NCO-free resins useful as a substitute for polyurethanes
AssigneeGuertin Bros. Coatings and Sealants Ltd.
InventorPaul S. L. Chan
Life of this patent
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Abstract
Compositions obtained by curing an acetoacetylated poly(meth)acrylic or polyester-based resin and a NCO-free urethane polymer having vinylic end groups is disclosed.
Claims22
A polymer obtained by curing, using a base catalyst, a first component and a second component, wherein said first component comprises at least one acetoacetylated polymer resin and wherein said second component comprises at least one NCO-free urethane polymer resin having vinylic end groups, wherein said base catalyst is tetramethylguanidine.
A polymer obtained by curing a first component and a second component in the presence of a base catalyst, wherein:
- (i) said first component comprises at least one acetoacetylated polymer resin;
- and
- (ii) said second component comprises at least one NCO-free urethane polymer having vinylic end groups and corresponding to one of formula (iv) to (vi);
- wherein
- formula (iv) is:
- CH.sub.2 .dbd.C(R.sup.1)--CO--O--R.sup.2 --O--(CO--NH--B--NH--CO--O--A--O).sub.n CO--NH--B--NH--CO--O--R.sup.2 --O--CO--C(R.sup.1).dbd.CH.sub.2
- formula (v) is:
- (CH.sub.2 .dbd.C(R.sup.1)COOR.sup.2 OCONH).sub.m X, and
- formula (vi) is:
- (CH.sub.2 .dbd.C(R.sup.1)COOR.sub.2 OCOHNBNHCOO).sub.p A
- wherein:
- each R.sup.1 is independently H or CH.sub.3 ;
- each R.sub.2 is independently a C.sub.2-3 linear or branched saturated alkylene moiety;
- each B is independently a C.sub.2-12 linear or branched saturated alkylene moiety, or a C.sub.4-14 cyclic saturated alkylene moiety, or a C.sub.6-12 arylene moiety;
- each A is independently a C.sub.2-12 linear or branched saturated alkylene moiety, or a C.sub.4-12 cyclic saturated alkylene moiety, or a C.sub.6-12 arylene moiety;
- X is a C.sub.2-12 linear or branched saturated alkylene moiety, or a C.sub.4-12 cyclic saturated alkylene moiety, or a C.sub.6-12 arylene moiety;
- n is an integer of from 1 to 10;
- m is 2, 3 or 4;
- and
- p is 2, 3 or 4, wherein said base catalyst is tetramethylguandine.
A polymer obtained by curing a first component and a second component in the presence of a base catalyst, wherein:
- (i) said first component comprises at lest one acetoacetylated polymer resin;
- and
- (ii) said second component comprises at least one NCO-free urethane polymer having vinylic end groups and corresponding to one of formula (iv) to (vi);
- wherein
- formula (iv) is:
- CH.sub.2 .dbd.C(R.sup.1)--CO--O--R.sup.2 --O--(CO--NH--B--NH--CO--O--A--O).sub.n CO--NH--B--NH--CO--O--R.sup.2 --O--CO--C(R.sup.1).dbd.CH.sub.2
- formula (v) is:
- (CH.sub.2 .dbd.C(R.sup.1) COOR.sup.2 OCONH).sub.m X, and
- formula (VI) is:
- (CH.sub.2 .dbd.C(R.sup.1)COOR.sub.2 OCONHBNHCOO).sub.p A
- wherein:
- each R.sup.1 is independently H or CH.sub.3 ;
- each R.sub.2 is independently a C.sub.2-3 linear or branched saturated alkylene moiety;
- each B is independently a C.sub.2-12 linear or branched saturated alkylene moiety, or a C.sub.4-14 cyclic saturated alkylene moiety, or a C.sub.6-12 arylene moiety;
- each A is independently a C.sub.2-12 linear or branched saturated alkylene moiety, or a C.sub.4-12 cyclic saturated alkylene moiety, or a C.sub.6-12 arylene moiety;
- X is a C.sub.2-12 linear or branched saturated alkylene moiety, or a C.sub.4-12 cyclic saturated alkylene moiety, or a C.sub.6-12 arylene moiety;
- n is an integer of from about 1 to 10;
- m is 2, 3 or 4;
- and
- p is 2, 3 or 4, wherein said base catalyst is 1,8-diaza-bicycloundecene.
A polymer obtained by curing, using a base catalyst, a first component and a second component, wherein said first component comprises at least one acetoacetylated polymer resin and wherein said second component comprises at least one NCO-free urethane polymer resin having vinylic end groups, wherein said base catalyst is 1,8-diaza-bicycloundecene.
Dependencies are inferred from the claim text.