US3862089A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the preparation of thermosetting phenolic synthetic resin
Assignee: Mitsui Chemicals Inc
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Filing: 1970-06-26
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Granted: 1975-01-21
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Expires: 1990-06-26
Abstract
Abstract Process for the preparation of thermosetting resin of excellent physical properties such as dimensional stability under elevated temperature, bending strength, cracking resistance, insulating resistance after boiling and shell mold adaptability, which comprises reacting under heating the residue (R) remaining after recovery by distillation of cresol and acetone from acidcatalyzed cleavage reaction products of cymene hydroperoxide with at least one phenolic compound (P) selected from the group consisting of phenol and cresol, and an aldehyde (A).
Inventors
- 👤 Yoshiyuki Shinohara
- 👤 Katuhiko Tasaka
- 👤 Kinya Mizui
- 👤 Shigeru Katayama
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 14:58
CPC Classifications
C; C08; C08G; C08G8/00; C08G8/04; C08G8/08; C08G8/10
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
29 words
The process of claim 1, in which the reaction is effected by first reacting the residue with aldehyde, and by adding to the reaction product the specified phenolic compound.
Claim 2
Dependent Claim
19 words
The process of claim 1 wherein the reaction is performed at a temperature within the range 70* - 160*C.
Claim 3
Dependent Claim
25 words
The process of claim 1, wherein the mol number of (A) as specified in condition (i) is within the range of from 0.3 to 1.0.
Claim 4
Dependent Claim
25 words
The process of claim 1, wherein the mol number of (A) as specified in condition (ii) is within the range of from 0.9 to 2.5.
Claim 5
Dependent Claim
26 words
The process of claiM 1, wherein the reaction is effected by blending and heating the reaction product of the phenolic compound with aldehyde, with said residue.
Claim 6
Dependent Claim
57 words
The process of claim 6, wherein the blend ratio of the residue and the reaction product is such that, in 100 parts of total resin, the residue content is within the range of from 10 -60 parts, and the reaction product content is within the range of from 40 - 90 parts, the parts being by weight.
Claim 7
Dependent Claim
20 words
The process of claim 6, wherein the reaction is performed at a temperature within the range of from 40*- 160*C.
Claim 8
Dependent Claim
35 words
Thermosetting, synthetic resin composition which is formed by incorporating an additive selected from the group consisting of hardening agent, filler, parting agent and plasticizer, with the thermosetting resin obtained through the process of claim 1.
References Cited (Backward Citations)
US2728797A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-01-20 | 1978-07-22 | 1979-01-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-01-20 | 1982-07-22 | 1983-01-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-01-20 | 1986-07-22 | 1987-01-21 | $7700.00 | Window Closed / Lapsed |