US4906695A
Expired / Lapsed
US
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Pressure-sensitive adhesives containing an alkoxy-functional silicon compound
Assignee: Dow Silicones Corp
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Filing: 1988-07-08
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Granted: 1990-03-06
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Expires: 2008-07-08
Abstract
Abstract The invention relates to a method of contacting two components to form a pressure-sensitive adhesive (PSA) construction, wherein the first component comprises a conventional PSA modified with an alkoxy-functional silicon compound and the second component comprises the same PSA modified with a cure agent for the alkoxy-functional silicon compound. The method provides improved adhesive bond strength over the unmodified PSA which generally increases with time.
Inventors
- 👤 John D. Blizzard
- 👤 Terence J. Swihart
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 12:25
CPC Classifications
C; C09; C09J; C09J201/00; C08; C08L; C08L2666/00; C08L2666/28; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31536
Claims Analysis
Total Claims: 26
Claim 1
Independent Claim
107 words
A method for forming a pressure-sensitive adhesive construction comprising: contacting a first component comprising (I) a pressure-sensitive adhesive; and (II) an alkoxy-functional silicon compound selected from the group consisting of (a) at least one alkoxysilane having the general formula R'.sub.g Si(OR).sub.4-g in which R' is a monovalent hydrocarbon group having 1 to 10 carbon atoms, R is an alkyl radicals having 1 to 4 carbon atoms and g can have an average value of 0 to 3 inclusive, and (b) a partially hydrolyzed condensate of said alkoxysilane (a), with a second component comprising (III) said pressure-sensitive adhesive; and (IV) a cure agent for said alkoxy-functional silicon compound.
Claim 2
Independent Claim
107 words
A method for forming a pressure-sensitive adhesive construction comprising: contacting a first component comprising (I) a pressure-sensitive adhesive; and (II) an alkoxy-functional silicon compound selected from the group consisting of (a) at least one alkoxysilane having the general formula R'.sub.g Si(OR).sub.4-g in which R' is a monovalent hydrocarbon group having 1 to 10 carbon atoms, R is an alkyl radicals having 1 to 4 carbon atoms and g can have an average value of 0 to 3 inclusive, and (b) a partially hydrolyzed condensate of said alkoxysilane (a), with a second component comprising (III) said pressure-sensitive adhesive; and (IV) a cure agent for said alkoxy-functional silicon compound.
Claim 3
Dependent Claim
29 words
The method of claim 1, wherein said pressure-sensitive adhesive is selected from those based on natural, butyl, silicone, acrylic, styrene-butadiene, polyisobutylene, isoprene, isoprene-isobutylene, chloroprene, polyvinylether, chlorinated or polyurethane rubber.
Claim 4
Dependent Claim
30 words
The method of claim 1, wherein said alkoxy-functional silicon compound (II) is said alkoxysilane (a) in which R' is an alkyl radical having 1-8 carbon atoms and g is one.
Claim 5
Dependent Claim
11 words
The method of claim 3, wherein R has 1-3 carbon atoms.
Claim 6
Dependent Claim
18 words
The method of claim 1, wherein R has 1-3 carbon atoms and g has a value of zero.
Claim 7
Dependent Claim
24 words
The method of claim 5, wherein said pressure-sensitive adhesive is based on a rubber selected from the group consisting of acrylic and styrene-butadiene polymers.
Claim 8
Dependent Claim
24 words
The method of claim 4, wherein said pressure-sensitive adhesive is based on a rubber selected from the group consisting of acrylic and styrene-butadiene polymers.
Claim 9
Dependent Claim
35 words
The method of claim 1, wherein said alkoxy-functional silicon compound (II) is said partially hydrolyzed condensate of said alkoxysilane (a) consisting essentially of an alkyl polysilicate in which the alkyl radicals have 1-3 carbon atoms.
Claim 10
Dependent Claim
21 words
The method of claim 8, wherein said alkyl polysilicate is ethyl polysilicate having a silica content of about 40 weight percent.
Claim 11
Dependent Claim
24 words
The method of claim 8, wherein said pressure-sensitive adhesive is based on a rubber selected from the group consisting of acrylic and styrene-butadiene polymers.
Claim 12
Dependent Claim
11 words
The pressure-sensitive adhesive construction prepared by the method of claim 1.
Claim 13
Dependent Claim
11 words
The pressure-sensitive adhesive construction prepared by the method of claim 2.
Claim 14
Dependent Claim
11 words
The pressure-sensitive adhesive construction prepared by the method of claim 3.
Claim 15
Dependent Claim
11 words
The pressure-sensitive adhesive construction prepared by the method of claim 5.
Claim 16
Dependent Claim
11 words
The pressure-sensitive adhesive construction prepared by the method of claim 8.
Claim 17
Dependent Claim
116 words
A composition comprising: (I) a pressure-sensitive adhesive selected from the group consisting of those based on natural, butyl, acrylic, styrene-butadiene, polyisobutylene, isoprene, isoprene-isobutylene, chloroprene, polyvinylether, chlorinated and polyurethane rubber; and (II) from about 0.05 to 25 parts by weight per 100 parts by weight of said pressure-sensitive adhesive of an alkoxy-functional silicon compound selected from the group consisting of (a) at least one alkoxysilane having the general formula R'.sub.g Si(OR).sub.4-g in which R' is a monovalent hydrocarbon group having 1 to 10 carbon atoms, R is an alkyl radical having 1 to 4 carbon atoms and g has an average value of 0 to 3 inclusive, and (b) a partially hydrolyzed condensate of said alkoxysilane (a).
Claim 18
Dependent Claim
116 words
A composition comprising: (I) a pressure-sensitive adhesive selected from the group consisting of those based on natural, butyl, acrylic, styrene-butadiene, polyisobutylene, isoprene, isoprene-isobutylene, chloroprene, polyvinylether, chlorinated and polyurethane rubber; and (II) from about 0.05 to 25 parts by weight per 100 parts by weight of said pressure-sensitive adhesive of an alkoxy-functional silicon compound selected from the group consisting of (a) at least one alkoxysilane having the general formula R'.sub.g Si(OR).sub.4-g in which R' is a monovalent hydrocarbon group having 1 to 10 carbon atoms, R is an alkyl radical having 1 to 4 carbon atoms and g has an average value of 0 to 3 inclusive, and (b) a partially hydrolyzed condensate of said alkoxysilane (a).
Claim 19
Dependent Claim
30 words
The composition of claim 16, wherein said alkoxy-functional silicon compound (II) is said alkoxysilane (a) in which R' is an alkyl radical having 1-8 carbon atoms and g is one.
Claim 20
Dependent Claim
11 words
The composition of claim 17, wherein R has 1-3 carbon atoms.
Claim 21
Dependent Claim
18 words
The composition of claim 16, wherein R has 1-3 carbon atoms and g has a value of zero.
Claim 22
Dependent Claim
24 words
The composition of claim 19, wherein said pressure-sensitive adhesive is based on a rubber selected from the group consisting of acrylic and styrene-butadiene polymers.
Claim 23
Dependent Claim
24 words
The composition of claim 18, wherein said pressure-sensitive adhesive is based on a rubber selected from the group consisting of acrylic and styrene-butadiene polymers.
Claim 24
Dependent Claim
35 words
The composition of claim 16, wherein said alkoxy-functional silicon compound (II) is said partially hydrolyzed condensate of said alkoxysilane (a) consisting essentially of an alkyl polysilicate in which the alkyl radicals have 1-3 carbon atoms.
Claim 25
Dependent Claim
21 words
The composition of claim 22, wherein said alkyl polysilicate is ethyl polysilicate having a silica content of about 40 weight percent.
Claim 26
Dependent Claim
24 words
The composition of claim 22, wherein said pressure-sensitive adhesive is based on a rubber selected from the group consisting of acrylic and styrene-butadiene polymers.
References Cited (Backward Citations)
US2814601A
Cited
US3707518A
Cited
US3644245A
Cited
US3657379A
Cited
US4151319A
Cited
US4125504A
Cited
JPS565867A
Cited
DE3219442A1
Cited
US4463115A
Cited
US4593068A
Cited
US4500584A
Cited
US4581281A
Cited
US4665127A
Cited
WO1987003477A1
Cited
US4693935A
Cited
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