US4273799A
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US
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Method for producing a synthetic resin molded product having an abrasion resistant surface
Assignee: Mitsubishi Chemical Corp
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Filing: 1979-05-02
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Granted: 1981-06-16
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Expires: 1999-05-02
Abstract
Abstract This invention relates to a coating composition which comprises a polyfunctional monomer having at least three acryloyloxy groups and/or methacryloyloxy groups in one molecule, a monomer having not more than two acryloyloxy groups and/or methacryloyloxy groups in one molecule and optionally photosensitizer and which can form a crosslink-hardened film excellent in abrasion resistance upon curing by irradiation with actinic radiation in air and a method for producing a synthetic resin molded product having an abrasion resistant surface.
Inventors
- 👤 Kazumasa Kamada
- 👤 Kenji Kushi
- 👤 Keisuke Yoshihara
- 👤 Hideo Nakamoto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:07
CPC Classifications
C; C09; C09D; C09D4/00; C08; C08K; C08K5/00; C08K5/0008; C08K5/0016; C08K5/04; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31507; Y10T428/31551; Y10T428/31645; Y10T428/31649; Y10T428/31855
Claims Analysis
Total Claims: 24
Claim 1
Independent Claim
98 words
A coating composition which comprises 100 parts by weight of a monomer mixture (A) comprising 30-98% by weight of a polyfunctional monomer having at least three substituents selected from the group consisting of acryloyloxy groups and methacryloyloxy groups in one molecule and 70-2% by weight of at least one monomer selected from the group consisting of methoxyethyl (meth)acrylate, ethoxyethyl (meth)acrylate, butoxyethyl (meth)acrylate, methoxydiethylene glycol (meth)acrylate and dipropylene glycol mono(meth)acrylate and 0-10 parts by weight of a photosensitizer and which can form a crosslinked hardened film excellent in abrasion resistance upon irradiation with actinic radiation in an air atmosphere.
Claim 2
Dependent Claim
98 words
A coating composition which comprises 100 parts by weight of a monomer mixture (A) comprising 30-98% by weight of a polyfunctional monomer having at least three substituents selected from the group consisting of acryloyloxy groups and methacryloyloxy groups in one molecule and 70-2% by weight of at least one monomer selected from the group consisting of methoxyethyl (meth)acrylate, ethoxyethyl (meth)acrylate, butoxyethyl (meth)acrylate, methoxydiethylene glycol (meth)acrylate and dipropylene glycol mono(meth)acrylate and 0-10 parts by weight of a photosensitizer and which can form a crosslinked hardened film excellent in abrasion resistance upon irradiation with actinic radiation in an air atmosphere.
Claim 3
Dependent Claim
103 words
The coating composition of claim 1, wherein the polyfunctional monomer is at least one polyfunctional (meth)acrylate selected from the group consisting of poly(meth)acrylates of mono or polypentaerythritol having at least three methacryloyloxy groups and/or acryloyloxy groups in one molecule wherein said mono or polypentaerythritol has the formula: ##STR3## (wherein at least three of X 11 , X 12 , X 13 , X 22 , X 23 , . . . Xn 2 , Xn 3 and X 14 are CH 2 =CR--COO--group and the remainder are --OH group, n is an integer of 1-5 and R is hydrogen atom or methyl group).
Claim 4
Dependent Claim
21 words
The coating composition of claim 2, wherein the polyfunctional monomer is selected from the group consisting of pentaerythritol tri and tetra(meth)acrylate.
Claim 5
Dependent Claim
23 words
The coating composition of claim 2, wherein the polyfunctional monomer is selected from the group consisting of dipentaerythritol tri, tetra, penta and hexa(meth)acrylate.
Claim 6
Dependent Claim
39 words
The coating composition of claim 1 which comprises 5-90 parts by weight of said monomer mixture and 95-10 parts by weight of at least one organic solvent which is mixed with said monomer mixture to form a homogeneous solution.
Claim 7
Dependent Claim
21 words
The coating composition of claim 5, wherein the polyfunctional monomer is selected from the group consisting of pentaerythritol tri and tetra(meth)acrylate.
Claim 8
Dependent Claim
23 words
The coating composition of claim 5, wherein the polyfunctional monomer is selected from the group consisting of dipentaerythritol tri, tetra, penta and hexa(meth)acrylate.
Claim 9
Dependent Claim
17 words
The coating composition of claim 5, wherein the organic solvent has a boiling point of 50°-200° C.
Claim 10
Dependent Claim
19 words
The coating composition of claim 5, which has a viscosity of not more than 10 centripoises at 25° C.
Claim 11
Independent Claim
144 words
A method for producing an abrasion resistant synthetic resin molded product, which comprises coating on the surface of a synthetic resin molded product a coating composition which comprises 100 parts by weight of a monomer mixture (A) comprising 30-98% by weight of a polyfunctional monomer having at least three groups selected from acryloyloxy group and methacryloyloxy group in one molecule and 70-2% by weight of at least one monomer selected from the group consisting of methoxyethyl (meth)acrylate, ethoxyethyl (meth)acrylate, butoxyethyl (meth)acrylate, methoxydiethylene glycol (meth)acrylate and dipropylene glycol mono-(meth) acrylate and 0-10 parts by weight of a photosensitizer and which can form a crosslinked-hardened film excellent in abrasion resistance by irradiation with actinic radiation in an air atmosphere and then irradiating the coating film with actinic radiation to form a crosslinked-hardened film of 1-30 um thick on the surface of the synthetic resin molded product.
Claim 12
Independent Claim
144 words
A method for producing an abrasion resistant synthetic resin molded product, which comprises coating on the surface of a synthetic resin molded product a coating composition which comprises 100 parts by weight of a monomer mixture (A) comprising 30-98% by weight of a polyfunctional monomer having at least three groups selected from acryloyloxy group and methacryloyloxy group in one molecule and 70-2% by weight of at least one monomer selected from the group consisting of methoxyethyl (meth)acrylate, ethoxyethyl (meth)acrylate, butoxyethyl (meth)acrylate, methoxydiethylene glycol (meth)acrylate and dipropylene glycol mono-(meth) acrylate and 0-10 parts by weight of a photosensitizer and which can form a crosslinked-hardened film excellent in abrasion resistance by irradiation with actinic radiation in an air atmosphere and then irradiating the coating film with actinic radiation to form a crosslinked-hardened film of 1-30 um thick on the surface of the synthetic resin molded product.
Claim 13
Dependent Claim
102 words
The method of claim 10, wherein the polyfunctional monomer is at least one polyfunctional (meth)acrylate selected from the group consisting of poly(meth)acrylates of mono or polypentaerythritol having at least three methacryloyloxy groups and/or acryloyloxy groups in one molecule wherein said mono or polypentaerythritol has the formula: ##STR4## (wherein at least three of X 11 , X 12 , X 13 , X 22 , X 23 , . . . Xn 2 , Xn 3 and X 14 are CH 2 =CR--COO--group and the remainder are --OH group, n is an integer of 1-5 and R is hydrogen atom or methyl group).
Claim 14
Dependent Claim
20 words
The method of claim 11, wherein the polyfunctional monomer is selected from the group consisting of pentaerythritol tri and tetra(meth)acrylate.
Claim 15
Dependent Claim
22 words
The method of claim 11, wherein the polyfunctional monomer is selected from the group consisting of dipentaerythritol tri, tetra, penta and hexa(meth)acrylate.
Claim 16
Dependent Claim
21 words
The method of claim 10, wherein the synthetic resin molded product is methacrylic resin, polycarbonate resin, or polyallyl diglycol carbonate resin.
Claim 17
Dependent Claim
42 words
The method of claim 10, wherein said coating composition comprises 5-90 parts by weight of said monomer mixture and 95-10 parts by weight of at least one organic solvent (B) which is mixed with said monomer mixture to form a homogeneous solution.
Claim 18
Dependent Claim
102 words
The method of claim 15, wherein the polyfunctional monomer is at least one polyfunctional (meth)acrylate selected from the group consisting of poly(meth)acrylates of mono or polypentaerythritol having at least three methacryloyloxy groups and/or acryloyloxy groups in one molecule wherein said mono or polypentaerythritol has the formula: ##STR5## (wherein at least three of X 11 , X 12 , X 13 , X 22 , X 23 , . . . Xn 2 , Xn 3 and X 14 are CH 2 =CR--COO--group and the remainder are --OH group, n is an integer of 1-5 and R is hydrogen atom or methyl group).
Claim 19
Dependent Claim
20 words
The method of claim 16, wherein the polyfunctional monomer is selected from the group consisting of pentaerythritol tri and tetra(meth)acrylate.
Claim 20
Dependent Claim
22 words
The method of claim 16, wherein the polyfunctional monomer is selected from the group consisting of dipentaerythritol tri, tetra, penta and hexa(meth)acrylate.
Claim 21
Dependent Claim
16 words
The method of claim 15, wherein the organic solvent has a boiling point of 50°-200° C.
Claim 22
Dependent Claim
59 words
The method of claim 15, which comprises coating the coating composition on the surface of the resin molded product, volatilizing and releasing at least 50% by weight of the organic solvent contained in the coated film and then irradiating the film with actinic radiation to form a crosslink-hardened film of 1-30μ thick on the surface of the molded product.
Claim 23
Dependent Claim
43 words
The method of claim 15, which comprises coating on the surface of the synthetic resin molded product the coating composition having a viscosity of not more than 10 centipoises at 25° C. by dipping method and forming a crosslink-hardened film of 1-9μ thick.
Claim 24
Dependent Claim
23 words
The method of claim 15, wherein the synthetic resin molded product is methacrylic resin, polycarbonate resin or polyallyl diglycol carbonate resin molded product.
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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) | 1984-06-15 | 1984-12-15 | 1985-06-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-06-15 | 1988-12-15 | 1989-06-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-06-15 | 1992-12-15 | 1993-06-16 | $7700.00 | Window Closed / Lapsed |