
01810471
Hydrogenation process This invention relates to an improved resin hydrotreating process that maintains resin softening point and aromaticity as well as catalyst lifetime. The process is particularly useful for...
Method for agglomerating dispersed rubber The invention relates to a method for agglomerizing at least one dispersed rubber (A) in an aqueous phase by adding a dispersion of at least one agglomeration polymer (B) in the aqueous p...
Maleated liquid C5 hydrocarbon resins Acid modified C5 hydrocarbon resins are disclosed. The resins are predominantly piperylene resins with isobutylene. The resins are acid modified with from about 0.1 to 30 weight percent m...
87
01815225
Method of removing protein from dipped latex rubber goods
A method of removing protein from dipped latex rubber goods comprises: a) removing any corn starch powder which has previously been applied to the goods, by treating the goods with hot w...
Improved process for hydrogenating unsaturated polymers The present invention is a continuous process for hydrogenating an unsaturated polymer comprising: contacting the unsaturated polymer with a hydrogenating agent in a fixed bed reactor, wh...
Production process and product of composite vulcanizing agent
The present invention relates to a production process of compound vulcanizing agent and its product. It is mainly characterized by that heating and dissolving stearic acid, adding accele...
Sulfoxider or sulfones gralted onto polymers
Polymers grafted with a compount of formula (I), wherein the general symbols are as defined in claim 1, have outstanding stability against oxidative, thermal, dynamic, light-induced and/...
Modified rubber, process for producing the same and composition The invention relates to: a modified rubber having a specific structure modified with a compound having two or more epoxy groups in the molecule; and a process for producing a modified ru...
98
01820973
Method for treating emulsion polymers
The invention relates to a method for treating polymer components produced by emulsion polymerisation. The inventive method is characterised in that coagulation of the aqueous polymer la...
Method for hydrogenation of polymers in dispersed medium The invention concerns a method for hydrogenation of unsaturated polymers in dispersed medium based on an oxidation-reduction system containing hydrazine, an oxidant such as a peroxide an...
