Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Processes of preparing a desired or intentional composition...
Patent
1997-06-02
1999-09-28
Yoon, Tae
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Processes of preparing a desired or intentional composition...
523200, 523211, 526227, 526230, 525936, 428407, C08K 910, C08F 432, C09J13300
Patent
active
059590025
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
1. Field of The Invention
The present invention relates to a coated granular curing agent and an anchor bolt-fixing composition comprising the same. More particularly, the present invention is concerned with a coated granular curing agent, which is for use in curing a radically curable compound (hereinafter, frequently referred to as a "first radically curable compound") selected from the group consisting of a radically curable resin and a radically polymerizable monomer and which comprises an organic peroxide granule, wherein the organic peroxide granule has an entire surface thereof coated with a layer of a cured resin derived from another radically curable compound (hereinafter, frequently referred to as a "second radically curable compound") which is the same as or different from the above-mentioned first radically curable compound. The present invention is also concerned with an anchor bolt-fixing composition comprising (1) a curable composition comprising at least one radically curable compound selected from the group consisting of a radically curable resin and a radically polymerizable monomer, and a cure accelerator; and (2) a plurality of granules of the above-mentioned coated granular curing agent. The coated granular curing agent of the present invention is advantageous not only in that the curing agent can be handled with ease, but also in that the curing agent can be uniformly dispersed in a radically curable compound, so that it exhibits excellent curing performance. Therefore, the coated granular curing agent of the present invention can be advantageously used as a curing agent for a radically curable resin and/or a radically polymerizable monomer, which is used in various fields, such as a water-transmitting resin mortar and a casting resin. Especially, the curing agent of the present invention can be advantageously used to provide an excellent anchor bolt-fixing composition which not only has a long life, but also is capable of fixing an anchor bolt to a base while enjoying high fixation strength.
2. Prior Art
Conventionally, as a curing agent for a radically curable resin, such as an unsaturated polyester resin, an epoxy acrylate resin or a polyester acrylate resin, various organic peroxides have been used. These organic peroxides are appropriately selected depending on various factors, such as the type of resin to be cured and the ambient temperature at the time of performing curing of the resin. When it is attempted to cure a resin at room temperature or below, the organic peroxide is frequently used in combination with a cure accelerator, such as an aromatic amine.
Radically curable resins, which can be cured using an organic peroxide as a curing agent, have been used in various fields. For example, radically curable resins are used as a resin for providing a corrosion-preventing lining, as a resin for producing a molded article by use of a metal mold and as a resin for use as a main agent for an anchor capsule. (The term "anchor capsule" used herein means a capsule used to fix an anchor bolt or an iron rod to a base, each of which is used in fixing a machine or other structures to bases, such as a rock bed, concrete and masonry.) As a resin to be used as the main agent for an anchor capsule, a radically curable resin, such as an unsaturated polyester resin or an epoxy acrylate resin, is generally used.
Conventionally, the anchor capsule comprises a curable resin in a viscous liquid form, a curing agent, and, optionally, an aggregate. The operation of fixing an anchor bolt or an iron rod to a base using such an anchor capsule is generally conducted by a method comprising inserting an anchor capsule into a hole drilled in a base, and driving an anchor bolt or an iron rod into the hole, thereby breaking the anchor capsule in the hole so as to allow the curing agent to be mixed with the curable resin in a viscous liquid form, so that the resin can be cured. Specific examples of methods for breaking an anchor capsule in a hole by means of an anchor bolt or an i
REFERENCES:
patent: 2969330 (1961-01-01), Brynko
patent: 3814156 (1974-06-01), Bachmann et al.
patent: 3925996 (1975-12-01), Wiggill
patent: 4216180 (1980-08-01), Seemann et al.
patent: 4387044 (1983-06-01), Sanchez et al.
patent: 4898899 (1990-02-01), Isobe
patent: 5409764 (1995-04-01), Otsuki et al.
patent: 5551805 (1996-09-01), Arnold et al.
patent: 5589523 (1996-12-01), Sawaoka et al.
Kuramochi Hidenori
Takeda Nobuhiro
Asahi Kasei Kogyo Kabushiki Kaisha
Yoon Tae
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