 Novel catalyst for producing relatively narrow molecular weight distribution olefin polymers |
| OF THE INVENTION The present invention is most advantageously practiced in a polymerization ... |
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| Metal complex compounds |
| OF THE INVENTION The compounds of the present invention are prepared by combining: a) at least one ... |
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| Hot-melt adhesive |
| OF PREFERRED EMBODIMENTS In accordance with the present invention, by performing a random ... |
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| Preparation of addition polymerization catalysts via Lewis acid mitigated metal center oxidation |
| All reference to the Periodic Table of the Elements herein shall refer to the Periodic Table of ... |
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| Crosslinkable polyethylene-based composition for rotational molding |
| OF THE INVENTION As indicated above, the present invention relates to a novel crosslinkable ... |
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| Process for preparation of monocyclopentadienyl metal complex compounds and method of use |
| All reference to the Periodic Table of the Elements herein shall refer to the Periodic Table of ... |
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| Titanium(II) or zirconium(II) complexes and addition polymerization catalysts therefrom |
| According to the present invention there are provided metal complexes containing one and only one ... |
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| Method for preparing ethylene copolymer |
| What is claimed is: 1. A method for preparing an ethylene copolymer which comprises the step of ... |
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| Ethylene-aromatic vinyl compound copolymer and method for its production |
| It is an object of the present invention to provide an ethylene-aromatic vinyl compound copolymer ... |
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| Polyvinylidene fluoride weather resistant coating compositions including polymethyl methacrylate |
| OF THE PREFERRED EMODIMENT In the following description, the invention is described in terms of a ... |
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Alatex compound for dip molding and a dip-molded product
| Details |
Inventors: Kajiwara, Yuichiro; Tsuji, Masaaki; Suzuki, Shigeo; Suetsugu, Takashi; Ban, Hiroshi;
Assignee: Takeda Chemical Industries, Ltd. (Osaka, JP)
Primary Examiner: Wu; David W.
Assistant Examiner: Egwim; Kelechi C.
Attorney, Agent or Firm: Wenderoth, Lind & Ponack, L.L.P.
A latex compound for dip molding, which can be used for production of a high-quality dip-molded product that is excellent in oil resistance and mechanical strength, has uniform film thickness and soft feeling to the skin and is free of pinholes, as is required for gloves etc. especially in the medical fields, and assumes no stickiness on the surface of the molded product after molding. This object is attained by a latex compound for dip molding which comprises a copolymer latex (L) obtained by emulsion polymerization of a monomer mixture and 0.05 to 5.0 parts by weight of a bubble breaker (A) consisting of a C.sub.8-22 fatty acid or a salt thereof, and if necessary, 0.1 to 5.0 parts by weight of a di C.sub.5-12 alkyl sulfosuccinate salt (B) and/or 0.5 to 10.0 parts by weight of a C.sub.13-20 alkyl benzene sulfonate (C) per 100 parts by weight of the monomer mixture. |
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DETAILED DESCRIPTION OF THE INVENTION The process for producing a latex component for dip molding according to the present invention is described below.
In the present invention, the bubble breaker (A) and, if necessary, the component (B) and/or the component (C) are blended with the copolymer latex (L) obtained by emulsion polymerization of a monomer mixture.
The copolymer latex (L) used in the present invention is obtained by emulsion polymerization of a monomer mixture, and the monomer is not particularly limited insofar as the resulting polymer has rubber-like properties.
Preferably the monomer mixture comprises a vinyl cyanide monomer, a conjugated diene monomer and an ethylenically unsaturated carboxylic acid monomer and if necessary an ethylenically unsaturated monomer copolymerizable with these monomers.
The vinyl cyanide monomer includes acrylonitrile, methacrylonitrile, .
alpha.
-cyanoethylacrylonitrile, fumaronitrile etc.
These vinyl cyanide monomers can be used singly or in combination thereof.
In the present invention, acrylonitrile is particularly preferably used.
The amount of such a vinyl cyanide monomer used is 15 to 45 parts by weight, preferably 23 to 40 parts by weight, in 100 parts by weight of the monomer mixture.
If the amount of the vinyl cyanide monomer is less than 15 parts by weight, the oil resistance and chemical resistance of the resulting dip-molded product may be inadequate, whereas if it exceeds 45 parts by weight, the copolymerization reaction between the vinyl cyanide monomer and the conjugated diene monomer hardly proceeds so that a homopolymer of the vinyl cyanide monomer may be formed.
The conjugated diene monomer used may be a monomer usually used for production of latex, such as 1,3-butadiene, isoprene, 2-chloro-1,3-butadiene and 2-methyl-1,3-butadiene.
These conjugated diene monomers can be used alone or in combination thereof.
In the present invention, 1,3-butadiene is preferably used.
The amount of such a conjugated diene monomer used is in the range of 35 to 80 parts by weight, preferably 45 to 70 parts by weight, in 100 parts by weight of the monomer mixture
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Adhesives and Rubbers 
