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US4268549A Expired / Lapsed US ⏱️ 0.0 years remaining

Synthetic resin powder and coating agents containing the same

Assignee: Roehm GmbH Darmstadt
•
Filing: 1979-07-11
•
Granted: 1981-05-19
•
Expires: 1999-07-11
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Abstract

Abstract What is disclosed is a synthetic resin powder of latex particles having an average particle size between 1 micron and 5 microns, which particles can be partially or completely loosely aggregated to form larger particles, said synthetic resin being a cross-linked copolymer of 75 to 99.5 percent by weight of a monomer mixture of methyl methacrylate and isobutyl methacrylate in a weight ratio of 1:3 to 3:1, 0.5 to 10 percent by weight of a cross-linking comonomer having at least two polymerizable double bonds, and 0 to 24.5 percent by weight of a further different ethylenically-unsaturated comonomer copolymerizable therewith, a coating agent containing a binder dissolved or dispersed therein together with such a resin powder, and a method of coating using such a coating agent to give coatings wherein the presence of the resin powder prevents blocking of the coatings without undue loss of luster therein.

Inventors

  • 👤 Herbert Fink
  • 👤 Norbert Suetterlin
  • 👤 Horst Dinklage
  • 👤 Willi Tilch

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-25 20:10
CPC Classifications
C; C08; C08J; C08J3/00; C08J3/12; C09; C09D; C09D133/00; C09D133/04; C09D133/06; C09D133/10; C09D7/00; C09D7/40; C09D7/65; C08J2333/00; C08J2333/04; C08J2333/06; C08J2333/10; C08L; C08L2205/00; C08L2205/02; C08L33/00; C08L33/04; C08L33/06; C08L33/10; Y; Y10; Y10S; Y10S428/00; Y10S428/904; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31855; Y10T428/31909; Y10T428/31928

Claims Analysis

Total Claims: 8
Claim 1
Independent Claim 95 words
A synthetic resin powder of latex particles having an average particle size between 1 micron and 5 microns, which particles can be partially or completely loosely aggregated to form larger particles, said synthetic resin being a cross-linked copolymer of 75 to 99.5 percent by weight of a monomer mixture of methyl methacrylate and isobutyl methacrylate in a weight ratio of 1:3 to 3:1, 0.5 to 10 percent by weight of a cross-linking comonomer having at least two polymerizable double bonds, and 0 to 24.5 percent by weight of a further different ethylenically-unsaturated comonomer copolymerizable therewith.
Claim 2
Dependent Claim 95 words
A synthetic resin powder of latex particles having an average particle size between 1 micron and 5 microns, which particles can be partially or completely loosely aggregated to form larger particles, said synthetic resin being a cross-linked copolymer of 75 to 99.5 percent by weight of a monomer mixture of methyl methacrylate and isobutyl methacrylate in a weight ratio of 1:3 to 3:1, 0.5 to 10 percent by weight of a cross-linking comonomer having at least two polymerizable double bonds, and 0 to 24.5 percent by weight of a further different ethylenically-unsaturated comonomer copolymerizable therewith.
Claim 3
Dependent Claim 23 words
A coating agent containing a volatile liquid component, a film-forming binder, and a synthetic resin powder of latex particles as in claim 1.
Claim 4
Dependent Claim 14 words
A coating agent as in claim 2 wherein said binder is an acrylic resin.
Claim 5
Dependent Claim 31 words
A coating agent as in claim 2 wherein said binder is present in the form of a solution in the liquid component and said latex particles are distributed in the solution.
Claim 6
Dependent Claim 22 words
A coating agent as in claim 2 wherein said liquid component is water and said binder is an emulsion polymer dispersed therein.
Claim 7
Dependent Claim 42 words
A method for the preparation of a non-blocking and non-tacky coating on a solid substrate, which method comprises coating said substrate with a coating agent as in claim 2 and evaporating the volatile component thereof to form a film on the substrate.
Claim 8
Dependent Claim 14 words
A method as in claim 6 wherein said substrate comprises a plasticized polyvinyl chloride.

References Cited (Backward Citations)

GB734181A Cited
GB830311A Cited
DE1297266B Cited
US3786013A Cited
US3876578A Cited
US4168255A Cited
US4126594A Cited
US4166882A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1984-05-18 1984-11-17 1985-05-19 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1988-05-18 1988-11-17 1989-05-19 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1992-05-18 1992-11-17 1993-05-19 $7700.00 Window Closed / Lapsed

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