Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – At least one aryl ring which is part of a fused or bridged...
Patent
1995-08-24
1997-06-10
Niland, Patrick
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
At least one aryl ring which is part of a fused or bridged...
523160, 523161, 524539, 106 3132, 106 3144, 106 3143, 401 40, C08J 300, C08K 320, C08L 7500, C03C 1700
Patent
active
056376383
ABSTRACT:
An erasable ink composition comprising a waterborne polyurethane-urea containing dye moiety covalently bonded thereto. The ink is intended for use in any of a variety of marking instruments, in particular, a ball-point pen.
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Frisch et al., "Advances in Urethane Science and Technology", vol. 10, pp. 121-162 (1987).
Banning Jeffery H.
Chadwick Barry
Chandler Wayne A.
Villiger David C.
Wang Aiying
Bic Corporation
Niland Patrick
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