Patent US4413068A successfully refreshed from Google Patents.
US4413068A
Expired / Lapsed
US
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Hard shell soft core latex
Assignee: BASF SE
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Filing: 1981-07-02
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Granted: 1983-11-01
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Expires: 2001-07-02
Abstract
Abstract Paper coating compositions manufactured from a novel latex comprising about 40 to 60 weight percent of heterogeneous polymer particles which have: (1) an initial domain, comprising about 50% by volume of the particle which is a polymer of a monomer composition comprising: (a) From about 55 to about 65 parts by weight of a monovinylidene aromatic monomer; (b) From about 45 to about 35 parts by weight of an aliphatic C 4-6 conjugated diene monomer; and per 100 parts by weight of the total of said monovinylidene aromatic monomer and said aliphatic C 4-6 conjugated diene monomer; (c) from about 0.5 to 5 parts by weight of C 3-5 ethylenically unsaturated carboxylic acid; and (d) from about 0.5 to 5 parts by weight of a C 3-6 ethylenically unsaturated primary amide; and (2) a subsequent domain comprising about 50% by volume of the particle which is a polymer of a monomer compo- sition comprising: (a) From about 75 to 85 parts by weight of a monovinylidene aromatic monomer; (b) From about 25 to 15 parts by weight of an aliphatic C 4-6 conjugated diene monomer and per 100 parts by weight of the total of said monovinylidene aromatic monomer and said aliphatic C 4-6 conjugated diene monomer; (c) from about 0.5 to 5 parts by weight of a C 3-5 ethylenically unsaturated carboxylic acid and; (d) from about 0.5 to 5 parts by weight of a C 3-6 ethylenically unsaturated primary amide. Such compositions provide enhanced gloss and pick characteristics.
Inventors
- 👤 Alvin R. Sinclair
- 👤 Edward H. Gleason
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 06:33
CPC Classifications
D; D21; D21H; D21H19/00; D21H19/36; D21H19/44; D21H19/56; D21H19/58; C; C08; C08F; C08F257/00; C08F257/02; C08F279/00; C08F279/02; Y; Y10; Y10S; Y10S525/00; Y10S525/902
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
255 words
A latex comprising about 40 to 60 weight percent of heterogeneous polymer particles which have (a) an initial domain, comprising about 50% by volume of the particle which is a polymer of a monomer composition comprising: (i) from about 55 to about 65 parts by weight of a monovinylidene aromatic monomer; (ii) From about 45 to about 35 parts by weight of an aliphatic C 4-6 conjugated diene monomer; and per 100 parts by weight of the total of said monovinylidene aromatic monomer and said aliphatic C 4-6 conjugated diene monomer; (iii) from about 0.5 to 5 parts by weight of C 3-6 ethylenically unsaturated carboxylic acid, anhydrides thereof, or a mixture thereof and (iv) from about 0.5 to 5 parts by weight of a C 3-6 ethylenically unsaturated primary amide or a mixture thereof; and (b) a subsequent domain comprising about 50% by volume of the particle which is a polymer of a monomer composition comprising: (i) from about 75 to 85 parts by weight of a monovinylidene aromatic monomer; (ii) from about 25 to 15 parts by weight of an aliphatic C 4-6 conjugated diene monomer and per 100 parts by weight of the total of said monovinylidene aromatic monomer and said aliphatic C 4-6 conjugated diene monomer; (iii) from about 0.5 to 5 parts by weight of a C 3-6 ethylenically unsaturated carboxylic acid, anhydrides thereof, or a mixture thereof and; (iv) from about 0.5 to 5 parts by weight of a C 3-6 ethylenically unsaturated primary amide or a mixture thereof;
Claim 2
Dependent Claim
255 words
A latex comprising about 40 to 60 weight percent of heterogeneous polymer particles which have (a) an initial domain, comprising about 50% by volume of the particle which is a polymer of a monomer composition comprising: (i) from about 55 to about 65 parts by weight of a monovinylidene aromatic monomer; (ii) From about 45 to about 35 parts by weight of an aliphatic C 4-6 conjugated diene monomer; and per 100 parts by weight of the total of said monovinylidene aromatic monomer and said aliphatic C 4-6 conjugated diene monomer; (iii) from about 0.5 to 5 parts by weight of C 3-6 ethylenically unsaturated carboxylic acid, anhydrides thereof, or a mixture thereof and (iv) from about 0.5 to 5 parts by weight of a C 3-6 ethylenically unsaturated primary amide or a mixture thereof; and (b) a subsequent domain comprising about 50% by volume of the particle which is a polymer of a monomer composition comprising: (i) from about 75 to 85 parts by weight of a monovinylidene aromatic monomer; (ii) from about 25 to 15 parts by weight of an aliphatic C 4-6 conjugated diene monomer and per 100 parts by weight of the total of said monovinylidene aromatic monomer and said aliphatic C 4-6 conjugated diene monomer; (iii) from about 0.5 to 5 parts by weight of a C 3-6 ethylenically unsaturated carboxylic acid, anhydrides thereof, or a mixture thereof and; (iv) from about 0.5 to 5 parts by weight of a C 3-6 ethylenically unsaturated primary amide or a mixture thereof;
Claim 3
Dependent Claim
98 words
A latex according to claim 1 wherein the first domain is the core portion of the heterogeneous particle and is a polymer of a monomer composition comprising: (a) about 60 parts by weight % of a vinyl aromatic monomer; (b) about 40 parts by weight % of an aliphatic C 4-6 conjugated diene; and per 100 parts by weight of the total of said monovinylidene aromatic monomer and said C 4-6 conjugated aliphatic diene monomer: (i) about 1 part of C 3-6 ethylenically unsaturated carboxylic acid; (ii) about 1 part of a C 3-6 ethylenically unsaturated primary amide;
Claim 4
Dependent Claim
97 words
A latex according to claim 1 wherein the subsequent domain is the shell portion of the heterogeneous particles and is a polymer of a monomer composition comprising: (a) about 80 parts by weight of a monovinylidene aromatic monomer (b) about 20 parts by weight of an aliphatic C 4-6 conjugated diene monomer; and per 100 parts by weight of the total of said monovinylidene aromatic monomer and said C 4-6 conjugated aliphatic diene monomer: (i) about 1 part of C 3-6 ethylenically unsaturated carboxylic acid; (ii) about 1 part of a C 3-6 ethylenically unsaturated primary amide;
Claim 5
Dependent Claim
97 words
A latex according to claim 2 wherein the subsequent domain is the shell portion of the heterogeneous particle and is a polymer of a monomer composition comprising: (a) about 80 parts by weight of a monovinylidene aromatic monomer (b) about 20 parts by weight of an aliphatic C 4-6 conjugated diene monomer; and per 100 parts by weight of the total of said monovinylidene aromatic monomer and said C 4-6 conjugated aliphatic diene monomer: (i) about 1 part of C 3-6 ethylenically unsaturated carboxylic acid; (ii) about 1 part of a C 3-6 ethylenically unsaturated primary amide;
Claim 6
Dependent Claim
43 words
A latex according to claim 2, 3 or 4 wherein said monovinylidene aromatic monomer is Styrene, said C 4-6 conjugated diene is butadiene, said aliphatic C 3-6 ethylenically unsaturated acid is itaconic acid and said C 3-6 ethylenically unsaturated primary amide is acrylamide.
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) | 1986-10-31 | 1987-05-02 | 1987-11-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-10-31 | 1991-05-02 | 1991-11-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-10-31 | 1995-05-02 | 1995-11-01 | $7700.00 | Window Closed / Lapsed |