Patent US4329276A successfully refreshed from Google Patents.
US4329276A
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Molding components
Assignee: EIDP Inc
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Filing: 1981-03-11
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Granted: 1982-05-11
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Expires: 2001-03-11
Abstract
Abstract A blend of a methacrylate, acrylate or styrene polymer; selected ethylene terpolymers, and carbon black is useful to add to polyvinyl chloride polymers to make molding resins.
Inventors
- 👤 Joseph E. Reardon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 12:51
CPC Classifications
C; C08; C08L; C08L25/00; C08L25/02; C08L25/04; C08L25/08; C08L25/14; C08K; C08K3/00; C08K3/02; C08K3/04; C08L33/00; C08L33/04; C08L33/06; C08L73/00
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
150 words
A molding blend component consisting essentially of (a) about 40-85% by weight of blend of at least one acrylic polymer having a glass transition temperature of between about 45°-105° C. and an inherent viscosity between 0.1-0.6, said polymer containing units derived from ______________________________________
0-100%
##STR5##
0-100%
##STR6##
0-50% styrene,
______________________________________ in which the total percent of the monomer units is 100% and R is alkyl of 1-18 carbons; (b) about 5-30% by weight of blend of a high melt index terpolymer derived from units (by weight) of 60-80% ethylene, 5-60% copolymerizable unsaturated monomer, and 3-30% carbon monoxide, said terpolymer having a melt index over 20; (c) about 5-30% by weight of blend of a low melt index terpolymer derived from units (by weight) of 60-80% ethylene, 5-60% copolymerizable unsaturated monomer, and 3-30% carbon monoxide, said terpolymer having a melt index less than 1; (d) about 2-20% by weight carbon black.
Claim 2
Dependent Claim
150 words
A molding blend component consisting essentially of (a) about 40-85% by weight of blend of at least one acrylic polymer having a glass transition temperature of between about 45°-105° C. and an inherent viscosity between 0.1-0.6, said polymer containing units derived from ______________________________________
0-100%
##STR5##
0-100%
##STR6##
0-50% styrene,
______________________________________ in which the total percent of the monomer units is 100% and R is alkyl of 1-18 carbons; (b) about 5-30% by weight of blend of a high melt index terpolymer derived from units (by weight) of 60-80% ethylene, 5-60% copolymerizable unsaturated monomer, and 3-30% carbon monoxide, said terpolymer having a melt index over 20; (c) about 5-30% by weight of blend of a low melt index terpolymer derived from units (by weight) of 60-80% ethylene, 5-60% copolymerizable unsaturated monomer, and 3-30% carbon monoxide, said terpolymer having a melt index less than 1; (d) about 2-20% by weight carbon black.
Claim 3
Dependent Claim
31 words
The blend of claim 1 wherein the polymer defined as component (a) is a polymer consisting of units derived from 0-100% CH 2 ═CCH 3 --COOR and 0-100% CH 2 ═CH--COOR.
Claim 4
Dependent Claim
30 words
The blend of claim 1 wherein the polymer defined as component (a) is a polymer containing units derived from 10-90% CH 2 ═CCH 3 --COOR and 90-10% CH 2 ═CH--COOR.
Claim 5
Dependent Claim
25 words
The blend of claim 1 wherein the polymer defined as component (a) is a polymer containing units derived from 100% CH 2 ═CCH 3 --COOR.
Claim 6
Dependent Claim
30 words
The blend of claim 1 wherein the polymer defined as component (a) is a copolymer of methyl methacrylate and butyl methacrylate in a proportion of 50/50 to 85/15 by weight.
Claim 7
Dependent Claim
39 words
The blend of claim 1, 2, 3, 4 or 5 wherein in each of components (b) and (c), the copolymerizable unsaturated monomer is a vinyl ester of a saturated carboxylic acid wherein the acid group has 1-18 carbon atoms.
Claim 8
Dependent Claim
46 words
The blends of claim 1, 2, 3, 4 or 5 wherein the each of components (b) and (c) the terpolymers are derived from units of 56-76% ethylene, 10-34% vinyl ester of saturated carboxylic acid wherein the acid group has 1-18 carbon atoms, and 3-15% carbon monoxide.
Claim 9
Dependent Claim
69 words
A molding blend component consisting essentially of a mixture of two copolymers, each copolymer derived from units of 60-80% ethylene, 5-60% vinyl ester of saturated carboxylic acid wherein the acid group has 1-18 carbon atoms, and 3-30% carbon monoxide, one said copolymer having a melt index over 30 and the second having a melt index less than 1; said copolymers present in a weight ratio between 1:3 and 3:1.
Claim 10
Dependent Claim
69 words
A molding blend component consisting essentially of a mixture of two copolymers, each copolymer derived from units of 60-80% ethylene, 5-60% vinyl ester of saturated carboxylic acid wherein the acid group has 1-18 carbon atoms, and 3-30% carbon monoxide, one said copolymer having a melt index over 30 and the second having a melt index less than 1; said copolymers present in a weight ratio between 1:3 and 3:1.
Claim 11
Dependent Claim
18 words
The molding blend component of claim 8 wherein the vinyl ester of saturated carboxylic acid is vinyl acetate.
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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) | 1985-05-10 | 1985-11-09 | 1986-05-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-05-10 | 1989-11-09 | 1990-05-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-05-10 | 1993-11-09 | 1994-05-11 | $7700.00 | Window Closed / Lapsed |