초록 ▼

Curable compositions containing novel polysiloxanes having various reactive functional groups are disclosed. The curable compositions are useful as both ambient-cured and thermally-cured coating compositions which provide such properties as excellent appearance, mar resistance, acid etch resistance,

Curable compositions containing novel polysiloxanes having various reactive functional groups are disclosed. The curable compositions are useful as both ambient-cured and thermally-cured coating compositions which provide such properties as excellent appearance, mar resistance, acid etch resistance, adhesion, pot life, improved tack time, mar resistance and corrosion resistance.

대표청구항 ▼

[ We claim:] [1.] A curable composition comprising:(a) an organic polysiloxane containing reactive functional groups, said polysiloxane having the following general structural formula: [ STR 5 ] where m is at least 1; m' is 0 to 50; n is 0 to 50; R is selected from the group consisting of H, OH and

[ We claim:] [1.] A curable composition comprising:(a) an organic polysiloxane containing reactive functional groups, said polysiloxane having the following general structural formula: [ STR 5 ] where m is at least 1; m' is 0 to 50; n is 0 to 50; R is selected from the group consisting of H, OH and monovalent hydrocarbon groups connected to the silicon atoms; R.sup.a has the following structure:EQU R.sub.1 --O--Xwherein R.sub.1 is alkylene, oxyalkylene or alkylene aryl; and X is a moiety containing an NCO functional group, wherein at least a portion of the X groups contains two or more NCO functional groups; and(b) a curing agent which contains functional groups reactive with the NCO functional groups of (a).