Cured materials of unsaturated polyester resin
AssigneesOsaka Municipal Government, Wako Pure Chemical Industries, Ltd.
InventorsYasuyuki Agari, Masayuki Shimada, Akira Ueda, Hideo Takeuchi, Nobutaka Shimamura
Life of this patent
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Abstract
An unsaturated polyester resin composition contains a silicone-containing macro-azo-initiator and/or a silicone-containing block copolymer obtained by copolymerizing the silicone-containing macro-azo-initiator with a nonionic monomer.
Claims8
An unsaturated polyester resin composition comprising (a) an unsaturated polyester resin, and (b) a silicone-containing macro-azo-initiator shown by the general formula (1):
- ##STR14## wherein R.sup.1 is a lower alkyl group;
- R.sup.2 is a lower alkyl group or a cyano group;
- A.sub.1 is an alkylene group which may contain one or more oxygen atoms(s);
- R.sup.3 is a lower alkyl group or a phenyl group;
- A.sub.2 is a lower alkylene group which may contain one or more oxygen atom(s) and/or aromatic rings(s);
- Y is --NH-- or --O--;
- m is 0 or a natural number;
- and n is a natural number, and/or a silicone-containing block copolymer having a repeating unit shown by the general formula (1a):
- ##STR15## wherein R.sup.1, R.sup.2, R.sup.3, A.sup.1, A.sub.2, Y, and m are as defined above, and a repeating unit shown by the general formula (2a):
- ##STR16## wherein R.sup.4 is a hydrogen atom, a lower alkyl group or a halogen atom;
- R.sup.5 is a hydrogen atom, a lower alkyl group, a halogen atom, an alkyloxycarbonyl group or a formyl group;
- R.sup.6 is a hydrogen atom, a lower alkyl group, a halogen atom or an alkyloxycarbonyl group;
- R.sup.7 is an alkylene group which may optionally contain double bond(s) or a direct link;
- and R.sup.8 is a hydrogen atom, an alkyl group, a haloalkyl group, an aryl group which may have substituent(s), a halogen atom, an alkyloxycarbonyl group, an aralkyloxycarbonyl group, a hydroxyalkyloxycarbonyl group, an aryloxycarbonyl group, a cyano group, an acyloxy group, a formyl group or a hydroxyl group.
A method for preparation of cured materials of unsaturated polyester resin composition containing a siloxane part in a surface layer, which comprises allowing unsaturated polyester resin to contact with a silicone-containing macro-azo-initiator shown by the general formula (1):
- ##STR19## wherein R.sup.1 is a lower alkyl group;
- R.sup.2 is a lower alkyl group or a cyano group;
- A.sub.1 is an alkylene group which may contain one or more oxygen atoms(s);
- R.sup.3 is a lower alkyl group or a phenyl group;
- A.sub.2 is a lower alkylene group which may contain one or more oxygen atom(s) and/or aromatic rings(s);
- Y is --NH-- or --O--;
- m is 0 or a natural number;
- and n is a natural number, and/or a silicone-containing block copolymer having a repeating unit shown by the general formula (1a):
- ##STR20## wherein R.sub.1, R.sub.2, R.sub.3, A.sub.1, A.sub.2, Y, and m are as defined above, and a repeating unit shown by the general formula (2a):
- ##STR21## wherein R.sup.4 is a hydrogen atom, a lower alkyl group or a halogen atom;
- R.sup.5 is a hydrogen atom, a lower alkyl group, a halogen atom, an alkyloxycarbonyl group or a formyl group;
- R.sup.6 is a hydrogen atom, a lower alkyl group, a halogen atom or an alkyloxycarbonyl group;
- R.sup.7 is an alkylene group which may optionally contain double bond(s) or a direct link;
- and R.sup.8 is a hydrogen atom, an alkyl group, a haloalkyl group, an aryl group which may have substituent(s), a halogen atom, an alkyloxycarbonyl group, an aralkyloxycarbonyl group, a hydroxyalkyloxycarbonyl group, an aryloxycarbonyl group, a cyano group, an acyloxy group, a formyl group or a hydroxyl group, and allowing a curing reaction to take place.
A method for preparation of cured materials of unsaturated polyester resin composition containing a siloxane part in a surface layer, which comprises starting a curing reaction of unsaturated polyester resin composition, then allowing the surface of the unsaturated polyester resin to contact with a silicone-containing macro-azo-initiator shown by the general formula (1):
- ##STR22## wherein R.sup.1 is a lower alkyl group;
- R.sup.2 is a lower alkyl group or a cyano group;
- A.sub.1 is an alkylene group which may contain one or more oxygen atoms(s);
- R.sup.3 is a lower alkyl group or a phenyl group;
- A.sub.2 is a lower alkylene group which may contain one or more oxygen atom(s) and/or aromatic rings(s);
- Y is --NH-- or --O--;
- m is 0 or a natural number;
- and n is a natural number, and/or a silicone-containing block copolymer having a repeating unit shown by the general formula (1a):
- ##STR23## wherein R.sup.1, R.sup.2, R.sup.3, A.sub.1, A.sub.2, Y, and m are as defined above and a repeating unit shown by the general formula (2a):
- ##STR24## wherein R.sup.4 is a hydrogen atom, a lower alkyl group or a halogen atom;
- R.sup.5 is a hydrogen atom, a lower alkyl group, a halogen atom, an alkyloxycarbonyl group or a formyl group;
- R.sup.6 is a hydrogen atom, a lower alkyl group, a halogen atom or an alkyloxycarbonyl group;
- R.sup.7 is an alkylene group which may optionally contain double bond(s) or a direct link;
- and R.sup.8 is a hydrogen atom, an alkyl group, a haloalkyl group, an aryl group which may have substituent(s), a halogen atom, an alkyloxycarbonyl group, an aralkyloxycarbonyl group, a hydroxyalkyloxycarbonyl group, an aryloxycarbonyl group, a cyano group, an acyloxy group, a formyl group or a hydroxyl group during the curing reaction, and continuing the curing reaction to completion.
Cured materials of unsaturated polyester resin composition, which contain a silicone-containing compound having a repeating unit shown by the general formula (1a):
- ##STR27## wherein R.sup.1 is a lower alkyl group;
- R.sup.2 is a lower alkyl group or a cyano group;
- A.sub.1, is an alkylene group which may contain one or more oxygen atom(s);
- R.sup.3 is a lower alkyl group or a phenyl group;
- A.sub.2 is a lower alkylene group which may contain one or more oxygen atom(s) and/or aromatic ring(s);
- Y is --NH-- or --O--;
- and m is 0 or a natural number and a siloxane part of the silicone-containing compound is present mainly in a surface layer.
Dependencies are inferred from the claim text.