Aromatic polycarbodiimide crosslinkers
First Claim
1. A stabilized composition comprising an aqueous dispersion of an aromatic polycarbodiimide having the formula of either
or
C═
O--].sub.n --R'"'"'--N(A)C(O)--{--O--Z'"'"'--}.sub.p --O--E'"'"'
space="preserve" listing-type="equation">E--O--{--Z--O--}.sub.m --C(O)N(A)--[(--R--N═
C═
O--).sub.q --R'"'"'--N(A)C(O)--B--C(O)N(A)--].sub.t --R"--N(A)C(O)--{--O--Z'"'"'--}.sub.p --O--E'"'"'wherein m is an integer of from 5 to 10;
n is an integer of from 2 to 7;
p is an integer of from 5 to 10;
q is an integer of from 1 to 5 and t is an integer of from 1 to 5, wherein the product of q and t is from 4 to 10;
A is hydrogen;
B is a group which does not contain carbodiimide groups;
E and E'"'"' are CH3 ;
R, R'"'"', and R" are independently selected from arylene, alkyl-substituted arylene, biarylene alkylene, or alkyl-substituted biarylene alkylene; and
Z and Z'"'"' are C1 -C6 alkyl groups; and
a stabilizer in an amount effective to enhance the stability of said polycarbodiimide, wherein said stabilizer is selected from the group consisting of hindered phenols, hindered nitroxyls, and mixtures thereof.
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Accused Products
Abstract
Disclosed are certain aromatic polycarbodiimides. Also disclosed is the use of an aromatic polycarbodiimide containing only aromatic carbodiimide groups as a cross-linker for a coating binder polymer bearing carboxyl groups.
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Citations
1 Claim
- 1. A stabilized composition comprising an aqueous dispersion of an aromatic polycarbodiimide having the formula of either
- space="preserve" listing-type="equation">E--O--{--Z--O--}.sub.m --C(O)N(A)--[--R--N═
C═
O--].sub.n --R'"'"'--N(A)C(O)--{--O--Z'"'"'--}.sub.p --O--E'"'"'
or
space="preserve" listing-type="equation">E--O--{--Z--O--}.sub.m --C(O)N(A)--[(--R--N═
C═
O--).sub.q --R'"'"'--N(A)C(O)--B--C(O)N(A)--].sub.t --R"--N(A)C(O)--{--O--Z'"'"'--}.sub.p --O--E'"'"'wherein m is an integer of from 5 to 10;
n is an integer of from 2 to 7;
p is an integer of from 5 to 10;
q is an integer of from 1 to 5 and t is an integer of from 1 to 5, wherein the product of q and t is from 4 to 10;
A is hydrogen;
B is a group which does not contain carbodiimide groups;
E and E'"'"' are CH3 ;
R, R'"'"', and R" are independently selected from arylene, alkyl-substituted arylene, biarylene alkylene, or alkyl-substituted biarylene alkylene; and
Z and Z'"'"' are C1 -C6 alkyl groups; and
a stabilizer in an amount effective to enhance the stability of said polycarbodiimide, wherein said stabilizer is selected from the group consisting of hindered phenols, hindered nitroxyls, and mixtures thereof. - space="preserve" listing-type="equation">E--O--{--Z--O--}.sub.m --C(O)N(A)--[--R--N═
Specification
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- Resources
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Current AssigneeRohm and Haas Company (Dow, Inc.)
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Original AssigneeRohm and Haas Company (Dow, Inc.)
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InventorsBrown, Ward T., Day, James C.
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Primary Examiner(s)Seidleck, James J.
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Assistant Examiner(s)SERGENT, RABON A
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Application NumberUS08/235,585Time in Patent Office928 DaysField of Search564/252, 252/182.23, 252/182.24, 252/182.26, 252/182.27, 252/182.28, 252/182.29, 524/871, 524/259, 524/714, 524/765, 524/323, 524/351, 524/352, 524/186, 524/259, 524/589, 524/591, 524/839, 528/44, 528/51, 528/76, 528/80, 528/49, 528/52, 528/48, 560/26US Class Current524/186CPC Class CodesC08G 18/025 the polymeric products cont...C08G 18/283 Compounds containing ether ...C08G 18/284 Compounds containing ester ...C08G 18/833 by nitrogen containing comp...C08L 2666/20 Macromolecular compounds ha...C09D 175/04 Polyurethanes
