Coating composition of an acrylic polymer, a dispersed acrylic polymer and an alkylated melamine crosslinking agent

Patent 4591533 Issued on May 27, 1986. Estimated Expiration Date:

June 3, 2005. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.

Abstract Claims Description Full Text

Patent References

3919351

Thermoplastic extensible coating compositions
Patent #: 3975457
Issued on: 08/17/1976
Inventor: Chang , et al.

Composition useful in making extensible films
Patent #: 4208494
Issued on: 06/17/1980
Inventor: Chang , et al.

Composition useful in making extensible films
Patent #: 4208495
Issued on: 06/17/1980
Inventor: Chang , et al.

One-pack high solid coating composition
Patent #: 4291137
Issued on: 09/22/1981
Inventor: Nakate , et al.

High solids coating composition of a blend of a low molecular weight acrylic polymer and a medium molecular weight acrylic polymer and an alkylated melamine cross-linking agent
Patent #: 4330458
Issued on: 05/18/1982
Inventor: Spinelli , et al.

Powder coating composition for automotive topcoat
Patent #: 4346144
Issued on: 08/24/1982
Inventor: Craven

Paint composition comprising hydroxy functional film former and crosslinked dispersion flow control additive Patent #: 4415697
Issued on: 11/15/1983
Inventor: Peng , et al.

Inventors

Assignee

E. I. Du Pont de Nemours and Company

Application

No. 06/740895 filed on 06/03/1985

US Classes:

428/520, Ester, halide or nitrile of addition polymer427/407.1, Synthetic resin coating427/410, Epoxy or polyepoxide containing coating428/460, Next to aldehyde or ketone condensation product428/463, Ester, halide or nitrile of addition polymer428/515, Next to second addition polymer from unsaturated monomers524/512, With solid polymer derived from at least one reactant wherein at least one of the reactants forming the solid polymer is an aldehyde or derivative; or with SPFI or SICP derived from an aldehyde or derivative wherein at least one of the necessary reactants is saturated524/902, Electrostatic spray525/161, Solid polymer derived from ethylenic reactants only derived from reactant containing a heterocyclic ring or fused-, bridged-ring system excluding an anhydride group which produces the fused- or bridged-ring system or heterocyclic ring525/162, Solid polymer derived from ethylenic reactant only derived from reactant containing hydroxyl or ether group525/163Solid polymer derived from ethylenic reactants only containing a carboxylic acid, ester, or anhydride group

Examiners

Primary: Pertilla, Theodore E.

Attorney, Agent or Firm

Fricke; Hilmar L.

International Classes

C09D 133/06 (20060101)
C09D 151/00 (20060101)
C08L 33/00 (20060101)
C08L 33/06 (20060101)
C08L 61/20 (20060101)
C08L 61/00 (20060101)

Abstract

A coating composition that is used primarily as a clear finish over a colored or pigmented finish that are applied to automobile and truck bodies; the composition contains as the film forming binder(a) an acrylic polymer(b) a self stabilized dispersed resin formed by polymerizing in solution the following constituents:(1) an acrylic solution polymer,(2) monomers of alkyl methacrylate or acrylate and hydroxy ethyl acrylate or methacrylate, wherein either the acrylic solution polymer contains post reacted glycidyl methacrylate or acrylate or the monomers contain glycidyl methacrylate or acrylate, and(c) an alkylated melamine formaldehyde crosslinking agent.