US5045361A
Expired / Lapsed
US
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Process of preparation for the surface protection of zinc against white rust
Assignee: PRODUITS CHIMIQUES AUXILIARES ET DE SYNTHESE (PCAS) A CORP OF FRANCE
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Filing: 1988-10-14
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Granted: 1991-09-03
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Expires: 2008-10-14
Abstract
Abstract A process for producing an acrylic and/or methacrylic polymer based preparation for the surface treatment of zinc consists in polymerizing at least one (meth)acrylic acid and at least one (meth)acrylate in a mixture of organic cosolvents. The preparation is then formed from the resultant copolymer in the cosolvents by dilution in a quantity of water and preferably an excess of water with respect to the cosolvents in the polymerization stage.
Inventors
- 👤 Jean P. Kerherve
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 07:39
CPC Classifications
C; C08; C08J; C08J3/00; C08J3/02; C08J3/03; C08J3/07; C09; C09D; C09D133/00; C09D133/04; C09D133/06; C09D133/062; C09D133/064; C23; C23C; C23C2/00; C23C2/26; C08J2333/00; C08J2333/04; C08J2333/06
Claims Analysis
Total Claims: 30
Claim 1
Independent Claim
97 words
A process for surface protecting zinc against white rust which comprises: producing a polymeric preparation by polymerizing at least one (meth)acrylic acid and at least one (meth)acrylate in a mixture of organic cosolvents; subsequently diluting said polymeric preparation with a quantity of water by weight which is greater than the quantity by weight of said organic cosolvents employed in said polymerization state, to form a solution of a protective preparation; and applying said solution of said protective preparation to the surface of the zinc to form a film having a thickness of between 2 and 20 microns.
Claim 2
Dependent Claim
97 words
A process for surface protecting zinc against white rust which comprises: producing a polymeric preparation by polymerizing at least one (meth)acrylic acid and at least one (meth)acrylate in a mixture of organic cosolvents; subsequently diluting said polymeric preparation with a quantity of water by weight which is greater than the quantity by weight of said organic cosolvents employed in said polymerization state, to form a solution of a protective preparation; and applying said solution of said protective preparation to the surface of the zinc to form a film having a thickness of between 2 and 20 microns.
Claim 3
Dependent Claim
91 words
A process for surface protecting zinc against white rust, comprising applying to the zinc surface, at a temperature of about 250° C., a protective preparation produced by polymerizing at least one (meth)acrylic acid and at least one (meth)acrylate in a mixture of organic solvents to form a terpolymer preparation comprising lauryl (methy)acrylate moieties; and subsequently diluting said terpolymer preparation with a quantity of water by weight which is greater than the quantity by weight of said organic solvents employed in said polymerization stage to form a solution of the terpolymer preparation.
Claim 4
Dependent Claim
91 words
A process for surface protecting zinc against white rust, comprising applying to the zinc surface, at a temperature of about 250° C., a protective preparation produced by polymerizing at least one (meth)acrylic acid and at least one (meth)acrylate in a mixture of organic solvents to form a terpolymer preparation comprising lauryl (methy)acrylate moieties; and subsequently diluting said terpolymer preparation with a quantity of water by weight which is greater than the quantity by weight of said organic solvents employed in said polymerization stage to form a solution of the terpolymer preparation.
Claim 5
Dependent Claim
95 words
A process for surface protecting zinc against white rust, comprising applying to the zinc surface, at a temperature of about 250° C., a protective preparation produced by polymerizing at least one (meth)acrylic acid and at least one (meth)acrylate in a mixture of organic solvents to form a terpolymer preparation of butyl (meth)acrylate, lauryl (meth)acrylate and (meth)acrylic acid and subsequently diluting said terpolymer preparation with a quantity of water by weight which is greater than the quantity by weight of said organic solvents employed in said polymerization stage to form a solution of said terpolymer preparation.
Claim 6
Dependent Claim
95 words
A process for surface protecting zinc against white rust, comprising applying to the zinc surface, at a temperature of about 250° C., a protective preparation produced by polymerizing at least one (meth)acrylic acid and at least one (meth)acrylate in a mixture of organic solvents to form a terpolymer preparation of butyl (meth)acrylate, lauryl (meth)acrylate and (meth)acrylic acid and subsequently diluting said terpolymer preparation with a quantity of water by weight which is greater than the quantity by weight of said organic solvents employed in said polymerization stage to form a solution of said terpolymer preparation.
Claim 7
Dependent Claim
20 words
The process of claim 1, wherein the film is removed from the zinc by reaction with a weak alkaline detergent.
Claim 8
Dependent Claim
30 words
The process according to claim 1 wherein said (meth)acrylate is a C 1 -C 22 alkyl (meth)acrylate to produce the preparation contains an ammonia solution or a morpholine based solution.
Claim 9
Dependent Claim
20 words
The process according to claim 1 wherein the water added to produce the protective preparation contains an aqueous amino solution.
Claim 10
Dependent Claim
24 words
The process according to claim 1 wherein the water added to produce the protective preparation contains an ammonia solution or a morpholine based solution.
Claim 11
Dependent Claim
25 words
The process according to claim 1 wherein the polymerization stage produces a copolymer having an acid number of 50 to 150 mg KOH per gram.
Claim 12
Dependent Claim
25 words
The process according to claim 1 wherein the polymerization stage produces a copolymer having an acid number of 90 to 120 mg KOH per gram.
Claim 13
Dependent Claim
27 words
The process according to claim 1 wherein the polymerization stage produces a copolymer having a number average molecular weight Mn of between 2 000 and 20 000.
Claim 14
Dependent Claim
27 words
The process according to claim 1 wherein the polymerization stage produces a copolymer having a number average molecular weight Mn of between 3 000 and 5 000.
Claim 15
Dependent Claim
17 words
The process according to claim 2 wherein said (meth)acrylate is a C 1 -C 22 alkyl (meth)acrylate.
Claim 16
Dependent Claim
15 words
The process according to claim 2 wherein the preparation once formed is a ready-to-use preparation.
Claim 17
Dependent Claim
20 words
The process according to claim 2 wherein the water added to produce the protective preparation contains an aqueous amino solution.
Claim 18
Dependent Claim
24 words
The process according to claim 2 wherein the water added to produce the protective preparation contains an ammonia solution or a morpholine based solution.
Claim 19
Dependent Claim
25 words
The process according to claim 2 wherein the polymerization stage produces a copolymer having an acid number of 50 to 150 mg KOH per gram.
Claim 20
Dependent Claim
25 words
The process according to claim 2 wherein the polymerization stage produces a copolymer having an acid number of 90 to 120 mg KOH per gram.
Claim 21
Dependent Claim
27 words
The process according to claim 2 wherein the polymerization stage produces a copolymer having a number average molecular weight Mn of between 2 000 and 20 000.
Claim 22
Dependent Claim
27 words
The process according to claim 2 wherein the polymerization stage produces a copolymer having a number average molecular weight Mn of between 3 000 and 5 000.
Claim 23
Dependent Claim
17 words
The process according to claim 3 wherein said (meth)acrylate is a C 1 -C 22 alkyl (meth)acrylate.
Claim 24
Dependent Claim
16 words
The process according to claim 3 wherein the protective preparation once formed is a ready-to-use preparation.
Claim 25
Dependent Claim
19 words
The process according to claim 3 wherein the water added to produce the preparation contains an aqueous amino solution.
Claim 26
Dependent Claim
19 words
The process according to claim 3 wherein the protective preparation contains an ammonia solution or a morpholine based solution.
Claim 27
Dependent Claim
25 words
The process according to claim 3 wherein the polymerization stage produces a copolymer having an acid number of 50 to 150 mg KOH per gram.
Claim 28
Dependent Claim
25 words
The process according to claim 3 wherein the polymerization stage produces a copolymer having an acid number of 90 to 120 mg KOHY per gram.
Claim 29
Dependent Claim
27 words
The process according to claim 3 wherein the polymerization stage produces a copolymer having a number average molecular weight Mn of between 2 000 and 20 000.
Claim 30
Dependent Claim
27 words
The process according to claim 3 wherein the polymerization stage produces a copolymer having a number average molecular weight Mn of between 3 000 and 5 000.
References Cited (Backward Citations)
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