WO2017060921A1 - Matériau d'étanchéité de protection contre la corrosion - Google Patents

Matériau d'étanchéité de protection contre la corrosion Download PDF

Info

Publication number
WO2017060921A1
WO2017060921A1 PCT/IN2016/050338 IN2016050338W WO2017060921A1 WO 2017060921 A1 WO2017060921 A1 WO 2017060921A1 IN 2016050338 W IN2016050338 W IN 2016050338W WO 2017060921 A1 WO2017060921 A1 WO 2017060921A1
Authority
WO
WIPO (PCT)
Prior art keywords
composition
range
substrate
weight percentage
sealant
Prior art date
Application number
PCT/IN2016/050338
Other languages
English (en)
Inventor
Rajappa Tadepalli
Jahnavi D C
Pradeep KAPADIA
Sharmila Muthukrishnan
Original Assignee
Saint-Gobain Glass France
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Saint-Gobain Glass France filed Critical Saint-Gobain Glass France
Publication of WO2017060921A1 publication Critical patent/WO2017060921A1/fr
Priority to PH12018500598A priority Critical patent/PH12018500598A1/en

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
    • C09D5/08—Anti-corrosive paints
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D4/00—Coating compositions, e.g. paints, varnishes or lacquers, based on organic non-macromolecular compounds having at least one polymerisable carbon-to-carbon unsaturated bond ; Coating compositions, based on monomers of macromolecular compounds of groups C09D183/00 - C09D183/16

Definitions

  • the present disclosure relates in general to a sealant and, in particular, to a composition of the sealant for preventing corrosion.
  • metal substrates or substrates with metal coatings may be prone to corrosion due to exposure to atmosphere.
  • mirrors supplied in standard sizes may be cut into different sizes and shapes based on the end user requirement.
  • the mirrors without any frames around the edges may also be used.
  • the mirrors may be installed on plywood or other substrates of choice.
  • the edges of the mirror may be exposed to atmospheric conditions, e.g., moisture that may lead to corrosion of the edges of the mirror.
  • cutting of glass substrates may cause the coating layer to chip- off thereby exposing silver or other corresponding metals coated on the glass substrate to moisture and other environmental conditions.
  • a chipped off portion of the coated surface that is adjacent to the edge may also be prone to corrosion along with the edge of the mirror.
  • black spots may develop around the edges of the mirrors due to atmospheric corrosion.
  • the edges and the portion of the coated surface adjacent to these edges may need to be protected from corrosion.
  • Various other substrates may also be corroded which may reduce the life of a substrate.
  • U.S patent 5,389,301 is related to a lead-free anticorrosive formulation applied in layer form for the protection of metal films applied to transparent supports.
  • the formulation comprises a binder consisting of at least one resin selected from the group consisting of isomerized rubber, urethane oil, alkyd, modified alkyd, acrylic, phenol and epoxy resins; at least one melamine resin; a corrosion-inhibiting pigment consisting cyanoacetylurea; fillers; metal oxides; at least one solvent; and adhesion promoting additives.
  • Said formulation being particularly useful with mirrors, reflective surfaces and the like.
  • the above cited reference discloses a metal based composition that is applied to the entire surface of the mirror and hence does not have any targeted action over the edges and is less effective in preventing corrosion over the edges. Since the edges of the mirrors are more prone to corrosion it is necessary to protect the edges. Therefore, a need for a cost-effective and easy-to-use composition to prevent corrosion continues to exist.
  • compositions for preventing corrosion of a substrate a mixture, a random copolymer, a block copolymer, a homopolymer, a ter-polymer, or a blend of A, B and C, wherein
  • Rj H or CH 3 ;
  • R 2 C1-C4;
  • R 3 C1-C3; and
  • R4 C1-C2.
  • a composition for preventing corrosion of a substrate consist essentially of a mixture, a random copolymer, a block copolymer, a homopolymer, a ter-polymer, or a blend of 15% to 35% of a C1-C6 alkyl acrylate; 15% to 35% of a C1-C3 alkyl methacrylate; 0.1% to 10% of a C1-C4 alkyl acrylate; 0.1% to 2% of an adhesion promoting agent; and a medium.
  • a composition for preventing corrosion of a substrate includes a butyl acrylate having a weight percentage in a range of 15 to 35.
  • the composition also includes a methyl methacrylate having a weight percentage in a range of 15 to 35.
  • the composition further includes an ethyl acrylate having a weight percentage in a range of 0.1 to 10.
  • a glass substrate in another aspect of the present disclosure, includes a coated surface and a composition for preventing corrosion.
  • the corrosion preventing composition is disposed at least around an edge of the coated surface.
  • the composition includes a butyl acrylate having a weight percentage in a range of 15 to 35.
  • the composition also includes a methyl methacrylate having a weight percentage in a range of 15 to 35.
  • the composition further includes an ethyl acrylate having a weight percentage in a range of 0.1 to 10.
  • FIG. 1 illustrates a microscopic view of an exemplary substrate.
  • FIG. 2 illustrates a microscopic view of the surface of a substrate with a sealant applied thereon, according to an embodiment of the present disclosure.
  • the substrate may be a glass material.
  • the glass material may include a coated surface.
  • the coated surface may include Ag.
  • the coated surface may include one or more of Ag, Ni, Cu, Al, Ti and the like.
  • a suitable applicator may be used for applying the sealant on the substrate for preventing corrosion.
  • One such applicator is disclosed in an Indian patent application number 4954/CHE/2015 to Saint-Gobain Glass France and the same is incorporated herein as reference.
  • the sealant may be applied at least partly on each of the coated surface and the surfaces that are adjacent to the coated surface.
  • the substrate may be a solar panel, a magnetron coater product, a fiber-reinforcement, a plywood, a metal, a glass and the like.
  • the sealant may be used on any other substrates that are prone to corrosion.
  • composition of the sealant includes acrylates A, B and C, wherein
  • Rj may represent H. In another embodiment, Rj may represent CH 3 .
  • Rj of a compound A may be H while Rj of a compounds B and C may be CH 3 .
  • R2 may represent any of CI to C4 alkyl groups. Further, R2 may represent any of CI to C3 alkyl groups. Further, R3 may represent any of CI to C2 alkyl groups.
  • the composition may include at least one of a mixture, a random copolymer, a block copolymer, a homopolymer, a ter-polymer, and a blend of the compounds.
  • the composition may include a blend of a copolymer formed from A, B or a co-polymer formed from B, C.
  • the composition may include a blend of A, B and C.
  • the composition may include a blend or a mixture of a homopolymers of each of A, B and C.
  • the compound A may be a C1-C6 alkyl acrylate
  • the compound B may be a C1-C3 alkyl methacrylate
  • the compound C may be a C1-C4 alkyl acrylate.
  • a weight percentage of the compound A may be in a range of 15% to 35%. In another embodiment, the weight percentage of the compound A may be in a range of 10% to 30%. In an embodiment, a weight percentage of the compound B may be in a range of 15% to 35%. In another embodiment, the weight percentage of the compound B may be in a range of 10% to 30 %. In an embodiment, a weight percentage of the compound C may be in a range of 0.1% to 10%. In another embodiment, the weight percentage of the compound C may be in a range of 0.2% to 8%.
  • the composition may include a butyl acrylate, a methyl methacrylate and an ethyl acrylate.
  • the weight percentage of butyl acrylate may be in a range of 15% to 13%.
  • the weight percentage of methyl methacrylate may be in a range of 15% to 13%.
  • the weight percentage of methyl methacrylate may be in a range of 0.1% to 10%.
  • the composition may further include a medium.
  • the medium may be water.
  • the medium may include at least one of water, alcohol, ether, ester or hydrocarbon based compounds.
  • a weight percentage of the medium may be in the range of about 40% to 60%.
  • the composition may also include an adhesion promoting agent.
  • the adhesion promoting agent may have a weight percentage in a range of about 0.1% to 2% of the composition.
  • the adhesion promoting agent may be a silane based adhesion promoter e.g., Epoxy silane (3- Glycidyloxypropyl) trimethoxysilane.
  • silane based adhesion promoter e.g., Epoxy silane (3- Glycidyloxypropyl) trimethoxysilane.
  • Other types of suitable adhesion promoting agents may also be contemplated for use in the sealant.
  • the sealant with the above described compositions may be hydrophobic in nature thereby preventing moisture to pass therethrough. Moreover, the sealant may have a contact angle of water with respect to air in a range of 75 to 95 degrees.
  • edges of a mirror are coated with the sealant.
  • the hydrophobic nature of the sealant may be measured by measuring the contact angle on the edges of the mirror through sessile drop method. Table 1 gives the details of contact angles for different weight percentages of the components of the sealant composition.
  • the substrate has a contact angle of 46 without the application of the sealant.
  • the substrate without the sealant may come in contact with moisture from the atmosphere and may be prone to corrosion.
  • a transparent film resulting from the sealant composition is found to have a contact angle of water with respect to air greater than 75 degrees thereby exhibiting hydrophobicity.
  • the hydrophobicity may enable the sealant to prevent water seepage.
  • corrosion of the substrate that may occur with exposure to moisture may be prevented with the use of the sealant.
  • by adding a suitable adhesion promoting agent better contact angles for the transparent film may be obtained.
  • the corrosion on the substrate may be delayed thereby improving a life of the corresponding substrate.
  • the sealant of the present disclosure forms a solid transparent film at room temperature. As such, upon application of the sealant on the substrate, aesthetic features of the substrate may not be affected.
  • the sealant was applied on a substrate, e.g., mirror and the mirror was subjected to various tests to evaluate the performance of the sealant.
  • Table 2 shows the composition of the sealant.
  • FIG. 1 shows an image of the mirror without the sealant.
  • FIG. 2 shows an image of the mirror with the composition applied. As can be seen from the images in FIG. 1 & FIG. 2, there was a difference between the mirror with the sealant and the mirror without the sealant.
  • a maximum penetration level for each of the mirrors was measured as an indication of corrosion level.
  • the corrosion levels in both the images were measured using optical microscopy.
  • the maximum penetration level was found to be 2452 micrometers.
  • the sealant with the composition applied thereon the maximum penetration level was found to be only 761 micrometers.
  • the substrate coated with the sealant composition exhibited a meagre corrosion percentage of approximately around 30 % when compared with a substrate without the sealant composition (that exhibited a corrosion percentage of about 100 %).
  • the sealant was coated on the substrate upto a thickness of 20 microns. The coating was allowed to dry for about 2 hours at room temperature. The weight of the coated substrate was measured accurately upto 3 decimals. Further, using a Taber Abraser, the substrate was subjected to a number of abrasion cycles. Thereafter, the weight of the substrate may be measured. Further, it was determined that there is no substantial weight loss between the substrates before and the after subjecting the substrate upto 200 cycles. With such a test, it was found that the sealant was considerably resistant to abrasion and capable of withstanding upto 200 abrasion cycles for the mentioned thickness. Moreover, by adding the adhesion promoting agent, a better adhesion resistance was be obtained.
  • Adhesion Test A peel off test was performed on the substrate coated with the sealant to evaluate the durability. A tape was attached on the sealant uniformly and then pulled off. The substrate was then checked for any sealant removal and also the tape was checked for traces of the sealant stuck on the tape. However, the sealant of the present disclosure was found to withstand the peel off test without any substantial removal of the sealant from the substrate along with the tape.
  • the sealant of the present disclosure can use water as a medium instead of organic solvents thereby reducing the overall cost of the composition. Further, the sealant may dry off and form a solid film on the substrate at room temperature. As such, no extra curing or increased temperature may be needed with use of the sealant of the present disclosure.
  • the sealant may be used for preventing corrosion of mirrors.
  • the edges adjacent to the coated surface of the mirror and, a portion of the coated surface around the edge may be prone to corrosion.
  • the sealant may be applied on surfaces around the edges that are adjacent to the coated surface of the mirror thereby delaying the process of corrosion of the mirror.
  • the terms “comprises,” “comprising,” “includes,” “including,” “has,” “having” or any other variation thereof, are intended to cover a non-exclusive inclusion.
  • a method, article, or apparatus that comprises a list of features is not necessarily limited only to those features but may include other features not expressly listed or inherent to such method, article, or apparatus.
  • "or” refers to an inclusive-or and not to an exclusive-or. For example, a condition A or B is satisfied by any one of the following: A is true (or present) and B is false (or not present), A is false (or not present) and B is true (or present), and both A and B are true (or present).

Abstract

La présente invention concerne une composition comprenant des acrylates permettant de prévenir la corrosion de bord sur des substrats. L'invention concerne également un substrat de verre comprenant une surface revêtue et une composition placée au moins autour d'un bord de la surface revêtue.
PCT/IN2016/050338 2015-10-06 2016-10-05 Matériau d'étanchéité de protection contre la corrosion WO2017060921A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PH12018500598A PH12018500598A1 (en) 2015-10-06 2018-03-20 Corrosion protective sealant

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IN5344/CHE/2015 2015-10-06
IN5344CH2015 2015-10-06

Publications (1)

Publication Number Publication Date
WO2017060921A1 true WO2017060921A1 (fr) 2017-04-13

Family

ID=58488125

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IN2016/050338 WO2017060921A1 (fr) 2015-10-06 2016-10-05 Matériau d'étanchéité de protection contre la corrosion

Country Status (2)

Country Link
PH (1) PH12018500598A1 (fr)
WO (1) WO2017060921A1 (fr)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20080011419A1 (en) * 2004-07-29 2008-01-17 3M Innovative Properties Company (meth)acrylate block copolymer pressure sensitive adhesives
US20110017202A1 (en) * 2007-12-21 2011-01-27 Agc Glass Europe Solar energy reflector
US20140377511A1 (en) * 2012-01-31 2014-12-25 3M Innovative Properties Company Methods for sealing the edges of multi-layer articles

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20080011419A1 (en) * 2004-07-29 2008-01-17 3M Innovative Properties Company (meth)acrylate block copolymer pressure sensitive adhesives
US20110017202A1 (en) * 2007-12-21 2011-01-27 Agc Glass Europe Solar energy reflector
US20140377511A1 (en) * 2012-01-31 2014-12-25 3M Innovative Properties Company Methods for sealing the edges of multi-layer articles

Also Published As

Publication number Publication date
PH12018500598A1 (en) 2018-10-01

Similar Documents

Publication Publication Date Title
EP2420543B1 (fr) Composition d'apprêt pour articles optiques, et article optique
CA2093962C (fr) Composition de tain
TWI690570B (zh) 防污性組成物、防污性薄片、及防污性薄片之製造方法
EP3228672B2 (fr) Composition de revêtement et produit optique présentant une couche de revêtement réalisée à partir de ladite composition de revêtement
US5096785A (en) Mirror and method of manufacturing same
TW201639638A (zh) 塗布製品及其製造方法
JP5103111B2 (ja) 塗装鋼板
WO2017060921A1 (fr) Matériau d'étanchéité de protection contre la corrosion
CN111479886A (zh) 涂覆有防腐蚀保护层的基材
US5075134A (en) Mirrorback coating
US5143789A (en) Mirrorback coating
CN101573230B (zh) 赋予具有金属层的多层窗膜耐腐蚀性的方法
CN107667078A (zh) 具有改善的耐用性的镜子
KR101432170B1 (ko) 크롬프리 전처리제 및 이를 이용한 도장강판 제조방법
KR20190062944A (ko) 내식성이 우수한 도장강판 및 그 제조방법
US5248331A (en) Mirror back coating
KR101946804B1 (ko) 내스크래치성 프린팅 소재
KR101571834B1 (ko) 기능성 코팅 조성물 및 그 제조방법
JP6760489B2 (ja) 塗膜の耐傷付き性及び耐吸湿性が良好で端面赤錆耐食性に優れるプレコート鋼板
KR20210013844A (ko) 페인트보호필름용 코팅층 조성물, 이의 경화물인 페인트보호필름용 코팅층, 및 코팅층을 포함하는 페인트보호필름
KR101626618B1 (ko) 트리아세틸 셀룰로오스 필름의 하드 코팅용 조성물, 이를 포함하는 하드 코팅 필름 및 편광 필름
KR101536916B1 (ko) 드럼용 냉연칼라강판 및 이를 이용한 드럼 제조 방법
KR102152992B1 (ko) 부식 방지 거울
US11078369B2 (en) Corrosion-resistance improved powder paint for aluminum wheels
KR101762527B1 (ko) 클리어 도장 스테인리스 강판

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 16853216

Country of ref document: EP

Kind code of ref document: A1

WWE Wipo information: entry into national phase

Ref document number: 12018500598

Country of ref document: PH

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 16853216

Country of ref document: EP

Kind code of ref document: A1