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US4167537A Expired / Lapsed US ⏱️ 0.0 years remaining

Surface-treating coating composition for plastic articles

Assignee: Mitsubishi Gas Chemical Co Inc
•
Filing: 1978-01-16
•
Granted: 1979-09-11
•
Expires: 1998-01-16
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Abstract

Abstract A surface-coating composition for plastic articles, which comprises as a film-forming agent (A) a mixture of the reaction of an aminoalkylalkoxy silane of the general formula ##STR1## WHEREIN R 1 represents a divalent hydrocarbon group containing 1 to 4 carbon atoms, R 2 and R 3 represent a monovalent hydrocarbon group containing 1 to 4 carbon atoms, Z represents a hydrogen atom or an aminoalkyl group, and n is 0 or 1, with an epoxyalkylalkoxy silane of the general formula ##STR2## WHEREIN R 1 , R 2 and R 3 are as defined above, Q represents a glycidoxy group ##STR3## or an epoxycyclohexyl group, and m is 0 or 1, and (B) a mixture of an alkyl-modified methylol melamine of the general formula ##STR4## wherein R 4 , R 5 , R 6 , R 7 , R 8 and R 9 represent a hydrogen atom or a monovalent hydrocarbon group with 1 to 4 carbon atoms, and an alkyd resin; the amount of component (A) being 45 to 80% by weight, and the amount of component (B) being 20 to 55% by weight, both based on the total amount of components (A) and (B). The composition may further contain (C) an acrylic acid derivative of the general formula ##STR5## wherein R 10 represents a hydrogen atom or a methyl group, and R 11 represents a hydrogen atom, a hydrocarbon group containing 1 to 4 carbon atoms, a hydroxyalkyl group or a glycidyl group, or its polymer of a low degree of polymerization, the amount of component (C) being 5 to 30% by weight based on the total amount of components (A), (B) and (C).

Inventors

  • 👤 Susumu Taniyama
  • 👤 Hiromitsu Takanohashi
  • 👤 Shoichi Inoue

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-06 17:42
CPC Classifications
C; C09; C09D; C09D161/00; C09D161/20; C09D161/26; C09D161/28; C09D183/00; C09D183/04; C09D183/08

Claims Analysis

Total Claims: 7
Claim 1
Independent Claim 198 words
A surface-coating composition for plastic articles, which comprises as a film-forming agent a mixture of (A) a mixture of the reaction of an aminoalkylalkoxy silane of the general formula ##STR16## wherein R 1 represents a divalent hydrocarbon group containing 1 to 4 carbon atoms, R 2 and R 3 represent a monovalent hydrocarbon group containing 1 to 4 carbon atoms, Z represents a hydrogen atom or an aminoalkyl group, and n is 0 or 1, with an epoxyalkylakoxy silane of the general formula ##STR17## wherein R 1 , R 2 and R 3 are as defined above, Q represents a glycidoxy group ##STR18## or an epoxycyclohexyl group, and m is 0 or 1, and (B) a mixture of an alkyl-modified methylol melamine of the general formula ##STR19## wherein R 4 , R 5 , R 6 , R 7 , R 8 and R 9 represent a hydrogen atom or a monovalent hydrocarbon group with 1 to 4 carbon atoms, and an alkyd resin; the amount of component (A) being 45 to 80% by weight, and the amount of component (B) being 20 to 55% by weight, both based on the total amount of components (A) and (B).
Claim 2
Dependent Claim 198 words
A surface-coating composition for plastic articles, which comprises as a film-forming agent a mixture of (A) a mixture of the reaction of an aminoalkylalkoxy silane of the general formula ##STR16## wherein R 1 represents a divalent hydrocarbon group containing 1 to 4 carbon atoms, R 2 and R 3 represent a monovalent hydrocarbon group containing 1 to 4 carbon atoms, Z represents a hydrogen atom or an aminoalkyl group, and n is 0 or 1, with an epoxyalkylakoxy silane of the general formula ##STR17## wherein R 1 , R 2 and R 3 are as defined above, Q represents a glycidoxy group ##STR18## or an epoxycyclohexyl group, and m is 0 or 1, and (B) a mixture of an alkyl-modified methylol melamine of the general formula ##STR19## wherein R 4 , R 5 , R 6 , R 7 , R 8 and R 9 represent a hydrogen atom or a monovalent hydrocarbon group with 1 to 4 carbon atoms, and an alkyd resin; the amount of component (A) being 45 to 80% by weight, and the amount of component (B) being 20 to 55% by weight, both based on the total amount of components (A) and (B).
Claim 3
Dependent Claim 34 words
The composition of claim 1 wherein the reaction mixture (A) is obtained by mixing 20 to 70 mole% of the aminoalkylalkoxy silane and 30 to 80 mole% of the epoxyalkylalkoxy silane, and reacting them.
Claim 4
Dependent Claim 33 words
The composition of claim 1 wherein the mixture (B) is a mixture of 10 to 70% by weight of the alkyl-modified methylol melamine and 30 to 90% by weight of the alkyd resin.
Claim 5
Dependent Claim 83 words
The composition of claim 1 which further contains (C) an acrylic acid derivative of the general formula ##STR20## wherein R 10 represents a hydrogen atom or a methyl group, and R 11 represents a hydrogen atom, a hydrocarbon group containing 1 to 4 carbon atoms, a hydroxyalkyl group or a glycidyl group, or its polymer of a low degree of polymerization, the amount of component (C) being 5 to 30% by weight based on the total amount of components (A), (B) and (C).
Claim 6
Dependent Claim 34 words
The composition of claim 4 wherein the reaction mixture (A) is obtained by mixing 20 to 70 mole% of the aminoalkylalkoxy silane and 30 to 80 mole% of the epoxyalkylalkoxy silane, and reacting them.
Claim 7
Dependent Claim 33 words
The composition of claim 4 wherein the mixture (B) is a mixture of 10 to 70% by weight of the alkyl-modified methylol melamine and 30 to 90% by weight of the alkyd resin.

References Cited (Backward Citations)

US3425974A Cited
US3919150A Cited
US3837876A Cited
US3988523A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1982-09-10 1983-03-12 1983-09-11 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1986-09-10 1987-03-12 1987-09-11 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1990-09-10 1991-03-12 1991-09-11 $7700.00 Window Closed / Lapsed

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