Patent US4414357A successfully refreshed from Google Patents.
US4414357A
Expired / Lapsed
US
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Polyester or alkyd resin composition containing acrylic microgels
Assignee: BASF Corp
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Filing: 1981-08-31
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Granted: 1983-11-08
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Expires: 2001-08-31
Abstract
Abstract A method of making a polyester or alkyd resin composition containing acrylic microgels comprises preparing an aqueous microgel emulsion of an acrylic resin which is crosslinked with a multifunctional crosslinking agent. The water from the emulsion can be removed by coagulation and/or azeotropic distillation with an organic solvent in which the microgel is insoluble and which forms an azeotrope with water. The resulting dehydrated microgel can be incorporated into a polyester or alkyd resin. Alternatively, the acrylic microgel emulsion can be incorporated into a water reducible alkyd resin.
Inventors
- 👤 Howard J. Wright
- 👤 David P. Leonard
- 👤 Roger A. Etzell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 23:52
CPC Classifications
C; C09; C09D; C09D133/00; C09D133/04; C09D133/06; C09D133/062; C09D167/00; C08; C08L; C08L2205/00; C08L2205/02; C08L2205/14; C08L2205/18; C08L33/00; C08L33/04; C08L33/06; C08L67/00
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
197 words
A method of making a polyester or alkyd resin composition containing an acrylic microgel for use in paint systems to provide coatings of improved sag resistance which comprises preparing an aqueous, microgel emulsion by the emulsion polymerization in water of a mixture of ethylenically unsaturated monomers, at least one of said monomers being an acrylic or methacrylic acid, or an --OH substituted alkyl ester thereof, and containing a --COOH or --OH group, and at least another of said monomers being selected from an alkyl ester of an acrylic or methacrylic acid, styrene and α-methyl styrene and being free from --COOH and --OH groups, and a multifunctional crosslinking agent present in an amount of 5-70 percent by weight of the total weight of said ethylenically unsaturated monomers and crosslinking agent, removing water from the emulsion by coagulation and/or azeotropic distillation with an organic solvent in which the microgel is insoluble and which forms an azeotrope with water, and incorporating the microgel into a polyester or alkyd resin to provide said polyester or alkyd microgel resin composition wherein the amount of microgel solids is in the range of 5 to 15 percent by weight of the total resin solids.
Claim 2
Independent Claim
197 words
A method of making a polyester or alkyd resin composition containing an acrylic microgel for use in paint systems to provide coatings of improved sag resistance which comprises preparing an aqueous, microgel emulsion by the emulsion polymerization in water of a mixture of ethylenically unsaturated monomers, at least one of said monomers being an acrylic or methacrylic acid, or an --OH substituted alkyl ester thereof, and containing a --COOH or --OH group, and at least another of said monomers being selected from an alkyl ester of an acrylic or methacrylic acid, styrene and α-methyl styrene and being free from --COOH and --OH groups, and a multifunctional crosslinking agent present in an amount of 5-70 percent by weight of the total weight of said ethylenically unsaturated monomers and crosslinking agent, removing water from the emulsion by coagulation and/or azeotropic distillation with an organic solvent in which the microgel is insoluble and which forms an azeotrope with water, and incorporating the microgel into a polyester or alkyd resin to provide said polyester or alkyd microgel resin composition wherein the amount of microgel solids is in the range of 5 to 15 percent by weight of the total resin solids.
Claim 3
Dependent Claim
39 words
The method of claim 1 wherein said ethylenically unsaturated monomer containing a --COOH or --OH group used to prepare said aqueous microgel emulsion is selected from acrylic acid, methacrylic acid, hydroxyethyl acrylate, hydroxypropyl acrylate, hydroxyethyl methacrylate and hydroxypropyl methacrylate.
Claim 4
Dependent Claim
54 words
The method of claim 1 wherein the amount of ethylenically unsaturated monomer containing said --OH or --COOH groups used in the preparation of said microgel ranges from 10 to 90 weight percent and the amount of said ethylenically unsaturated monomer free from said --OH or --COOH groups ranges from 90 to 10 weight percent.
Claim 5
Dependent Claim
9 words
The polyester or alkyd resin composition of claim 1.
Claim 6
Dependent Claim
9 words
A paint containing the resin composition of claim 4.
Claim 7
Independent Claim
168 words
A method of making an alkyd resin composition containing an acrylic microgel for use in paint systems to provide coatings of improved sag resistance which comprises preparing an aqueous microgel emulsion by the emulsion polymerization in water of a mixture of ethylenically unsaturated monomers, at least one of said monomers being an acrylic or methacrylic acid, or an --OH substituted alkyl ester thereof, and containing a --COOH or --OH group, and at least another of said monomers being selected from an alkyl ester of an acrylic or methacrylic acid, styrene and α-methyl styrene, and being free from --COOH and --OH groups, and a multifunctional crosslinking agent present in an amount of 5-70 percent by weight of the total weight of said ethylenically unsaturated monomers and crosslinking agent and incorporating the resulting acrylic microgel emulsion into a water reducible alkyd resin to provide said alkyd resin composition wherein the amount of microgel solids is in the range of 5 to 15 percent by weight of the total resin solids.
Claim 8
Independent Claim
168 words
A method of making an alkyd resin composition containing an acrylic microgel for use in paint systems to provide coatings of improved sag resistance which comprises preparing an aqueous microgel emulsion by the emulsion polymerization in water of a mixture of ethylenically unsaturated monomers, at least one of said monomers being an acrylic or methacrylic acid, or an --OH substituted alkyl ester thereof, and containing a --COOH or --OH group, and at least another of said monomers being selected from an alkyl ester of an acrylic or methacrylic acid, styrene and α-methyl styrene, and being free from --COOH and --OH groups, and a multifunctional crosslinking agent present in an amount of 5-70 percent by weight of the total weight of said ethylenically unsaturated monomers and crosslinking agent and incorporating the resulting acrylic microgel emulsion into a water reducible alkyd resin to provide said alkyd resin composition wherein the amount of microgel solids is in the range of 5 to 15 percent by weight of the total resin solids.
Claim 9
Dependent Claim
39 words
The method of claim 6 wherein said ethylenically unsaturated monomer containing a --COOH or --OH group used to prepare said aqueous microgel emulsion is selected from acrylic acid, methacrylic acid, hydroxyethyl acrylate, hydroxypropyl acrylate, hydroxyethyl methacrylate and hydroxypropyl methacrylate.
Claim 10
Dependent Claim
54 words
The method of claim 6 wherein the amount of ethylenically unsaturated monomer containing said --OH or --COOH groups used in the preparation of said microgel ranges from 10 to 90 weight percent and the amount of said ethylenically unsaturated monomer free from said --OH or --COOH groups ranges from 90 to 10 weight percent.
Claim 11
Dependent Claim
7 words
The alkyd resin composition of claim 6.
Claim 12
Dependent Claim
10 words
A paint containing the alkyd resin composition of claim 9.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-11-07 | 1987-05-09 | 1987-11-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-11-07 | 1991-05-09 | 1991-11-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-11-07 | 1995-05-09 | 1995-11-08 | $7700.00 | Window Closed / Lapsed |