Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Polymers from only ethylenic monomers or processes of...
Patent
1993-04-02
1995-02-21
Nagumo, Mark
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Polymers from only ethylenic monomers or processes of...
526223, 526 84, 526 85, 5263171, 5263184, 52631844, 526245, 526279, 526309, 526328, 5263297, 526262, 526346, C08F 238
Patent
active
053916654
DESCRIPTION:
BRIEF SUMMARY
TECHNICAL FIELD
The present invention relates to a process for producing a useful polymer having hydroxyl groups at both terminals capable of reacting with various kinds of functional groups, a composition containing the polymer and its use, and a polymer derived from the composition and its use.
BACKGROUND ART
A polymer having hydroxyl groups at both terminals is able to convert easily the hydroxyl groups into other functional groups by carrying out a suitable reaction on the groups and also, the polymer itself converts into a linear molecule and/or a network molecule by using reactivity of the terminal hydroxyl groups and carrying out a suitable reaction on these hydroxyl groups and, as a result, the polymer becomes a high-molecular compound having excellence in various properties such as strength, heat resistance, weather resistance, durability and so forth.
This polymer having hydroxyl groups at both terminals has, for example, the undermentioned great advantage by displaying a feature such as having the hydroxyl groups at both terminals.
In the case where the polymer is used as various kinds of resin materials such as a polyester resin, polyurethane resin, polycarbonate resin and the like, there is not any unreacted material which may damage material properties, and all polymers are surely assembled in a resin-crosslinked structure.
A polymer which a functional group was introduced into the side chain by copolymerizing a vinyl-based monomer having a functional group such as a hydroxyl group, carboxyl group, an and the like (hereinafter, referred to as "a copolymer of a functional group-containing vinyl-based monomer"); when said polymer was used for a reaction, the terminals become a play part (a free terminal) which is not assembled in the resin (crosslinked) structure, but such a thing does not occur in a polymer having hydroxyl groups at both terminals.
Compared with the copolymer of a functional group-containing vinyl-based monomer, because scattering in the distances among the functional groups is very small, the distances among reacting sites (crosslinking sites) are nearly constant, so that a homogeneous resin (crosslinked) structure is made.
In the case of a copolymer of a functional group-containing vinyl-based monomer, even if the synthesis of a thermoplastic polymer is attempted by making a material of 2.0 in average functional group number and by allowing this to react with a chain-elongating agent having two functionalities, since a polymer having three or more functionalities is statistically included because of a reason originated from the synthetic process, a thermosetting polymer is obtained as the major part, and a thermoplastic polymer can not be synthesized. However, in the case of a polymer having hydroxyl groups at both terminals, and not containing a polymer having three or more functionalities, a thermoplastic polymer, of which chain has been elongated, can be easily synthesized.
The polymer having hydroxyl groups at both terminals, by taking the above-described advantage, is very useful as raw materials for various resins such as a polyester resin, polyurethane resin, polycarbonate resin and the like, and further, as raw materials for coating, tacky and non-tacky adhesive, a sealing compound, urethane foam, a gel court material, thermoplastic elastomer, molding material, resin modifier (a material to afford impact resistance), vibration-controlling material, an elastic wall material, a floor material, fiber-processing material, an UV.EB curing resin, a reactive diluent used for high solid coating, etc. and so forth. In addition, the polymer is useful as various kinds of resin additives and their raw materials.
Preferable examples of the polymer having hydroxyl groups used as raw materials for coating, a tacky and nontacky adhesive, urethane foam, a sealing compound, a gel court material, thermoplastic elastomer, various kinds of molding materials, a resin modifier (a material to afford impact resistance), vibration-controlling material, an elastic wall material, a floor ma
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Ikeuchi Hiroyuki
Matsunaga Toshiaki
Takei Kazuo
Tamura Fumihide
Toba Taketo
Nagumo Mark
Nippon Shokubai Co. , Ltd.
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