Patent US4650747A successfully refreshed from Google Patents.
US4650747A
Expired / Lapsed
US
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Process for producing photographic master batch and process for producing photographic resin coated paper
Assignee: Mitsubishi Paper Mills Ltd
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Filing: 1984-09-27
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Granted: 1987-03-17
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Expires: 2004-09-27
Abstract
Abstract A polyolefin resin composition containing 5 to 150 ppm of an antioxidant and a high-concentration (e.g. 40 to 80% by weight) titanium dioxide pigment is diluted with a polyolefin resin to prepare a medium-concentration (e.g. 20 to 60% by weight) titanium dioxide pigment-containing photographic master batch, then this master batch is further diluted with a polyolefin resin to form a low-concentration (e.g. 5 to 20% by weight) titanium dioxide pigment-containing resin composition, and this resin composition is melt extruded and coated on a support made of paper or a synthetic paper to produce photographic resin coated paper. According to this process, both die lip staining and formation of microgrits are prevented.
Inventors
- 👤 Akira Uno
- 👤 Akira Ninohira
- 👤 Touru Noda
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 12:01
CPC Classifications
C; C08; C08J; C08J3/00; C08J3/20; C08J3/22; C08J3/226; C09; C09D; C09D123/00; C09D123/02; G; G03; G03C; G03C1/00; G03C1/76; G03C1/775; G03C1/79; C08J2423/00
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
99 words
A process for producing a photographic master batch which comprises diluting a resin composition (A) containing 5 to 150 ppm of an antioxidant, 0.05 to 10 parts by weight of ultramarine in 100 parts by weight of the resin composition (A) and a greater amount of titanium dioxide pigment than contained in the photographic master batch (B) with a diluting resin so that the titanium dioxide pigment content in the master batch (B) will become lower than that in said composition (A) and higher than that in the resin composition (C) from which photographic resin coated paper is produced.
Claim 2
Dependent Claim
99 words
A process for producing a photographic master batch which comprises diluting a resin composition (A) containing 5 to 150 ppm of an antioxidant, 0.05 to 10 parts by weight of ultramarine in 100 parts by weight of the resin composition (A) and a greater amount of titanium dioxide pigment than contained in the photographic master batch (B) with a diluting resin so that the titanium dioxide pigment content in the master batch (B) will become lower than that in said composition (A) and higher than that in the resin composition (C) from which photographic resin coated paper is produced.
Claim 3
Dependent Claim
29 words
A process according to claim 1, wherein the titanium dioxide pigment content in 100 parts by weight of the resin composition (A) is 40 to 80 parts by weight.
Claim 4
Dependent Claim
30 words
A process according to claim 1, wherein the titanium dioxide pigment content in 100 parts by weight of the photographic master batch (B) is 20 to 60 parts by weight.
Claim 5
Dependent Claim
12 words
A process according to claim 1, wherein the antioxidant is hindered phenol.
Claim 6
Dependent Claim
14 words
A process according to claim 1, wherein the resin used is a polyolefin resin.
Claim 7
Dependent Claim
12 words
A photographic master batch obtained according to the process of claim 1.
Claim 8
Dependent Claim
152 words
A process for producing a photographic resin coated paper which comprises diluting a resin composition (A) containing 5 to 150 ppm of an antioxidant, 0.05 to 10 parts by weight of ultramarine in 100 parts by weight of the resin composition (A) and a greater amount of titanium dioxide pigment than contained in the photographic master batch (B) with a diluting resin so that the titanium dioxide pigment content in the master batch (B) will become lower than in said composition (A) and higher than that in the resin composition (C) from which to produce photographic resin coated paper, thereby obtaining a photographic master batch (B), then further diluting said photographic master batch (B) with a diluting resin to obtain a resin composition (C) for producing photographic resin coated paper, and extrusion coating said resin composition (C) on at least one side of a support made of paper or a synthetic paper.
Claim 9
Dependent Claim
152 words
A process for producing a photographic resin coated paper which comprises diluting a resin composition (A) containing 5 to 150 ppm of an antioxidant, 0.05 to 10 parts by weight of ultramarine in 100 parts by weight of the resin composition (A) and a greater amount of titanium dioxide pigment than contained in the photographic master batch (B) with a diluting resin so that the titanium dioxide pigment content in the master batch (B) will become lower than in said composition (A) and higher than that in the resin composition (C) from which to produce photographic resin coated paper, thereby obtaining a photographic master batch (B), then further diluting said photographic master batch (B) with a diluting resin to obtain a resin composition (C) for producing photographic resin coated paper, and extrusion coating said resin composition (C) on at least one side of a support made of paper or a synthetic paper.
Claim 10
Dependent Claim
29 words
A process according to claim 7, wherein the titanium dioxide pigment content in 100 parts by weight of the resin composition (A) is 40 to 80 parts by weight.
Claim 11
Dependent Claim
30 words
A process according to claim 7, wherein the titanium dioxide pigment content in 100 parts by weight of the photographic master batch (B) is 20 to 60 parts by weight.
Claim 12
Dependent Claim
12 words
A process according to claim 7, wherein the antioxidant is hindered phenol.
Claim 13
Dependent Claim
40 words
A process according to claim 7, wherein the titanium dioxide pigment content in 100 parts by weight of the resin composition (C) extrusion-coated on the support made of paper or a synthetic paper is 5 to 20 parts by weight.
Claim 14
Dependent Claim
14 words
A process according to claim 7, wherein the resin used is a polyolefin resin.
Claim 15
Dependent Claim
13 words
A photographic resin coated paper obtained according to the process of claim 7.
Claim 16
Dependent Claim
14 words
A process according to claim 4 wherein the resin used is a polyolefin resin.
Claim 17
Dependent Claim
12 words
A photographic master batch obtained according to the process of claim 14.
Claim 18
Dependent Claim
21 words
A process according to claim 6 wherein the antioxidant is a hindered phenol and the resin used is a polyolefin resin.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-03-16 | 1990-09-15 | 1991-03-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-03-16 | 1994-09-15 | 1995-03-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-03-16 | 1998-09-15 | 1999-03-17 | $7700.00 | Window Closed / Lapsed |