Coating processes – With post-treatment of coating or coating material – Heating or drying
Patent
1982-11-15
1985-07-23
Childs, S. L.
Coating processes
With post-treatment of coating or coating material
Heating or drying
4273882, 427389, 4273899, 427391, 427393, 4273935, 4273936, 528 45, 528 73, B05D 302
Patent
active
045308594
ABSTRACT:
A method of preparing a storage-stable one-part reactive liquid thermal curing polymeric coating composition from an isocyanate-functional polymeric compound which has a substantial portion of its isocyanate groups masked with an isocyanate masking agent, and a crosslinking agent which is substantially insoluble in aprotic solvents. These liquid compositions are homogeneous even when free of solvents. Preferably the crosslinking agent is a crystalline polyol. The method involves the synthesis of a solubilizing oligomer which is formed by the partial reaction of the crosslinking agent and the unmasked isocyanate-functional polymeric compound. The thermal curing of these compositions results in polymeric coatings which possess superior physical properties. These cured coatings are particularly useful in the manufacture of retroreflective sheeting.
REFERENCES:
patent: 3248371 (1966-04-01), Damusis
patent: 3267078 (1966-08-01), Damusis
patent: 3555113 (1971-01-01), Sattler
patent: 3583943 (1971-06-01), Weber et al.
patent: 3621000 (1971-11-01), Schmelzer et al.
patent: 3694389 (1972-09-01), Levy
patent: 3763269 (1973-10-01), Formaini
patent: 3771571 (1973-01-01), Farah
patent: 3808162 (1974-04-01), Allen et al.
patent: 3824217 (1974-07-01), Barker
patent: 3846378 (1974-11-01), Griswold
patent: 3857818 (1974-12-01), Frizelle
patent: 3926875 (1975-12-01), Tsugukuni et al.
patent: 3933759 (1976-01-01), Hoeschele
patent: 3993849 (1976-11-01), Victorius
patent: 4031040 (1977-06-01), Otter et al.
patent: 4046744 (1977-09-01), Jenkins
patent: 4101473 (1978-07-01), Lander
patent: 4203889 (1980-05-01), Chang et al.
patent: 4211849 (1980-07-01), Kollmeier et al.
patent: 4235977 (1980-11-01), Frisch et al.
patent: 4238592 (1980-12-01), Schmitt et al.
patent: 4245080 (1981-01-01), Frisch et al.
patent: 4273909 (1981-06-01), Arco
patent: 4280944 (1981-07-01), Saito et al.
J. E. Pregler, "Flexible Urethane Resins and Coating Materials Development," Contract No. N00019-70-C-0309, Naval Air Systems Command, Department of the Navy, (Mar. 1971).
J. H. Saunders and K. C. Frisch, "Polyurethanes," Chemistry and Technology, vols. 1 and 2, Interscience Publishers, (1964).
E. N. Doyle, "The Development and Use of Polyurethane Products," pp. 27, 49-51, 68 and 69, 91, and 125-144, (McGraw-Hill 1971).
Boeder Jennie G.
Childs S. L.
Minnesota Mining and Manufacturing Company
Sell Donald M.
Smith James A.
LandOfFree
Method of preparing a polymeric coating composition from a block does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method of preparing a polymeric coating composition from a block, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method of preparing a polymeric coating composition from a block will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-634312