US3929693A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Film-forming compositions comprising dispersions of cellulose acetate butyrate or polymethylmethacrylate combined with rubbery particles of crosslinked polyacrylates in liquid carrer
Assignee: EIDP Inc
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Filing: 1973-02-12
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Granted: 1975-12-30
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Expires: 1993-02-12
Abstract
Abstract Polymer compositions having beneficial utility in the manufacture of adherent, flexible, polymeric coatings and adhesive layers and having wide utility in the polymeric filmforming art are prepared by first providing spherical monomolecular particles of a rubbery polymer which has a weight average molecular weight of at least 100 million which particles have means for attaching thereto by a chemical bond a second polymeric portion, and then attaching to said particles by a chemical bond (e.g., by grafting) a second portion composed of a polymer which is soluble in a hard polymer selected from polymers having a weight average molecular weight of about 50,000 to 10 million and a Knoop hardness value of at least 5; very useful film-forming compositions are obtainable by dispersing the resulting polymeric particles and said hard polymer in a liquid such as water or an organic solvent suitable for use as the continuous phase of a polymer solution or suspension.
Inventors
- 👤 Seymore Hochberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 21:06
CPC Classifications
C; C08; C08F; C08F265/00; C08F265/04; C08F265/06; C08K; C08K5/00; C08K5/0008; C08K5/0016; C08K5/04; C08K5/10; C08L; C08L1/00; C08L1/08; C08L1/10; C08L1/14; C08L51/00; C08L51/04; C09; C09D; C09D151/00; C09D151/04
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
3 words
A DISPERSION COMPRISING
Claim 2
Dependent Claim
3 words
A DISPERSION COMPRISING
Claim 3
Dependent Claim
38 words
CELLULOSE ACETATE BUTYRATE OR A POLY(ALKYL METHACRYLATE) HAVING 1-8 CARBON ATOMS IN THE ALKYL RADICAL, WHEREIN SAID POLYMER HAD A WEIGHT AVERAGE MOLECULAR WEIGHT FROM 50,000 TO 10 MILLION AND A KNOOP HARDNESS VALUE OF AT LEAST 5;
Claim 4
Dependent Claim
38 words
CELLULOSE ACETATE BUTYRATE OR A POLY(ALKYL METHACRYLATE) HAVING 1-8 CARBON ATOMS IN THE ALKYL RADICAL, WHEREIN SAID POLYMER HAD A WEIGHT AVERAGE MOLECULAR WEIGHT FROM 50,000 TO 10 MILLION AND A KNOOP HARDNESS VALUE OF AT LEAST 5;
Claim 5
Dependent Claim
167 words
A POLYMERIC COMPOSITION PREPARED BY A. PROVIDING, AS A FIRST PORTION, SUBSTANTIALLY SPHERICAL MONOMOLECULAR PARTICLES OF A POLYMER EACH OF WHICH HAS SITES OF FREE RADICAL ATTACK, WHEREIN SAID PARTICLES HAVE AN AVERAGE DIAMETER OF ABOUT 60-20,000 MILLIMICRONS, A WEIGHT AVERAGE MOLECULAR WEIGHT OF AT LEAST 100 MILLION, AND WHICH ARE RUBBERY AT A TEMPERATURE BELOW 60*C, PREPARED BY POLYMERIZING, IN A SUITABLE REACTION MEDIUM, A MIXTURE OF REACTIVE COMPONENTS WHICH CONTAIN IN EACH 100 PARTS OF A WEIGHT THEREOF X. ABOUT 75-99 PARTS OF A MONOETHYLENICALLY UNSATURATED MONOMER HAVING AN ALKYL (C1-C8) ACRYLATE CONTENT OF ABOUT 75-100% BY WEIGHT, Y. ABOUT 0.5-24 PARTS ALLYL METHACRYLATE, AND Z. ABOUT 1-15 PARTS OF A CROSS-LINKING AGENT, OTHER THAN ALLY METHACRYLATE, HAVING AT LEAST TWO POLYMERIZABLE DOUBLE BONDS PER MOLECULE, AND B. GRAFTING TO EACH OF THE PARTICLES AT SAID SITES A SECOND PORTION COMPOSED OF A POLY(ALKYLMETHACRYLATE) OF 1-8 CARBON ATOMS IN THE ALKYL GROUP, WHEREIN SAID SECOND PORTION HAS A WEIGHT AVERAGE MOLECULAR WEIGHT OF 1,000-150,000, AND
Claim 6
Dependent Claim
167 words
A POLYMERIC COMPOSITION PREPARED BY A. PROVIDING, AS A FIRST PORTION, SUBSTANTIALLY SPHERICAL MONOMOLECULAR PARTICLES OF A POLYMER EACH OF WHICH HAS SITES OF FREE RADICAL ATTACK, WHEREIN SAID PARTICLES HAVE AN AVERAGE DIAMETER OF ABOUT 60-20,000 MILLIMICRONS, A WEIGHT AVERAGE MOLECULAR WEIGHT OF AT LEAST 100 MILLION, AND WHICH ARE RUBBERY AT A TEMPERATURE BELOW 60*C, PREPARED BY POLYMERIZING, IN A SUITABLE REACTION MEDIUM, A MIXTURE OF REACTIVE COMPONENTS WHICH CONTAIN IN EACH 100 PARTS OF A WEIGHT THEREOF X. ABOUT 75-99 PARTS OF A MONOETHYLENICALLY UNSATURATED MONOMER HAVING AN ALKYL (C1-C8) ACRYLATE CONTENT OF ABOUT 75-100% BY WEIGHT, Y. ABOUT 0.5-24 PARTS ALLYL METHACRYLATE, AND Z. ABOUT 1-15 PARTS OF A CROSS-LINKING AGENT, OTHER THAN ALLY METHACRYLATE, HAVING AT LEAST TWO POLYMERIZABLE DOUBLE BONDS PER MOLECULE, AND B. GRAFTING TO EACH OF THE PARTICLES AT SAID SITES A SECOND PORTION COMPOSED OF A POLY(ALKYLMETHACRYLATE) OF 1-8 CARBON ATOMS IN THE ALKYL GROUP, WHEREIN SAID SECOND PORTION HAS A WEIGHT AVERAGE MOLECULAR WEIGHT OF 1,000-150,000, AND
Claim 7
Dependent Claim
168 words
a polymeric composition prepared by A. providing, as a first portion, substantially spherical monomolecular particles of a polymer each of which has sites of free radical attack, wherein said particles have an average diameter of about 60-20,000 millimicrons, a weight average molecular weight of at least 100 million, and which are rubbery at a temperature below 60*C, prepared by polymerizing, in a suitable reaction medium, a mixture of reactive components which contain in each 100 parts of a weight thereof x. about 75-99 parts of a monoethylenically unsaturated monomer having an alkyl (C1-C8) acrylate content of about 75-100% by weight, y. about 0.5-24 parts of allyl methacrylate, and z. about 1-15 parts of a cross-linking agent, other than allyl methacrylate, having at least two polymerizable double bonds per molecule, and B. grafting to each of the particles at said sites a second portion composed of a poly(alkylmethacrylate) of 1-8 carbon atoms in the alkyl group, wherein said second portion has a weight average molecular weight of 1,000-150,000, and
Claim 8
Dependent Claim
168 words
a polymeric composition prepared by A. providing, as a first portion, substantially spherical monomolecular particles of a polymer each of which has sites of free radical attack, wherein said particles have an average diameter of about 60-20,000 millimicrons, a weight average molecular weight of at least 100 million, and which are rubbery at a temperature below 60*C, prepared by polymerizing, in a suitable reaction medium, a mixture of reactive components which contain in each 100 parts of a weight thereof x. about 75-99 parts of a monoethylenically unsaturated monomer having an alkyl (C1-C8) acrylate content of about 75-100% by weight, y. about 0.5-24 parts of allyl methacrylate, and z. about 1-15 parts of a cross-linking agent, other than allyl methacrylate, having at least two polymerizable double bonds per molecule, and B. grafting to each of the particles at said sites a second portion composed of a poly(alkylmethacrylate) of 1-8 carbon atoms in the alkyl group, wherein said second portion has a weight average molecular weight of 1,000-150,000, and
Claim 9
Dependent Claim
24 words
The dispersion of claim 1 wherein the monomer in (2) (A) (x) is butyl acrylate and the poly(alkyl methacrylate) in (B) is poly(methyl methacrylate).
Claim 10
Dependent Claim
3 words
a liquid carrier.
Claim 11
Dependent Claim
3 words
a liquid carrier.
Claim 12
Dependent Claim
3 words
A LIQUID CARRIER.
Claim 13
Dependent Claim
3 words
A LIQUID CARRIER.
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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) | 1978-12-29 | 1979-06-30 | 1979-12-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-12-29 | 1983-06-30 | 1983-12-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-12-29 | 1987-06-30 | 1987-12-30 | $7700.00 | Window Closed / Lapsed |