One-component baking enamels

Details One-component baking enamels One-component baking enamels

1984-05-24

1987-03-10

Page, Thurman K.

Coating processes

With post-treatment of coating or coating material

Heating or drying

4273897, 4273935, 524315, 524360, 524361, 524602, 524604, 524605, 525437, 525440, 528 45, B05D 302, C08G 1881, C08K 510

Patent

active

046490671

ABSTRACT:
One-component baking enamels of polyesters, containing hydroxyl groups, and polyisocyanates, wherein the polyisocyanate component consists of 2-methyl-1,5-diisocyanatopentane (MPDI) having the formula (I): ##STR1## which is blocked totally or partially by .epsilon.-caprolactam or acetoxime, or a mixture of the same with 2-ethyl-1,4-diisocyanatobutane (EBDI) having the formula (II): ##STR2## which is blocked totally or partially by .epsilon.-caprolactam or acetoxime, wherein the diisocyanate mixture of (I) and (II) has about 88 to 99% by weight of (I) and about 12 to 1% by weight of (II) and the free isocyanate (NCO) content is up to about 10% by weight.
The one-component baking enamels are suitable for application to metal, glass and plastic objects and exhibit excellent flexibility and weather resistance.

REFERENCES:
patent: 4150211 (1979-04-01), Muller et al.
patent: 4151152 (1979-04-01), Schmitt et al.
patent: 4289682 (1981-09-01), Peters
patent: 4289813 (1981-09-01), Blomeyer et al.
patent: 4530859 (1985-07-01), Grunzinger, Jr.

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