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Patent US4371639A successfully refreshed from Google Patents.
US4371639A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polyester polymer concrete compositions
Assignee: MMFG ACQUISITION CORP
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Filing: 1981-04-03
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Granted: 1983-02-01
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Expires: 2001-04-03
Abstract
Abstract Curable polymer concrete compositions suitable for articles of construction comprise (1) a minor amount of a polyester resin composition, (2) a major amount of an aggregate blend comprising (a) sand and (b) fly ash and (3) a free-radical curing agent.
Inventors
- 👤 Larry C. Muszynski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 16:29
CPC Classifications
C; C04; C04B; C04B26/00; C04B26/02
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
67 words
A curable polymer concrete composition, suitable for articles of construction, comprising: (1) from about 3% to about 15% by weight of a polyester composition, (2) from about 85% to about 97% by weight of an aggregate composition comprising (a) from about 50% to about 95% by weight of sand, and (b) from about 5% to about 50% by weight of fly ash, and (3) a free-radical initiator.
Claim 2
Dependent Claim
67 words
A curable polymer concrete composition, suitable for articles of construction, comprising: (1) from about 3% to about 15% by weight of a polyester composition, (2) from about 85% to about 97% by weight of an aggregate composition comprising (a) from about 50% to about 95% by weight of sand, and (b) from about 5% to about 50% by weight of fly ash, and (3) a free-radical initiator.
Claim 3
Dependent Claim
21 words
The composition of claim 1 wherein the polyester is prepared by esterifying a glycol with a polycarboxylic acid or acid anhydride.
Claim 4
Dependent Claim
14 words
The composition of claim 2 wherein the polycarboxylic acid is orthophthalic or isophthalic acid.
Claim 5
Dependent Claim
28 words
The composition of claim 1 wherein the polyester composition comprises from about 50% to about 80% polyester and from about 20% to about 50% by weight of styrene.
Claim 6
Dependent Claim
16 words
The composition of claim 1 wherein a metallic reinforcing material is additionally incorporated in the composition.
Claim 7
Dependent Claim
19 words
The composition of claim 1 wherein the aggregate composition additionally contains up to about 25% by weight of gravel.
Claim 8
Dependent Claim
12 words
The composition of claim 1 wherein the free-radical initiator is a peroxide.
Claim 9
Dependent Claim
13 words
The composition of claim 7 wherein the peroxide is methyl ethyl ketone peroxide.
Claim 10
Dependent Claim
75 words
An article comprising at least one substrate layer and at least one layer prepared by curing a composition comprising: (1) from about 3% to about 15% by weight of a polyester composition, (2) from about 85% to about 97% by weight of an aggregate composition comprising: (a) from about 50% to about 95% by weight of sand, and (b) from about 5% to about 50% by weight of fly ash, and (3) a free-radical initiator.
Claim 11
Dependent Claim
75 words
An article comprising at least one substrate layer and at least one layer prepared by curing a composition comprising: (1) from about 3% to about 15% by weight of a polyester composition, (2) from about 85% to about 97% by weight of an aggregate composition comprising: (a) from about 50% to about 95% by weight of sand, and (b) from about 5% to about 50% by weight of fly ash, and (3) a free-radical initiator.
Claim 12
Dependent Claim
28 words
The article of claim 9 wherein the polyester composition comprises from about 50% to about 80% polyester and from about 20% to about 50% by weight of styrene.
Claim 13
Dependent Claim
18 words
The article of claim 9 wherein the polyester is prepared by esterifying a glycol with a polycarboxylic acid.
Claim 14
Dependent Claim
14 words
The article of claim 11 wherein the polycarboxylic acid is isophthalic or orthophthalic acid.
Claim 15
Dependent Claim
10 words
The article of claim 9 wherein the substrate is metallic.
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) | 1986-01-31 | 1986-08-02 | 1987-02-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-01-31 | 1990-08-02 | 1991-02-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-01-31 | 1994-08-02 | 1995-02-01 | $7700.00 | Window Closed / Lapsed |