Oxyalkylene polymer, method for producing same, curable composition and cured product
AssigneeAGC Inc.
InventorsKazuma KONNO, Takashi ITO, Kosuke YAMASAKI, Yoshitaka SUNAYAMA, Hajime TAKEDA
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Abstract
The present invention relates to an oxyalkylene polymer including: a polyoxyalkylene chain containing an oxyethylene group; and a reactive silicon group which is bonded to the polyoxyalkylene chain via an organic group containing one group represented by —C(═O)NH—, wherein a number average molecular weight is from 3,000 to 150,000, a molecular weight distribution is 2.00 or less, an amount of the oxyethylene group is from 3 to 90% by mass, and the number of the reactive silicon groups per molecule is 0.5 or more.
Claims12
An oxyalkylene polymer comprising:
- a polyoxyalkylene chain containing an oxyethylene group:
- and
- a reactive silicon group which is represented by the following formula (1) and bonded to the polyoxyalkylene chain via an organic group containing one group represented by the following formula (i),
- wherein a number average molecular weight is from 3.000 to 150,000, a molecular weight distribution is 2.00 or less, an amount of the oxyethylene group is from 3 to 90% by, mass, and the number of the reactive silicon groups per molecule is 0.5 or more,
- —C(═O)NH— (i)
- —SiXaR3-a (1)
- wherein R is a monovalent organic group having 1 to 20 carbon atoms and represents an organic group other than a hydrolyzable group;
- X represents a hydroxyl group, a halogen atom, or a hydrolyzable group;
- a represents an integer of 1 to 3;
- when a is 1, R may be the same as or different from each other;
- and when a is 2 or 3 X may be the same as or different from each other.
A method for producing an oxyalkylene, polymer,
- the method comprising
- reacting a precursor polymer which includes a polyoxyalkylene chain containing an oxyethylene group, and an active hydrogen-containing group bonded to the polyoxyalkylene chain, and has a number average molecular weight of 3,000 to 150,000, a molecular weight distribution of 2.00 or less and an amount of the oxyethylene group of 3 to 90% by mass,
- with a compound represented by the following formula (2), so that the number of reactive silicon groups represented by the following formula (1) per molecule is 0.5 or more, to obtain an oxyalkylene polymer.
- —SiXaR3-a (1)
- wherein R is a monovalent organic group having 1 to 20 carbon atoms and represents an organic group other than a hydrolyzable group:
- X represents a hydroxyl group, a halogen atom, or a hydrolyzal3le group;
- a represents an integer of 1 to 3;
- when a is 1, R may be the same as or different from each other;
- and when a is 2 or 3, X may be the same as or different from each other,
- O═C═N—Q1—SiXaR3-a (2)
- wherein Q1 is a divalent organic group having 1 to 20 carbon atoms, and R, X, and a are the same as those defined in the formula (1).
Dependencies are inferred from the claim text.