US3953407A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for preparing paper size resin
Assignee: Eneos Corp
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Filing: 1974-07-09
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Granted: 1976-04-27
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Expires: 1994-07-09
Abstract
Abstract A process for preparing a resin suitable for preparation of sizes, which comprises polymerizing a cracked oil fraction which is obtained by the thermal cracking of petroleums, has a boiling point of 20 DEG to 220 DEG C., and contains diolefins, thereby to form a hydrocarbon resin, reacting the resulting hydrocarbon resin with an unsaturated dicarboxylic acid or its anhydride, and heating the acid-modified resin in the presence of water or an alkali metal hydroxide at a temperature of 130 DEG to 350 DEG C.
Inventors
- 👤 Hideo Hayashi
- 👤 Hisatake Sato
- 👤 Shiro Saito
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 10:16
CPC Classifications
D; D21; D21H; D21H17/00; D21H17/20; D21H17/33; D21H17/34; D21H17/41; D21H17/42; D21H17/43; C; C08; C08C; C08C19/00; C08C19/28; C08F; C08F8/00; C08F8/44; C08F8/46
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
110 words
A process for preparing a resin suitable for preparation of sizes, which comprises polymerizing a cracked oil fraction which is obtained by the thermal cracking of petroleums, has a boiling point of 20° to 220° C., and contains diolefins, thereby to form a hydrocarbon resin, reacting the resulting hydrocarbon resin with 0.08 to 0.3 mol of 100 unsaturated dicarboxylic acid or its anhydride per 100g of the hydrocarbon resin, and heating the acid-modified resin in the presence of water or the alkali metal hydroxide at a temperature of 130° to 350° C whereby the acid-modified resin is decarboxylated until the saponification value of the heat treated acid-modified resin is 60°-140°.
Claim 2
Dependent Claim
110 words
A process for preparing a resin suitable for preparation of sizes, which comprises polymerizing a cracked oil fraction which is obtained by the thermal cracking of petroleums, has a boiling point of 20° to 220° C., and contains diolefins, thereby to form a hydrocarbon resin, reacting the resulting hydrocarbon resin with 0.08 to 0.3 mol of 100 unsaturated dicarboxylic acid or its anhydride per 100g of the hydrocarbon resin, and heating the acid-modified resin in the presence of water or the alkali metal hydroxide at a temperature of 130° to 350° C whereby the acid-modified resin is decarboxylated until the saponification value of the heat treated acid-modified resin is 60°-140°.
Claim 3
Dependent Claim
35 words
The process of claim 1 wherein the content of the diolefin in the starting oil is 20 to 80% by weight based on the total amount of unsaturated components in the starting cracked oil fraction.
Claim 4
Dependent Claim
19 words
The process of claim 1 wherein the softening point of the hydrocarbon resin is not more than 45° C.
Claim 5
Dependent Claim
31 words
The process of claim 1 wherein said unsaturated carboxylic acid or its anhydride is selected from the group consisting of maleic acid, maleic anhydride, tetrahydrophthalic acid, tetrahydrophthalic anhydride and fumaric acid.
Claim 6
Dependent Claim
28 words
The process of claim 1 wherein the reaction between the hydrocarbon resin and the unsaturated carboxylic acid or its anhydride is carried out at 140° to 250° C.
Claim 7
Dependent Claim
17 words
The process of claim 1 wherein the softening point of said-acid-modified resin is 50° to 90° C.
Claim 8
Dependent Claim
14 words
The process of claim 1 wherein the heat-treating temperature is 150° to 280° C.
Claim 9
Dependent Claim
22 words
The process of claim 1 wherein the softening point of the resin obtained after the heat-treating temperature is 50° to 95° C.
Claim 10
Dependent Claim
18 words
The process of claim 1 wherein the saponification value of the resin obtained after-heat-treatment is 70 to 130.
References Cited (Backward Citations)
US2142980A
Cited
US3279975A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-04-27 | 1979-10-27 | 1980-04-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-04-27 | 1983-10-27 | 1984-04-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-04-27 | 1987-10-27 | 1988-04-27 | $7700.00 | Window Closed / Lapsed |