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...
Reexamination Certificate
2006-03-07
2006-03-07
Cain, Edward J. (Department: 1714)
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...
C524S804000, C524S832000, C524S839000
Reexamination Certificate
active
07008998
ABSTRACT:
The invention relates to a method for preparing aqueous dispersions, especially electrodepositable aqueous dispersions. The invention requires the use of a polymer (a) comprising one or more water dispersible groups per molecule and one or more functional groups (f), and at least one crosslinking agent (b) comprising one or more blocked functional groups (fb) reactive with polymer (a) after unblocking. Crosslinking agent (b) has a Tgof from 40 to 70° C./105 to 158° F. and is a solid at 23.9° C./75° F. when at 100% by weight solids. Crosslinking agent (b) is mixed into polymer (a) at a temperature at or above the melting temperatures of both polymer (a) and compound (b) but below the temperature at which blocked functional groups (fb) unblock. Sufficient water is added to the resulting melt-mixture (ii) to provide an aqueous dispersion.
REFERENCES:
patent: 4039627 (1977-08-01), Katsimbas
patent: 4442244 (1984-04-01), Johannes et al.
patent: 4772329 (1988-09-01), Lühmann et al.
patent: 4777207 (1988-10-01), Redman
patent: 4900415 (1990-02-01), Chung et al.
patent: 5550284 (1996-08-01), Sato et al.
patent: 5670571 (1997-09-01), Gabrielson et al.
patent: 5998507 (1999-12-01), Adachi et al.
patent: 6054033 (2000-04-01), Hunakoshi et al.
patent: 6147144 (2000-11-01), Song et al.
patent: 6204310 (2001-03-01), Choudhery
patent: 6235812 (2001-05-01), Reuter et al.
patent: 6627725 (2003-09-01), Ardaud et al.
patent: 2175530 (1996-05-01), None
patent: 0 612 818 (1994-02-01), None
patent: WO87/02043 (1987-04-01), None
Patent Abstract of Japan, vol. 1999, no 02, Feb. 26, 1999, JP 10 292131 A (Nippon Paint Co. LTD).
International Search Report for PCT/US 02/27037, International Filing Date Sep. 8, 2002 on 4 pages.
English Abstract for JP49-001631.
Machine Translation for JP 09-012974.
Machine Translation for JP06-212049.
Machine Translation for JP09-087554.
English Abstract for FR 02368527.
Alford William H.
Cooley Grant E.
Tazzia Charles L.
BASF Corporation
Cain Edward J.
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