US4277538A
Expired / Lapsed
US
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Method of manufacturing laminated safety glass
Assignee: Huels Troisdorf AG
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Filing: 1980-01-24
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Granted: 1981-07-07
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Expires: 2000-01-24
Abstract
Abstract A laminated safety glass comprising a layer of a silicate glass, to which is bonded a layer of a plasticized plastic sheet containing polyvinyl chloride, said laminate containing therein an organofunctional silane and a process for preparing such laminated safety glass by unilateral or bilateral bonding of one or more silicate glass sheets with a plasticized polyvinyl chloride plastic film at an elevated temperature wherein the bonding is effected with the aid of a silicon-organo-functional silane and the bonding is effected at 120 DEG -200 DEG C.
Inventors
- 👤 Rolf Beckmann
- 👤 Wilhelm Knackstedt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 14:56
CPC Classifications
B; B32; B32B; B32B17/00; B32B17/06; B32B17/10; B32B17/10005; B32B17/1055; B32B17/10761; B32B17/10009; B32B17/10036; B32B17/10045; B32B17/10688; B32B38/00; B32B38/0036; B32B38/004; B32B2605/00; B32B2605/006; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31551; Y10T428/31609; Y10T428/31612; Y10T428/31645; Y10T428/31649; Y10T428/31652; Y10T428/31663
Claims Analysis
Total Claims: 37
Claim 1
Independent Claim
94 words
In a method for manufacturing a laminated safety glass wherein a pair of silicate glass sheets are bonded to opposed sides of a plasticized plastic film at an elevated temperature, the improvement wherein said plasticized plastic film is a plasticized polyvinyl chloride containing film of a high molecular weight vinyl chloride homopolymer, copolymer or graft polymer and said plasticized film is bonded to said pair of silicate glass sheets with a bonding agent consisting essentially of a functional silane, the bonding being performed at a temperature in the range of 120° to 200° C.
Claim 2
Dependent Claim
94 words
In a method for manufacturing a laminated safety glass wherein a pair of silicate glass sheets are bonded to opposed sides of a plasticized plastic film at an elevated temperature, the improvement wherein said plasticized plastic film is a plasticized polyvinyl chloride containing film of a high molecular weight vinyl chloride homopolymer, copolymer or graft polymer and said plasticized film is bonded to said pair of silicate glass sheets with a bonding agent consisting essentially of a functional silane, the bonding being performed at a temperature in the range of 120° to 200° C.
Claim 3
Dependent Claim
27 words
A process according to claim 1 wherein the plasticized plastic film is a polyvinylchloride-containing film containing polymers miscible therewith which polymers are not made from vinyl chloride.
Claim 4
Dependent Claim
24 words
A process according to claim 1 wherein the polyvinyl chloride polymer of the plasticized plastic film has a K value of 50 to 80.
Claim 5
Dependent Claim
24 words
A process according to claim 3 wherein the polyvinyl chloride polymer of the plasticized plastic film has a K value of 60 to 75.
Claim 6
Dependent Claim
20 words
A process according to claim 1 wherein the plasticized plastic film has a Shore hardness A of 40 to 98.
Claim 7
Dependent Claim
20 words
A process according to claim 5 wherein the plasticized plastic film has a Shore hardness A of 50 to 95.
Claim 8
Dependent Claim
46 words
A process according to claim 1 wherein the functional silane is a silicon-organofunctional alkoxy silane containing an amino and/or imino or epoxy group, one or both of the hydrogen atoms of the amino group, if present, being replaceable by an amino, hydroxy alkyl or polyamino moiety.
Claim 9
Dependent Claim
105 words
A process according to claim 7 wherein the silicon-organofunctional silane has the general formula ##STR6## in which R is a C 1 to C 10 alkyl moiety which can be interrupted by oxygen atoms, R''' is an alkyl moiety of 1 to 8 carbon atoms, A is a straight-chain or branched alkylene moiety of 1 to 8 carbon atoms which can be interrupted by oxygen bridges, m=1 or 2 or 3, n=1 or 2 or 3, R', when m=1, represents H and/or R"-NH 2 or R"OH (R" being an alkylene moiety of 2 to 4 carbon atoms), and, when m=2, R' represents H or ##STR7##
Claim 10
Dependent Claim
44 words
A process according to claim 7 wherein the silicon-organofunctional silane is one having the formula ##STR8## in which R, R''', A and n have the same meaning as in Formula I and R' is H or CH 3 or C 2 H 5 .
Claim 11
Dependent Claim
42 words
A process according to claim 1 wherein said silane is dissolved in a solvent and is applied to at least one of the adjoining surfaces of the layers to be bonded and, prior to bonding, the surface is freed of said solvent.
Claim 12
Dependent Claim
21 words
A process according to claim 10 wherein the silane concentration in the solution ranges from 0.01 to 5 percent by weight.
Claim 13
Dependent Claim
22 words
A process according to claim 11 wherein the concentration of silane in the solution is from 0.1 to 3 percent by weight.
Claim 14
Dependent Claim
60 words
A process according to claim 1 wherein said silane is employed in the form of a solution containing a lacquer binding agent and is applied to at least one of the adjoining surfaces to be bonded and prior to bonding the surface is freed of said solvent, the bonding being carried out at a temperature of 120° to 150° C.
Claim 15
Dependent Claim
17 words
A process according to claim 1 wherein the silane is homogeneously distributed within the plasticized plastic film.
Claim 16
Dependent Claim
19 words
A process according to claim 14 wherein said film contains 0.1 to 5 percent by weight of said silane.
Claim 17
Dependent Claim
16 words
A process according to claim 15 wherein said film contains 0.5 to 3 weight percent silane.
Claim 18
Dependent Claim
42 words
A process according to claim 7 wherein said silane has the formula NH.sub.2 --(CH.sub.2).sub.n --Si(OR).sub.3 III wherein n=2 to 6 and R=a branched or unbranched C 1 to C 8 alkyl group which can be interrupted by oxygen atoms in the chain.
Claim 19
Dependent Claim
21 words
A process according to claim 5 wherein said silane is selected from the group consisting of γ-aminopropyltrialkoxysilane, γ-aminoethyltrialkoxysilane, β-aminoethyl-γ-oxypropylmethyldialkoxysilane and polyaminotrialkoxysilane.
Claim 20
Dependent Claim
59 words
A process according to claim 7 wherein said silane has the formula HN[CH.sub.2 --CH.sub.2 --CH.sub.2 --Si(OR).sub.3 ].sub.2 IV wherein R is a branched or unbranched C 1 -C 8 alkyl group which can be interrupted by oxygen atoms in the chain and the hydrogen atoms of the amino group can be replaced by an amino or polyamino alkyl moiety.
Claim 21
Dependent Claim
73 words
A process according to claim 1 wherein said silane is a silicon-functional silane and has the formula R.sub.n --Si--R'.sub.4-n wherein each R radical represents the same or different saturated straight or branched alkyl moiety of 1 to 10 carbon atoms, R' represents a halogen or identical or different saturated alkoxy group of 1 to 8 carbon atoms which can be interrupted by a hetero atom and n is equal to 1 to 3.
Claim 22
Dependent Claim
26 words
A process according to claim 20 wherein said silane is selected from the group consisting of propyltriethoxysilane, propyltrimethoxysilane, isopropyldimethoxyethoxysilane, n-butyl triethoxysilane, isobutyltriethoxysilane, n-butyl trimethoxysilane and isobutyltrimethoxysilane.
Claim 23
Dependent Claim
29 words
A laminate comprising a pair of silicate glass sheets bonded to a plasticized plastic sheet of a vinyl chloride containing polymer, said plasticized sheet containing a functional silane therein.
Claim 24
Dependent Claim
29 words
A laminate comprising a pair of silicate glass sheets bonded to a plasticized plastic sheet of a vinyl chloride containing polymer, said plasticized sheet containing a functional silane therein.
Claim 25
Dependent Claim
26 words
A laminate according to claim 22 wherein said functional silane is disposed at the interface between the silicate glass and the plasticized polyvinyl chloride containing sheet.
Claim 26
Dependent Claim
18 words
A laminate according to claim 22 wherein said functional silane is disposed within said polyvinyl chloride containing sheet.
Claim 27
Dependent Claim
47 words
A laminate according to claim 1 wherein said functional silane is an silicon organo functional alkoxy silane containing an amino and/or imino and/or epoxy group, one or both of the hydrogen atoms of any amino group present being replaceable by an amino, hydroxy alkyl or polyamino moiety.
Claim 28
Dependent Claim
104 words
A laminate according to claim 25 wherein said organofunctional silane has the formula ##STR9## in which R is a C 1 to C 10 alkyl moiety which can be interrupted by oxygen atoms, R''' is an alkyl moiety of 1 to 8 carbon atoms, A is a straight-chain or branched alkylene moiety of 1 to 8 carbon atoms which can be interrupted by oxygen bridges, m=1 or 2 or 3, n=1 or 2 or 3, R', when m=1, represents H and/or R"--NH 2 or R"OH (R" being an alkylene moiety of 2 to 4 carbon atoms), and, when m=2, R' represents H or ##STR10##
Claim 29
Dependent Claim
45 words
A laminate according to claim 25 wherein said silicon organofunctional silane is one having the formula ##STR11## in which R, R''', A and n have the same meaning as in Formula I and R' is H or CH 3 or C 2 H 5 .
Claim 30
Dependent Claim
42 words
A laminate according to claim 25 wherein said silane has the formula NH.sub.2 --(CH.sub.2).sub.n --Si(OR).sub.3 III wherein n=2 to 6 and R=a branched or unbranched C 1 to C 8 alkyl group which can be interrupted by oxygen atoms in the chain.
Claim 31
Dependent Claim
59 words
A laminate according to claim 25 wherein said silane has the formula HN[CH.sub.2 --CH.sub.2 --CH.sub.2 --Si(OR).sub.3 ].sub.2 IV wherein R is a branched or unbranched C 1 -C 8 alkyl group which can be interrupted by oxygen atoms in the chain and the hydrogen atoms of the amino group can be replaced by an amino or polyamino alkyl moiety.
Claim 32
Dependent Claim
71 words
A laminate according to claim 22 wherein said silane is a silicon-functional silane and has the formula R.sub.n --Si--R'.sub.4-n wherein each R radical represents the same or different saturated straight or branched alkyl moiety of 1 to 10 carbon atoms, R' represents a halogen or identical or different saturated alkoxy group of 1 to 8 carbon atoms which can be interrupted by a hetero atom and n equals 1 to 3.
Claim 33
Dependent Claim
36 words
A laminate according to claim 22 wherein said polyvinyl chloride sheet is a sheet of a polyvinyl chloride homopolymer, a sheet of a polyvinyl chloride copolymer or a sheet of a graft polymer containing polyvinyl chloride.
Claim 34
Dependent Claim
36 words
A laminate according to claim 31 wherein said silane is present in an amount of 0.01 to 5 weight percent and said silane is disposed at the interface of said plastic sheet and said silicate glass.
Claim 35
Dependent Claim
29 words
A laminate according to claim 31 wherein said silane is disposed within the plastic sheet and is present therein in an amount of 0.1 to 5 percent by weight.
Claim 36
Dependent Claim
13 words
A laminate according to claim 22, containing 17% to 45% by weight plasticizer.
Claim 37
Dependent Claim
13 words
A laminate according to claim 34, containing 20% to 37% by weight plasticizer.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-07-06 | 1985-01-05 | 1985-07-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-07-06 | 1989-01-05 | 1989-07-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-07-06 | 1993-01-05 | 1993-07-07 | $7700.00 | Window Closed / Lapsed |