Epoxy-functional polyester advanced with carboxyl-functional pol

Details Epoxy-functional polyester advanced with carboxyl-functional pol Epoxy-functional polyester advanced with carboxyl-functional pol

1998-11-11

2000-08-15

Sellers, Robert E.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

525437, 525448, C08G 6306, C08G 6346, C08G 63664, C08G 63672, C08G 6391

Patent

active

061038350

ABSTRACT:
An epoxy-functional polyester storage-stable at temperatures of up to 40.degree. C. and having a Tg of more than 40.degree. C. is prepared by the reaction of an epoxy-functional polyester intermediate (III) produced by glycidating a carboxyl-functional polyester derived from (a) at least one secondary carboxyl groups-containing aromatic or cycloaliphatic dicarboxylic acid (anhydride), (b) at least one aliphatic hydroxyl groups-containing diol, (c) optionally, a compound containing one primary or secondary hydroxyl group, or a compound comprising one primary or secondary hydroxyl group and one tertiary aliphatic carboxyl group, (d) optionally, a compound comprising a tertiary aliphatic carboxyl group and two aliphatic hydroxyl groups and (e) optionally, a trihydroxyalkane or tetrahydroxyalkane; with (IV) a carboxyl-functional polyester obtained from (a) and (b) above, or (a) alone.

REFERENCES:
patent: 4097466 (1978-06-01), Berger
patent: 5138078 (1992-08-01), Brytus
patent: 5869191 (1999-02-01), Van Gaalen
H. Blum, P. Hohlein, and J. Meixner, "Water Based Coatings With Excellent Saponification Stability," Xlllth Int. Conf. 1987, Athens, Greece, pp. 173-196.
T. Agawa and E.D. Dumain, "New Two-Component Powder Coating Binders: Polyester Acrylate Hybrid as TGIC Cure Alternative," Waterborne Higher Solids and Powder Coatings Symposium, Feb. 5-7, 1997, New Orleans, Louisiana.

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