Abrasion resistant UV-curable hardcoat compositions

Details Abrasion resistant UV-curable hardcoat compositions Abrasion resistant UV-curable hardcoat compositions

1992-04-06

1993-09-07

Berman, Susan

Coating processes

Direct application of electrical, magnetic, wave, or...

Polymerization of coating utilizing direct application of...

427519, 522 37, 522 83, 522 84, 522 99, 428412, 428447, 524806, 526279, 528 26, 528 32, B05D 306, C08F 250, C08K 334, B32B 904

Patent

active

052427196

ABSTRACT:
A method of making a UV curable hardcoat composition uses a strip-free process and produces hardcoats having good scribed tape-pull adhesion, high resistance to scratching and a low delta taber haze after abrading for 500 cycles with a 500 gram weight. UV curable hardcoat compositions are also provided which contain high solids contents and high mole percentages of photoinitiator. Compositions containing methoxypropanol as a water miscible alcohol and methylbenzoylformate as a photoinitiator exhibit high taber hardness and can be made by processes which obviate the need for a time and energy consuming solvent-strip step. The processes are not only shorter, but safer than processes which include a solvent-strip step.

REFERENCES:
patent: 4455205 (1984-06-01), Olson et al.
patent: 4486504 (1984-12-01), Chung
patent: 4491508 (1985-01-01), Olson et al.
patent: 4576870 (1986-03-01), Liebler et al.
patent: 4650845 (1987-03-01), Hegel

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