Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Mixing of two or more solid polymers; mixing of solid...
Reexamination Certificate
2001-02-08
2002-08-27
Seidleck, James J. (Department: 1711)
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Mixing of two or more solid polymers; mixing of solid...
C525S408000, C525S118000, C525S162000, C525S523000, C525S529000, C525S530000, C525S531000, C528S423000, C528S424000
Reexamination Certificate
active
06441102
ABSTRACT:
BACKGROUND OF THE INVENTION
A. Technical Field
The present invention relates to a novel amino-group-containing polymer (salt) and a production process therefor wherein the amino-group-containing polymer (salt) is a product by a process including the step of introducing amino groups into a grafted polymer having a polyether skeleton.
B. Background Art
Grafted polymers obtained by carrying out a graft polymerization of unsaturated carboxylic monomers such as (meth)acrylic acid onto polyether compounds are, for example, utilized for uses, such as detergent builders, scale inhibitors, lubricants, dyeing assistants, fiber-treating agents, and dispersants for organic or inorganic particles, by taking advantage of the hydrophilicity of the grafted polymers. Such hydrophilic grafted polymers are, for example, disclosed in JP-A-208769/1996, JP-A-208770/1996, and JP-A-053645/1995.
On the other hand, amino-group-containing polymers are known to display excellent performances due to the presence of the amino group, such as epoxy curability and reactivity to other functional groups. For example, a curable resin composition comprising an amino-group-containing acrylic resin is disclosed in U.S. Pat. No. 3,705,076 and JP-A-056549/1988 wherein the amino-group-containing acrylic resin is obtained by carrying out a ring-opening addition of an alkylenimine to carboxyl group portions of a carboxyl-group-containing acrylic polymer; and a water-soluble resin comprising an acid-neutralized salt of an amino-group-containing acrylic resin is disclosed in U.S. Pat. No. 3,719,629 wherein the amino-group-containing acrylic resin is obtained by carrying out a ring-opening addition of an alkylenimine to carboxyl group portions of a carboxyl-group-containing acrylic polymer; and an amino-group-containing acrylic polymer, obtained by carrying out a ring-opening addition of an alkylenimine to a part of carboxyl group portions of a carboxyl-group-containing acrylic polymer and then neutralizing the rest of the carboxyl group portions with basic compounds such as triethylamine, is disclosed in U.S. Pat. No. 4,126,596; and a curable resin composition obtained by Michael addition between a polyvalent amino compound, such as polyamine or polyamide, and a polyvalent acryloyl group is disclosed as an adhesive in JP-A-023615/1986; and a polymer with a side chain amino group, which is obtained by carrying out a reaction between a carboxyl group of a polymer and a polyamine, is disclosed as a paint in JP-B-061321/1988 wherein the raw polymer is obtained by carrying out a copolymerization of a carboxyl-group-containing unsaturated monomer with another copolymerizable unsaturated monomer and wherein the polyamine has an aliphatic amino group or both an aliphatic amino group and at least one ether group.
However, in consideration of the ionic aspect, it is a conventional idea that a polyether skeleton having the nonionic character is usually endowed with only either anionic or cationic character by introducing either an anionic or cationic group as a graft portion. It is difficult to lead to an idea of introducing an anionic carboxyl group and then converting it into a cationic group. Therefore, up to now, no polymers obtained by introducing the carboxyl group and further an amino group into a graft portion of a grafted polymer having a polyether skeleton have been studied, and there have been no reports as to such polymers, either.
SUMMARY OF THE INVENTION
A. Object of the Invention
An object of the present invention is to provide a novel amino-group-containing polymer (salt) and a production process therefor wherein the amino-group-containing polymer (salt) is a product by a process including the step of introducing amino groups into a grafted polymer having a polyether skeleton.
B. Disclosure of the Invention
That is to say, an amino-group-containing polymer (salt), according to the present invention, is a product by a process including the steps of:
carrying out a graft polymerization of a monoethylenically unsaturated monomer component onto a polyether compound, wherein the monoethylenically unsaturated monomer component includes an unsaturated carboxylic monomer as an essential component, and wherein the polyether compound has a repeating unit of a general formula below in a ratio of not less than 30 mol % and has a number-average molecular weight of not less than 150; and
introducing amino groups by carrying out a ring-opening addition of an alkylenimine to at least a part of carboxyl group portions of the monoethylenically unsaturated monomer component which has been graft-polymerized onto the polyether compound, wherein at least a part of the amino groups might be neutralized with an acid;
wherein the general formula is:
wherein: R
1
, R
2
, R
3
and R
4
denote at least one member selected from the group consisting of a hydrogen atom, alkyl groups, alkenyl groups, and aryl groups, and these groups may coexist in a molecule.
A production process for an amino-group-containing polymer (salt), according to the present invention, comprises the steps of:
carrying out a graft polymerization of a monoethylenically unsaturated monomer component onto a polyether compound, wherein the monoethylenically unsaturated monomer component includes an unsaturated carboxylic monomer as an essential component, and wherein the polyether compound has a repeating unit of a general formula below in a ratio of not less than 30 mol % and has a number-average molecular weight of not less than 150; and
carrying out a ring-opening addition of an alkylenimine to at least a part of carboxyl group portions of the monoethylenically unsaturated monomer component;
wherein the general formula is:
wherein: R
1
, R
2
, R
3
and R
4
denote at least one member selected from the group consisting of a hydrogen atom, alkyl groups, alkenyl groups, and aryl groups, and these groups may coexist in a molecule.
These and other objects and the advantages of the present invention will be more fully apparent from the following detailed disclosure.
DETAILED DESCRIPTION OF THE INVENTION
The amino-group-containing polymer (salt), according to the present invention, is a product by a process including the steps of: carrying out a graft polymerization of a monoethylenically unsaturated monomer component onto a polyether compound; and carrying out a ring-opening addition of an alkylenimine to at least a part of carboxyl group portions of the monoethylenically unsaturated monomer component. More specifically, the amino-group-containing polymer (salt) is a product by a process including the steps of:
carrying out a graft polymerization of a monoethylenically unsaturated monomer component onto a polyether compound, wherein the monoethylenically unsaturated monomer component includes an unsaturated carboxylic monomer as an essential component, and wherein the polyether compound has a repeating unit of a general formula below in a ratio of not less than 30 mol % and has a number-average molecular weight of not less than 150; and
carrying out a ring-opening addition of an alkylenimine to at least a part of carboxyl group portions of the monoethylenically unsaturated monomer component which has been graft-polymerized onto the polyether compound;
wherein the general formula is:
wherein: R
1
, R
2
, R
3
and R
4
denote at least one member selected from the group consisting of a hydrogen atom, alkyl groups, alkenyl groups, and aryl groups, and these groups may coexist in a molecule.
A more specific mode for the amino-group-containing polymer (salt), according to the present invention, is an amino-group-containing polymer (salt) which is a product by a process including the steps of: carrying out a graft polymerization of a monoethylenically unsaturated monomer component onto a polyether compound in order to obtain a grafted polymer, wherein the monoethylenically unsaturated monomer component includes an unsaturated carboxylic monomer as an essential component; and carrying out a ring-opening addition of an alkylenimine to at least a part of carboxyl group portions derived
Akasaki Ichimoto
Saeki Koichiro
Saeki Takuya
Takagi Masahito
Asinovsky Olga
Haugen Law Firm PLLP
Nippon Shokubai Co. , Ltd.
Seidleck James J.
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