Synthetic resins

Details Synthetic resins Synthetic resins

1973-07-16

1976-10-26

Ziegler, J.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

260 33, 260 53R, 260 57R, 260 57A, 260 57C, 260 59EP, 260838, 260842, 260843, 260844, 260845, C08G 808, C08L 6300

Patent

active

039883868

ABSTRACT:
A process for the preparation of light color, odor free novolaks which have high melting points, high condensation levels, good solubility and uniform compositions which comprises reacting in at least one stage a) at least one alkyl-free phenol, b) at least one condensation product of formaldehyde and at least one alkyl phenol, the said condensation product containing at least one member selected from the group consisting methylol groups and methylene ether linkages, and c) less than one mole of formaldehyde calculated on the basis of the total number of moles of phenol and alkyl phenol present and including the formaldehyde already present in the alkyl phenol-formaldehyde condensation product, in the presence of an acid catalyst, such that the ratio of the product of (moles of alkyl phenol .times. number of carbon atoms in the alkyl radicals of the alkyl phenol)/(the total molar number of phenolic hydroxy groups in the starting materials) is from (0.6 to 1.25):1; a novolak which is obtained by the process and binding compositions containing said novolak.

REFERENCES:
patent: 2321783 (1943-06-01), Webber et al.
patent: 2809178 (1957-10-01), Turner et al.
patent: 3053807 (1962-09-01), Lederman et al.
patent: 3226365 (1965-12-01), Yamamoto et al.
patent: 3410718 (1968-11-01), Smith
patent: 3518159 (1970-06-01), Freeman et al.

Affiliated with

Also associated with

Rating

Synthetic resins does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Synthetic resins, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Synthetic resins will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-184903